CN110905467A - Injection and production dual-purpose tubular column structure - Google Patents

Injection and production dual-purpose tubular column structure Download PDF

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Publication number
CN110905467A
CN110905467A CN201811082266.XA CN201811082266A CN110905467A CN 110905467 A CN110905467 A CN 110905467A CN 201811082266 A CN201811082266 A CN 201811082266A CN 110905467 A CN110905467 A CN 110905467A
Authority
CN
China
Prior art keywords
cylinder
gas injection
sealing
injection hole
sucker rod
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
Application number
CN201811082266.XA
Other languages
Chinese (zh)
Inventor
黄晓东
姚满仓
孟胡
雷德荣
张辉
陈瑞祥
陈璐
迪力夏提·吐尔逊
巴克·海肉拉
龙小梁
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Petrochina Co Ltd
Original Assignee
Petrochina Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Petrochina Co Ltd filed Critical Petrochina Co Ltd
Priority to CN201811082266.XA priority Critical patent/CN110905467A/en
Publication of CN110905467A publication Critical patent/CN110905467A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/16Enhanced recovery methods for obtaining hydrocarbons
    • E21B43/24Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B34/00Valve arrangements for boreholes or wells
    • E21B34/06Valve arrangements for boreholes or wells in wells
    • E21B34/12Valve arrangements for boreholes or wells in wells operated by movement of casings or tubings
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/16Enhanced recovery methods for obtaining hydrocarbons
    • E21B43/24Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
    • E21B43/2406Steam assisted gravity drainage [SAGD]

Abstract

The invention provides an injection-production dual-purpose tubular column structure, which comprises: a tube pump including a housing and a plunger movably disposed in the housing to draw fluid; the gas injection valve comprises a first cylinder and a sealing structure, the first cylinder is detachably arranged on the shell, a first gas injection hole is formed in the first cylinder, the sealing structure is movably arranged in the first cylinder, and the sealing structure is provided with a closing position for shielding the first gas injection hole and an opening position for avoiding the first gas injection hole; first sucker rod wears to establish in first barrel and links to each other with the plunger, and first sucker rod can drive the plunger and remove in the casing, and simultaneously, first sucker rod can drive seal structure and remove between closed position and open position. The technical scheme of the invention effectively solves the problem that the long plunger injection and production dual-purpose pump in the prior art is long in plunger and heavy in weight, so that the transportation is inconvenient.

Description

Injection and production dual-purpose tubular column structure
Technical Field
The invention relates to the field of oilfield exploitation, in particular to an injection and production dual-purpose tubular column structure.
Background
The thick oil resources of Xinjiang and Liaohe are rich, the steam injection and oil pumping operation is needed in the steam huff and puff of the thick oil and the SAGD exploitation process, and the injection and production pump has the advantages of no well killing, steam injection and oil pumping conversion and is widely applied in the field. Research shows that the injection and production pump mainly comprises a long-plunger injection and production dual-purpose pump, a feedback pump and a thermal production rod type pump. These current production pumps have the following problems: (1) when the long-plunger injection-production dual-purpose pump is used for long-stroke production, the problems of long plunger, heavy weight, high processing difficulty, high cost, inconvenience in transportation and failure of rotary pumping caused by scaling of a pump barrel during steam injection exist; (2) the feedback pump adopts a two-stage pump cylinder and a two-stage piston, and the problems of long pump cylinder and plunger, high processing and assembling difficulty, high cost and difficult descending of an inclined shaft section exist when a long stroke is adopted; (3) the thermal recovery rod pump has the problems that whether a tubular column is fixed or not cannot be accurately judged, the rod pump cannot be sealed, and the rod pump cannot be lifted up through the inside of an oil pipe when an internal channel becomes small and a well is repaired due to wax precipitation of the oil pipe.
In order to solve the problems existing in the long-stroke production of the existing on-site injection and production pump, meet the requirements of SAGD on the long-stroke large-discharge injection and production pump and fully exert the technical advantages of the injection and production dual-purpose pump, an SAGD injection and production dual-purpose tubular column structure is designed, and injection and production operations are carried out by utilizing an injection valve and a short plug tubular pump. The structure can realize the functions of oil extraction and steam injection by using the short column plug, shortens the length and the weight of the pump, has the function of scale prevention during steam injection, can reduce the energy consumption and the processing cost of a single well after being successfully used in the field, improves the reliability of the pump, and provides technical support and guarantee for the field thick oil exploitation of the oil field.
Disclosure of Invention
The invention aims to provide a dual-purpose tubular column structure for injection and production, which solves the problem that in the prior art, a long plunger injection and production dual-purpose pump is inconvenient to transport due to long plunger and heavy weight.
In order to achieve the above object, the present invention provides a dual-purpose tubular column structure for injection and production, comprising: a tube pump including a housing and a plunger movably disposed in the housing to draw fluid; the gas injection valve comprises a first cylinder and a sealing structure, the first cylinder is detachably arranged on the shell, a first gas injection hole is formed in the first cylinder, the sealing structure is movably arranged in the first cylinder, and the sealing structure is provided with a closing position for shielding the first gas injection hole and an opening position for avoiding the first gas injection hole; first sucker rod wears to establish in first barrel and links to each other with the plunger, and first sucker rod can drive the plunger and remove in the casing, and simultaneously, first sucker rod can drive seal structure and remove between closed position and open position.
Further, the sealing structure is a sealing cylinder, a second gas injection hole is formed in the sealing cylinder, when the sealing structure is located at the closing position, the first gas injection hole and the second gas injection hole are staggered, and when the sealing structure is located at the opening position, the first gas injection hole and the second gas injection hole correspond to communicate the inner cavity of the sealing cylinder with the outer side of the first cylinder.
Further, when the seal structure is in the open position, the axis of the first gas-injection hole and the axis of the second gas-injection hole coincide.
Further, the axis of the first gas injection hole and the axis of the first cylinder are arranged at an acute angle, and/or the axis of the second gas injection hole and the axis of the first cylinder are arranged at an acute angle.
Furthermore, the first sucker rod is provided with a first driving part and a second driving part, the first driving part protrudes out of the outer surface of the first sucker rod along the radial direction, the first driving part can drive the sealing barrel to move from the closed position to the open position, the second driving part protrudes out of the outer surface of the first sucker rod along the radial direction, and the second driving part can drive the sealing barrel to move from the open position to the closed position.
Further, the distance between the first driving part and the second driving part is greater than the length of the sealing cylinder.
Further, a third gas injection hole is formed in the first driving portion.
Further, be provided with location structure between sealed section of thick bamboo and the first barrel, location structure includes jump ring and jump ring groove, and the jump ring groove sets up on the internal surface of first barrel, and the jump ring setting is on the surface of sealed section of thick bamboo, and when sealed section of thick bamboo was located closed position, the jump ring can stretch into in the jump ring groove.
Further, the outer surface of the sealing cylinder is in contact with the inner surface of the first cylinder, a first sealing ring is arranged on the upstream of the second gas injection hole, and a second sealing ring is arranged on the downstream of the second gas injection hole.
Furthermore, the dual-purpose tubular column structure of notes adopts still includes at least one oil pipe structure, and oil pipe structure includes second barrel and second sucker rod, and second barrel detachably sets up on first barrel, and the second sucker rod is worn to establish in the second barrel and is linked to each other with first sucker rod.
By applying the technical scheme of the invention, the tubular pump and the gas injection valve are arranged in two sections, so that the length of the tubular pump is effectively shortened, the weight of the tubular pump is reduced, and the production cost and the transportation difficulty of the tubular pump are reduced. The first barrel of gas injection valve detachably sets up on the casing, and first sucker rod links to each other and can drive seal structure and plunger removal with the plunger, through the intercommunication and the closure of controlling first sucker rod control gas injection valve, and then makes the dual-purpose tubular column structure of injection-production can realize gas injection and two kinds of functions of oil recovery. And in this application, the first cylinder can be connected between the oil pipe for oil extraction and the shell, so that the use flexibility of the injection-production dual-purpose tubular column structure is improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 shows a schematic half-section view of an embodiment of a dual-purpose injection and production tubing string configuration according to the present invention;
FIG. 2 is a schematic diagram showing a half-section of the gas injection valve of the dual-purpose injection-production tubular column structure of FIG. 1;
FIG. 3 is a schematic view showing a half-section of the gas injection valve of FIG. 2 when gas injection is stopped;
FIG. 4 is a schematic view of a portion of the enlarged structure of FIG. 2 at A;
FIG. 5 is a schematic view of a partial enlarged structure at B of FIG. 3;
FIG. 6 is a schematic diagram showing a half-section of the tubing pump of the dual-purpose injection and production tubing string configuration of FIG. 1; and
fig. 7 shows a schematic half-section of a tube pump according to the prior art.
Wherein the figures include the following reference numerals:
1. a tubing coupling; 2. a first driving section; 3. a third gas injection hole; 4. a first cylinder; 5. a first seal ring; 6. a second gas injection hole; 7. a first gas injection hole; 8. a second seal ring; 9. a sealing cylinder; 10. a clamp spring groove; 11. a clamp spring; 12. a pump upper joint; 13. a second driving section; 14. a first sucker rod; 15. a housing; 16. an oil outlet joint; 17. a floating valve ball; 18. a traveling valve seat; 19. the upper traveling valve compresses the joint; 20. a plunger; 21. a downstream valve assembly; 22. a fixed valve assembly; 23. a pump oil pumping port; 15', a housing; 16', an oil outlet joint; 17', a traveling valve ball; 20', a plunger; 23', a pump oil pumping port; 24', pump injection port.
Detailed Description
The prior art injection-production tubing pump adopts a long plunger injection-production tubing pump as shown in fig. 7, a pump injection port 24 'is directly arranged on a position of a shell 15' corresponding to a plunger 20 ', the upper end of the plunger 20' is connected with a sucker rod through an oil outlet joint 16 ', and when the sucker rod reciprocates, a floating valve ball 17' blocks or avoids a pump pumping port 23 'under the action of liquid pressure difference, so that oil is pumped into the sucker rod through the pump pumping port 23'. During the injection operation, the operator pushes the plunger 20 'down to avoid the pump injection port 24'. The plunger 20' of the injection-production dual-purpose tubular pump in the prior art is long, heavy and difficult to machine, so that the plunger is high in cost, difficult to transport, difficult to run into a well and difficult to operate. The structure of the injection-production dual-purpose tube pump is improved according to the problems.
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the application, its application, or uses. 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 application.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. 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, further discussion thereof is not required in subsequent figures.
As shown in fig. 1 to 6, the dual-purpose tubular column structure for injection and production of the present embodiment includes a tubular pump, an air injection valve, and a first sucker rod 14. Wherein the tube pump comprises a housing 15 and a plunger 20, the plunger 20 being movably arranged in the housing 15 for pumping the fluid. The gas injection valve comprises a first cylinder 4 and a sealing structure, the first cylinder 4 is detachably arranged on the shell 15, a first gas injection hole 7 is formed in the first cylinder 4, and the sealing structure is movably arranged in the first cylinder 4. The seal structure has a closed position that blocks the first gas-injection hole 7 and an open position that avoids the first gas-injection hole 7. The first sucker rod 14 is inserted into the first barrel 4 and connected to the plunger 20 to drive the plunger 20 to move in the housing 15, and at the same time, the first sucker rod 14 can drive the sealing structure to move between the closed position and the open position.
By adopting the technical scheme of the embodiment, the tubular pump and the gas injection valve are arranged in two sections, so that the length of the tubular pump is effectively shortened, the weight of the tubular pump is reduced, and the production cost and the transportation difficulty of the tubular pump are reduced. The first barrel 4 of gas injection valve sets up on casing 15 detachably, and first sucker rod 14 links to each other with plunger 20 and can drive seal structure and plunger 20 removal, and through the intercommunication and the closure of controlling first sucker rod 14 control gas injection valve, and then make the dual-purpose tubular column structure of injection and production can realize gas injection and oil recovery two kinds of functions. And in the embodiment, the first barrel 4 can be connected between an oil pipe for oil production and the shell 15, so that the use flexibility of the dual-purpose injection-production tubular column structure is improved.
It should be noted that, when the dual-purpose injection-production pipe column structure of the present embodiment is used, the right side of fig. 1 to 3 is preferentially drilled closer to the oil layer (i.e., the terrain is relatively low), and the left side is closer to the surface (i.e., the terrain is relatively high). As shown in fig. 1 to 3, the first cylinder 4 of the present embodiment is provided with a tubing coupling 1 at an upper end thereof for connecting with a tubing structure, a pump upper joint 12 at a lower end thereof for connecting with a housing 15, and the housing 15 is threadedly connected with a fixed valve assembly 22 at a lower end thereof. As shown in fig. 6, the plunger 20 is connected with the first sucker rod 14 through the oil outlet connector 16, the traveling valve seat 18, the upstream valve pressing connector 19, the plunger 20, the downstream valve assembly 21 and the fixed valve assembly 22 move along with the reciprocating motion of the first sucker rod 14, the traveling valve ball 17 moves in the traveling valve seat 18 under the action of pressure difference, when the plunger 20 moves downwards (right side in fig. 6), the traveling valve ball 17 floats upwards (left side in fig. 6), and oil can enter the housing 15 through the pump oil pumping port 23; when the plunger 20 moves upwards (left side in fig. 6), the floating valve ball 17 falls downwards (right side in fig. 6), and the oil in the housing 15 can be lifted to a certain height along with the upward movement of the plunger 20, so that the collection of the oil is realized.
As shown in fig. 7, there is a gap between the casing 15 ' and the plunger 20 ' of the tube pump in the prior art, when injecting gas, the casing 15 ' is filled with gas under pressure, and oil, impurities and other substances remaining in the oil pipe may enter the gap under the action of air pressure, which will form dirt in the tube pump over time, damage the structure of the tube pump, and affect the service life and the oil and gas injection effects.
As shown in fig. 1 to 5, the outer surface of the seal cylinder 9 of the present embodiment is in contact with the inner surface of the first cylinder 4, the first seal ring 5 is provided upstream of the second gas-injection hole 6, and the second seal ring 8 is provided downstream of the second gas-injection hole 6. First sealing washer 5 and second sealing washer 8 set up respectively in the upper and lower reaches of second gas injection hole 6 and with first barrel 4 interference fit, seal the gap between sealed section of thick bamboo 9 and the first barrel 4, avoid hot steam to pour into the in-process and flow at the internal surface of first barrel 4 and casing 15 and become the dirt, guaranteed gas injection valve's life and gas injection effect. Preferably, the first seal ring 5 and the second seal ring 8 are made of a high temperature resistant material.
As shown in fig. 2 and 3, the sealing structure of the present embodiment is a sealing cylinder 9, the sealing cylinder 9 is provided with a second gas injection hole 6, when the sealing structure is located at the closed position, the first gas injection hole 7 and the second gas injection hole 6 are dislocated, and gas cannot be injected into an oil layer through the first gas injection hole 7 and the second gas injection hole 6, so as to achieve sealing; when the seal structure is located at the open position, the first gas injection hole 7 and the second gas injection hole 6 correspond to communicate the inner cavity of the seal cylinder 9 with the outside of the first cylinder 4 so that gas can be injected into the oil layer through the first gas injection hole 7 and the second gas injection hole 6.
Preferably, as shown in fig. 2, when the sealing cylinder 9 is in the open position, the axis of the first gas-injection hole 7 and the axis of the second gas-injection hole 6 coincide. Further preferably, as shown in fig. 2, the axes of the first gas-injection hole 7 and the second gas-injection hole 6 are disposed at an acute angle to the axis of the first cylinder 4 in the present embodiment. So that the gas changes direction less when injected into the oil layer through the first gas injection hole 7 and the second gas injection hole 6.
As shown in fig. 2 and 3, the first sucker rod 14 of the present embodiment is provided with a first driving part 2 and a second driving part 13, and the first driving part 2 and the second driving part 13 protrude from the outer surface of the first sucker rod 14 in the radial direction. When the first sucker rod 14 moves from the position of fig. 3 to the position of fig. 2, the first driving portion 2 can abut on the upper end of the seal cylinder 9 to drive the seal cylinder 9 to move from the closed position to the open position. When the first sucker rod 14 moves from the position of fig. 2 to the position of fig. 3, the second driving portion 13 can abut against the lower end of the seal cylinder 9 to drive the seal cylinder 9 to move from the open position to the closed position.
The first driving portion 2 may drive the seal cylinder 9 to move to the open position by gravity, or may drive the seal cylinder 9 to move to the open position by an additional pushing force. When the seal cartridge 9 is in the open position, the seal cartridge 9 can be positioned in abutment with the step surface of the pump upper joint 12.
Preferably, as shown in fig. 2 and 3, the distance between the first driving part 2 and the second driving part 13 of the present embodiment is greater than the length of the sealing cylinder 9, so that the sealing cylinder 9 is not driven to reciprocate all the time when the dual-purpose injection and production string structure of the present embodiment performs the oil production operation. In the present embodiment, the first driving portion 2 is further provided with a third gas injection hole 3, and as shown in fig. 1, when the seal cylinder 9 is in the open position, gas can be injected into the oil layer through the third gas injection hole 3, the second gas injection hole 6, and the first gas injection hole 7 in this order.
As shown in fig. 4 and 5, a positioning structure is disposed between the sealing cylinder 9 and the first cylinder 4, the positioning structure includes a clamp spring 11 and a clamp spring groove 10, the clamp spring groove 10 is disposed on the inner surface of the first cylinder 4, and the clamp spring 11 is disposed on the outer surface of the sealing cylinder 9. When the sealing cylinder is in the open position, as shown in fig. 4, the clamp spring 11 retracts and abuts against the inner wall of the first cylinder 4; when the sealing cylinder 9 is in the closed position, as shown in fig. 5, the snap spring 11 can extend into the snap spring groove 10, so that the first cylinder 4 is kept complete, which is beneficial to oil extraction operation.
The dual-purpose tubular column structure of notes production of this embodiment can also include at least one oil pipe structure, and oil pipe structure includes second barrel and second sucker rod, and second barrel detachably sets up on first barrel 4, and the second sucker rod is worn to establish in the second barrel and is linked to each other with first sucker rod 14. The oil pipe structure prolongs the length of the injection and production dual-purpose pipe column structure, and increases the downhole depth of the tubular pump.
The dual-purpose tubular column structure of injection and production of this embodiment's use can solve the processing degree of difficulty that present long stroke injection and production dual-purpose pump plunger overlength leads to big, problem with high costs, can reduce single well energy consumption simultaneously, at the gas injection in-process scale control, improve the reliability of pump, can realize utilizing ordinary tubular pump to carry out the purpose of injection and production operation in addition, reduces the production operation expense, offers convenience for oil field on-the-spot viscous crude exploitation.
From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:
the tubular pump and the gas injection valve are arranged in two sections, so that the length of the tubular pump is effectively shortened, the weight of the tubular pump is reduced, and the production cost and the transportation difficulty of the tubular pump are reduced. The first barrel of gas injection valve detachably sets up on the casing, and first sucker rod links to each other and can drive seal structure and plunger removal with the plunger, through the intercommunication and the closure of controlling first sucker rod control gas injection valve, and then makes the dual-purpose tubular column structure of injection-production can realize gas injection and two kinds of functions of oil recovery. And in this embodiment, the first cylinder can be connected between the oil pipe for oil extraction and the shell, so that the use flexibility of the injection-production dual-purpose tubular column structure is improved.
In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise oriented (rotated 80 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of protection of the present application is not to be construed as being limited.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by 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 (9)

1. A dual-purpose tubular column structure of notes adopts which characterized in that includes:
a tube pump comprising a housing (15) and a plunger (20), the plunger (20) being movably arranged in the housing (15) to aspirate a fluid;
the gas injection valve comprises a first cylinder (4) and a sealing structure, the first cylinder (4) is detachably arranged on the shell (15), a first gas injection hole (7) is formed in the first cylinder (4), the sealing structure is movably arranged in the first cylinder (4), and the sealing structure has a closing position for shielding the first gas injection hole (7) and an opening position for avoiding the first gas injection hole (7);
a first sucker rod (14) arranged in the first cylinder (4) in a penetrating way and connected with the plunger (20), wherein the first sucker rod (14) can drive the plunger (20) to move in the shell (15), and meanwhile, the first sucker rod (14) can drive the sealing structure to move between the closing position and the opening position;
the sealing structure is a sealing barrel (9), a second gas injection hole (6) is formed in the sealing barrel (9), when the sealing structure is located at the closing position, the first gas injection hole (7) and the second gas injection hole (6) are staggered, and when the sealing structure is located at the opening position, the first gas injection hole (7) and the second gas injection hole (6) correspond to communicate the inner cavity of the sealing barrel (9) with the outer side of the first barrel body (4).
2. The dual injection and production tubing string structure according to claim 1, wherein an axis of the first gas injection hole (7) and an axis of the second gas injection hole (6) coincide when the seal structure is located at the open position.
3. The dual purpose injection and production tubing string structure according to claim 2, wherein the axis of the first gas injection hole (7) is disposed at an acute angle to the axis of the first cylinder (4), and/or the axis of the second gas injection hole (6) is disposed at an acute angle to the axis of the first cylinder (4).
4. The dual string structure according to claim 1, wherein the first sucker rod (14) is provided with a first driving part (2) and a second driving part (13), the first driving part (2) protrudes radially from the outer surface of the first sucker rod (14), the first driving part (2) can drive the sealing cylinder (9) to move from the closed position to the open position, the second driving part (13) protrudes radially from the outer surface of the first sucker rod (14), and the second driving part (13) can drive the sealing cylinder (9) to move from the open position to the closed position.
5. The dual-purpose tubular string structure for injection and production according to claim 4, wherein a distance between the first driving portion (2) and the second driving portion (13) is greater than a length of the sealing cylinder (9).
6. The dual-purpose tubular column structure for injection and production according to claim 4, characterized in that the first driving portion (2) is provided with a third gas injection hole (3).
7. The dual-purpose tubular column structure for injection and production according to claim 1, characterized in that a positioning structure is arranged between the sealing cylinder (9) and the first cylinder (4), the positioning structure comprises a clamp spring (11) and a clamp spring groove (10), the clamp spring groove (10) is arranged on the inner surface of the first cylinder (4), the clamp spring (11) is arranged on the outer surface of the sealing cylinder (9), and when the sealing cylinder (9) is located at the closed position, the clamp spring (11) can extend into the clamp spring groove (10).
8. The column structure for both injection and production according to claim 1, wherein the outer surface of the seal cylinder (9) is in contact with the inner surface of the first cylinder (4), and a first seal ring (5) is provided upstream of the second gas injection hole (6), and a second seal ring (8) is provided downstream of the second gas injection hole (6).
9. The dual-purpose tubular column structure for injection and production according to claim 1, further comprising at least one oil tube structure, wherein the oil tube structure comprises a second cylinder and a second sucker rod, the second cylinder is detachably disposed on the first cylinder (4), and the second sucker rod is inserted into the second cylinder and connected to the first sucker rod (14).
CN201811082266.XA 2018-09-17 2018-09-17 Injection and production dual-purpose tubular column structure Pending CN110905467A (en)

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Application Number Priority Date Filing Date Title
CN201811082266.XA CN110905467A (en) 2018-09-17 2018-09-17 Injection and production dual-purpose tubular column structure

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Application Number Priority Date Filing Date Title
CN201811082266.XA CN110905467A (en) 2018-09-17 2018-09-17 Injection and production dual-purpose tubular column structure

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN87213340U (en) * 1987-09-15 1988-12-14 新疆石油管理局油田工艺研究所 Pump both for injecting gas and extracting oil
CN2119519U (en) * 1992-05-27 1992-10-21 辽河石油勘探局钻采工艺研究院 Steam injection column oil pump
CN2157333Y (en) * 1993-02-18 1994-02-23 新疆石油管理局重油开发公司 Oil injection stopping-up removing pump
CN2547904Y (en) * 2002-03-29 2003-04-30 国营三八八厂 Deep-extracting oil-well pump
RU2361115C1 (en) * 2008-03-31 2009-07-10 Открытое акционерное общество "Татнефть" им. В.Д. Шашина Bottomhole pump set for product lifting along well flow string
CN207332777U (en) * 2017-06-12 2018-05-08 中国石油天然气股份有限公司 Injection-production column jacket

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN87213340U (en) * 1987-09-15 1988-12-14 新疆石油管理局油田工艺研究所 Pump both for injecting gas and extracting oil
CN2119519U (en) * 1992-05-27 1992-10-21 辽河石油勘探局钻采工艺研究院 Steam injection column oil pump
CN2157333Y (en) * 1993-02-18 1994-02-23 新疆石油管理局重油开发公司 Oil injection stopping-up removing pump
CN2547904Y (en) * 2002-03-29 2003-04-30 国营三八八厂 Deep-extracting oil-well pump
RU2361115C1 (en) * 2008-03-31 2009-07-10 Открытое акционерное общество "Татнефть" им. В.Д. Шашина Bottomhole pump set for product lifting along well flow string
CN207332777U (en) * 2017-06-12 2018-05-08 中国石油天然气股份有限公司 Injection-production column jacket

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