CN113356793A - Oil layer protector and application of oil layer protector in oil extraction engineering risk well - Google Patents
Oil layer protector and application of oil layer protector in oil extraction engineering risk well Download PDFInfo
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- CN113356793A CN113356793A CN202110860143.XA CN202110860143A CN113356793A CN 113356793 A CN113356793 A CN 113356793A CN 202110860143 A CN202110860143 A CN 202110860143A CN 113356793 A CN113356793 A CN 113356793A
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- 238000007789 sealing Methods 0.000 claims description 114
- 230000001012 protector Effects 0.000 claims description 43
- 230000000670 limiting effect Effects 0.000 claims description 16
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- 238000000605 extraction Methods 0.000 claims description 3
- 210000003934 vacuole Anatomy 0.000 claims description 3
- XQCFHQBGMWUEMY-ZPUQHVIOSA-N Nitrovin Chemical compound C=1C=C([N+]([O-])=O)OC=1\C=C\C(=NNC(=N)N)\C=C\C1=CC=C([N+]([O-])=O)O1 XQCFHQBGMWUEMY-ZPUQHVIOSA-N 0.000 claims 1
- 239000003129 oil well Substances 0.000 description 21
- 239000007788 liquid Substances 0.000 description 16
- 238000010304 firing Methods 0.000 description 11
- 230000009471 action Effects 0.000 description 10
- 230000000694 effects Effects 0.000 description 8
- 230000005484 gravity Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 238000005086 pumping Methods 0.000 description 6
- 230000007613 environmental effect Effects 0.000 description 5
- 238000011084 recovery Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
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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
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/08—Valve arrangements for boreholes or wells in wells responsive to flow or pressure of the fluid obtained
-
- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/042—Threaded
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Pressure Vessels And Lids Thereof (AREA)
Abstract
The invention provides an oil layer protector and application of the oil layer protector in an oil extraction engineering risk well, and relates to the technical field of oil exploitation. The scheme of the invention is as follows: including top connection, level pressure sliding sleeve and lower clutch, the top connection forms the cavity after being connected with the lower clutch, and the level pressure sliding sleeve is located the cavity, and the top connection is provided with the first draining through-hole that is used for with the cavity intercommunication, and the lower clutch is provided with the second draining through-hole that is used for with the cavity intercommunication, and the top connection is provided with and is used for making the level pressure sliding sleeve stop up the locating part that first draining through-hole and second draining through-hole were stopped up. On the first hand, the invention can avoid risk delay, prevent blowout, and has the oil drainage function of normal oil well; in a second aspect, the embodiment of the present application provides an application that an oil reservoir protector is applied to oil recovery engineering operation, and it can keep the well head clean, the environmental protection.
Description
Technical Field
The invention relates to the technical field of oil exploitation, in particular to an oil layer protector and application thereof.
Background
When an oil extraction process of an oil well pump is utilized in an oil field, operations such as pulling up and down an oil pipe, detecting a pump, replacing a sucker rod and the like are needed in the operation process, the liquid in the oil pipe is brought to the ground, the environment is polluted, blowout can be caused in severe cases, potential safety hazards are brought to production and operation, and economic loss is caused.
At present, the traditional protection means comprises tools such as a pull rod oil drain device and a firing pin oil drain device, wherein the pull rod type oil drain device is arranged in an inclined well, a horizontal well is not controlled to be opened and closed due to the influence of well conditions, and the firing pin type oil drain device is arranged in the inclined well and the horizontal well, and the gravity action during opening is in an out-of-control state on the tools.
Disclosure of Invention
The invention aims to provide an oil layer protector which can avoid risk delay and prevent blowout and has the oil drainage function of a normal oil well.
Another object of the present invention is to provide an application of a reservoir protector, which can keep the well head clean and protect the environment.
The embodiment of the invention is realized by the following steps:
on the one hand, this application embodiment provides an oil reservoir protector, including top connection, level pressure sliding sleeve and lower clutch, vacuole formation after top connection and lower clutch are connected, and the level pressure sliding sleeve is located the cavity, and the top connection is provided with the first draining through-hole that is used for with the cavity intercommunication, and the lower clutch is provided with the second draining through-hole that is used for with the cavity intercommunication, and the top connection is provided with and is used for making the level pressure sliding sleeve stop up the locating part that first draining through-hole and second draining through-hole were stopped up.
In some embodiments of the invention, a first sealing element for sealing the first oil drainage through hole is installed at one side of the constant pressure sliding sleeve.
In some embodiments of the present invention, the first sealing element is a sealing rubber ring, and the sealing rubber ring is sleeved on the constant pressure sliding sleeve.
In some embodiments of the invention, a second sealing element for sealing the second oil drainage through hole is installed at one side of the constant pressure sliding sleeve.
In some embodiments of the present invention, the second sealing element is a sealing rubber ring, and the sealing rubber ring is sleeved on the constant pressure sliding sleeve.
In some embodiments of the present invention, the position-limiting member includes a constant-pressure pin, the constant-pressure sliding sleeve is provided with a pin hole for being matched with the constant-pressure pin, and the constant-pressure pin penetrates through the upper joint to fix the constant-pressure sliding sleeve.
In some embodiments of the present invention, the upper joint is cylindrical, the inner sidewall of one end of the upper joint is provided with a thread, the lower joint is cylindrical, the outer sidewall of one end of the lower joint is provided with a thread, and the upper joint and the lower joint are connected by a thread.
In some embodiments of the present invention, the above-mentioned further comprises a tubing, and the upper joint is connected with the tubing by a screw thread.
In some embodiments of the present invention, the above-mentioned further comprises a tubing, and the lower joint is connected with the tubing by a screw thread.
In a second aspect, the embodiment of the application provides an application that oil reservoir protector is applied to oil recovery engineering risk well, and it can keep the well head clean, the environmental protection.
Compared with the prior art, the embodiment of the invention has at least the following advantages or beneficial effects:
the utility model provides an oil reservoir protector, includes top connection, level pressure sliding sleeve and lower clutch, and the top connection forms the cavity after being connected with the lower clutch, and the level pressure sliding sleeve is located the cavity, and the top connection is provided with the first draining through-hole that is used for with the cavity intercommunication, and the lower clutch is provided with the second draining through-hole that is used for with the cavity intercommunication, and the top connection is provided with and is used for making the level pressure sliding sleeve stop up the locating part that first draining through-hole and second draining through-hole were stopped up.
In the above embodiment, an oil layer protector comprises an upper joint, a constant pressure sliding sleeve and a lower joint, wherein the upper joint and the lower joint form a cavity after being connected, the constant pressure sliding sleeve is located in the cavity and can slide in the cavity (slide relative to the upper joint and the lower joint), further, the upper joint is provided with a first oil drainage through hole for communicating with the cavity, the lower joint is provided with a second oil drainage through hole for communicating with the cavity, the initial state of the constant pressure sliding sleeve is fixed by a limiting piece, namely the initial state of the constant pressure sliding sleeve blocks the first oil drainage through hole and the second oil drainage through hole, the oil layer protector can be suitable for different well conditions and well depths and is suitable for different formation pressures and oil well structures, the oil layer protector is installed at the upper end of an oil well pump during specific use, then the limiting effect of the limiting piece on the constant pressure sliding sleeve is relieved, and the constant pressure sliding sleeve slides to the lower joint under the action of gravity, at the moment, the first oil drainage through hole and the second oil drainage through hole are not blocked by the constant pressure sliding sleeve any more, oil in an oil well rises into the oil layer protector from the bottom of the oil pipe under the action of the oil pump, and finally oil is drained from the first oil drainage through hole of the upper joint and the second oil drainage through hole of the lower joint; furthermore, a first sealing element for sealing the first oil drainage through hole is installed on one side of the constant pressure sliding sleeve, the first sealing element is installed on one side of the constant pressure sliding sleeve, and the first oil drainage through hole can be better sealed after the first sealing element is installed on the constant pressure sliding sleeve, so that oil leakage is prevented; furthermore, the first sealing element is a sealing rubber ring which is sleeved on the constant pressure sliding sleeve, and the sealing rubber ring has elasticity and can extrude the first oil drainage through hole after being sleeved on the constant pressure sliding sleeve so as to enlarge the sealing area and improve the sealing effect; furthermore, a second sealing element for sealing the second oil drainage through hole is installed on one side of the constant pressure sliding sleeve, a second sealing element is installed on one side of the constant pressure sliding sleeve, and the second oil drainage through hole can be better sealed after the second sealing element is installed on the constant pressure sliding sleeve, so that oil leakage is prevented; further, the second sealing member is the sealing rubber circle, and the constant pressure sliding sleeve is located to the sealing rubber circle cover, and the second sealing member is the sealing rubber circle, and the constant pressure sliding sleeve is located to the sealing rubber circle cover, because the sealing rubber circle has elasticity, extrudees the second draining through-hole after the constant pressure sliding sleeve is located to the sealing rubber circle cover and can enlarge sealing area, improves sealed effect.
In this embodiment, this oil reservoir protector has solved the difficult point among the prior art, when the oil field utilized oil-well pump oil recovery technology at present, operation such as oil pipe need be played down in the operation process, examine the pump, change the sucker rod, this is taken to ground along with the inside liquid of oil pipe, the polluted environment, probably arouse the blowout when serious, bring the potential safety hazard for production and operation, cause economic loss, this just needs an instrument, in playing oil pipe or other construction process, can prevent that the liquid in the pit shaft from returning the well head, can also release the liquid in the pit shaft, prevent that liquid from being taken to ground. The traditional protection means comprises tools such as a pull rod oil drain device, a firing pin oil drain device and the like, wherein the pull rod type oil drain device is arranged in an inclined well, a horizontal well is influenced by well conditions, a switch is not controlled, the firing pin oil drain device is arranged in the inclined well and the horizontal well, the gravity action during opening is in an out-of-control state on the tools, when the traditional oil drain device works in a special risk well, a pumping rod 2 needs to be lifted out when the pull rod oil drain device drains oil, well blowout risks exist, the firing pin oil drain device needs to lift out a whole pumping rod pipe column, well killing can be carried out, and no operation time exists; the oil layer protector consists of an upper joint, a constant pressure sliding sleeve, a limiting part and a lower joint. The oil reservoir protector adapts to various well conditions, go into the preset position as required, through the fixed constant pressure sliding sleeve of constant pressure pin, open the constant pressure sliding sleeve as required, liquid in the oil pipe is arranged to the oil jacket annular space in, it is clean to keep the well head, the environmental protection, can be directed against different well conditions and well depths, adapt to different lamination forces and oil well structures, install in the oil-well pump upper end, can directly suppress in the tubular column when with the risk operation, open the flowing back valve, implement the kill-job, avoid the risk delay, prevent the blowout, the draining function of normal oil well has simultaneously.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of an oil reservoir protector according to an embodiment of the present invention.
The following are marked in the figure: 1-upper joint, 2-lower joint, 3-constant pressure sliding sleeve, 4-constant pressure pin, 5-first sealing element and 6-second sealing element.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the embodiments of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are usually placed in when used, the orientations or positional relationships are only used for convenience of describing the present invention and simplifying the description, but the terms do not indicate or imply that the devices or elements indicated must have specific orientations, be constructed in specific orientations, and operate, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not require that the components be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the embodiments of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Examples
Please refer to fig. 1. This embodiment provides an oil reservoir protector, including top connection 1, level pressure sliding sleeve 3 and lower clutch 2, vacuole formation after top connection 1 is connected with lower clutch 2, level pressure sliding sleeve 3 is located the cavity, top connection 1 is provided with and is used for the first draining through-hole with the cavity intercommunication, lower clutch 2 is provided with and is used for the second draining through-hole with the cavity intercommunication, top connection 1 is provided with and is used for making level pressure sliding sleeve 3 with the locating part that first draining through-hole and second draining through-hole stopped up.
In the above embodiment, an oil layer protector is composed of an upper joint 1, a constant pressure sliding sleeve 3 and a lower joint 2, wherein the upper joint 1 and the lower joint 2 are connected to form a cavity, the constant pressure sliding sleeve 3 is located in the cavity and can slide in the cavity (slide relative to the upper joint 1 and the lower joint 2), further, the upper joint 1 is provided with a first oil drainage through hole for communicating with the cavity, the lower joint 2 is provided with a second oil drainage through hole for communicating with the cavity, the initial state of the constant pressure sliding sleeve 3 is fixed by a limiting piece, namely, the initial state of the constant pressure sliding sleeve 3 blocks the first oil drainage through hole and the second oil drainage through hole, the oil layer protector can be applied to different well conditions and well depths and is applied to different formation pressures and oil well structures, the oil layer protector is installed at the upper end during specific use, and then the limiting effect of the limiting piece on the constant pressure sliding sleeve 3 is released, the constant pressure sliding sleeve 3 slides towards the lower joint 2 under the action of gravity, at the moment, the constant pressure sliding sleeve 3 does not block the first oil drainage through hole and the second oil drainage through hole any more, oil in an oil well rises from the bottom of an oil pipe into the oil layer protector under the action of an oil pump, and finally oil is drained from the first oil drainage through hole of the upper joint 1 and the second oil drainage through hole of the lower joint 2; furthermore, a first sealing element 5 for sealing the first oil drainage through hole is installed on one side of the constant pressure sliding sleeve 3, the first sealing element 5 is installed on one side of the constant pressure sliding sleeve 3, and the first oil drainage through hole can be better sealed after the constant pressure sliding sleeve 3 is installed with the first sealing element 5, so that oil leakage is prevented; furthermore, the first sealing element 5 is a sealing rubber ring which is sleeved on the constant pressure sliding sleeve 3, and due to the elasticity of the sealing rubber ring, the sealing rubber ring is sleeved on the constant pressure sliding sleeve 3 and then extrudes the first oil drainage through hole, so that the sealing area can be enlarged, and the sealing effect is improved; furthermore, a second sealing element 6 for sealing the second oil drainage through hole is installed at one side of the constant pressure sliding sleeve 3, the second sealing element 6 is installed at one side of the constant pressure sliding sleeve 3, and the second oil drainage through hole can be better sealed after the second sealing element 6 is installed on the constant pressure sliding sleeve 3, so that oil leakage is prevented; further, second sealing member 6 is the sealing rubber circle, and the constant pressure sliding sleeve 3 is located to the sealing rubber circle cover, and second sealing member 6 is the sealing rubber circle, and the constant pressure sliding sleeve 3 is located to the sealing rubber circle cover, because the sealing rubber circle has elasticity, extrudees the second draining through-hole and can enlarge sealing area behind the sealing rubber circle cover is located constant pressure sliding sleeve 3, improves sealed effect.
In this embodiment, this oil reservoir protector has solved the difficult point among the prior art, when the oil field utilized oil-well pump oil recovery technology at present, operation such as oil pipe need be played down in the operation process, examine the pump, change the sucker rod, this is taken to ground along with the inside liquid of oil pipe, the polluted environment, probably arouse the blowout when serious, bring the potential safety hazard for production and operation, cause economic loss, this just needs an instrument, in playing oil pipe or other construction process, can prevent that the liquid in the pit shaft from returning the well head, can also release the liquid in the pit shaft, prevent that liquid from being taken to ground. The traditional protection means comprises tools such as a pull rod oil drain device, a firing pin oil drain device and the like, wherein the pull rod type oil drain device is arranged in an inclined well, a horizontal well is influenced by well conditions, a switch is not controlled, the firing pin oil drain device is arranged in the inclined well and the horizontal well, the gravity action during opening is in an out-of-control state on the tools, when the traditional oil drain device works in a special risk well, a pumping rod 2 needs to be lifted out when the pull rod oil drain device drains oil, well blowout risks exist, the firing pin oil drain device needs to lift out a whole pumping rod pipe column, well killing can be carried out, and no operation time exists; this oil reservoir protector comprises top connection 1, level pressure sliding sleeve 3, locating part, lower clutch 2. The oil reservoir protector adapts to various well conditions, go into preset position as required, through the fixed constant pressure sliding sleeve 3 of constant pressure pin 4, open constant pressure sliding sleeve 3 as required, liquid in the oil pipe is arranged to the oil jacket annular space in, it is clean to keep the well head, the environmental protection, can be directed against different well conditions and well depths, adapt to different ground pressure and oil well structures, install in the oil-well pump upper end, can directly suppress in the tubular column when with the risk operation, open the flowing back valve, implement the kill-job, avoid the risk delay, prevent the blowout, the draining function of normal oil well has simultaneously.
In some embodiments of the invention, a first sealing member 5 for sealing the first oil drainage through hole is installed at one side of the constant pressure sliding sleeve 3.
In this embodiment, first sealing member 5 is installed to one side of level pressure sliding sleeve 3, can realize better sealed to first draining through-hole after level pressure sliding sleeve 3 installs first sealing member 5, prevents the oil leak.
In some embodiments of the present invention, the first sealing element 5 is a sealing rubber ring, and the sealing rubber ring is sleeved on the constant pressure sliding sleeve 3.
In this embodiment, first sealing member 5 is the sealing rubber circle, and the constant pressure sliding sleeve 3 is located to the sealing rubber circle cover, because the sealing rubber circle has elasticity, the sealing rubber circle cover is located and is pushed first draining through-hole after the constant pressure sliding sleeve 3 and can enlarge sealing area, improves sealed effect.
In some embodiments of the invention, a second sealing member 6 for sealing the second oil drainage through hole is installed at one side of the constant pressure sliding sleeve 3.
In this embodiment, second sealing member 6 is installed to one side of level pressure sliding sleeve 3, can realize better sealed to the second draining through-hole after level pressure sliding sleeve 3 installs second sealing member 6, prevents the oil leak.
In some embodiments of the present invention, the second sealing element 6 is a sealing rubber ring, and the sealing rubber ring is sleeved on the constant pressure sliding sleeve 3.
In this embodiment, second sealing member 6 is the sealing rubber circle, and the constant pressure sliding sleeve 3 is located to the sealing rubber circle cover, because the sealing rubber circle has elasticity, the sealing rubber circle cover is located and is pushed the second draining through-hole after the constant pressure sliding sleeve 3 and can enlarge sealing area, improves sealed effect.
In some embodiments of the present invention, the limiting member includes a constant pressure pin 4, the constant pressure sliding sleeve 3 is provided with a pin hole for cooperating with the constant pressure pin 4, and the constant pressure pin 4 penetrates through the upper joint 1 to fix the constant pressure sliding sleeve 3.
In this embodiment, the limiting member is a constant pressure pin 4, and the constant pressure pin 4 penetrates through the upper joint 1 and is inserted into a pin hole of the constant pressure sliding sleeve 3, so that the device is suitable for oil strings of various sizes in an oil field, and the size (diameter) of the shearing pin is different according to different installation positions.
In some embodiments of the present invention, the upper connector 1 and the lower connector 2 are detachably connected.
In this embodiment, the connected mode of top connection 1 and lower clutch 2 is for dismantling the connection, conveniently dismantles and simple to operate later maintenance.
In some embodiments of the present invention, the upper joint 1 is cylindrical, the inner sidewall of one end of the upper joint 1 is provided with threads, the lower joint 2 is cylindrical, the outer sidewall of one end of the lower joint 2 is provided with threads, and the upper joint 1 and the lower joint 2 are connected by threads.
In this embodiment, top connection 1 is cylindrical, and lower clutch 2 also is cylindrical, and top connection 1 passes through threaded connection with lower clutch 2, and level pressure sliding sleeve 3 is located the cavity that top connection 1 and lower clutch 2 formed, and top connection 1 and lower clutch 2 adopt threaded connection can easy to assemble and dismantle, the later maintenance of being convenient for.
In some embodiments of the present invention, the present invention further comprises a tubing, and the upper joint 1 is connected with the tubing by a thread.
In this embodiment, the top connection 1 and the oil pipe are connected by a thread to facilitate installation and disassembly.
In some embodiments of the invention, the device further comprises an oil pipe, and the lower joint 2 is connected with the oil pipe through threads.
In this embodiment, the lower joint 2 and the oil pipe are connected by screw threads, so that the installation and the disassembly are convenient.
In summary, in one aspect, an embodiment of the present invention provides an oil layer protector, including an upper joint 1, a constant pressure sliding sleeve 3, and a lower joint 2, where the upper joint 1 is connected with the lower joint 2 to form a cavity, the constant pressure sliding sleeve 3 is located in the cavity, the upper joint 1 is provided with a first oil drainage through hole for communicating with the cavity, the lower joint 2 is provided with a second oil drainage through hole for communicating with the cavity, and the upper joint 1 is provided with a limiting member for enabling the constant pressure sliding sleeve 3 to block the first oil drainage through hole and the second oil drainage through hole.
In the above embodiment, an oil layer protector is composed of an upper joint 1, a constant pressure sliding sleeve 3 and a lower joint 2, wherein the upper joint 1 and the lower joint 2 are connected to form a cavity, the constant pressure sliding sleeve 3 is located in the cavity and can slide in the cavity (slide relative to the upper joint 1 and the lower joint 2), further, the upper joint 1 is provided with a first oil drainage through hole for communicating with the cavity, the lower joint 2 is provided with a second oil drainage through hole for communicating with the cavity, the initial state of the constant pressure sliding sleeve 3 is fixed by a limiting piece, namely, the initial state of the constant pressure sliding sleeve 3 blocks the first oil drainage through hole and the second oil drainage through hole, the oil layer protector can be applied to different well conditions and well depths and is applied to different formation pressures and oil well structures, the oil layer protector is installed at the upper end during specific use, and then the limiting effect of the limiting piece on the constant pressure sliding sleeve 3 is released, the constant pressure sliding sleeve 3 slides towards the lower joint 2 under the action of gravity, at the moment, the constant pressure sliding sleeve 3 does not block the first oil drainage through hole and the second oil drainage through hole any more, oil in an oil well rises from the bottom of an oil pipe into the oil layer protector under the action of an oil pump, and finally oil is drained from the first oil drainage through hole of the upper joint 1 and the second oil drainage through hole of the lower joint 2; furthermore, a first sealing element 5 for sealing the first oil drainage through hole is installed on one side of the constant pressure sliding sleeve 3, the first sealing element 5 is installed on one side of the constant pressure sliding sleeve 3, and the first oil drainage through hole can be better sealed after the constant pressure sliding sleeve 3 is installed with the first sealing element 5, so that oil leakage is prevented; furthermore, the first sealing element 5 is a sealing rubber ring which is sleeved on the constant pressure sliding sleeve 3, and due to the elasticity of the sealing rubber ring, the sealing rubber ring is sleeved on the constant pressure sliding sleeve 3 and then extrudes the first oil drainage through hole, so that the sealing area can be enlarged, and the sealing effect is improved; furthermore, a second sealing element 6 for sealing the second oil drainage through hole is installed at one side of the constant pressure sliding sleeve 3, the second sealing element 6 is installed at one side of the constant pressure sliding sleeve 3, and the second oil drainage through hole can be better sealed after the second sealing element 6 is installed on the constant pressure sliding sleeve 3, so that oil leakage is prevented; further, second sealing member 6 is the sealing rubber circle, and the constant pressure sliding sleeve 3 is located to the sealing rubber circle cover, and second sealing member 6 is the sealing rubber circle, and the constant pressure sliding sleeve 3 is located to the sealing rubber circle cover, because the sealing rubber circle has elasticity, extrudees the second draining through-hole and can enlarge sealing area behind the sealing rubber circle cover is located constant pressure sliding sleeve 3, improves sealed effect.
In this embodiment, this oil reservoir protector has solved the difficult point among the prior art, when the oil field utilized oil-well pump oil recovery technology at present, operation such as oil pipe need be played down in the operation process, examine the pump, change the sucker rod, this is taken to ground along with the inside liquid of oil pipe, the polluted environment, probably arouse the blowout when serious, bring the potential safety hazard for production and operation, cause economic loss, this just needs an instrument, in playing oil pipe or other construction process, can prevent that the liquid in the pit shaft from returning the well head, can also release the liquid in the pit shaft, prevent that liquid from being taken to ground. The traditional protection means comprises tools such as a pull rod oil drain device, a firing pin oil drain device and the like, wherein the pull rod type oil drain device is arranged in an inclined well, a horizontal well is influenced by well conditions, a switch is not controlled, the firing pin oil drain device is arranged in the inclined well and the horizontal well, the gravity action during opening is in an out-of-control state on the tools, when the traditional oil drain device works in a special risk well, a pumping rod 2 needs to be lifted out when the pull rod oil drain device drains oil, well blowout risks exist, the firing pin oil drain device needs to lift out a whole pumping rod pipe column, well killing can be carried out, and no operation time exists; this oil reservoir protector comprises top connection 1, level pressure sliding sleeve 3, locating part, lower clutch 2. The oil reservoir protector adapts to various well conditions, go into preset position as required, through the fixed constant pressure sliding sleeve 3 of constant pressure pin 4, open constant pressure sliding sleeve 3 as required, liquid in the oil pipe is arranged to the oil jacket annular space in, it is clean to keep the well head, the environmental protection, can be directed against different well conditions and well depths, adapt to different ground pressure and oil well structures, install in the oil-well pump upper end, can directly suppress in the tubular column when with the risk operation, open the flowing back valve, implement the kill-job, avoid the risk delay, prevent the blowout, the draining function of normal oil well has simultaneously.
On the other hand, this application embodiment provides an application that oil reservoir protector is applied to oil recovery engineering risk well, and it can keep the well head clean, the environmental protection.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides an oil reservoir protector, its characterized in that, includes top connection, level pressure sliding sleeve and lower clutch, the top connection with vacuole formation after the lower clutch is connected, the level pressure sliding sleeve is located in the cavity, the top connection be provided with be used for with the first draining through-hole of cavity intercommunication, the lower clutch be provided with be used for with the second draining through-hole of cavity intercommunication, the top connection is provided with and is used for making the level pressure sliding sleeve will first draining through-hole with the locating part that the second draining through-hole was plugged up.
2. The reservoir protector of claim 1, wherein a first sealing element for sealing the first oil drainage through hole is installed at one side of the constant pressure sliding sleeve.
3. The reservoir protector of claim 2, wherein the first seal is a sealing rubber ring, and the sealing rubber ring is sleeved on the constant pressure sliding sleeve.
4. The reservoir protector of claim 1, wherein a second sealing element for sealing the second oil drainage through hole is installed at one side of the constant pressure sliding sleeve.
5. The reservoir protector of claim 4, wherein the second seal is a sealing rubber ring, and the sealing rubber ring is sleeved on the constant pressure sliding sleeve.
6. The reservoir protector of claim 1, wherein the limiting member comprises a constant pressure pin, the constant pressure sliding sleeve is provided with a pin hole for matching with the constant pressure pin, and the constant pressure pin penetrates through the upper joint to fix the constant pressure sliding sleeve.
7. The reservoir protector of claim 1, wherein the top sub is cylindrical, the inner wall of one end of the top sub is provided with threads, the bottom sub is cylindrical, the outer wall of one end of the bottom sub is provided with threads, and the top sub is in threaded connection with the bottom sub.
8. The reservoir protector of claim 1, further comprising an oil pipe, wherein the upper sub is threadably connected to the oil pipe.
9. The reservoir protector of claim 1, further comprising an oil pipe, wherein the lower sub is threadably connected to the oil pipe.
10. Use of a pay zone protector according to any of claims 1-9 in an oil extraction engineering risk well.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110860143.XA CN113356793A (en) | 2021-07-28 | 2021-07-28 | Oil layer protector and application of oil layer protector in oil extraction engineering risk well |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110860143.XA CN113356793A (en) | 2021-07-28 | 2021-07-28 | Oil layer protector and application of oil layer protector in oil extraction engineering risk well |
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| CN113356793A true CN113356793A (en) | 2021-09-07 |
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| CN202110860143.XA Pending CN113356793A (en) | 2021-07-28 | 2021-07-28 | Oil layer protector and application of oil layer protector in oil extraction engineering risk well |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115142812A (en) * | 2022-09-02 | 2022-10-04 | 东营华辰石油装备有限公司 | Oil field has promotion formula bleeder that has pressure buffer function |
-
2021
- 2021-07-28 CN CN202110860143.XA patent/CN113356793A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115142812A (en) * | 2022-09-02 | 2022-10-04 | 东营华辰石油装备有限公司 | Oil field has promotion formula bleeder that has pressure buffer function |
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Effective date of registration: 20230314 Address after: No. 63-2-2-11, Taihe Street, Beizhen City, Jinzhou City, Liaoning Province, 121000 Applicant after: Xu Ruixiang Address before: 121000 north of 305guo Road, Tienan Industrial Park, Goubangzi, Beizhen City, Jinzhou City, Liaoning Province Applicant before: Liaoning Guangrun Machinery Co.,Ltd. |
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Application publication date: 20210907 |