CN113944456B - Drilling depth measurement method, drilling depth measurement system, drilling machine and storage medium - Google Patents
Drilling depth measurement method, drilling depth measurement system, drilling machine and storage medium Download PDFInfo
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- 238000005553 drilling Methods 0.000 title claims abstract description 104
- 238000000691 measurement method Methods 0.000 title claims abstract description 13
- 238000005259 measurement Methods 0.000 title claims description 14
- 238000000034 method Methods 0.000 claims abstract description 58
- 230000008569 process Effects 0.000 claims abstract description 41
- 238000004364 calculation method Methods 0.000 claims description 17
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Classifications
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- 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
- E21B47/04—Measuring depth or liquid level
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- 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
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/10—Slips; Spiders ; Catching devices
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Abstract
The application relates to a drilling depth measurement method, a drilling machine, a drilling system and a storage medium, and relates to the field of drilling technology; when the drill bit is judged to be in contact with the stratum, initial point information of the chuck at the current height is obtained, and initial value information of the chuck height is calculated according to the initial point information; acquiring current value information of the chuck height in the current state in the descending process of the chuck; and calculating the drilling depth information in real time according to the initial value information and the current value information acquired when the chuck travels from top to bottom once. The drilling depth can be automatically measured and calculated.
Description
Technical Field
The present application relates to the field of drilling technology, and in particular, to a drilling depth measurement method, system, drilling machine, and storage medium.
Background
Along with the integration of emerging technologies such as big data, artificial intelligence, cloud computing, mobile interconnection and the like with the traditional industry at a high speed, in resource exploration and development work, more and more drilling machines realize automatic control in the drilling process, basic drilling tool behaviors are changed into control logic so as to realize autonomous execution, and the labor cost of site construction is greatly reduced.
However, the drilling process is an extremely complex interaction process of the drilling tool and the stratum, and particularly in the measurement of drilling depth, many measurement systems cannot well measure the drilling depth in real time, and in many construction sites, the drilling depth is measured by combining manual measurement and experience judgment, so that the purpose of automatic measurement is difficult to realize.
Disclosure of Invention
In order to automatically calculate drilling depth, the application provides a drilling depth measuring method, a drilling machine and a storage medium.
In a first aspect, the present application provides a drilling depth measurement method that adopts the following technical scheme:
a drilling depth measurement method, comprising:
judging whether the drill bit is in contact with the stratum or not;
when the drill bit is judged to be in contact with the stratum, initial point information of the chuck at the current height is obtained, and initial value information of the chuck height is calculated according to the initial point information;
acquiring current value information of the chuck height in the current state in the descending process of the chuck;
and calculating the drilling depth information in real time according to the initial value information and the current value information acquired when the chuck travels from top to bottom once.
Through adopting above-mentioned technical scheme, the chuck is at the in-process of going down, all is through pressing from both sides the initiative drilling rod tight with draw-in groove joint on the initiative drilling rod, at the in-process that the drilling rod is bored, the initiative drilling rod also descends corresponding distance to the distance that the response is on the chuck that the chuck corresponds down. Therefore, the drilling depth can be calculated in real time in the descending process of the chuck by calculating the moving distance of the chuck and updating initial value information serving as a reference.
Preferably, in each process of calculating the initial value information, the lowest point information of the chuck when the chuck drills to the lowest point in the previous time is obtained;
calculating difference information according to the acquired initial point information and the lowest point information when the chuck drills to the lowest point in the previous time;
and calculating and updating initial value information according to the previous initial value information and the acquired difference value information.
By adopting the technical scheme, the mode that the lowest point information and the initial point information update the initial value information in the descending process of the chuck each time obtains the drilling depth of the drill rod by considering the specific information of the first point and the last point, and the accuracy is higher.
Preferably, the chuck obtains the distance from the reference plane through a pull rope sensor,
in the process of updating the initial value information, the following conditions are satisfied:
wherein,for the updated initial value information +.>For the initial value information before update, +.>For the length of the pull cord when the chuck is at the initial point in the current working cycle, < >>Which is the length of the pull cord when the chuck is at the lowest point in the previous work cycle.
Through adopting above-mentioned technical scheme, the mode that adopts stay cord sensor to detect also can comparatively accurate measurement specific distance to also can satisfy the operating mode under its complex condition, and receive external influence less. Therefore, based on the method, the drilling depth of the drill rod can be calculated by considering the specific information of the head point and the tail point, and the accuracy is high.
Preferably, the drilling depth information satisfies:
wherein,for the updated initial value information +.>Is->Length of pull rope at moment +.>Is drilling depth information.
Preferably, the method for judging whether the drill bit is in contact with the stratum comprises the following steps:
acquiring upper oil tank pressure information and lower oil tank pressure information, and acquiring pressure difference information of the upper oil tank and the lower oil tank based on the upper oil tank pressure information and the lower oil tank pressure information;
and monitoring the variation of the pressure difference information in the descending process of the chuck to judge whether the drill bit is in contact with the stratum.
By adopting the technical scheme, the drill bit can not be guaranteed to be just contacted with the stratum in the initial stage of descending of the chuck, so that the accuracy of the drilling depth in the measuring process can be influenced if the part is repeatedly measured. Meanwhile, when the drill bit is in contact with the stratum and the drill bit is used for carrying out drilling pressure on the stratum, the pressure of the upper oil tank is gradually smaller than that of the lower oil tank, so that whether the condition of effective drilling is achieved can be well obtained by judging the pressure information of the upper oil tank and the pressure information of the lower oil tank.
Preferably, determining whether the chuck is gripping the drill rod;
after the chuck is judged to clamp the drill rod, intermittently detecting and acquiring pressure difference information;
in the process of detecting the pressure difference information each time, calculating the pressure difference information acquired at the present time and the pressure difference information acquired at the previous time to obtain variation information;
and when the variable quantity information is larger than the preset threshold value information, the drill bit is considered to be in contact with the stratum.
By adopting the technical scheme, partial collapse of the hole wall can sometimes occur, so that the drill rod can be blocked to a certain extent in the descending process of the drill rod, and the drill rod can be smoothly passed through under the condition of applying certain pressure. Therefore, the mode of setting the threshold information can effectively improve the measurement precision and reduce the occurrence of erroneous judgment.
In a second aspect, the present application provides a drill rod depth automation monitoring system, which adopts the following technical scheme:
a drilling depth measurement system, comprising,
the drilling assembly is used for driving the driving drill rod to drill and comprises a chuck for clamping the driving drill rod and a reference table positioned below the chuck;
a determination module for determining whether the drill bit is in contact with the formation;
the initial point acquisition module is used for acquiring initial point information of the chuck at the current height after the drill bit is judged to be in contact with the stratum;
an initial value calculation module for calculating initial value information of the chuck height according to the initial point information;
the current value acquisition module is used for acquiring current value information of the chuck height in the current state in the descending process of the chuck;
and the drilling depth calculation module is used for calculating the drilling depth information in real time according to the initial value information and the current value information which are acquired when the chuck moves from top to bottom once.
Preferably, the device also comprises a pull rope sensor, wherein two ends of the pull rope sensor are respectively fixed on the chuck and the reference table;
the initial value calculation module includes:
the lowest point obtaining sub-module is used for obtaining the lowest point information of the chuck when the chuck drills to the lowest point in the previous time in the process of calculating the initial value information each time;
the difference value calculation sub-module is used for calculating difference value information according to the acquired initial point information and the lowest point information when the chuck drills to the lowest point in the last time;
the initial value updating sub-module is used for calculating and updating initial value information according to the previous initial value information and the acquired difference value information;
the initial point information, the current value information and the lowest point information are all collected through the pull rope sensor and are related to the collected value of the pull rope sensor.
Through adopting above-mentioned technical scheme, the mode that adopts stay cord sensor to detect also can comparatively accurate measurement specific distance to also can satisfy the operating mode under its complex condition, and receive external influence less. Therefore, based on the method, the drilling depth of the drill rod can be calculated by considering the specific information of the head point and the tail point, and the accuracy is high.
In a third aspect, the present application provides a drilling machine that adopts the following technical scheme:
a drilling rig, comprising:
the drilling assembly is used for driving the driving drill rod to drill and comprises a chuck for clamping the driving drill rod and a reference table positioned below the chuck;
a memory and a processor, the memory having stored thereon a computer program capable of being loaded by the processor and performing any of the drilling depth measurement methods described above.
In a fourth aspect, the present application provides a computer storage medium, capable of storing a corresponding program, having the characteristics of being convenient for realizing automatic measurement and calculation of drill rod depth, and adopting the following technical scheme:
a computer readable storage medium storing a computer program loadable by a processor and performing any of the drilling depth measurement methods described above.
In summary, the present application includes at least one of the following beneficial technical effects:
1. measuring the drilling depth in real time by adopting a full-automatic measurement mode;
2. the precision is higher, and the error is less.
Drawings
FIG. 1 is a schematic illustration of a drilling assembly according to one embodiment of the present invention.
FIG. 2 is a flow chart of a drilling depth measurement method according to an embodiment of the invention.
FIG. 3 is a schematic flow chart of determining whether the drill bit is in contact with the formation according to one embodiment of the present invention.
Fig. 4 is a flowchart illustrating a method for updating initial value information according to an embodiment of the invention.
FIG. 5 is a schematic illustration of the drilling assembly of one embodiment of the present invention wherein the chuck is moved in the direction of the arrow in the figure to perform a work cycle, L being the pull string sensor reading.
Reference numerals illustrate: 1. a chuck; 2. a reference stage; 3. a driving oil cylinder; 4. a pull rope sensor; 5. a driving drill rod; 6. a chuck handle; 7. and a proximity switch.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 to 5 in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In addition, the term "and/or" herein is merely an association relationship describing an association object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In this context, unless otherwise specified, the term "/" generally indicates that the associated object is an "or" relationship.
Embodiments of the invention are described in further detail below with reference to the drawings.
An embodiment of the present invention provides a drilling depth measuring method, wherein the method is constructed based on a drilling machine, and referring to fig. 1, the drilling machine comprises a drilling assembly for driving a drill rod to drill, the drilling assembly comprises a chuck 1 for clamping a driving drill rod 5 and a reference table 2 positioned below the chuck 1, the driving drill rod 5 axially penetrates the reference table 2 and extends downwards, and the driving drill rod 5 is used for being connected with a driven drill rod and driving the driven drill rod to drill downwards. A driving oil cylinder 3 for driving the chuck 1 to lift in the vertical direction is fixed on the reference table 2, and the chuck 1 is controlled to move in the vertical direction under the driving of the driving oil cylinder 3. During drilling, the chuck 1 clamps the active drill rod 5 and moves downwards together, while during tripping, the chuck 1 releases the active drill rod 5 and returns upwards under the action of the drive cylinder 3 to perform a new round of drilling.
Referring to fig. 2, the main flow of the method is described as follows.
Step S1000: it is determined whether the drill bit is in contact with the formation.
In the device meeting the drilling machine, the drill bit is fixed below the driven drill rod and is used for being abutted against the stratum to drill the stratum, in the initial process of drilling, the drill bit is firstly contacted with the surface stratum, and gradually moves downwards along with the increase of the hole depth along with the continuous drilling process. In the process of drilling, the contact between the drill bit and the hole bottom is the contact between the drill bit and the stratum.
In this step, the specific judgment method includes the following steps:
step S1100: and acquiring upper oil tank pressure information and lower oil tank pressure information, and acquiring pressure difference information of the upper oil tank and the lower oil tank based on the upper oil tank pressure information and the lower oil tank pressure information.
The upper tank pressure information and the lower tank pressure information are respectively a specific pressure value of an upper tank of the driving oil cylinder 3 and a specific pressure value of a lower tank of the driving oil cylinder 3, and the detection of the pressure values can measure specific pressure in a liquid pressure meter mode. The pressure difference information of the upper and lower oil tanks is the difference between the upper oil tank pressure information and the lower oil tank pressure information, and the reduction number can be the upper oil tank pressure information or the lower oil tank pressure information.
Step S1200: the amount of change in the pressure difference information is monitored during the downward travel of the chuck 1 to determine whether the drill bit is in contact with the formation.
Under the condition that the drill bit is not in contact with the stratum, the driving drill rod 5, the driven drill rod and the drill bit can be regarded as being hung on a hole or the ground through the chuck 1, at the moment, the pressure information of the upper oil tank is smaller than the pressure information of the lower oil tank, and the pressure difference of the upper oil tank is provided by the gravity of the driving drill rod 5, the driven drill rod and the drill bit. In the drilling process, the pressure of the upper oil tank is larger than that of the lower oil tank because the drill bit is required to be pressed, so that if the pressure difference information of the upper oil tank and the lower oil tank is calculated, the pressure difference information is continuously changed in the process that the drill bit contacts the stratum and is continuously pressed, and the pressure difference information is gradually changed in the same direction along with the increase of the applied pressure. Therefore, whether the drill bit is in contact with the stratum or not can be known by detecting the variation of the pressure difference information.
Referring to fig. 3, as a specific detection flow, it includes:
step S1210: it is determined whether the chuck 1 is gripping a drill rod.
The fact that the chuck 1 clamps the drill rod indicates that relative sliding between the chuck 1 and the driving drill rod 5 cannot occur in the vertical direction, and the chuck 1 is correspondingly clamped on a clamping groove of the driving drill rod 5 to achieve clamping. The determination of whether the chuck 1 is gripping a drill rod may be performed by determining whether the distance between the two parts of the chuck 1 has reached a preset standard by means of the chuck handle 6 and the proximity switch 7. During the process when the chuck 1 is gripping a drill rod, the chuck handle 6 will be in the down position, triggering the proximity switch 7. When the chuck 1 releases the drill rod, the chuck handle 6 will be in the upper setting without triggering the proximity switch 7.
Step S1220: when it is determined that the chuck 1 is clamping the drill rod, the pressure difference information is intermittently detected and acquired.
The pressure difference information is obtained in step S1100, and the intermittent detection refers to continuously collecting the pressure difference information, and the adjacent collecting intervals are constant time constants. And this constant time constant is usually preset by means of programming.
Step S1230: in the process of detecting the pressure difference information each time, the pressure difference information acquired at present and the pressure difference information acquired at the previous time are calculated to obtain variation information.
The pressure difference information acquired in the next time is the pressure difference information under the current acquisition time, and the pressure difference information acquired in the previous time is the pressure difference information under the previous acquisition time. The change amount information characterizes the difference between the pressure difference information acquired at the present time and the pressure difference information acquired at the previous time. As a practical way, one address can be called separately to record the pressure difference information, only two pressure difference information can be recorded, and the pressure difference information can be recorded in a stack recording or stack recording way in the storage process, so that when new pressure difference information is recorded, the pressure difference information recorded at the previous two moments can be erased.
Step S1240: and when the variable quantity information is larger than the preset threshold value information, the drill bit is considered to be in contact with the stratum.
The threshold information refers to a preset constant, the unit of which is the same as the variable information, and the threshold information can be adjusted according to the drilling strength in the actual drilling process. For example, in step S1200, when the drill bit is in contact with the formation and the chuck 1 continues to apply pressure under the action of the driving cylinder 3, the pressure difference information at adjacent moments will be suddenly changed, so that the variation information will be correspondingly suddenly changed, and therefore, when the variation information is greater than the preset threshold information, it can be indicated that the drill bit is in contact with the formation for the first time in the drilling state.
Step S2000: when the drill bit is judged to be in contact with the stratum, initial point information of the chuck 1 at the current height is acquired, and initial value information of the chuck 1 height is calculated according to the initial point information.
The initial point information of the chuck 1 at the current height is collected by adopting a pull rope sensor 4. Specifically, the housing of the pull-cord sensor 4 is fixed to one side of the chuck 1, and a section of its pull cord is connected to the reference table 2. When the chuck 1 moves, the length of the pull cord changes accordingly. Then the initial point information of the chuck 1 at the current height is the corresponding reading of the pull-cord sensor 4. Correspondingly, the acquisition of the initial point information in the step can also be realized by adopting a sensor with infrared distance detection.
Generally, during the continuous descending and ascending processes of the chuck 1, the pull rope sensor 4 outputs a value to indicate the current distance between the chuck 1 and the reference table 2. For convenience of description, in each working cycle (i.e. a process that the chuck 1 clamps the drill rod and the chuck 1 unclamps the drill rod), a point when the drill bit is judged to be in contact with the stratum is defined as an initial point, and a value correspondingly output by the pull rope sensor 4 at the point is information of the initial point.
The initial value information is a value associated with and calculated from the initial point information, and characterizes the sum of drilling depths when the chuck 1 is located at the initial point after a plurality of work cycles. Referring to fig. 4, as a specific calculation method, the steps include:
step S2100: in each calculation of the initial value information, the nadir information of the chuck 1 when the chuck 1 was drilled to the nadir the previous time is acquired.
Secondly, the drilling of the chuck 1 to the lowest point is characterized by the position of the chuck 1 when the chuck 1 releases the drill rod, and the lowest point information in this position is also a value obtained by the pull rope sensor 4, which is characterized by the distance between the chuck 1 and the reference table 2 when the chuck 1 is at the lowest point. The last time the chuck 1 was drilled to its lowest point is characterized as being in the state of the chuck 1 releasing the drill rod in the previous working cycle.
Step S2200: difference information is calculated from the acquired initial point information and the lowest point information when the chuck 1 was drilled to the lowest point the previous time.
Wherein the difference information characterizes a difference between the initial point information and the nadir information, and also characterizes a difference between a pull rope length at the initial point in the previous work cycle and a pull rope length at the nadir in the previous work cycle.
Step S2300: and calculating and updating initial value information according to the previous initial value information and the acquired difference value information.
Wherein the previous initial value information characterizes the pull-cord sensor 4 reading at the initial point of the previous work cycle. As a specific calculation mode, it satisfies the function:
wherein,for the updated initial value information +.>For the initial value information before update, +.>For the length of the pull cord when the chuck 1 is at the initial point in the current working cycle, +.>Which is the length of the pull cord when the chuck 1 is at its lowest point in the previous work cycle. Thus (S)>I.e. the initial point information in the current working cycle,/->I.e. the nadir information when the chuck 1 was drilled to the nadir the previous time. Wherein (1)>Initial point information collected by the chuck when the work cycle is first performed.
Initial value information calculated by the above functionI.e. initial value information characterizing the current duty cycle at the initial point, the duty cycle being employed in subsequent calculation stepsThe initial value information is used as a reference standard.
Step S3000: during the descending process of the chuck 1, the current value information of the height of the chuck 1 in the current state is acquired.
Referring to fig. 5, where the chuck 1 is lowered, it refers to a process from gripping the pipe by the chuck 1 to releasing the pipe by the chuck 1 in a working cycle. The current value information of the height of the chuck 1 in the current state is also the corresponding reading L obtained by the pull rope sensor 4, which also characterizes the distance between the chuck 1 and the reference table 2 in the current state.
Step S4000: and calculating the drilling depth information in real time according to the initial value information and the current value information acquired by the chuck 1 in the same working cycle.
The initial value information and the current value information are corresponding values obtained when the chuck 1 travels from top to bottom once, and the drilling depth information is the current drilling depth. Specifically, the drilling depth information satisfies the following function:
wherein,for the updated initial value information +.>For the current value information, the representation is +.>Length of pull rope at moment +.>Is drilling depth information.
It can be seen that the drilling depth information obtained by the detection method is obtained by monitoring two states of the chuck 1 when the chuck is clamped and unclamped and adjusting initial value information in each calculation process, and then subtracting the real-time reading of the pull rope sensor 4 in the current state from the initial value information to know the total drilling depth in the current drilling process. Thus, this approach also does not require a calculation of the travel distance of the chuck 1 for each work cycle, but rather correspondingly calculates drilling depth information by calculating initial value information in each work cycle.
Based on the same inventive concept, the embodiment of the application also discloses a drilling depth measurement system, which comprises:
the drilling assembly is used for driving the driving drill rod 5 to drill, the drilling assembly comprises a chuck 1 used for clamping the driving drill rod 5 and a reference table 2 positioned below the chuck 1, and a driving oil cylinder 3 used for driving the chuck 1 to lift in the vertical direction is fixed on the reference table 2.
The pull rope sensor 4 is fixed on the chuck 1 and the reference table 2 at two ends respectively.
And the judging module is used for judging whether the drill bit is in contact with the stratum or not.
And the oil tank pressure information acquisition sub-module is used for acquiring the oil tank pressure information and the oil tank pressure information.
And the pressure difference information acquisition sub-module is used for acquiring the pressure difference information of the upper and lower oil tanks based on the upper oil tank pressure information and the lower oil tank pressure information.
And the monitoring and judging sub-module is used for monitoring the variation of the pressure difference information in the descending process of the chuck 1 so as to judge whether the drill bit is in contact with the stratum.
And the initial point acquisition module is used for acquiring initial point information of the chuck 1 at the current height after the drill bit is judged to be in contact with the stratum.
An initial value calculation module for calculating initial value information of the height of the chuck 1 based on the initial point information.
The lowest point obtaining sub-module is used for obtaining the lowest point information of the chuck 1 when the chuck 1 drills to the lowest point in the previous time in the process of calculating the initial value information each time.
And the difference value calculating sub-module is used for calculating difference value information according to the acquired initial point information and the lowest point information when the chuck 1 drills to the lowest point in the last time.
And the initial value updating sub-module is used for calculating and updating initial value information according to the previous initial value information and the acquired difference value information. Wherein, the initial point information, the current value information and the lowest point information are all collected by the pull rope sensor 4 and are related to the collected value of the pull rope sensor 4.
The current value obtaining module is used for obtaining the current value information of the height of the chuck 1 in the current state in the descending process of the chuck 1.
And the drilling depth calculation module is used for calculating the drilling depth information in real time according to the initial value information and the current value information acquired when the chuck 1 moves from top to bottom once.
Wherein the initial value information satisfies the function:
for the updated initial value information +.>For the initial value information before update, +.>For the length of the pull cord when the chuck 1 is at the initial point in the current working cycle, +.>Which is the length of the pull cord when the chuck 1 is at its lowest point in the previous work cycle. Wherein (1)>Initial point information collected by the chuck when the work cycle is first performed.
The drilling depth information satisfies the following function:
for the updated initial value information +.>For the current value information, the representation is +.>And the length of the pull rope at the moment, and h is drilling depth information.
Based on the same inventive concept, an embodiment of the present invention provides a drilling machine comprising a drilling assembly for driving an active drill rod 5 into a drill, the drilling assembly comprising a chuck 1 for holding the active drill rod 5 and a reference table 2 located below the chuck 1, a memory and a processor. The memory has stored thereon a computer program that can be loaded by a processor and that performs a drilling depth measurement method as in any of fig. 2 to 4.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-described division of the functional modules is illustrated, and in practical application, the above-described functional allocation may be performed by different functional modules according to needs, i.e. the internal structure of the apparatus is divided into different functional modules to perform all or part of the functions described above. The specific working processes of the above-described systems, devices and units may refer to the corresponding processes in the foregoing method embodiments, which are not described herein.
In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods may be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the modules or units is merely a logical functional division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
Embodiments of the present invention also provide a computer readable storage medium storing instructions capable of implementing the steps described in the flowcharts of fig. 2-4 when loaded and executed by a processor.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be embodied in essence or a part contributing to the prior art or all or part of the technical solution, in the form of a software product stored in a storage medium, including several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The foregoing embodiments are only used to describe the technical solutions of the present application in detail, but the descriptions of the foregoing embodiments are only used to help understand the method and the core idea of the present invention, and should not be construed as limiting the present invention. Variations or alternatives, which are easily conceivable by those skilled in the art, are included in the scope of the present invention.
Claims (6)
1. A drilling depth measurement method, comprising:
judging whether the drill bit is in contact with the stratum or not;
when the drill bit is judged to be in contact with the stratum, initial point information of the chuck (1) at the current height is obtained, and initial value information of the height of the chuck (1) is calculated according to the initial point information;
acquiring current value information of the height of the chuck (1) in a current state in the descending process of the chuck (1);
calculating drilling depth information in real time according to initial value information and current value information acquired when the chuck (1) travels from top to bottom once;
acquiring the lowest point information of the chuck (1) when the chuck (1) drills to the lowest point in the process of calculating the initial value information each time;
calculating difference information according to the acquired initial point information and the lowest point information when the chuck (1) drills to the lowest point in the previous time;
calculating and updating initial value information according to the previous initial value information and the acquired difference value information;
the chuck (1) acquires the distance between the chuck and a reference plane through a pull rope sensor (4),
in the process of updating the initial value information, the following conditions are satisfied:
wherein->For the updated initial value information +.>For the initial value information before update, +.>For the length of the pull cord when the chuck (1) is located at the initial point in the current working cycle, +.>Is the length of the pull rope when the chuck (1) is positioned at the lowest point in the previous working cycle;
the drilling depth information satisfies:
，
wherein,for the updated initial value information +.>Is->Length of pull rope at moment +.>Is drilling depth information.
2. The drilling depth measurement method of claim 1, wherein the determining whether the drill bit is in contact with the formation comprises:
acquiring upper oil tank pressure information and lower oil tank pressure information, and acquiring pressure difference information of the upper oil tank and the lower oil tank based on the upper oil tank pressure information and the lower oil tank pressure information;
the variation of the pressure difference information is monitored during the descending of the chuck (1) to judge whether the drill bit is in contact with the stratum.
3. The drilling depth measurement method of claim 2, wherein,
judging whether the chuck (1) clamps the drill rod or not;
after the chuck (1) is judged to clamp the drill rod, intermittently detecting and acquiring pressure difference information;
in the process of detecting the pressure difference information each time, calculating the pressure difference information acquired at the present time and the pressure difference information acquired at the previous time to obtain variation information;
and when the variable quantity information is larger than the preset threshold value information, the drill bit is considered to be in contact with the stratum.
4. A drilling depth measurement system, comprising,
the drilling assembly is used for driving the driving drill rod (5) to drill and comprises a chuck (1) for clamping the driving drill rod (5) and a reference table (2) positioned below the chuck (1);
a determination module for determining whether the drill bit is in contact with the formation;
the initial point acquisition module is used for acquiring initial point information of the chuck (1) at the current height after the drill bit is judged to be in contact with the stratum;
an initial value calculation module for calculating initial value information of the height of the chuck (1) according to the initial point information;
the current value acquisition module is used for acquiring current value information of the height of the chuck (1) in the current state in the descending process of the chuck (1);
the drilling depth calculation module is used for calculating drilling depth information in real time according to initial value information and current value information acquired when the chuck (1) moves from top to bottom once;
the device also comprises a pull rope sensor (4), wherein two ends of the pull rope sensor (4) are respectively fixed on the chuck (1) and the reference table (2);
the initial value calculation module includes:
the lowest point obtaining sub-module is used for obtaining the lowest point information of the chuck (1) when the chuck (1) drills to the lowest point in the previous time in the process of calculating the initial value information each time;
the difference value calculation sub-module is used for calculating difference value information according to the acquired initial point information and the lowest point information when the chuck (1) drills to the lowest point in the last time;
the initial value updating sub-module is used for calculating and updating initial value information according to the previous initial value information and the acquired difference value information;
the initial point information, the current value information and the lowest point information are all collected through the stay rope sensor (4) and are related to the collected value of the stay rope sensor (4).
5. A drilling machine, comprising:
the drilling assembly is used for driving the driving drill rod (5) to drill and comprises a chuck (1) for clamping the driving drill rod (5) and a reference table (2) positioned below the chuck (1);
a memory and a processor, the memory having stored thereon a computer program capable of being loaded by the processor and performing the method according to any of claims 1 to 3.
6. A computer readable storage medium, characterized in that a computer program is stored which can be loaded by a processor and which performs the method according to any of claims 1 to 3.
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