CN211258542U

CN211258542U - Hydraulic anchor for oil development convenient to dismouting

Info

Publication number: CN211258542U
Application number: CN201922452265.6U
Authority: CN
Inventors: 杨明辉
Original assignee: Sichuan Ruijia Petroleum Technology Co ltd
Current assignee: Sichuan Ruijia Petroleum Technology Co ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-08-14
Anticipated expiration: 2029-12-30

Abstract

The utility model belongs to the technical field of hydraulic anchor, a hydraulic anchor for oil exploitation convenient to disassemble and assemble is disclosed, which comprises an anchor body and a plurality of anchor flukes uniformly arranged on the anchor body, wherein each anchor fluke comprises an anchor fluke seat and a fluke body, and the bottom of the anchor fluke seat is provided with a threaded hole which is communicated upwards; the bottom of the claw body is provided with a connecting hole extending upwards, and the inner side wall of the connecting hole is provided with an annular nut mounting groove; the nut mounting groove is internally provided with a connecting nut, the threaded hole is internally connected with a connecting bolt, and the connecting end of the connecting bolt upwards extends into the connecting hole and is connected with the connecting nut. The utility model provides a new connecting structure for connecting a claw body and a fluke base, which can not occupy the claw surface of the fluke; through setting up annular gland, just can take out the fluke and restrict it in the fluke mounting hole through dismouting annular gland, dismantle convenient, swift.

Description

Hydraulic anchor for oil development convenient to dismouting

Technical Field

The utility model belongs to the technical field of the hydraulic anchor, concretely relates to hydraulic anchor for oil development convenient to dismouting.

Background

The hydraulic anchor is a common underground tool which is used for overcoming the creeping of a pipe column in the operation by biting the inner wall of a sleeve pipe by using the engagement of an anchor claw in the underground operation such as oil testing, oil extraction, leakage finding, fracturing and the like. The existing hydraulic anchor limits the anchor fluke from further protruding through a fixed pressing plate, and the arrangement structure reduces the area of the fluke surface of the anchor fluke, so that the anchoring performance is reduced; in the other method, bolt connecting holes are formed in the claw surface of the anchor claw to connect the claw body with the anchor claw seat, and the area of the claw surface can be reduced by the connecting mode, so that the anchoring performance is reduced; and the existing fluke and the anchor body are difficult to disassemble, so that the anchor fluke is inconvenient to replace or maintain.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a hydraulic anchor for oil development convenient to dismouting, the fluke of solving current hydraulic anchor make its claw face area reduce and lead to the problem that the anchor performance reduces because relevant structure.

The utility model discloses the technical scheme who adopts does:

a hydraulic anchor convenient to disassemble and assemble for oil exploitation comprises an anchor body and a plurality of anchor flukes uniformly arranged on the anchor body, wherein each anchor fluke comprises an anchor fluke seat and a fluke body, and the bottom of each anchor fluke seat is provided with an upward through threaded hole; the bottom of the claw body is provided with a connecting hole extending upwards, and the inner side wall of the connecting hole is provided with an annular nut mounting groove; the nut mounting groove is internally provided with a connecting nut, the threaded hole is internally connected with a connecting bolt, and the connecting end of the connecting bolt upwards extends into the connecting hole and is connected with the connecting nut.

Furthermore, for better explanation of the utility model, a slot is arranged at the top of the anchor claw seat and is communicated with the threaded hole; the claw body comprises a claw part and an insertion block integrally connected to the bottom of the claw part, and the insertion block is in insertion fit with the insertion slot.

Further, for better right the utility model discloses explain, the screw hole bottom is provided with the heavy groove that is used for installing connecting bolt, the sealing washer mounting groove has been seted up at the top in heavy groove, sealing washer mounting groove in-connection has O type sealing washer.

Furthermore, for better explanation of the utility model, a channel is arranged in the anchor body, a fluke supporting tube is arranged at the inner side of the channel, fluke mounting notches corresponding to each fluke are respectively arranged on the fluke supporting tube, and fluke mounting holes corresponding to each fluke mounting notch are respectively arranged on the anchor body; an annular boss is arranged on the periphery of the bottom end of the anchor claw seat, and the anchor claw is connected with the inner wall of the anchor claw mounting hole in a sliding and sealing mode through the annular boss; the upper end of the fluke mounting hole is detachably provided with an annular gland, the inner side wall of the annular gland protrudes towards the inner side of the annular gland and forms a limiting part, and a spring is arranged between the limiting part and the annular boss.

Further, for the better the utility model discloses explain, the week side of annular gland is provided with integrative connecting portion, connecting portion pass through bolt and anchor body fixed connection.

Further, for the better right the utility model discloses explain, the gland mounting groove that matches the correspondence with annular gland is seted up to the outer wall of the anchor body.

The utility model has the advantages that:

the utility model provides a new connecting structure for connecting a claw body and a fluke base, which can not occupy the claw surface of the fluke, thereby keeping the anchoring performance of the fluke; the connecting nut is arranged in the claw body instead of the threaded hole connected with the connecting thread, so that the claw body and the anchor claw seat can be conveniently detached and connected, the claw body can be prevented from being damaged, and the structure is simple and practical; through setting up annular gland, just can take out the fluke and restrict it in the fluke mounting hole through dismouting annular gland, dismantle convenient, swift.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is an enlarged schematic view of the structure of portion A of FIG. 1;

in the figure: 1-an anchor body; 2-a channel; 3-anchor fluke supporting tube; 4-anchor fluke mounting notches; 5-a fluke; 501-a claw body; 502-fluke seat; 503-connecting bolt; 6-annular gland; 7-anchor fluke mounting holes; 8-a gland mounting groove; 9-spring.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the embodiments of the present invention, it should be noted that the indication of the position or the positional relationship is based on the position or the positional relationship shown in the drawings, or the position or the positional relationship that the utility model is usually placed when using, or the position or the positional relationship that the skilled person conventionally understands, or the position or the positional relationship that the utility model is usually placed when using, and is only for the convenience of describing the present invention and simplifying the description, but does not indicate or suggest that the indicated device or element must have a specific position, be constructed and operated in a specific position, and thus, cannot be understood as limiting the present invention. Furthermore, the terms "first" and "second" are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be directly connected or indirectly connected through an intermediate. For those skilled in the art, the drawings of the present invention can be understood in detail to describe the embodiments of the present invention clearly and completely, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

The present invention will be further described with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1 and 2, the hydraulic anchor for oil production convenient to disassemble and assemble comprises an anchor body 1 and a plurality of anchor flukes 5 uniformly arranged on the anchor body 1, wherein each anchor fluke 5 comprises an anchor fluke seat 502 and a fluke body 501, and the bottom of each anchor fluke seat 502 is provided with an upward through threaded hole; the bottom of the claw body 501 is provided with a connecting hole extending upwards, an annular nut mounting groove is formed in the inner side wall of the connecting hole, and a connecting nut is arranged in the claw body 501 instead of being connected with a connecting thread through a threaded hole, so that the claw body 501 and the fluke base 502 can be detached and connected conveniently, the claw body 501 can be prevented from being damaged, and the structure is simple and practical; the connecting nut is arranged in the nut mounting groove, the connecting bolt 503 is connected in the threaded hole, the connecting end of the connecting bolt 503 upwards extends into the connecting hole and is connected with the connecting nut, the connecting bolt 503 is connected with the threaded hole and the connecting nut in the claw body 501, so that the connection between the anchor claw seat 502 and the claw body 501 is firmer and more stable, and meanwhile, the connecting bolt can be conveniently detached.

Further, as a preferred embodiment, as shown in fig. 2, a slot is provided at the top of the anchor claw seat 502, and the slot is communicated with the threaded hole; the claw body 501 comprises a claw part and an insertion block integrally connected to the bottom of the claw part, the insertion block is in insertion fit with the insertion slot, the claw body 501 is inserted into the anchor claw seat 502 through the insertion block, so that the connection surface between the claw body and the anchor claw seat is increased and is not on the same plane any more, the sealing performance can be improved, and the claw body is firmer.

Further, as shown in fig. 2, preferably, a sunken groove for installing the connecting bolt 503 is formed in the bottom end of the threaded hole, the sunken groove can be used for installing the bolt head of the connecting bolt 503 therein and can enable the bottom of the anchor claw seat 502 to be a relatively flat plane, so that the bolt head can be subjected to hydraulic pressure, a sealing ring installation groove is formed in the top of the sunken groove, an O-shaped sealing ring is connected in the sealing ring installation groove, and the O-shaped sealing ring is arranged to enable the connecting bolt 503 to have a relatively good sealing effect after being screwed tightly, so that well fluid is prevented from flowing in.

Further, as shown in fig. 1 and fig. 2, preferably, as one of the embodiments, a channel 2 is provided in the anchor body 1, a fluke support tube 3 is provided inside the channel 2, fluke mounting notches 4 corresponding to each fluke 5 are formed in the fluke support tube 3, and fluke mounting holes 7 corresponding to each fluke mounting notch 4 are formed in the anchor body 1; an annular boss is arranged on the periphery of the bottom end of the anchor jaw seat 502, the anchor jaw 5 is connected with the inner wall of the anchor jaw mounting hole 7 in a sliding and sealing mode through the annular boss, and the sliding and sealing connection is realized by arranging a sliding sealing ring in a sealing ring mounting groove formed in the annular boss; the upper end of fluke mounting hole 7 can be dismantled and be provided with annular gland 6, the inside wall of annular gland 6 is to its inboard protrusion and constitute spacing portion, be provided with spring 9 between spacing portion and the annular boss, annular gland 6 can be dismantled, like this pull down annular gland 6 can directly take out fluke 5, convenient and fast, and when the installation only need in fluke 5 with spring 9 install after target in place can, convenient operation, practicality. Preferably, the peripheral side of the tip of fluke holder 502 is also connected with annular gland 6 in a sliding and sealing manner.

Further, as one of the embodiments, it is preferable that, as shown in fig. 1 and 2, an integrated connecting portion is provided on the circumferential side of the annular gland 6, and the connecting portion is fixedly connected to the anchor body 1 by a bolt.

Further, as a preferred embodiment, as shown in fig. 2, a gland mounting groove 8 corresponding to the annular gland 6 in a matching manner is formed in the outer wall of the anchor body 1, and the annular gland 6 is mounted by setting the gland mounting groove 8, so that the sealing performance can be improved, and the appearance of the anchor body 1 can be improved.

The utility model discloses an application principle: when the anchor is used, well fluid passes through the channel 2 in the anchor body 1, the pressure of the well fluid pushes the anchor jaw seat 502 to move towards the outer side direction, so that the anchor jaw 5 extends out to anchor the casing and fix the oil pipe, and the spring 9 is in a compressed state in the process; when the anchor is not needed, the pressure is released, and the anchor fluke 5 resets under the action of the spring 9 to release the anchor.

The present invention is not limited to the above-mentioned optional embodiments, and any other products in various forms can be obtained by anyone under the teaching of the present invention, and any changes in the shape or structure thereof, all the technical solutions falling within the scope of the present invention, are within the protection scope of the present invention.

Claims

1. The utility model provides a hydraulic anchor for oil development convenient to dismouting, includes anchor block (1) and evenly sets up a plurality of flukes (5) on anchor block (1), its characterized in that: the anchor claw (5) comprises an anchor claw seat (502) and a claw body (501), and the bottom of the anchor claw seat (502) is provided with an upward through threaded hole; the bottom of the claw body (501) is provided with a connecting hole extending upwards, and the inner side wall of the connecting hole is provided with an annular nut mounting groove; the nut mounting groove is internally provided with a connecting nut, the threaded hole is internally connected with a connecting bolt (503), and the connecting end of the connecting bolt (503) extends upwards into the connecting hole and is connected with the connecting nut.

2. The easy-to-disassemble hydraulic anchor for oil exploitation according to claim 1, wherein: the top of the anchor claw seat (502) is provided with a slot which is communicated with the threaded hole; the claw body (501) comprises a claw part and an insertion block integrally connected to the bottom of the claw part, and the insertion block is in insertion fit with the insertion groove.

3. The easy-to-disassemble hydraulic anchor for oil exploitation according to claim 2, wherein: the threaded hole bottom is provided with the heavy groove that is used for installing connecting bolt (503), the sealing washer mounting groove has been seted up at the top in heavy groove, sealing washer mounting groove in-connection has O type sealing washer.

4. An easily removable hydraulic anchor for oil extraction according to any one of claims 1 to 3, wherein: a channel (2) is arranged in the anchor body (1), a fluke supporting tube (3) is arranged on the inner side of the channel (2), fluke mounting notches (4) corresponding to each fluke (5) are formed in the fluke supporting tube (3), and fluke mounting holes (7) corresponding to each fluke mounting notch (4) are formed in the anchor body (1); an annular boss is arranged on the periphery of the bottom end of the anchor claw seat (502), and the anchor claw (5) is connected with the inner wall of the anchor claw mounting hole (7) in a sliding and sealing mode through the annular boss; the upper end of fluke mounting hole (7) can be dismantled and be provided with annular gland (6), the inside wall of annular gland (6) is to its inboard protrusion and constitute spacing portion, be provided with spring (9) between spacing portion and the annular boss.

5. The easy-to-disassemble hydraulic anchor for oil exploitation according to claim 4, wherein: the periphery of the annular gland (6) is provided with an integrated connecting part, and the connecting part is fixedly connected with the anchor body (1) through bolts.

6. The easy-to-disassemble hydraulic anchor for oil exploitation according to claim 5, wherein: the outer wall of the anchor body (1) is provided with a gland mounting groove (8) corresponding to the annular gland (6) in a matching mode.