CN210422566U

CN210422566U - Oil gas well temporary plugging reverse sieve tube

Info

Publication number: CN210422566U
Application number: CN201921679723.3U
Authority: CN
Inventors: 蒋承刚; 张义刚; 刘军荣
Original assignee: Holgos Fraser Reverse Petroleum Technology Co Ltd
Current assignee: Holgos Fraser Reverse Petroleum Technology Co Ltd
Priority date: 2019-10-09
Filing date: 2019-10-09
Publication date: 2020-04-28
Anticipated expiration: 2029-10-09

Abstract

The utility model belongs to oil gas well screen pipe field, concretely relates to oil gas well blocks up reverse screen pipe temporarily can realize fracturing, acidizing, sand control, well completion integration. Including the screen pipe body, the lower extreme of screen pipe body has the joint through threaded connection, the support bar is installed to the upper end of screen pipe body, the support bar internal rotation is connected with the threaded rod, the upper end fixedly connected with carousel of threaded rod, the lower extreme of carousel and the upper end contact of support bar, the upper end fixedly connected with handle of carousel, there is the screw thread seat outside of threaded rod through threaded connection, the outside fixedly connected with bracing piece of screw thread seat, the upper end fixedly connected with gag lever post of bracing piece. This scheme design support bar, threaded rod, screw seat, first articulated seat, articulated rod, parts such as the articulated seat of second, connecting strip, rubber strip and sprue carry out the shutoff to the sieve mesh, can realize quick shutoff and remove the shutoff, but the shutoff mechanism reuse who adopts moreover, the availability factor is high.

Description

Oil gas well temporary plugging reverse sieve tube

Technical Field

The utility model belongs to oil gas well screen pipe field, concretely relates to oil gas well blocks up reverse screen pipe temporarily.

Background

At present, in the using process of the oil and gas well screen pipe, temporary plugging needs to be carried out on a reverse screen pipe sometimes, and after the screen pipe is plugged for a period of time, the plugging needs to be removed.

The temporary plugging of the existing sieve tube is mainly performed by pre-plugging through a plugging agent, and after the sieve tube enters an oil well for a certain depth, the plugging agent on the sieve tube is melted, so that the plugging removal of the sieve tube is realized. However, the temperature in the well is difficult to master and does not necessarily meet the actual working conditions, so that the blockage removal is difficult to realize. And the plugging agent is melted in the well after being used and cannot be recovered. Accordingly, there is a need for improvements in the art.

Disclosure of Invention

An object of the utility model is to provide an oil gas well blocks up reverse sieve pipe temporarily has solved the inconvenient problem of removing the shutoff of sieve pipe shutoff in-process, and the equal reuse of part that this scheme adopted moreover, the availability factor is high.

In order to achieve the purpose, the utility model provides an oil gas well temporary plugging reverse sieve tube, which comprises a sieve tube body, wherein the lower end of the sieve tube body is connected with a joint through screw threads, the upper end of the sieve tube body is provided with a support bar, a threaded rod is connected in the support bar in a rotating way, the upper end of the threaded rod is fixedly connected with a turntable, the lower end of the turntable is contacted with the upper end of the support bar, the upper end of the turntable is fixedly connected with a handle, the outer side of the threaded rod is connected with a threaded seat through screw threads, the outer side of the threaded seat is fixedly connected with a support bar, the upper end of the support bar is fixedly connected with a limit rod, the surface of the threaded seat is fixedly connected with a first hinging seat, the first hinging seat is hinged with a hinging rod, the right end of the hinging rod is hinged with a second hinging seat, the right-hand member of rubber strip is provided with the sprue, rubber strip and sprue formula structure as an organic whole.

The principle of the utility model lies in: when the sieve pores on the sieve tube body need to be blocked, the support bars are firstly arranged in the limiting grooves at the upper end of the sieve tube body, the connecting bars are contacted with the support bars under the initial state to support the connecting bars, the blocking blocks are contacted with the inner wall of the sieve tube body, then the handle is rotated to drive the rotary disc to rotate, the rotary disc drives the threaded rods to rotate, as the limiting rods and the support bars limit the threaded seats, the threaded seats cannot rotate, and therefore the threaded rods and the threaded seats generate threaded motion to generate relative displacement, so that the threaded seats move downwards, the threaded seats drive the first hinge seats to move downwards, the first hinge seats drive the hinge rods to move downwards, when the hinge rods move downwards, the second hinge seats can be pushed, the second hinge seats have pressure on the connecting bars and the rubber strips, so that the blocking blocks on the rubber strips are clamped into the sieve pores to block the sieve pores, and the sieve pores are conveniently and quickly blocked when, the reverse handle for the threaded rod reverses, and the threaded rod makes the screw thread seat reset through the screw thread effect, and the screw thread seat drives first articulated seat and resets, and first articulated seat drives the hinge bar and resets, and the hinge bar drives the articulated seat of second and resets, and the articulated seat of second drives the connecting strip and resets, and the connecting strip drives rubber strip and sprue and resets, can remove the shutoff to the sieve mesh.

The beneficial effects of the utility model reside in that: this scheme design support bar, threaded rod, screw seat, first articulated seat, articulated rod, parts such as the articulated seat of second, connecting strip, rubber strip and sprue carry out the shutoff to the sieve mesh, can realize quick shutoff and remove the shutoff, but the shutoff mechanism reuse who adopts moreover, the availability factor is high. Meanwhile, the integration of fracturing, acidizing, sand prevention and well completion can be realized.

Furthermore, sieve pores are formed in the side wall of the sieve tube body, the sieve pores are longitudinally distributed in the side wall of the sieve tube body, and blocking blocks are clamped in the sieve pores. The plugging blocks are made of high-elastic rubber, and corresponding sieve holes can be plugged through the design of the plugging blocks.

Furthermore, the upper end of screen pipe body has seted up the spacing groove, the quantity of spacing groove is two, and is the symmetric distribution in the upper end of screen pipe body, the spacing inslot block has the support bar. Through the design of spacing groove, can carry on spacingly to the support bar, prevent that the support bar from taking place to rotate, also realized the installation of support bar.

Further, the through-hole has been seted up to the middle part card of support bar, the through-hole internal rotation is connected with the threaded rod, the outside fixedly connected with spacing ring of threaded rod, the upper end of spacing ring and the lower extreme contact of support bar. The design of through-hole provides installation space for the threaded rod, and the design of spacing ring can prevent the threaded rod rebound.

Furthermore, the guide holes are formed in the support bar, the number of the guide holes is two, and the limiting rods are connected in the guide holes in a sliding mode. Through the cooperation of guiding hole and gag lever post, can carry on spacingly to the screw thread seat, prevent that the screw thread seat from taking place to rotate.

Further, the quantity of bracing piece is two, and the bracing piece is the symmetrical design in the left and right sides of screw thread seat, every the equal fixedly connected with gag lever post in upper end of bracing piece. Through the design of bracing piece, can cooperate with the gag lever post, carry on spacingly to the screw thread seat, prevent that the screw thread seat from taking place to rotate.

Drawings

FIG. 1 is a schematic view of a temporary plugging reverse screen for an oil and gas well according to an embodiment of the present invention;

FIG. 2 is an enlarged view of section A of FIG. 1 illustrating a temporary plugging of a retrograde screen in an oil and gas well according to an embodiment of the present invention;

FIG. 3 is an enlarged view of the portion B of FIG. 1 illustrating a temporary plugging of a retrograde screen in an oil and gas well according to an embodiment of the present invention;

FIG. 4 is a top view of the screen body of FIG. 1 illustrating a reverse screen for temporarily plugging an oil and gas well in accordance with an embodiment of the present invention;

FIG. 5 is a top view of the threaded seat of FIG. 1 with a reverse screen for temporarily plugging an oil and gas well in accordance with an embodiment of the present invention.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the sieve tube comprises a sieve tube body 1, sieve holes 2, limiting grooves 3, joints 4, supporting bars 5, through holes 6, guide holes 7, threaded rods 8, limiting rings 9, a rotary table 10, a handle 11, a threaded seat 12, supporting rods 13, limiting rods 14, a first hinging seat 15, a hinging rod 16, a second hinging seat 17, a connecting strip 18, a rubber strip 19 and a blocking block 20.

As shown in fig. 1, fig. 2, fig. 4 shows, this embodiment provides a reverse screen pipe of stifled temporarily of oil gas well, including screen pipe body 1, screen hole 2 is seted up to screen pipe body 1's lateral wall, screen hole 2 is longitudinal distribution at screen pipe body 1's lateral wall, equal joint sprue 20 in every screen hole 2, sprue 20 is made by high-elastic rubber, seal sieve hole 2, spacing groove 3 is seted up to screen pipe body 1's upper end, the quantity of spacing groove 3 is two, and be the symmetric distribution in screen pipe body 1's upper end, the interior joint support bar 5 of spacing groove 3, design through spacing groove 3 facilitates the installation support bar 5, and it is spacing to support bar 5, prevent that support bar 5 from rotating, screen pipe body 1's lower extreme passes through threaded connection and connects 4.

As shown in fig. 3, through-hole 6 is seted up at the middle part of support bar 5, through-hole 6 internal rotation connecting threaded rod 8, the design of through-hole 6 provides installation space for threaded rod 8, set up guiding hole 7 on the support bar 5, the quantity of guiding hole 7 is two, and equal sliding connection gag lever post 14 in the guiding hole 7, threaded rod 8's outside welding spacing ring 9, the upper end of spacing ring 9 and the lower extreme contact of support bar 5, prevent threaded rod 8 rebound, threaded rod 8's upper end welding carousel 10, the upper end welding handle 11 of carousel 10, handle 11 conveniently rotates carousel 10, thereby make things convenient for threaded rod 8 to rotate.

As shown in fig. 1 and 5, the threaded seat 12 is connected to the outer side of the threaded rod 8 through threads, the supporting rods 13 are welded to the left side and the right side of the threaded seat 12 respectively, the limiting rods 14 are welded to the upper ends of the supporting rods 13, four first hinged seats 15 are welded to the outer side of the threaded seat 12, each first hinged seat 15 is hinged to one hinged rod 16, the other end of each hinged rod 16 is hinged to one second hinged seat 17, the connecting strips 18 are welded to the second hinged seats 17, the surfaces of the connecting strips 18 are bonded with the rubber strips 19 through strong glue, the blocking blocks 20 are longitudinally uniformly distributed on the surfaces of the rubber strips 19, the rubber strips 19 and the blocking blocks 20 are of an integrated structure and made of high-elasticity rubber, and the blocking blocks 20 have good elasticity and can penetrate through the sieve holes 2 and are convenient to enter and separate from the sieve holes 2.

The utility model discloses the concrete implementation process as follows: when the sieve pore 2 on the sieve tube body 1 needs to be blocked, the support bar 5 is firstly placed in the limiting groove 3 at the upper end of the sieve tube body 1, in an initial state, the connecting bar 18 is contacted with the support bar 13 to support the connecting bar 18, the blocking block 20 is contacted with the inner wall of the sieve tube body 1, then the handle 11 is rotated, the handle 11 drives the turntable 10 to rotate, the turntable 10 drives the threaded rod 8 to rotate, the threaded seat 12 is limited by the limiting bar 14 and the support bar 13, so that the threaded seat 12 cannot rotate, the threaded rod 8 and the threaded seat 12 generate threaded motion to generate relative displacement, the threaded seat 12 moves downwards, the threaded seat 12 drives the first hinged seat 15 to move downwards, the first hinged seat 15 drives the hinged rod 16 to move downwards, when the hinged rod 16 moves downwards, the second hinged seat 17 can be pushed, and the second hinged seat 17 has pressure on the connecting bar 18 and the rubber strip 19, make in the sprue 20 card on the rubber strip 19 goes into sieve mesh 2, carry out the shutoff to sieve mesh 2, convenient and fast, when need remove the shutoff, reversal handle 11, make 8 reversals of threaded rod, threaded rod 8 makes screw thread seat 12 reset through the screw action, screw thread seat 12 drives first articulated seat 15 and resets, first articulated seat 15 drives hinge bar 16 and resets, hinge bar 16 drives the articulated seat 17 of second and resets, the articulated seat 17 of second drives connecting strip 18 and resets, connecting strip 18 drives rubber strip 19 and sprue 20 and resets, sprue 20 leaves sieve mesh 2, can remove the shutoff to sieve mesh 2.

This scheme design support bar 5, threaded rod 8, screw seat 12, first articulated seat 15, articulated rod 16, parts such as the articulated seat 17 of second, connecting strip 18, rubber strip 19 and sprue 20 carry out the shutoff to sieve mesh 2, can realize quick shutoff and remove the shutoff, but the shutoff mechanism reuse of adoption moreover, the availability factor is high.

It should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are used broadly in the present invention, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims

1. The utility model provides a reverse screen pipe of stifled temporarily of oil gas well, includes the screen pipe body, its characterized in that: the lower end of the sieve tube body is connected with a joint through threads, the upper end of the sieve tube body is provided with a supporting strip, a threaded rod is rotationally connected in the supporting bar, the upper end of the threaded rod is fixedly connected with a turntable, the lower end of the rotary disc is contacted with the upper end of the supporting bar, the upper end of the rotary disc is fixedly connected with a handle, the outer side of the threaded rod is connected with a threaded seat through threads, the outer side of the threaded seat is fixedly connected with a supporting rod, the upper end of the supporting rod is fixedly connected with a limiting rod, the surface of the threaded seat is fixedly connected with a first hinging seat, the first hinge seat is hinged with a hinge rod, the right end of the hinge rod is hinged with a second hinge seat, the right-hand member of the articulated seat of second articulates there is the connecting strip, the right-hand member of connecting strip has the rubber strip through the glue bonding, the right-hand member of rubber strip is provided with the sprue, rubber strip and sprue formula structure as an organic whole.

2. The oil and gas well temporary plugging reverse screen pipe of claim 1, wherein: sieve holes are formed in the side wall of the sieve tube body and longitudinally distributed in the side wall of the sieve tube body, and plugging blocks are clamped in the sieve holes.

3. The oil and gas well temporary plugging reverse screen pipe of claim 1, wherein: the screen pipe comprises a screen pipe body and is characterized in that the upper end of the screen pipe body is provided with two limiting grooves, the two limiting grooves are symmetrically distributed at the upper end of the screen pipe body, and supporting bars are clamped in the limiting grooves.

4. The oil and gas well temporary plugging reverse screen pipe of claim 1, wherein: the through-hole has been seted up to the middle part card of support bar, the through-hole internal rotation is connected with the threaded rod, the outside fixedly connected with spacing ring of threaded rod, the upper end of spacing ring and the lower extreme contact of support bar.

5. The oil and gas well temporary plugging reverse screen pipe of claim 1, wherein: the guide holes are formed in the support bars, the number of the guide holes is two, and the limiting rods are connected in the guide holes in a sliding mode.

6. The oil and gas well temporary plugging reverse screen pipe of claim 1, wherein: the quantity of bracing piece is two, and the bracing piece is the symmetrical design in the left and right sides of screw thread seat, every the equal fixedly connected with gag lever post in upper end of bracing piece.