CN114718552A - Method, device, equipment and medium for adjusting borehole trajectory after horizontal well window entering - Google Patents
Method, device, equipment and medium for adjusting borehole trajectory after horizontal well window entering Download PDFInfo
- Publication number
- CN114718552A CN114718552A CN202110004439.1A CN202110004439A CN114718552A CN 114718552 A CN114718552 A CN 114718552A CN 202110004439 A CN202110004439 A CN 202110004439A CN 114718552 A CN114718552 A CN 114718552A
- Authority
- CN
- China
- Prior art keywords
- well
- layer
- oil
- target
- layer information
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 48
- 239000010410 layer Substances 0.000 claims abstract description 340
- 239000003129 oil well Substances 0.000 claims abstract description 135
- 239000011229 interlayer Substances 0.000 claims abstract description 41
- 239000003550 marker Substances 0.000 claims description 74
- 230000015572 biosynthetic process Effects 0.000 claims description 65
- 238000006073 displacement reaction Methods 0.000 claims description 45
- 230000000295 complement effect Effects 0.000 claims description 16
- 230000015654 memory Effects 0.000 claims description 8
- 238000012545 processing Methods 0.000 claims description 4
- 238000011161 development Methods 0.000 abstract description 10
- 238000005553 drilling Methods 0.000 description 16
- 238000004590 computer program Methods 0.000 description 15
- 230000008569 process Effects 0.000 description 11
- 238000010586 diagram Methods 0.000 description 9
- 239000004215 Carbon black (E152) Substances 0.000 description 8
- 229930195733 hydrocarbon Natural products 0.000 description 8
- 150000002430 hydrocarbons Chemical class 0.000 description 8
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- 230000008021 deposition Effects 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 239000003345 natural gas Substances 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 235000009508 confectionery Nutrition 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 241000282414 Homo sapiens Species 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/02—Determining slope or direction
- E21B47/022—Determining slope or direction of the borehole, e.g. using geomagnetism
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
Landscapes
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Geophysics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The application provides a method, a device, equipment and a medium for adjusting a borehole trajectory after a horizontal well enters a window, and belongs to the technical field of exploration and development. The method comprises the steps of determining a window entering point of a well track entering by acquiring target layer information and mark layer information of a first oil well to be drilled and a second oil well adjacent to the first oil well, so that the well track just reaches the top of a target layer serving as an oil storage layer when the well track reaches the vertical depth of the window entering point, further dividing the top, interlayer and bottom of the oil layer in the target layer after the well track enters the window, and realizing the layering of the inner part of the target layer by dividing the interlayer in the oil layer; in addition, the stratigraphic dip angle is determined according to two target points which penetrate through any one layer and are positioned on the same interface, so that the stratigraphic dip angle can be determined without the well track going out of a target layer, the well track can be adjusted based on the stratigraphic dip angle, a longer horizontal section can be drilled when the first oil well serving as the horizontal well is drilled, and the productivity of the first oil well is improved.
Description
Technical Field
The application relates to the technical field of exploration and development, in particular to a method, a device, equipment and a medium for adjusting a borehole trajectory after a horizontal well enters a window.
Background
Petroleum and natural gas are important strategic resources of the country and are important life lines for national economic development. Nowadays, the demand of human beings for energy is gradually increased, and oil reservoirs with thin reservoir thicknesses become a main development target. The horizontal well has great advantages in the development and application of the oil reservoir with the thin reservoir thickness, and becomes one of the most effective methods in the processes of early development, later adjustment and recovery efficiency improvement of the oil reservoir with the thin reservoir thickness.
In the current horizontal well geosteering technology, a horizontal well track below a straight well section is generally divided into an inclined section and a horizontal section, and in the connection process from the inclined section to the horizontal section, a target point is required to be used as a target, the angle of the well track is gradually adjusted, so that the well track penetrates through the target point, the residual angle of a well bevel angle is ensured to be consistent with a stratum tilt angle, and the track control after the well track enters a window is realized. However, the underground geological condition is complex, and the actual stratigraphic dip angle is likely to deviate from the complementary angle of the well dip angle, so that the horizontal section loss is caused, the design length of the horizontal section cannot be reached, and the productivity of the horizontal well is low.
Disclosure of Invention
The embodiment of the application provides a method, a device, equipment and a medium for adjusting a track of a well after a horizontal well enters a window, and a longer horizontal section can be drilled when the horizontal well is drilled, so that the productivity of an oil well is improved. The technical scheme provided by the application is as follows:
on one hand, the method for adjusting the borehole trajectory after the horizontal well enters the window comprises the following steps:
acquiring target layer information and marker layer information of a first oil well, and acquiring target layer information and marker layer information of a second oil well, wherein the second oil well is adjacent to the first oil well;
the target layer information is used for indicating the top surface position and the bottom boundary position of the target layer and the thickness of the target layer, and the mark layer information is used for indicating the top surface position and the bottom boundary position of a plurality of mark layers and the thickness of each mark layer;
determining an entry window vertical depth based on the destination layer information and the marker layer information of the first oil well and the destination layer information and the marker layer information of the second oil well, wherein the entry window vertical depth is used for indicating the vertical distance between an entry window positioned on the top surface of the destination layer and the ground;
determining the top, interlayer and bottom of the oil layer in the target layer of the first oil well when the vertical depth of the entry window is reached;
determining a formation dip angle based on two target points on any one of the top of the oil layer, the interlayer and the bottom of the oil layer, wherein the two target points are points which penetrate through any one of the layers and are positioned on the same interface;
based on the formation dip angle, a wellbore trajectory of the first well is adjusted.
In one possible implementation, the determining the window dip based on the destination layer information and marker layer information for the first well and the destination layer information and marker layer information for the second well comprises:
determining a vertical depth difference between the target layer and the adjacent marker layer in the second oil well based on the target layer information and the marker layer information of the second oil well;
and determining the window vertical depth based on the target layer information and the mark layer information of the first oil well and the vertical depth difference.
In one possible implementation, the determining the top, bottom, and interbed of the oil layer in the destination zone of the first well upon reaching the entry window dip comprises:
acquiring logging data and logging data of the second oil well;
and when the vertical depth of the entry window is reached, identifying the top, interlayer and bottom of the oil layer in the target layer of the first oil well on the basis of the logging data and logging data of the second oil well.
In one possible implementation, the two target points include a first target point and a second target point, and the determining the dip angle of the formation based on the two target points at any one of the top of the oil layer, the interlayer, and the bottom of the oil layer includes:
determining a first vertical depth and a first horizontal displacement corresponding to the first target point
Determining a second vertical depth and a second horizontal displacement corresponding to the second target;
determining a drop depth difference based on the first drop depth and the second drop depth;
determining a displacement difference based on the first horizontal displacement and the second horizontal displacement;
based on the vertical depth difference and the displacement difference, the formation dip angle is determined.
In one possible implementation, the adjusting the wellbore trajectory of the first well based on the formation dip angle comprises:
determining the formation dip angle as a complementary angle of a well dip angle corresponding to the well track of the first oil well;
based on the complementary angle of the angle of hole, a wellbore trajectory for the first well is determined.
In one aspect, a wellbore trajectory adjusting device after horizontal well window entering is provided, the device includes:
the system comprises an acquisition module, a data processing module and a data processing module, wherein the acquisition module is used for acquiring target layer information and marker layer information of a first oil well and acquiring target layer information and marker layer information of a second oil well, and the second oil well is adjacent to the first oil well;
the target layer information is used for indicating the top surface position and the bottom boundary position of the target layer and the thickness of the target layer, and the mark layer information is used for indicating the top surface position and the bottom boundary position of a plurality of mark layers and the thickness of each mark layer;
the determining module is used for determining the vertical distance between a window on the top surface of the target layer and the ground based on the target layer information and the mark layer information of the first oil well and the target layer information and the mark layer information of the second oil well;
the determining module is further used for determining the top of an oil layer, an interlayer and the bottom of the oil layer in the target layer of the first oil well when the vertical depth of the entry window is reached;
the determining module is further used for determining a formation dip angle based on two target points on any one level of the top of the oil layer, the interlayer and the bottom of the oil layer, wherein the two target points are points which penetrate through any one level and are positioned on the same interface;
and the adjusting module is used for adjusting the well track of the first oil well based on the stratum inclination angle.
In one possible implementation, the determining module is configured to determine a vertical depth difference between the target formation and an adjacent marker formation in the second well based on the target formation information and the marker formation information of the second well; and determining the window vertical depth based on the target layer information and the mark layer information of the first oil well and the vertical depth difference.
In a possible implementation manner, the determining module is configured to obtain logging data and logging data of the second oil well; and when the vertical depth of the entry window is reached, identifying the top, interlayer and bottom of the oil layer in the target layer of the first oil well on the basis of the logging data and logging data of the second oil well.
In a possible implementation manner, the determining module is configured to determine a first vertical depth and a first horizontal displacement corresponding to the first target point; determining a second vertical depth and a second horizontal displacement corresponding to the second target; determining a drop depth difference based on the first drop depth and the second drop depth; determining a displacement difference based on the first horizontal displacement and the second horizontal displacement; based on the vertical depth difference and the displacement difference, the formation dip angle is determined.
In a possible implementation manner, the adjusting module is configured to determine the formation dip angle as a complementary angle of a well dip angle corresponding to the wellbore trajectory of the first oil well; based on the complementary angle of the angle of hole, a wellbore trajectory for the first well is determined.
In another aspect, a computer apparatus is provided that includes one or more processors and one or more memories having at least one program code stored therein, the program code being loaded and executed by the one or more processors to perform the operations performed by the horizontal well window entry wellbore trajectory adjustment method.
In another aspect, a computer-readable storage medium is provided, and at least one program code is stored in the computer-readable storage medium and loaded and executed by a processor to implement the operations performed by the horizontal well windowing wellbore trajectory adjustment method.
In another aspect, a computer program product or a computer program is provided, the computer program product or the computer program comprising computer program code, the computer program code being stored in a computer readable storage medium. A processor of a computer device reads the computer program code from a computer readable storage medium and executes the computer program code to perform the operations performed by the horizontal well window entry wellbore trajectory adjustment method.
According to the scheme provided by the application, the window entering point of the well track is determined by acquiring the target layer information and the mark layer information of the first oil well to be drilled and the second oil well adjacent to the first oil well, so that the well track just reaches the top of the target layer serving as an oil storage layer when the well track reaches the vertical depth of the window, the top, the interlayer and the bottom of the oil layer in the target layer are divided after the well track enters the window, and the interlayer is divided in the oil layer, so that the layering of the inner part of the target layer can be realized; in addition, the stratigraphic dip angle is determined according to two target points which penetrate through any one layer and are positioned on the same interface, so that the stratigraphic dip angle can be determined without the well track going out of a target layer, the well track can be adjusted based on the stratigraphic dip angle, a longer horizontal section can be drilled when the first oil well serving as the horizontal well is drilled, and the productivity of the first oil well is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a flowchart of a method for adjusting a borehole trajectory after a horizontal well enters a window according to an embodiment of the present disclosure;
FIG. 2 is a flowchart of a method for adjusting a borehole trajectory after a horizontal well enters a window according to an embodiment of the present disclosure;
FIG. 3 is a stratigraphic comparison of a XX well with a XX1 well, a XX2 well, and a XX3 well provided by embodiments of the present application;
FIG. 4 is a stratigraphic comparison of a drilled horizontal well with an XX1 well provided by an embodiment of the present application;
FIG. 5 is a schematic view of a horizontal well trajectory provided by embodiments of the present application;
FIG. 6 is a schematic diagram of a borehole trajectory of a drilled horizontal well of an XX oil field provided by an embodiment of the present application;
FIG. 7 is a schematic structural diagram of a wellbore trajectory adjusting device after a horizontal well is windowed, according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of a computer device according to an embodiment of the present application.
Detailed Description
To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
The embodiment of the application provides a method for adjusting a borehole trajectory after a horizontal well enters a window, relates to the technical field of drilling exploration and development of petroleum, natural gas and the like, and particularly relates to a method for adjusting the borehole trajectory in a horizontal section drilling process of the horizontal well in the drilling exploration and development process of the petroleum, the natural gas and the like. When a horizontal section of a first oil well is to be drilled, a related technician acquires logging data and logging data of the first oil well, and logging data of a second oil well adjacent to the first oil well, and then inputs the acquired logging data and logging data of the first oil well, and the logging data and logging data of the second oil well into a computer device, so that the computer device determines a formation inclination angle for adjusting a borehole trajectory of the first oil well based on the received logging data and logging data, and further adjusts an oil well trajectory of the first oil well.
Fig. 1 is a flowchart of a method for adjusting a trajectory of a borehole after a horizontal well is windowed, where in reference to fig. 1, the method includes:
101. the computer device obtains destination layer information and marker layer information for a first well, and obtains destination layer information and marker layer information for a second well, the second well being adjacent to the first well.
Wherein the destination layer information is used for indicating the top surface position and the bottom boundary position of the destination layer and the thickness of the destination layer, and the mark layer information is used for indicating the top surface position and the bottom boundary position of the mark layers and the thickness of each mark layer.
102. The computer device determines an entry window dip depth based on the destination layer information and marker layer information for the first well and the destination layer information and marker layer information for the second well, the entry window dip depth indicating a vertical distance from an entry window located on a top surface of the destination layer to the surface.
103. Upon reaching the entry window dip, the computer device determines a top of oil layer, an interlayer, and a bottom of oil layer in the destination layer of the first well.
104. The computer device determines the dip angle of the formation based on two target points on any one of the top of the oil layer, the interlayer, and the bottom of the oil layer, the two target points being points on the same interface through any one of the layers.
105. A computer device adjusts a wellbore trajectory for the first well based on the formation dip angle.
According to the scheme provided by the embodiment of the application, the window entering point of the well track is determined by acquiring the target layer information and the mark layer information of the first oil well to be drilled and the second oil well adjacent to the first oil well, so that the well track just reaches the top of the target layer serving as an oil storage layer when the well track reaches the window entering depth, the top, the interlayer and the bottom of the oil layer in the target layer are divided after the well track enters the window, and the interlayer is divided in the oil layer, so that the inner part of the target layer can be layered; in addition, the stratigraphic dip angle is determined according to two target points which penetrate through any one layer and are positioned on the same interface, so that the stratigraphic dip angle can be determined without the well track going out of a target layer, the well track can be adjusted based on the stratigraphic dip angle, a longer horizontal section can be drilled when the first oil well serving as the horizontal well is drilled, and the productivity of the first oil well is improved.
In one possible implementation, the determining the window dip based on the destination layer information and marker layer information for the first well and the destination layer information and marker layer information for the second well comprises:
determining a vertical depth difference between the target layer and an adjacent marker layer in the second well based on the target layer information and the marker layer information of the second well;
and determining the window vertical depth based on the target layer information and the mark layer information of the first oil well and the vertical depth difference.
In one possible implementation, the determining the top, bottom, and interbed of the oil layer in the destination zone of the first well upon reaching the entry window dip comprises:
acquiring logging data and logging data of the second oil well;
and when the vertical depth of the access window is reached, identifying the top, interlayer and bottom of the oil layer in the target layer of the first oil well based on the logging data and logging data of the second oil well.
In one possible implementation, the two target points include a first target point and a second target point, and the determining the dip angle of the formation based on the two target points at any one of the top of the oil layer, the interlayer, and the bottom of the oil layer includes:
determining a first vertical depth and a first horizontal displacement corresponding to the first target point;
determining a second vertical depth and a second horizontal displacement corresponding to the second target;
determining a droop depth difference based on the first droop depth and the second droop depth;
determining a displacement difference based on the first horizontal displacement and the second horizontal displacement;
based on the vertical depth difference and the displacement difference, the formation dip angle is determined.
In one possible implementation, the adjusting the wellbore trajectory of the first well based on the formation dip angle comprises:
determining the formation dip angle as a complementary angle of a well dip angle corresponding to the well track of the first oil well;
based on the complementary angle of the angle of hole, a wellbore trajectory for the first well is determined.
Fig. 2 is a flowchart of a method for adjusting a wellbore trajectory after horizontal well windowing is performed, and referring to fig. 2, the method includes:
201. the computer device obtains destination layer information and marker layer information for a first well, and obtains destination layer information and marker layer information for a second well, the second well being adjacent to the first well.
The target layer is also a reservoir layer, and the target layer comprises an oil layer and an interlayer (also is a dry layer). And the reservoir is fractured subsequently, so that the dry layer is communicated with an oil layer, and the well section of the well track which is drilled to the dry layer is equivalent to the well section of the reservoir, thereby increasing the oil drainage area and improving the yield of a single well.
It should be noted that, the related technical staff obtains the logging data and the logging data of the first oil well, and the logging data of the second oil well, and then inputs the obtained data into the computer device, so that the computer device obtains the logging data and the logging data of the first oil well, and the logging data of the second oil well, and further obtains the target zone information and the marker zone information based on the obtained logging data and the logging data.
The logging data comprises logging rock debris types, the logging data comprises logging curves, optionally, the logging data and the logging data comprise other contents, and the logging data are not limited in the embodiment of the application.
In one possible implementation, the computer device determines the target layer and the marker layer of the first well based on the logging data and the logging data of the first well, and further determines the top surface position and the bottom boundary position of the marker layer, and the top surface position and the bottom boundary position of the target layer, determines the thickness of each marker layer based on the top surface position and the bottom boundary position of each marker layer, and determines the thickness of the target layer based on the top surface position and the bottom boundary position of the target layer. And determining a target layer and a mark layer of the second oil well based on the logging data and the logging data of the second oil well, further determining the top surface position and the bottom boundary position of the mark layer and the top surface position and the bottom boundary position of the target layer, determining the thickness of each mark layer based on the top surface position and the bottom boundary position of each mark layer, and determining the thickness of the target layer based on the top surface position and the bottom boundary position of the target layer.
When the target layer and the mark layer are determined based on the logging data and the logging data, the computer equipment determines sandstone lithology characteristics based on logging rock debris types included in the logging data and natural gamma values in a logging curve included in the logging data, determines electrical characteristics based on resistivity values in the logging curve included in the logging data, and then determines the target layer and the mark layer based on the sandstone lithology characteristics and the electrical characteristics.
Optionally, after determining the target layer information and the marker layer information of the first oil well, the computer device generates a stratigraphic profile of the first oil well based on the target layer information and the marker layer information, and the stratigraphic profile is used as a marker layer model before the horizontal well window.
Taking the first oil well as the XX oil field XX well, the second oil well as the XX oil field XX1 well and the XX oil field XX2 well as examples, referring to FIG. 3, FIG. 3 is a stratigraphic contrast diagram of the XX well with the XX1 well, the XX2 well and the XX3 well provided by the embodiments of the present application, the XX well, the XX1 well, the XX2 well and the XX oil fieldThe target horizons of the XX3 wells are all Es III-34Target layer Es III-34The above three mark layers are respectively Es III-31、EsⅢ-32And Es III-33Wherein, the XX well is a marker layer Es III-31The vertical depth corresponding to the top surface position of the mark layer is about 2920 meters (m), the vertical depth corresponding to the bottom boundary position of the mark layer is about 2925m, and the mark layer Es III-32The vertical depth corresponding to the top surface position of the mark layer is about 2925m, the vertical depth corresponding to the bottom boundary position of the mark layer is about 2931m, and the mark layer Es III-33The vertical depth corresponding to the top surface position of the mark is about 2931m, the vertical depth corresponding to the bottom boundary position of the mark is about 2943m, the thickness (namely the deposition thickness) of each mark layer is about 5m, 6m and 12m respectively, and the target layer Es III-34The vertical depth corresponding to the top surface position of the target layer is about 2945m, the vertical depth corresponding to the bottom boundary position of the target layer is about 2948m, and the thickness (namely, the deposition thickness) of the target layer is about 3m, namely, the mark layer Es III-33The position of the bottom boundary and the target layer Es III-34Is about 2m thick.
Note that the marker layer Es III-33The position of the bottom boundary and the target layer Es III-34The deposition thickness between the top surface positions of (2) is about 2m, which indicates that the oil layer is stable in development and can be used for mining, thereby establishing a marker layer model of the XX oil field.
202. The computer device determines a sag difference between the target formation and an adjacent marker formation in the second well based on the target formation information and the marker formation information for the second well.
It should be noted that after the target layer information and the marker layer information in the first oil well are obtained, the stratum encountered during drilling and the determined marker layer can be analyzed and compared in the actual drilling process of the horizontal well until the horizontal well drilling encounters the marker layer bottom boundary adjacent to the target layer.
In one possible implementation, the computer device determines a sag difference between the target formation and an adjacent marker formation in the second well based on the target formation information and the marker formation information of the second well after the horizontal well drill encounters the marker formation bottom boundary adjacent the target formation.
In another possible implementation manner, the computer device has previously determined the vertical depth difference between the target layer and the adjacent marker layer in the second oil well based on the target layer information and the marker layer information of the second oil well, so that after the horizontal well drill encounters the bottom boundary of the marker layer adjacent to the target layer, the computer device directly obtains the determined vertical depth difference, and the embodiment of the present application does not limit which specific manner is adopted.
When the vertical depth difference between the target layer and the adjacent mark layer is determined based on the target layer information and the mark layer information, the computer device determines the vertical depth difference corresponding to the top surface position of the target layer and the vertical depth difference corresponding to the bottom boundary position of the adjacent mark layer.
Still taking the first oil well as the XX well in the XX oil field as an example, the second oil well is the XX1 well in the XX oil field, and analyzing and comparing the drilled marker layer with the marker layer determined in the step 201 in the actual drilling process of the horizontal well, referring to fig. 4, fig. 4 is a stratigraphic comparison diagram of the actually drilled horizontal well and the XX1 well provided by the embodiment of the application, and the marker layer Es iii-3 in the XX1 well3The position of the bottom boundary and the target layer Es III-34Has a vertical depth difference of 2-3m, and is referred to as an XX1 well marker layer Es III-33The position of the bottom boundary and the target layer Es III-34The vertical depth difference between the top surface positions of the horizontal well is obtained, and the mark layer Es III-3 in the horizontal well is drilled actually3The position of the bottom boundary and the target layer Es III-34The vertical depth difference between the top surface positions of (a) is also 2-3 m.
203. The computer device determines an entry window dip based on the destination layer information and marker layer information for the first well, and the dip-depth difference, the entry window dip indicating a vertical distance from an entry window point located on a top surface of the destination layer to the surface.
In one possible implementation manner, the computer device determines the vertical depth difference between the target layer and the adjacent marker layer in the second oil well as the vertical depth difference between the target layer and the adjacent marker layer in the first oil well, and further determines the sum of the vertical depths corresponding to the bottom boundary positions of the adjacent marker layers indicated by the marker layer information of the first oil well as the vertical depth of the entry window of the first oil well.
Still using the first oil well as XX oil field and XX oil fieldTaking a field XX1 well as an example, a marker layer Es III-3 in the actually drilled horizontal well3The vertical depth corresponding to the bottom boundary position of the horizontal well is 2933.5m (minus the height depth of the bushing), and the mark layer Es III-3 in the actual drilling horizontal well3To the bottom boundary position of the target layer Es III-34The vertical depth difference between the top surface positions of the horizontal well is 2-3m, and the vertical depth of the entry window of the actual drilling horizontal well is 2935.5-2936.5 m.
204. Upon reaching the entry window dip, the computer device determines a top of oil layer, an interlayer, and a bottom of oil layer in the destination layer of the first well.
When the vertical depth of the entry window of the first oil well is reached, the drill bit reaches the top surface position of the target layer in the first oil well, and the horizontal well enters the entry window after drilling is continued.
In one possible implementation, upon reaching the window entry vertical depth, i.e., after the horizontal well entry window, the computer device identifies the top, bottom, and interbed of the oil layer in the destination layer of the first well based on the logging data and logging data of the second well.
It should be noted that the logging data and the logging data include various parameters, and the computer device can quickly identify the top, the interlayer, and the bottom of the oil layer in the target layer based on the various parameters in the logging data and the logging data. The parameters include drill bit time, all hydrocarbon value, lithology, natural gamma, resistivity, and the like, optionally, the parameters further include other contents, which are not limited in this application. In identifying the top, the interlayer, and the bottom of the oil layer based on the parameters, the total hydrocarbon value may be used, and optionally, other parameters may also be used, which is not limited in the embodiment of the present application.
Still taking the first oil well as the XX well in the XX oil field and the second oil well as the XX1 well in the XX oil field as examples, see table 1 below, where table 1 is a parameter statistical table corresponding to logging data and logging data of the XX oil field:
TABLE 1
When the drilling vertical depth of the drill bit is 2936.5m, the drilling time of the pilot drill is changed from 4 minutes/meter (min/m) to 2min/m, the total hydrocarbon is 0.5-7.2%, the rock debris is shown as oil-trace fine sandstone, and the landing oil layer of the horizontal well can be determined by combining the above table 1; thereafter, the natural gamma value in the log was changed from 109API (standard scale units) to 75API, and the resistivity was changed from 3 ohm meters (ohm m) to 64ohm m (gamma while drilling lags the drill bit by about 10m, resistivity lags the drill bit by about 12m) so that it could be further verified that the horizontal well had landed on the reservoir.
As can be seen from table 1 above, the total hydrocarbon values of the top, interlayer, and bottom of the oil layer have large differences, so that the top, interlayer, and bottom of the oil layer are distinguished by the total hydrocarbon values, and in more possible implementations, other data are used as standards to distinguish the top, interlayer, and bottom of the oil layer, which is not limited in the embodiment of the present application.
205. The computer device determines the dip angle of the formation based on two target points on any one of the top of the oil layer, the interlayer, and the bottom of the oil layer, the two target points being points on the same interface through any one of the layers.
It should be noted that, before determining the formation dip angle for guiding the adjustment of the wellbore trajectory, the general structure of the oil field is known first, so as to provide a guiding meaning for controlling the well dip angle when the horizontal well is windowed, so that the well dip angle before windowing is reasonably controlled, and the condition that the horizontal segment is lost when the horizontal well is windowed, or even the reservoir cannot be found is avoided. After the top, the interlayer and the bottom of the oil layer in the target layer are determined, two target points of the drill bit passing through the same interface of any one layer of the top, the interlayer and the bottom of the oil layer can be determined, and the formation dip angle is determined based on the two target points.
In one possible implementation, the two target points are a first target point and a second target point, respectively, the computer device determines a first vertical depth and a first horizontal displacement corresponding to the first target point, determines a second vertical depth and a second horizontal displacement corresponding to the second target, determines a vertical depth difference based on the first vertical depth and the second vertical depth, determines a displacement difference based on the first horizontal displacement and the second horizontal displacement, and determines the formation dip based on the vertical depth difference and the displacement difference.
For example, the first vertical depth corresponding to the first target point is H1The first horizontal displacement is L1The first vertical depth corresponding to the second target point is H2The first horizontal displacement is L2If the displacement difference DeltaL is equal to L2-L1H is the vertical depth difference2-H1Finally, the formation dip angle θ is arctan (Δ H/Δl).
It should be noted that the method for determining the formation dip angle in the above process is called a breaststroke method. The above is merely an exemplary method for determining the formation dip angle, and in more possible implementations, the formation dip angle is determined in other ways, which is not limited in the embodiments of the present application.
Still taking the first oil well as the XX oil well of the XX oil field and the second oil well as the XX1 oil well as an example, before the horizontal well is drilled, related technicians analyze various data to obtain that the stratum inclination angle of the XX oil well is about 8 degrees, so that in the drilling process of the horizontal well, the stratum inclination angle is controlled to about 82 degrees, a drill bit is used for searching a reservoir, finally, the well inclination angle is 82 degrees when the XX well is drilled into the window, the vertical depth of the window is 2936.5m (minus the height of the bushing), the total hydrocarbon value is 12%, referring to fig. 5, fig. 5 is a schematic diagram of a horizontal well track provided by the embodiment of the application, when the drill bit drills to a point B with the vertical depth of 2940.8m (minus the height of the bushing), the horizontal displacement is 384m, the total hydrocarbon value is almost reduced to 0%, according to methods of well seismic combination, reservoir stratum identification and the like, the complementary angle of the track well inclination angle is considered to be slightly larger than the stratum inclination angle, and the point B is not a window-out point, but rather the critical point of the top of the reservoir and the interbed, increasing the angle of the well bore from 82 degrees to 84 degrees, when the bit is drilled to a point C of the sag depth (2943.5 m (minus the offset height depth)), the horizontal displacement is 398m, and the total hydrocarbon value is increased from 0% to 8-12%, it can be determined that the bit has returned to the sweet spot section of the top of the reservoir, which is yet another critical point of the top of the reservoir and the interbed, point B is the first target point, and point C is the second target point, then the first sag depth is 2940.8m, the first horizontal displacement is 384m, the second sag depth is 2940.8m, and the second horizontal displacement is 398m, it can be determined that the sag difference between points B and C is 1.7m, and the displacement difference is 14m, and based on the sag and displacement differences, it can be determined that the formation dip angle is 7 degrees.
It should be noted that, because the interlayer inside the target layer of the XX well in the XX oil field is stable in development, the formation dip determined by the scheme provided by the embodiment of the application can be ensured to be in line with the actual situation, and the accuracy of the determined formation dip is ensured.
In the above process, the determination of the dip angle of the formation is performed by taking the point B as the first target point and the point C as the second target point, and in more possible implementation manners, the point a and the point D are also points that pass through the same interface, the point a is taken as the first target point, and the point D is taken as the second target point, which two points are specifically adopted as the first target point and the second target point is not limited in the embodiment of the present application.
206. A computer device adjusts a wellbore trajectory for the first well based on the formation dip angle.
In one possible implementation, the computer device determines the formation dip as a complement of a borehole dip angle corresponding to the borehole trajectory for the first well, and determines the borehole trajectory for the first well based on the complement of the borehole dip angle.
It should be noted that, when the engineering dogleg degree allows, the complementary angle of the inclination angle corresponding to the borehole trajectory of the first oil well needs to be determined, that is, the complementary angle of the inclination angle in the borehole trajectory of the designed horizontal well is adjusted to be consistent with the inclination angle of the formation as much as possible, so as to drill and meet an ideal horizontal segment.
Still taking the first oil well as the XX well in the XX oil field as an example, the dip angle of the stratum in the XX well is determined to be 7 degrees through the step 205, so that the dip angle of the borehole trajectory is controlled to be about 83 degrees, referring to fig. 6, fig. 6 is a schematic borehole trajectory diagram of a actually drilled horizontal well in the XX oil field provided by the embodiment of the application, during the drilling process of the actually drilled horizontal well, the drilling is completed when the drill bit drills to the end point slant depth of 3355m, and finally, in the case that the reservoir thickness is only 3-5m, the XX well successfully drills the 198.7m horizontal sweet spot section.
According to the scheme provided by the embodiment of the application, the window entering point of the well track is determined by acquiring the target layer information and the mark layer information of the first oil well to be drilled and the second oil well adjacent to the first oil well, so that the well track just reaches the top of the target layer serving as an oil storage layer when the well track reaches the window entering depth, the top, the interlayer and the bottom of the oil layer in the target layer are divided after the well track enters the window, and the interlayer is divided in the oil layer, so that the inner part of the target layer can be layered; in addition, the stratigraphic dip angle is determined according to two target points which penetrate through any one hierarchy and are positioned on the same interface, so that the stratigraphic dip angle can be determined without a target layer of the well track, the well track can be adjusted based on the stratigraphic dip angle, a longer horizontal section can be drilled when the first oil well serving as the horizontal well is drilled, and the productivity of the first oil well is improved. The scheme that this application embodiment provided can make things convenient for, quick, determine the stratum inclination effectively, has avoided the drill bit to go out the emergence of the well orbit adjustment condition after the window, makes horizontal well orbit can drill out longer horizontal segment steadily, increases the length of horizontal well horizontal segment effectively, improves the productivity of horizontal well.
All the above optional technical solutions may be combined arbitrarily to form optional embodiments of the present application, and are not described herein again.
Fig. 7 is a schematic structural diagram of a wellbore trajectory adjusting device after horizontal well window entry provided by an embodiment of the present application, and referring to fig. 7, the device includes:
an obtaining module 701, configured to obtain destination layer information and marker layer information of a first oil well, and obtain destination layer information and marker layer information of a second oil well, where the second oil well is adjacent to the first oil well;
the target layer information is used for indicating the top surface position and the bottom boundary position of the target layer and the thickness of the target layer, and the mark layer information is used for indicating the top surface position and the bottom boundary position of a plurality of mark layers and the thickness of each mark layer;
a determining module 702, configured to determine an entry window vertical depth based on the destination layer information and the marker layer information of the first well, and the destination layer information and the marker layer information of the second well, where the entry window vertical depth is used to indicate a vertical distance between an entry window located on a top surface of the destination layer and the ground;
the determining module 702 is further configured to determine a top of an oil layer, an interlayer, and a bottom of an oil layer in the destination layer of the first oil well when the entry window vertical depth is reached;
the determining module 702 is further configured to determine a formation dip angle based on two target points on any one of the top of the oil layer, the interlayer, and the bottom of the oil layer, where the two target points are points on the same interface passing through any one of the layers;
and an adjusting module 703 for adjusting the borehole trajectory of the first oil well based on the formation dip angle.
According to the device provided by the embodiment of the application, the window entering point of the well track is determined by acquiring the target layer information and the mark layer information of the first oil well to be drilled and the second oil well adjacent to the first oil well, so that the well track just reaches the top of the target layer serving as an oil storage layer when the well track reaches the window entering depth, the top, the interlayer and the bottom of the oil layer in the target layer are divided after the well track enters the window, and the interlayer is divided in the oil layer, so that the inner part of the target layer can be layered; in addition, the stratigraphic dip angle is determined according to two target points which penetrate through any one hierarchy and are positioned on the same interface, so that the stratigraphic dip angle can be determined without a target layer of the well track, the well track can be adjusted based on the stratigraphic dip angle, a longer horizontal section can be drilled when the first oil well serving as the horizontal well is drilled, and the productivity of the first oil well is improved.
In one possible implementation, the determining module 702 is configured to determine a vertical depth difference between a target formation and an adjacent marker formation in the second well based on the target formation information and the marker formation information of the second well; and determining the window vertical depth based on the target layer information and the mark layer information of the first oil well and the vertical depth difference.
In a possible implementation manner, the determining module 702 is configured to obtain logging data and logging data of the second oil well; and when the vertical depth of the access window is reached, identifying the top, interlayer and bottom of the oil layer in the target layer of the first oil well based on the logging data and logging data of the second oil well.
In a possible implementation manner, the determining module 702 is configured to determine a first vertical depth and a first horizontal displacement corresponding to the first target point; determining a second vertical depth and a second horizontal displacement corresponding to the second target; determining a drop depth difference based on the first drop depth and the second drop depth; determining a displacement difference based on the first horizontal displacement and the second horizontal displacement; based on the vertical depth difference and the displacement difference, the formation dip angle is determined.
In a possible implementation manner, the adjusting module 703 is configured to determine the formation dip angle as a complementary angle of a borehole dip angle corresponding to the borehole trajectory of the first oil well; based on the complementary angle of the angle of hole, a wellbore trajectory for the first well is determined.
It should be noted that: in the wellbore trajectory adjusting device after the horizontal well enters the window provided in the above embodiment, when the wellbore trajectory after the horizontal well enters the window is adjusted, only the division of the above functional modules is taken as an example, in practical application, the function distribution may be completed by different functional modules as needed, that is, the internal structure of the computer device may be divided into different functional modules, so as to complete all or part of the above described functions. In addition, the wellbore trajectory adjusting device after the horizontal well enters the window and the wellbore trajectory adjusting method after the horizontal well enters the window provided by the embodiment belong to the same concept, and the specific implementation process is described in the method embodiment and is not described again.
Fig. 8 is a schematic structural diagram of a computer device 800 according to an embodiment of the present application, where the computer device 800 may generate a relatively large difference due to different configurations or performances, and may include one or more processors (CPUs) 1001 and one or more memories 1002, where the one or more memories 1002 store at least one program code, and the at least one program code is loaded and executed by the one or more processors 1001 to implement the methods provided by the foregoing method embodiments. Certainly, the computer device 800 may further have a wired or wireless network interface, a keyboard, an input/output interface, and other components to facilitate input and output, and the computer device 800 may further include other components for implementing the device functions, which are not described herein again.
In an exemplary embodiment, a computer readable storage medium, such as a memory, is also provided that includes program code executable by a processor to perform the method of horizontal well window entry followed by wellbore trajectory adjustment of the above embodiments. For example, the computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a Compact Disc Read-Only Memory (CD-ROM), a magnetic tape, a floppy disk, an optical data storage device, and the like.
In an exemplary embodiment, a computer program product or a computer program is also provided, the computer program product or the computer program comprising computer program code stored in a computer readable storage medium, the computer program code being read by a processor of a computer device from the computer readable storage medium, the processor executing the computer program code to cause the computer device to perform the method steps of the method for horizontal well entry windowed wellbore trajectory adjustment provided in the above embodiments.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by hardware associated with program code, and the program may be stored in a computer readable storage medium, where the above mentioned storage medium may be a read-only memory, a magnetic or optical disk, etc.
The above description is only exemplary of the present application and should not be taken as limiting, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. A method for adjusting a borehole trajectory after a horizontal well enters a window is characterized by comprising the following steps:
acquiring target layer information and marker layer information of a first oil well, and acquiring target layer information and marker layer information of a second oil well, wherein the second oil well is adjacent to the first oil well;
the target layer information is used for indicating the top surface position and the bottom boundary position of the target layer and the thickness of the target layer, and the mark layer information is used for indicating the top surface position and the bottom boundary position of a plurality of mark layers and the thickness of each mark layer;
determining an entry window vertical depth based on the destination layer information and the marker layer information of the first oil well and the destination layer information and the marker layer information of the second oil well, wherein the entry window vertical depth is used for indicating the vertical distance between an entry window positioned on the top surface of the destination layer and the ground;
determining the top of an oil layer, an interlayer and the bottom of the oil layer in a target layer of the first oil well when the vertical depth of the entry window is reached;
determining a formation dip angle based on two target points on any one of the top, the interlayer and the bottom of the oil layer, wherein the two target points are points which pass through any one of the layers and are positioned on the same interface;
adjusting a wellbore trajectory of the first well based on the formation dip angle.
2. The method of claim 1, wherein determining the window dip depth based on the destination layer information and marker layer information for the first well and the destination layer information and marker layer information for the second well comprises:
determining a vertical depth difference between a target layer and an adjacent marker layer in the second oil well based on the target layer information and the marker layer information of the second oil well;
and determining the window vertical depth based on the target layer information and the marker layer information of the first oil well and the vertical depth difference.
3. The method of claim 1, wherein determining the top, bottom, and interbed of the formation in the destination zone of the first well upon reaching the entry window dip comprises:
acquiring logging data and logging data of the second oil well;
and when the vertical depth of the entry window is reached, identifying the top, interlayer and bottom of an oil layer in the target layer of the first oil well based on the logging data and logging data of the second oil well.
4. The method of claim 1, wherein the two target points comprise a first target point and a second target point, and wherein determining the formation dip based on the two target points at any one of the top, bottom and top of oil layers comprises:
determining a first vertical depth and a first horizontal displacement corresponding to the first target point;
determining a second vertical depth and a second horizontal displacement corresponding to the second target;
determining a drop depth difference based on the first drop depth and the second drop depth;
determining a displacement difference based on the first horizontal displacement and the second horizontal displacement;
determining the formation dip angle based on the vertical depth difference and the displacement difference.
5. The method of claim 1, wherein adjusting the wellbore trajectory of the first well based on the formation dip angle comprises:
determining the formation dip angle as a complementary angle of a well dip angle corresponding to the well track of the first oil well;
determining a wellbore trajectory for the first oil well based on a complement of the angle of hole.
6. A wellbore trajectory adjusting device after horizontal well window entry is characterized by comprising:
the device comprises an acquisition module, a data processing module and a data processing module, wherein the acquisition module is used for acquiring target layer information and marker layer information of a first oil well and acquiring target layer information and marker layer information of a second oil well, and the second oil well is adjacent to the first oil well;
the destination layer information is used for indicating the top surface position and the bottom boundary position of the destination layer and the thickness of the destination layer, and the mark layer information is used for indicating the top surface position and the bottom boundary position of a plurality of mark layers and the thickness of each mark layer;
the determining module is used for determining the vertical distance between a window on the top surface of the target layer and the ground based on the target layer information and the mark layer information of the first oil well and the target layer information and the mark layer information of the second oil well;
the determining module is further used for determining the top of an oil layer, an interlayer and the bottom of the oil layer in the target layer of the first oil well when the vertical depth of the entry window is reached;
the determining module is further configured to determine a formation dip angle based on two target points on any one of the top, the interlayer, and the bottom of the oil layer, where the two target points are points on the same interface passing through any one of the layers;
and the adjusting module is used for adjusting the well track of the first oil well based on the stratum inclination angle.
7. The apparatus of claim 6, wherein the determining module is configured to determine a drawdown depth difference between a target formation and an adjacent marker formation in the second well based on the target formation information and the marker formation information for the second well; and determining the window vertical depth based on the target layer information and the marker layer information of the first oil well and the vertical depth difference.
8. The apparatus of claim 6, wherein the determining module is configured to obtain logging data and logging data for the second well; and when the vertical depth of the entry window is reached, identifying the top, interlayer and bottom of an oil layer in the target layer of the first oil well based on the logging data and logging data of the second oil well.
9. A computer apparatus comprising one or more processors and one or more memories having at least one program code stored therein, the program code being loaded and executed by the one or more processors to perform the operations performed by the horizontal well window entry wellbore trajectory adjustment method of any of claims 1 to 5.
10. A computer readable storage medium having stored therein at least one program code, the program code being loaded and executed by a processor to perform the operations performed by the horizontal well window entry wellbore trajectory adjustment method of any of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110004439.1A CN114718552A (en) | 2021-01-04 | 2021-01-04 | Method, device, equipment and medium for adjusting borehole trajectory after horizontal well window entering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110004439.1A CN114718552A (en) | 2021-01-04 | 2021-01-04 | Method, device, equipment and medium for adjusting borehole trajectory after horizontal well window entering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114718552A true CN114718552A (en) | 2022-07-08 |
Family
ID=82234694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110004439.1A Pending CN114718552A (en) | 2021-01-04 | 2021-01-04 | Method, device, equipment and medium for adjusting borehole trajectory after horizontal well window entering |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114718552A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105317375A (en) * | 2015-10-15 | 2016-02-10 | 中国石油天然气集团公司 | Target guiding and entering method and device for horizontal well |
| CN108005642A (en) * | 2016-10-31 | 2018-05-08 | 中石化石油工程技术服务有限公司 | Improve the standard the method for well oil-gas Layer Drilling ratio |
| CN108019150A (en) * | 2016-10-31 | 2018-05-11 | 中国石油化工股份有限公司 | A kind of boring method and system |
| US10689954B1 (en) * | 2019-04-24 | 2020-06-23 | Dagang Oil Field Company Of Cnpc | Research method of trajectory design and on-site tracking and adjustment of shale oil horizontal well |
-
2021
- 2021-01-04 CN CN202110004439.1A patent/CN114718552A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105317375A (en) * | 2015-10-15 | 2016-02-10 | 中国石油天然气集团公司 | Target guiding and entering method and device for horizontal well |
| CN108005642A (en) * | 2016-10-31 | 2018-05-08 | 中石化石油工程技术服务有限公司 | Improve the standard the method for well oil-gas Layer Drilling ratio |
| CN108019150A (en) * | 2016-10-31 | 2018-05-11 | 中国石油化工股份有限公司 | A kind of boring method and system |
| US10689954B1 (en) * | 2019-04-24 | 2020-06-23 | Dagang Oil Field Company Of Cnpc | Research method of trajectory design and on-site tracking and adjustment of shale oil horizontal well |
Non-Patent Citations (3)
| Title |
|---|
| 方锡贤;邹辉;张毅丰;田一鸣;张延龙;严俭丰;: "水平井地质导向技术在油气目的层预测中的应用", 石油地质与工程, no. 06, 25 November 2014 (2014-11-25) * |
| 王金荣;王玉善;李国良;唐智博;段传丽;高磊;王颖;: "苏里格气田苏20区块水平井地质导向技术研究", 录井工程, no. 01, 25 March 2018 (2018-03-25) * |
| 黄高鹏;: "浅析水平井现场地质导向应用", 中国石油和化工标准与质量, no. 21, 8 November 2017 (2017-11-08) * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10119385B2 (en) | Formation dip geo-steering method | |
| US9534446B2 (en) | Formation dip geo-steering method | |
| CN105317375B (en) | Horizontal well is inducted into Target process and device | |
| US7546209B2 (en) | Formation dip geo-steering method | |
| CN103774989B (en) | Treat that drilling well Trajectory Design horizontal well geosteering analyzes method with boring dynamic modeling | |
| CN106285476A (en) | A kind of horizontal drilling Real-time Seismic geological syntheses guidance method | |
| CN106437512A (en) | Tracking-while-drilling controlling method for landing track of shale gas horizontal well | |
| CN110359841B (en) | Horizontal well trajectory determination method | |
| CN110984951B (en) | Shale oil development well pattern deployment method | |
| CN113761620B (en) | Shale gas middle gas layer well geological guiding method | |
| CN104251135B (en) | Highly-deviated well space in-place method | |
| CN101936154B (en) | A method for bridging and steering of coalbed methane horizontal well drilling | |
| CN114718552A (en) | Method, device, equipment and medium for adjusting borehole trajectory after horizontal well window entering | |
| US20220222239A1 (en) | Method to improve the accuracy of formation top picks | |
| Rose et al. | Sand body geometry, constrained and predicted during a horizontal drilling campaign in a Lower Cretaceous turbidite sand system, Captain Field, UKCS Block 13/22a | |
| CN112901070B (en) | Method for tracking horizontal well while drilling and control method for controlling drilling direction of drill bit | |
| CN112394416A (en) | Heterogeneous fracture control reservoir prediction method and device | |
| US20250123420A1 (en) | Gas advanced development (gad) workflow | |
| CN115573703A (en) | Calculation method for improving horizontal well stratum contrast precision | |
| CN109736773A (en) | Track tracking method for river sand horizontal well | |
| CN109162690A (en) | A kind of drilling machine intelligence control system | |
| CN119878147A (en) | Method for improving drilling meeting rate of oil and gas reservoir | |
| Zhou | Technical analysis of improving sand body penetration rate in horizontal well | |
| CN107060721A (en) | Branch horizontal well deployment method and device | |
| CN115773104A (en) | Method for acquiring horizontal well stratum vertical depth and true thickness based on logging information |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |