CN211648081U - Adjustable directional sliding sleeve and oil production pipe column - Google Patents
Adjustable directional sliding sleeve and oil production pipe column Download PDFInfo
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- CN211648081U CN211648081U CN201922289091.6U CN201922289091U CN211648081U CN 211648081 U CN211648081 U CN 211648081U CN 201922289091 U CN201922289091 U CN 201922289091U CN 211648081 U CN211648081 U CN 211648081U
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Abstract
The utility model relates to an adjustable directional sliding sleeve and oil production pipe column, which comprises a sliding sleeve body, a sealing block and an adjusting rod, wherein the sliding sleeve body and the sealing block are both of tubular structures arranged along the vertical direction, the sealing block is arranged in the sliding sleeve body, the outer wall of the sealing block is tightly attached to the inner wall of the sliding sleeve body, and a shearing pin is connected between the sealing block and the sliding sleeve body; be provided with the internal thread on the inner wall of sealing block, be provided with the external screw thread on the lower part outer wall of adjusting the pole, the bottom of adjusting the pole be located the sealing block and with the inner wall threaded connection of sealing block, the top of adjusting the pole can stretch into the inside of oil-well pump and with the bottom butt that is located the valve ball of oil-well pump. The utility model provides a directional sliding sleeve exists that the structure is complicated, the inconvenient technical problem of installation under the pump.
Description
Technical Field
The utility model relates to an oil recovery technical field, it is further, relate to a take pump-down instrument, especially relate to a directional sliding sleeve and oil production pipe column with adjustable.
Background
In the process of exploiting petroleum, when a conventional oil well is pressed down to a pump, a directional sliding sleeve needs to be installed under the pump so as to achieve the purpose of sealing a pipe column, but the existing directional sliding sleeve under the pump has the defects of complex structure and inconvenient installation, and in order to achieve the sealing of an oil well pump, the connection relationship between the directional sliding sleeve and the oil well pump needs to be adjusted repeatedly for many times, so that the production timeliness is influenced.
Aiming at the problems of complex structure and inconvenient installation of the directional sliding sleeve under the pump in the related technology, an effective solution is not provided at present.
Therefore, the inventor provides an adjustable directional sliding sleeve and an oil production pipe column by virtue of experience and practice of related industries for many years, so as to overcome the defects in the prior art.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a directional sliding sleeve and oil production pipe post with adjustable before going into the oil-well pump down, through the overhanging length of adjustment pole, can accomplish the sealing to the oil-well pump and transfer the tubular column, satisfy the construction demand of taking the area to push down the pump, simple structure, the installation, adjust the convenience, improve the life inefficacy.
The purpose of the utility model can be realized by adopting the following technical scheme:
the utility model provides a directional sliding sleeve with adjustable sets up in the below of oil-well pump, and follows in the oil-well pump goes into the well down, directional sliding sleeve with adjustable includes sliding sleeve body, sealed piece and regulation pole, wherein:
the sliding sleeve body and the sealing block are both of cylindrical structures arranged along the vertical direction, the sealing block is arranged in the sliding sleeve body, the outer wall of the sealing block is tightly attached to the inner wall of the sliding sleeve body, and a shearing pin is connected between the sealing block and the sliding sleeve body;
the inner wall of the sealing block is provided with an internal thread, the outer wall of the lower part of the adjusting rod is provided with an external thread matched with the internal thread, the bottom of the adjusting rod is positioned in the sealing block and is in threaded connection with the inner wall of the sealing block, and the top of the adjusting rod can stretch into the oil well pump and is abutted against the bottom of a valve ball in the oil well pump.
The utility model discloses an in a preferred embodiment, the below of adjusting the pole is provided with the plug, the plug set up in the inside of sealed piece and with the inner wall threaded connection of sealed piece.
In a preferred embodiment of the present invention, the outer sleeve of the sealing block is provided with a sealing ring, and the sealing ring is compressed between the outer wall of the sealing block and the inner wall of the sliding sleeve body.
The utility model discloses an in a preferred embodiment, the inside of sliding sleeve body is the ladder hole column structure that the internal diameter from top to bottom increases in proper order, the top outer fringe of sealed piece with step butt on the inner wall of sliding sleeve body is located sealed piece below the internal diameter of sliding sleeve body is greater than sealed piece's internal diameter.
In a preferred embodiment of the present invention, one end of the shear pin is connected to the side wall of the sliding sleeve body, and the other end of the shear pin is inserted into the outer wall of the sealing block.
The utility model discloses an in a preferred embodiment, directional sliding sleeve with adjustable still includes top connection and lower clutch, top connection and lower clutch are the tubular structure that sets up along vertical direction, the bottom of top connection with the top of sliding sleeve body is connected, the top of top connection with the pump barrel of oil-well pump is connected, the top of lower clutch with the bottom of sliding sleeve body is connected, the bottom and the oil pipe of lower clutch are connected.
The present invention provides a portable fluid pump, which is characterized in that the outer wall of the upper joint and the outer wall of the lower joint are provided with external threads, the upper joint is connected with the pump barrel in a threaded manner, and the lower joint is connected with the oil pipe in a threaded manner.
In a preferred embodiment of the present invention, the sliding sleeve body and the upper joint and the lower joint are integrally formed.
The utility model provides an oil production pipe, oil production pipe includes oil pipe, oil-well pump and foretell adjustable directional sliding sleeve, wherein:
the oil well pump and the adjustable directional sliding sleeve are both connected to the oil pipe, and the adjustable directional sliding sleeve is positioned at the bottom of the oil well pump;
the oil well pump comprises a pump cylinder, a valve seat, a sealing seat and a valve ball, wherein the pump cylinder is of a cylindrical structure arranged along the vertical direction, the valve seat and the sealing seat are respectively arranged at the bottom end and the top end in the pump cylinder, and the valve ball can be movably arranged between the valve seat and the sealing seat;
the top end of the adjustable directional sliding sleeve is connected with the bottom end of the oil well pump, the top end of an adjusting rod on the adjustable directional sliding sleeve penetrates through the valve seat from the bottom of the oil well pump and is abutted against the bottom of the valve ball, the top of the valve ball is abutted against the bottom of the sealing seat, and the bottom of the valve ball is separated from the valve seat.
The utility model discloses an in a preferred embodiment, the valve seat with the seal receptacle is followed the annular boss structure that the circumference of pump barrel set up, the outer wall of valve seat with the bottom wall connection of pump barrel, the outer wall of seal receptacle with the top wall connection of pump barrel.
The utility model discloses an in a preferred embodiment, oil pipe is including being located the upper portion oil pipe of oil-well pump top with be located the lower part oil pipe of adjustable directional sliding sleeve below, upper portion oil pipe's bottom with the top of pump barrel is connected, the bottom of adjustable directional sliding sleeve with lower part oil pipe's top is connected.
From the above, the utility model discloses a directional sliding sleeve and oil production pipe's characteristics and advantage with adjustable are: it carries out the sealing block of shutoff to the inside of sliding sleeve body to be fixed with through the shearing pin in the sliding sleeve body, sealing block internal thread connection has the regulation pole, before going into the oil-well sucker pump down, adjust the hookup location of regulation pole on the sealing block, thereby make the top of adjusting the pole can with the bottom butt of valve ball, the top of valve ball and the seal receptacle butt in the pump barrel, accomplish the sealed to the oil-well pump, can satisfy the demand of taking the pump down operation, moreover, the steam generator is simple in structure, the installation, it is convenient to adjust, only need once adjust the regulation pole and can guarantee the good sealed effect to the oil-well pump, the production ageing is greatly improved.
Drawings
The drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention. Wherein:
FIG. 1: do the utility model discloses the structure sketch map of directional sliding sleeve with adjustable.
FIG. 2: is the structure schematic diagram of the oil production pipe of the utility model.
The utility model discloses an attached numeral does:
1. a sliding sleeve body; 101. An upper joint;
102. a lower joint; 2. A sealing block;
3. adjusting a rod; 4. Shearing the pin;
5. a seal ring; 6. Plugging with a thread;
10. an oil well pump; 1001. A Versailles ball;
1002. a valve seat; 1003. A sealing seat;
1004. a pump barrel; 20. An oil pipe;
2001. an upper oil pipe; 2002. A lower oil pipe.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings.
Example one
As shown in fig. 1, the utility model provides an adjustable directional sliding sleeve, this adjustable directional sliding sleeve sets up in the below of oil-well pump 10 to along with the oil-well pump 10 is gone into in the well. This directional sliding sleeve with adjustable includes sliding sleeve body 1, sealed piece 2 and regulation pole 3, wherein: the sliding sleeve body 1 and the sealing block 2 are both cylindrical structures arranged along the vertical direction, the sealing block 2 is arranged in the sliding sleeve body 1, the outer wall of the sealing block 2 is tightly attached to the inner wall of the sliding sleeve body 1, and a shearing pin 4 is connected between the sealing block 2 and the sliding sleeve body 1; be provided with the internal thread on the inner wall of seal block 2, be provided with on the lower part outer wall of adjusting pole 3 with the internal thread matched with external screw thread on the seal block 2, the bottom of adjusting pole 3 is located seal block 2 and with the inner wall threaded connection of seal block 2, the top of adjusting pole 3 can stretch into the inside of oil-well pump 10 and with the bottom butt that is located the valve ball 1001 of oil-well pump 10, so that the top of valve ball 1001 and the seal receptacle 1003 butt in the pump barrel 1004, cooperate the completion through valve ball 1001 and seal receptacle 1003 to the sealed of oil-well pump 10.
The utility model discloses be fixed with through shearing pin 4 in sliding sleeve body 1 and carry out the sealed piece 2 of shutoff to the inside of sliding sleeve body 1, 2 female connection in sealed piece have the regulation pole 3, before going into oil-well pump 10 in to the well, adjust the threaded connection position of regulation pole 3 on sealed piece 2, thereby make the top of adjusting pole 3 can with the bottom butt of valve ball 1001, the top and the seal receptacle 1003 butt of valve ball 1001, accomplish the sealing to oil-well pump 10, can satisfy the demand of taking the pump operation down, moreover, the steam generator is simple in structure, the installation, it is convenient to adjust, only need adjust the regulation pole 3 once and can guarantee the good sealed effect to oil-well pump 10, the production ageing is greatly improved.
Specifically, as shown in fig. 1, one end of the shear pin 4 is connected to the side wall of the sliding sleeve body 1, and the other end of the shear pin 4 is inserted into the outer wall of the sealing block 2.
Further, the number of shear pins 4 is a plurality of, and each shear pin 4 evenly arranges along the circumference of sliding sleeve body 1.
In an optional embodiment of the utility model, as shown in fig. 1, the below of adjusting pole 3 is provided with plug 6, plug 6 sets up in the inside of seal block 2 and with the inner wall threaded connection of seal block 2, the top of plug 6 and the bottom of adjusting pole 3 can contact, also can the phase separation, plug 6 plays shutoff, sealed effect to seal block 2, and then guarantees good sealed effect between valve ball 1001 and seal seat 1003.
In an optional embodiment of the present invention, as shown in fig. 1, the outer fixing sleeve of the sealing block 2 is provided with a sealing ring 5, the sealing ring 5 is compressed between the outer wall of the sealing block 2 and the inner wall of the sliding sleeve body 1, so as to ensure a good sealing relationship between the sealing block 2 and the sliding sleeve body 1.
Further, the sealing ring 5 may be made of, but not limited to, rubber.
In an optional embodiment of the present invention, as shown in fig. 1, the inside of the sliding sleeve body 1 is a stepped hole structure with an inner diameter gradually increasing from top to bottom, the top outer edge of the sealing block 2 abuts against the step on the inner wall of the sliding sleeve body 1, and the inner diameter of the sliding sleeve body 1 below the sealing block 2 is greater than the inner diameter of the sealing block 2. Can play spacing, fixed effect to sealed piece 2 through the step on the sliding sleeve body 1 inner wall, prevent that sealed piece 2 from shifting up, guarantee to adjust the position of pole 3 unchangeably, avoid adjusting the position of pole 3 repeatedly. In addition, after the shear pin 4 is cut off, the sealing block 2 can fall to the bottom of the sliding sleeve body 1 and the oil pipe 20, so that the conduction of an oil pumping pipe column is realized, and the normal operation of oil pumping operation is ensured.
In an optional embodiment of the utility model, as shown in fig. 1, the adjustable directional sliding sleeve further comprises an upper joint 101 and a lower joint 102, the upper joint 101 and the lower joint 102 are both cylindrical structures arranged along the vertical direction, the bottom end of the upper joint 101 is connected with the top end of the sliding sleeve body 1, the top end of the upper joint 101 is connected with the bottom end of the pump barrel 1004 of the oil well pump 10, the top end of the lower joint 102 is connected with the bottom end of the sliding sleeve body 1, the bottom end of the lower joint 102 is connected with the oil pipe 20, and the installation and connection of the sliding sleeve body 1 are facilitated through the arrangement of the upper joint 101 and the lower joint 102.
Further, the outer wall of the upper joint 101 and the outer wall of the lower joint 102 are both provided with external threads, the upper joint 101 is in threaded connection with the pump cylinder 1004, and the lower joint 102 is in threaded connection with the oil pipe 20.
Further, but not limited to, the sliding sleeve body 1 and the upper joint 101 may be integrally formed, and the sliding sleeve body 1 and the lower joint 102 may be integrally formed.
The utility model discloses a directional sliding sleeve's characteristics and advantage with adjustable are:
the adjustable directional sliding sleeve is simple in structure and convenient to install and adjust, good sealing effect on the oil well pump 10 can be guaranteed only by adjusting the adjusting rod 3 once, the purpose of pressing a pump under the belt can be achieved through field application, and production timeliness is greatly improved.
Second, this directional sliding sleeve with adjustable the inside of sliding sleeve body 1 is the shoulder hole column structure that from top to bottom internal diameter increases in proper order, and the internal diameter that is located sliding sleeve body 1 of sealed piece 2 below is greater than the internal diameter of sealed piece 2, under sealed piece 2 fixed state, can play spacing, fixed effect to sealed piece 2, will cut off pin 4 the back, can guarantee again to pump switching on of tubular column to ensure the normal clear of pumping operation.
And thirdly, the top end and the bottom end of the sliding sleeve body 1 in the adjustable directional sliding sleeve are respectively connected with an upper joint 101 and a lower joint 102, so that the sliding sleeve body 1 can be conveniently connected with oil-well pumps 10 of various pump types and various oil pipes 20, and the adjustable directional sliding sleeve is wide in application range and can be repeatedly used.
Example two
As shown in fig. 2, the utility model provides an oil production pipe, this oil production pipe include oil pipe 20, oil-well pump 10 and foretell adjustable directional sliding sleeve, and oil-well pump 10 and adjustable directional sliding sleeve are all connected on oil pipe 20, and adjustable directional sliding sleeve is located the bottom of oil-well pump 10. The oil well pump 10 comprises a pump barrel 1004, a valve seat 1002, a seal seat 1003 and a valve ball 1001, the pump barrel 1004 is of a cylindrical structure arranged in the vertical direction, the valve seat 1002 is arranged at the bottom end of the pump barrel 1004, the seal seat 1003 is arranged at the top end of the pump barrel 1004, and the distance between the top end of the valve seat 1002 and the bottom end of the seal seat 1003 is larger than the diameter of the valve ball 1001, so that the valve ball 1001 can be movably arranged between the valve seat 1002 and the seal seat 1003. The top end of the adjustable directional sliding sleeve is connected with the bottom end of the oil well pump 10, the top end of the adjusting rod 3 on the adjustable directional sliding sleeve penetrates through the valve seat 1002 from the bottom of the oil well pump 10 and is abutted against the bottom of the valve ball 1001, the top of the valve ball 1001 is abutted against the bottom of the sealing seat 1003, the bottom of the valve ball 1001 is separated from the valve seat 1002, and the valve ball 1001 is matched with the sealing seat 1003 to seal the inside of the pump barrel 1004.
Further, as shown in fig. 2, the valve seat 1002 and the seal seat 1003 are both circular boss structures arranged along the circumferential direction of the pump barrel 1004, the outer wall of the valve seat 1002 is connected with the inner wall of the bottom end of the pump barrel 1004, and the outer wall of the seal seat 1003 is connected with the inner wall of the top end of the pump barrel 1004.
Further, as shown in fig. 2, the oil pipe 20 includes an upper oil pipe 2001 above the oil pump 10 and a lower oil pipe (i.e., tail pipe) 2002 below the adjustable directional sliding sleeve, wherein the lower end of the upper oil pipe 2001 is connected with the top end of the pump barrel 1004, and the lower end of the adjustable directional sliding sleeve is connected with the top end of the lower oil pipe 2002.
The utility model discloses the theory of operation of oil production pipe does: before the oil well pump 10 is put into the well, the adjustable directional sliding sleeve is arranged at the bottom of the oil well pump 10, the plug 6 is taken out from the bottom of the sealing block 2, the threaded connection position of the adjusting rod 3 on the sealing block 2 in the adjustable directional sliding sleeve is adjusted from the lower part of the sealing block 2, the top end of the adjusting rod 3 can be abutted against the bottom of the valve ball 1001, the top of the valve ball 1001 is abutted against the inner edge of the bottom of the sealing seat 1003, the valve ball 1001 is matched with the sealing seat 1003 to complete the sealing of the oil well pump 10 and the upper oil pipe 2001, the plug 6 can be arranged in the sealing block 2 to plug the sealing block 2, then the top end of the adjustable directional sliding sleeve is connected with the bottom end of the oil well pump 10, the bottom end of the adjustable directional sliding sleeve is connected with the lower oil pipe 2002, and the connection of the adjustable directional sliding. After the adjustable directional sliding sleeve is lowered to a preset position in a well along with an oil well pump 10, the adjustable directional sliding sleeve presses the upper oil pipe 2001 from the ground, the pressure in the upper oil pipe 2001 sequentially acts on the shearing pin 4 through the valve ball 1001, the adjusting rod 3 and the sealing block 2, when the pressure reaches about 10MPa, the shearing pin 4 is cut off, the sealing block 2 and the adjusting rod 3 fall into the lower oil pipe 2002 together under the action of the pressure, the sealing block and the adjusting rod 3 are intercepted by a plug in the lower oil pipe 2002 and are retained in the lower oil pipe 2002, the valve ball 1001 falls back onto the valve seat 1002, the upper oil pipe 2001, the oil well pump 10 and the lower oil pipe 2002 are conducted, and the oil production pipe column can perform normal oil production operation.
The utility model discloses oil production pipe's characteristics and advantage are:
the adjustable directional sliding sleeve is arranged at the bottom of the oil well pump 10 in the oil production string, so that the connection and the installation are convenient, the sealing of the oil pumping string can be realized, the conditions of oil inlet and liquid inlet cannot occur in the upper oil pipe 2001 in the process of pressing the pump under the belt condition, the operation requirement of the pressing pump under the belt condition is met, and the production timeliness is greatly improved.
The above description is only exemplary of the present invention, and is not intended to limit the scope of the present invention. Any person skilled in the art should also realize that such equivalent changes and modifications can be made without departing from the spirit and principles of the present invention.
Claims (11)
1. The utility model provides a directional sliding sleeve with adjustable sets up in the below of oil-well pump (10) to follow in oil-well pump (10) goes into the well, its characterized in that, directional sliding sleeve with adjustable includes sliding sleeve body (1), sealing block (2) and adjusts pole (3), wherein:
the sliding sleeve body (1) and the sealing block (2) are both of cylindrical structures arranged along the vertical direction, the sealing block (2) is arranged in the sliding sleeve body (1), the outer wall of the sealing block (2) is tightly attached to the inner wall of the sliding sleeve body (1), and a shearing pin (4) is connected between the sealing block (2) and the sliding sleeve body (1);
be provided with the internal thread on the inner wall of sealed piece (2), be provided with on the lower part outer wall of adjusting pole (3) with internal thread matched with external screw thread, the bottom of adjusting pole (3) is located in sealed piece (2) and with the inner wall threaded connection of sealed piece (2), the top of adjusting pole (3) can stretch into to the inside of oil-well pump (10) and with be located the bottom butt of valve ball (1001) in oil-well pump (10).
2. The adjustable directional sliding sleeve as claimed in claim 1, wherein a plug (6) is arranged below the adjusting rod (3), and the plug (6) is arranged inside the sealing block (2) and is in threaded connection with the inner wall of the sealing block (2).
3. The adjustable directional sliding sleeve as claimed in claim 1, wherein a sealing ring (5) is sleeved on the outer side of the sealing block (2), and the sealing ring (5) is compressed between the outer wall of the sealing block (2) and the inner wall of the sliding sleeve body (1).
4. The adjustable directional sliding sleeve as claimed in claim 1, wherein the interior of the sliding sleeve body (1) is a stepped hole structure with sequentially increasing inner diameters from top to bottom, the top outer edge of the sealing block (2) abuts against the step on the inner wall of the sliding sleeve body (1), and the inner diameter of the sliding sleeve body (1) below the sealing block (2) is greater than the inner diameter of the sealing block (2).
5. The adjustable directional sliding sleeve as claimed in claim 1, wherein one end of the shear pin (4) is connected to the side wall of the sliding sleeve body (1), and the other end of the shear pin (4) is inserted into the outer wall of the sealing block (2).
6. The adjustable directional sliding sleeve according to claim 1, further comprising an upper joint (101) and a lower joint (102), wherein the upper joint (101) and the lower joint (102) are both vertically arranged cylindrical structures, the bottom end of the upper joint (101) is connected with the top end of the sliding sleeve body (1), the top end of the upper joint (101) is connected with a pump cylinder (1004) of the oil well pump (10), the top end of the lower joint (102) is connected with the bottom end of the sliding sleeve body (1), and the bottom end of the lower joint (102) is connected with the oil pipe (20).
7. The adjustable directional sliding sleeve as set forth in claim 6, wherein external threads are provided on the outer wall of the upper joint (101) and the outer wall of the lower joint (102), the upper joint (101) is in threaded connection with the pump barrel (1004), and the lower joint (102) is in threaded connection with the oil pipe (20).
8. The adjustable directional sliding sleeve as claimed in claim 6, wherein the sliding sleeve body (1) and the upper joint (101) and the lower joint (102) are integrally formed.
9. A production string, characterized in that it comprises a tubing (20), an oil pump (10) and an adjustable directional sliding sleeve according to any one of claims 1 to 8, wherein:
the oil well pump (10) and the adjustable directional sliding sleeve are both connected to the oil pipe (20), and the adjustable directional sliding sleeve is positioned at the bottom of the oil well pump (10);
the oil well pump (10) comprises a pump barrel (1004), a valve seat (1002), a sealing seat (1003) and a valve ball (1001), the pump barrel (1004) is of a cylindrical structure arranged along the vertical direction, the valve seat (1002) and the sealing seat (1003) are respectively arranged at the bottom end and the top end in the pump barrel (1004), and the valve ball (1001) can be movably arranged between the valve seat (1002) and the sealing seat (1003);
the top end of the adjustable directional sliding sleeve is connected with the bottom end of the oil well pump (10), the top end of an adjusting rod (3) on the adjustable directional sliding sleeve penetrates through the valve seat (1002) from the bottom of the oil well pump (10) and is abutted against the bottom of the valve ball (1001), the top of the valve ball (1001) is abutted against the bottom of the sealing seat (1003), and the bottom of the valve ball (1001) is separated from the valve seat (1002).
10. The production string according to claim 9, wherein the valve seat (1002) and the seal seat (1003) are both annular boss structures arranged along the circumferential direction of the pump barrel (1004), the outer wall of the valve seat (1002) is connected with the inner wall of the bottom end of the pump barrel (1004), and the outer wall of the seal seat (1003) is connected with the inner wall of the top end of the pump barrel (1004).
11. The production string according to claim 9, characterized in that the tubing (20) comprises an upper tubing (2001) above the pump (10) and a lower tubing (2002) below the adjustable directional sliding sleeve, the lower end of the upper tubing (2001) being connected to the top end of the pump barrel (1004) and the lower end of the adjustable directional sliding sleeve being connected to the top end of the lower tubing (2002).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922289091.6U CN211648081U (en) | 2019-12-18 | 2019-12-18 | Adjustable directional sliding sleeve and oil production pipe column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922289091.6U CN211648081U (en) | 2019-12-18 | 2019-12-18 | Adjustable directional sliding sleeve and oil production pipe column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211648081U true CN211648081U (en) | 2020-10-09 |
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ID=72697075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922289091.6U Active CN211648081U (en) | 2019-12-18 | 2019-12-18 | Adjustable directional sliding sleeve and oil production pipe column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211648081U (en) |
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2019
- 2019-12-18 CN CN201922289091.6U patent/CN211648081U/en active Active
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