CN221032556U - Adjustable gun tail of accurate perforation - Google Patents
Adjustable gun tail of accurate perforation Download PDFInfo
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- CN221032556U CN221032556U CN202323183365.6U CN202323183365U CN221032556U CN 221032556 U CN221032556 U CN 221032556U CN 202323183365 U CN202323183365 U CN 202323183365U CN 221032556 U CN221032556 U CN 221032556U
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- adjusting
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- 238000003825 pressing Methods 0.000 claims abstract description 4
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- 238000000034 method Methods 0.000 description 5
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- 238000010586 diagram Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000003129 oil well Substances 0.000 description 3
- 239000010779 crude oil Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- 238000011084 recovery Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model provides a gun tail with adjustable precise perforation, and belongs to the field of oilfield perforation. Solves the problem of low guiding precision of the existing perforator. The steering gun comprises a steering gun tail body, wherein the whole steering gun tail body is columnar and is provided with a cavity in an axial penetrating way, and the inner wall of an opening at one end of the cavity is provided with directional pins distributed along the radial direction of the steering gun tail body; a steering gun tail guide rod; the adjustable gun tail anchor tooth blocks are provided with a plurality of gun tail guide rods, and are circumferentially and uniformly distributed between the outer wall of the direction-adjusting gun tail guide rods and the inner wall of the cavity; the side wall of the direction-adjusting gun tail guide sleeve, which is far away from one end of the direction-adjusting gun tail body, is provided with a notch, and the axial included angle between the notch and the directional pin shaft is the perforation azimuth compensation angle of the perforator; and the direction-adjusting gun tail locking wire head is used for tightly pressing the direction-adjusting gun tail guide sleeve on the adjustable gun tail anchor tooth block in a locking state. It is mainly used for secondary perforation.
Description
Technical Field
The utility model belongs to the field of oilfield perforation, and particularly relates to a gun tail with an adjustable precise perforation.
Background
The conventional oil and gas well perforation completion has the following conditions to influence the completion effect. Firstly, the perforation density, jet penetration depth and perforation diameter cannot be greatly improved due to the limitation of the loading quantity of the perforating charges, so that the perforation quantity and perforation depth of each meter of oil and gas layer cannot be broken through, and the recovery efficiency of oil and gas is affected. Secondly, along with the deep development of oil fields, most oil wells gradually generate substances such as inorganic and organic scales, bacterial scales and the like in well liquid, such as glue, wax and the like, and deposit scale is generated in perforation tunnels, so that the seepage capability of crude oil stored through rock gaps and cracks is poor, the strength of the produced liquid of the oil wells is insufficient, the injection pressure of the water wells is increased, the production of residual crude oil is influenced, and energy waste is caused.
Therefore, to solve these problems, a new technology and a new process are necessary. Precision secondary perforation is a new technology that mainly aims at and solves these problems. At present, a series of process technologies and products taking a precise perforation technology as a main body can realize precise secondary perforation or multiple perforation at the same layer on the original perforation tunnel, and the collection channel of an oil layer is opened again, so that the productivity of the oil well is recovered. In addition to advanced technology for precise secondary perforation, new technology is implemented and applied by special downhole tools and equipment. The adjustable gun tail for precise perforation is a special equipment in the new technology, which is an indispensable device for adjusting and compensating perforation orientation. In the existing device, the guiding precision of the perforator is lower.
Disclosure of Invention
In view of the above, the utility model aims to provide a gun tail with adjustable precision perforation so as to solve the problem of low guiding precision of the existing perforator.
In order to achieve the above purpose, the present utility model adopts the following technical scheme: a precision perforation adjustable gun tail comprising:
The steering gun tail body is columnar as a whole and is provided with a cavity in an axial penetrating way, and the inner wall of an opening at one end of the cavity is provided with directional pins distributed along the radial direction of the steering gun tail body;
The direction-adjusting gun tail guide rod is coaxially arranged with the direction-adjusting gun tail body, and one end of the direction-adjusting gun tail guide rod is connected in the opening at the other end of the cavity;
The adjustable gun tail anchor tooth blocks are provided with a plurality of gun tail guide rods, and are circumferentially and uniformly distributed between the outer wall of the direction-adjusting gun tail guide rods and the inner wall of the cavity;
The direction-adjusting gun tail guide sleeve is coaxially and rotatably connected to the outer wall of the direction-adjusting gun tail guide rod, one end of the direction-adjusting gun tail guide sleeve is pushed against the side end faces of all the adjustable gun tail anchor tooth blocks, a notch is formed in the side wall, far away from one end of the direction-adjusting gun tail body, of the direction-adjusting gun tail guide sleeve, and the axial included angle between the notch and the directional pin shaft is a perforation azimuth compensation angle of the perforator; and
The steering gun tail locking wire head is coaxially sleeved on the steering gun tail guide sleeve and far away from one end of the adjustable gun tail anchor tooth block, and is connected with the inner wall of the cavity in a locking state and used for tightly pressing the steering gun tail guide sleeve on the adjustable gun tail anchor tooth block.
Further, the gun tail locking head is connected with the direction-adjusting gun tail body through threads.
Further, a first screw which is arranged along the radial direction of the steering gun tail body is arranged on the side wall of the steering gun tail body, and the tip of the first screw is inserted into any thread groove of the gun tail locking head.
Furthermore, one side of the adjustable gun tail anchor tooth block, which is close to the direction-adjusting gun tail guide rod, is a conical cambered surface, and one side of the adjustable gun tail anchor tooth block, which is close to the direction-adjusting gun tail body, is a 90-degree tooth-shaped cambered surface.
Furthermore, the end surface of the direction-adjusting gun tail guide rod, which is contacted with the adjustable gun tail anchor tooth block, is a conical cambered surface.
Further, the number of the adjustable gun tail anchor tooth blocks is three.
Furthermore, the end face of one side of the direction-adjustable gun tail anchor tooth block, facing the direction-adjustable gun tail guide sleeve, is provided with square holes corresponding to the gun tail anchor tooth blocks one by one, and each gun tail anchor tooth block is inserted into the square hole at the corresponding position.
Furthermore, two rubber rings are arranged between the direction-adjusting gun tail guide rod and the direction-adjusting gun tail guide sleeve at intervals along the axial direction of the direction-adjusting gun tail guide rod.
Furthermore, the steering gun tail locking wire head is provided with at least two wrench openings uniformly distributed on the end face of one side of the steering gun tail body outside the cavity.
Furthermore, the direction-adjusting gun tail guide sleeve extends out of the outer wall of one end of the direction-adjusting gun tail body hole, a plurality of second screws are arranged at intervals, and each second screw is pushed against the outer wall of the direction-adjusting gun tail guide rod in the radial direction in a locking state.
Compared with the prior art, the utility model has the beneficial effects that:
The adjustable gun tail can compensate the perforation azimuth angle of the precise secondary perforation by arranging the directional pin shaft and the notch, and can automatically rotate the perforator under the assistance of a downhole tool, so that the perforator can automatically align the perforation azimuth to be perforated under the well, and process technical support is provided for the precise secondary perforation.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:
FIG. 1 is a half-sectional view of a precision perforation-adjustable gun tail according to the present utility model;
FIG. 2 is a cross-sectional view of the steering bolt guide sleeve of the present utility model;
FIG. 3 is a view in the A-A direction of FIG. 2 in accordance with the present utility model;
FIG. 4 is a schematic diagram of a notch according to the present utility model;
FIG. 5 is a cross-sectional view of an adjustable stock bolt tooth block according to the present utility model;
FIG. 6 is a schematic perspective view of an adjustable stock bolt tooth block according to the present utility model;
FIG. 7 is a schematic diagram showing the distribution positions of the wrench notches according to the present utility model;
FIG. 8 is a schematic cross-sectional view of a wrench for engaging a wrench opening to adjust a steering gun tail locking head;
fig. 9 is a schematic diagram of a front view of a wrench for engaging a wrench opening to adjust a steering gun locking head.
A directional pin shaft 1; a steering gun tail body 2; a steering gun tail guide rod 3; an adjustable gun tail anchor tooth block 4; a steering gun tail guide sleeve 5; a square hole 51; a notch 52; a first screw 6; a steering gun tail locking wire head 7; wrench notch 71; a second screw 8; a rubber ring 9.
Detailed Description
The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. It should be noted that, in the case of no conflict, embodiments of the present utility model and features of the embodiments may be combined with each other, and the described embodiments are only some embodiments of the present utility model, not all embodiments.
It should be noted that, the descriptions of the directions of "left", "right", "upper", "lower", "top", "bottom", and the like of the present utility model are defined based on the relation of orientations or positions shown in the drawings, and are only for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the structures must be constructed and operated in a specific orientation, and thus, the present utility model should not be construed as being limited thereto. In the description of the present utility model, the meaning of "plurality" is two or more unless specifically defined otherwise.
In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Referring to the drawings for illustrating the embodiment, a precision perforation adjustable gun tail comprises:
The steering gun tail body 2 is columnar as a whole and is provided with a cavity in an axial penetrating way, and an opening inner wall at one end of the cavity is provided with directional pin shafts 1 distributed along the radial direction of the steering gun tail body 2;
The direction-adjusting gun tail guide rod 3 is coaxially arranged with the direction-adjusting gun tail body 2, and one end of the direction-adjusting gun tail guide rod is connected in the opening at the other end of the cavity;
The adjustable gun tail anchor tooth blocks 4 are provided with a plurality of guide rods 3 which are circumferentially and uniformly distributed between the outer wall of the direction-adjusting gun tail guide rod and the inner wall of the cavity;
The steering gun tail guide sleeve 5 is coaxially and rotatably connected to the outer wall of the steering gun tail guide rod 3, one end of the steering gun tail guide sleeve 5 is pushed against the side end faces of all the adjustable gun tail anchor tooth blocks 4, a notch 52 is formed in the side wall of one end of the steering gun tail guide sleeve 5, which is far away from the steering gun tail body 2, the axial included angle between the notch 52 and the directional pin shaft 1 is a perforating position compensation angle of the perforator, the adjusting angle is an angle for compensating the perforating position by taking a supporting anchor key as a reference, and reference compensation angle is used for adjusting so as to provide reference for secondary perforation and accurately control the secondary perforation, thereby improving the accuracy of the secondary perforation; and
The steering gun tail locking wire head 7 is coaxially sleeved on the steering gun tail guide sleeve 5 and far away from one end of the adjustable gun tail anchor tooth block 4, the steering gun tail locking wire head 7 is connected with the inner wall of the cavity, and in a locking state, the gun tail locking wire head 7 is used for tightly pressing the steering gun tail guide sleeve 5 on the adjustable gun tail anchor tooth block 4.
In this embodiment, the tail locking head 7 is screwed with the steering tail body 2. Through rotatory tail locking wire head 7, can make tail locking wire head 7 self to the turning towards in the cavity of the body 2 of the stock or outwards move, when tail locking wire head 7 to the turning towards the cavity of the body 2 of the stock, can promote gradually to turn towards the stock uide bushing 5 and extrude on to adjustable stock anchor tooth piece 4 for adjustable stock anchor tooth piece 4 expands along with the conical surface motion of turning towards stock guide bar 3, compresses tightly back with turning towards stock uide bushing 5, turning towards stock uide bushing 5 can not take place relative rotation with turning towards stock guide bar 3 any more.
In this embodiment, a first screw 6 arranged along the radial direction of the steering gun tail body 2 is arranged on the side wall of the steering gun tail body 2, and the tip of the first screw 6 is inserted into any thread groove of the gun tail locking head 7. The gun tail locking wire head 7 is limited by the first screw 6 after being screwed up, so that the back buckling phenomenon is prevented, and the stability of connection between the gun tail locking wire head 7 and the direction-adjusting gun tail body 2 is improved.
In this embodiment, the side of the adjustable gun tail anchor tooth block 4, which is close to the direction-adjusting gun tail guide rod 3, is a conical cambered surface, and the side of the adjustable gun tail anchor tooth block, which is close to the direction-adjusting gun tail body 2, is a 90-degree tooth-shaped cambered surface. The end surface of the direction-adjusting gun tail guide rod 3, which is contacted with the adjustable gun tail anchor tooth block 4, is a conical cambered surface. Through this kind of setting method for the in-process of tightening of stock locking wire head 7 can make adjustable stock anchor tooth piece 4 can be expanded through the interact of cambered surface after receiving the promotion effect, prevents to adjust to take place relative rotation between stock uide bushing 5 and the alignment stock guide bar 3.
In this embodiment, the number of the adjustable gun tail anchor tooth blocks 4 is three.
In this embodiment, the end face of the direction-adjusting gun tail guide sleeve 5 facing to one side of the adjustable gun tail anchor tooth block 4 is provided with square holes 51 corresponding to each of the adjustable gun tail anchor tooth blocks 4 one by one, and each of the adjustable gun tail anchor tooth blocks 4 is inserted into the square hole 51 at the corresponding position. The square hole 51 can improve the precision of position control of the adjustable gun tail anchor tooth block 4, prevent the phenomenon that the adjustable gun tail anchor tooth block 4 is mixed and fleed, and improve the stability of the operation of the adjustable gun tail.
In the embodiment, two rubber rings 9 are arranged between the steering tail guide rod 3 and the steering tail guide sleeve 5 at intervals along the axial direction of the steering tail guide rod 3. Can promote the leakproofness between the steering stock guide bar 3 and the steering stock uide bushing 5, prevent that liquid from entering into the steering stock uide bushing 5, improve the running stability of device.
In this embodiment, at least two wrench notches 71 are uniformly distributed on the end surface of the steering gun tail locking wire 7 facing the outer side of the cavity of the steering gun tail body 2. By providing the spanner opening 71, the operator can conveniently adjust the steering gun locking head 7.
In this embodiment, the steering bolt guiding sleeve 5 extends out of the outer wall of one end of the steering bolt body 2, and a plurality of second screws 8 are arranged at intervals, and each second screw 8 is pushed against the outer wall of the steering bolt guiding rod 3 in the radial direction in the locking state. The second screw 8 can play an auxiliary reinforcing role, and the stability of connection between the steering gun tail guide sleeve 5 and the steering gun tail guide rod 3 is improved.
When the accurate perforation adjustable gun tail is used in operation, the adjustable gun tail is arranged below a cable perforation pipe string, and a special angle adjuster is used in advance to adjust the perforation azimuth angle to be compensated according to perforation construction design requirements before assembly. The accurate perforation can be adjusted gun tails or directly connected with an adapter at the lower end of the perforator or connected with a fixed-position short circuit at the lower end of the perforator. The well connected perforating tube string is delivered to the underground by a cable, the perforating tube string is arranged on the upper end surface of a supporting anchor of an underground tool, a steering gun tail guide rod 3 is inserted into a central hole of the supporting anchor, the tip end of a steering gun tail guide sleeve 5 is provided with a guide inclined plane and contacts with an azimuth key of the supporting anchor of the underground tool through the guide inclined plane, torsion is generated between the steering gun tail guide sleeve 5 and the azimuth key of the supporting anchor when the steering gun tail guide sleeve falls down, and the perforating gun automatically rotates and turns under the action of torsion to automatically align to a preset perforating azimuth.
The embodiments of the utility model disclosed above are intended only to help illustrate the utility model. The examples are not intended to be exhaustive or to limit the utility model to the precise forms disclosed. Many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best understand and utilize the utility model.
Claims (10)
1. A precision perforation adjustable gun tail, comprising:
The steering gun tail body (2) is columnar as a whole and is provided with a cavity in an axial penetrating way, and the inner wall of an opening at one end of the cavity is provided with directional pins (1) distributed along the radial direction of the steering gun tail body (2);
A direction-adjusting gun tail guide rod (3) which is coaxially arranged with the direction-adjusting gun tail body (2) and one end of which is connected in the opening of the other end of the cavity;
The adjustable gun tail anchor tooth blocks (4) are provided with a plurality of guide rods (3) which are uniformly distributed on the circumference and are arranged between the outer wall of the direction-adjusting gun tail guide rod and the inner wall of the cavity;
The direction-adjusting gun tail guide sleeve (5) is coaxially connected to the outer wall of the direction-adjusting gun tail guide rod (3) in a rotating way, one end of the direction-adjusting gun tail guide sleeve is pushed against the side end faces of all the adjustable gun tail anchor tooth blocks (4), a notch (52) is formed in the side wall, far away from one end of the direction-adjusting gun tail body (2), of the direction-adjusting gun tail guide sleeve (5), and the axial included angle between the notch (52) and the directional pin shaft (1) is a perforation azimuth compensation angle of the perforating gun; and
The steering gun tail locking wire head (7) is coaxially sleeved on the steering gun tail guide sleeve (5) and far away from one end of the adjustable gun tail anchor tooth block (4), the steering gun tail locking wire head (7) is connected with the inner wall of the cavity, and in a locking state, the gun tail locking wire head (7) is used for tightly pressing the steering gun tail guide sleeve (5) on the adjustable gun tail anchor tooth block (4).
2. The precision perforation-adjustable gun tail according to claim 1, wherein: the gun tail locking wire head (7) is connected with the direction-adjusting gun tail body (2) through threads.
3. The precision perforation-adjustable gun tail according to claim 2, wherein: the novel steering gun is characterized in that a first screw (6) which is arranged along the radial direction of the steering gun body (2) is arranged on the side wall of the steering gun body (2), and the tip of the first screw (6) is inserted into any thread groove of a gun locking head (7).
4. The precision perforation-adjustable gun tail according to claim 2, wherein: the side of the adjustable gun tail anchor tooth block (4) close to the direction-adjusting gun tail guide rod (3) is a conical cambered surface, and the side of the adjustable gun tail anchor tooth block close to the direction-adjusting gun tail body (2) is a 90-degree tooth-shaped cambered surface.
5. The precision perforation-adjustable gun tail according to claim 4, wherein: the end face of the direction-adjusting gun tail guide rod (3) contacted with the adjustable gun tail anchor tooth block (4) is a conical cambered surface.
6. The precision perforation-adjustable gun tail according to claim 5, wherein: the number of the adjustable gun tail anchor tooth blocks (4) is three.
7. A precision perforation adjustable gun tail according to any of claims 1-6, wherein: the adjustable gun tail anchor tooth block comprises a gun tail guide sleeve (5), wherein square holes (51) corresponding to the gun tail anchor tooth blocks (4) one by one are formed in the end face of one side, facing the gun tail anchor tooth blocks (4), of the gun tail guide sleeve, and each gun tail anchor tooth block (4) is inserted into each square hole (51) in the corresponding position.
8. The precision perforation-adjustable gun tail according to claim 7, wherein: two rubber rings (9) are arranged between the direction-adjusting gun tail guide rod (3) and the direction-adjusting gun tail guide sleeve (5) at intervals along the axial direction of the direction-adjusting gun tail guide rod (3).
9. The precision perforation-adjustable gun tail according to claim 7, wherein: at least two wrench openings (71) are uniformly distributed on the end face of the outer side of the cavity of the direction-adjusting gun tail body (2) towards the direction-adjusting gun tail locking wire head (7).
10. The precision perforation-adjustable gun tail according to claim 7, wherein: the steering gun tail guide sleeve (5) extends out of the outer wall of one end of the hole of the steering gun tail body (2), a plurality of second screws (8) are arranged at intervals, and each second screw (8) is pushed against the outer wall of the steering gun tail guide rod (3) along the radial direction in a locking state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323183365.6U CN221032556U (en) | 2023-11-24 | 2023-11-24 | Adjustable gun tail of accurate perforation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323183365.6U CN221032556U (en) | 2023-11-24 | 2023-11-24 | Adjustable gun tail of accurate perforation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221032556U true CN221032556U (en) | 2024-05-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323183365.6U Active CN221032556U (en) | 2023-11-24 | 2023-11-24 | Adjustable gun tail of accurate perforation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221032556U (en) |
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2023
- 2023-11-24 CN CN202323183365.6U patent/CN221032556U/en active Active
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