CN217300532U

CN217300532U - Special oil pipe packing device for minor overhaul of gas well

Info

Publication number: CN217300532U
Application number: CN202221029387.XU
Authority: CN
Inventors: 姚传高; 吴学强; 张智谋; 任振华
Original assignee: Xi'an Jierun Petroleum Engineering Co ltd
Current assignee: Xi'an Jierun Petroleum Engineering Co ltd
Priority date: 2022-04-29
Filing date: 2022-04-29
Publication date: 2022-08-26
Anticipated expiration: 2032-04-29

Abstract

The utility model discloses a gas well minor repair special oil pipe seals separates device, including sealed lid and the connecting seat of constructing in sealed lid bottom, the round hole has been seted up at the center on sealed lid top, and is provided with the threaded rod in the round hole internal rotation, the outer fringe face top fixed mounting of threaded rod has the hand wheel, and the outer fringe face bottom structure of threaded rod has a spacing piece, screw-thread fit installs the internal thread sleeve on the outer fringe face of threaded rod, the bottom of sealed lid is annular array and has seted up four guide ways, and is the annular array structure on the telescopic outer fringe face of internal thread and have four respectively slide the pressing mechanism who sets up in four guide ways, pressing mechanism includes the latch segment, the latch segment has constructed fixed connection in the telescopic bearing structure of internal thread towards one side of threaded rod between two parties. This special oil pipe packing device of gas well minor repair can accomplish the packing to oil pipe, can effectually avoid the grit to fall into or the oil gas spun condition appears, and the practicality is stronger.

Description

Special oil pipe packing device for minor repair of gas well

Technical Field

The utility model belongs to the technical field of the gas well minor overhaul, concretely relates to special oil pipe packing of gas well minor overhaul is put.

Background

The same applies to oil and gas wells, where a simple repair or maintenance operation is commonly referred to as a minor repair or maintenance operation. The main contents of the system comprise a sand washing pump, a paraffin removal pump, simple falling object salvage, underground pipe column or underground tool replacement, cementing, pressure measurement, water blocking, water injection well test, blending and the like. The construction team responsible for these tasks is called the minor repair team. The basic method of minor repair operation is to take out and put down an oil pipe as a means, take out the original tool in the well through the oil pipe, then carry out project construction according to the construction design, after the construction is finished in a month, put the updated tool or oil pump into a preset position in the well through the oil pipe, and restart production. The sand washing inspection pump is a typical minor repair operation.

Current oil gas well when maintaining, often need to accomplish the shutoff to oil pipe through oil pipe packing device to avoid the grit to fall into or oil gas spun circumstances takes place.

Can be because packing among the prior art separates the device, its structure is comparatively simple lower with the intensity that oil pipe is connected, is difficult to the efficient and accomplishes the separation to oil pipe, and unable effectual grit of avoiding falls into or oil gas spun condition appears, and the practicality is lower.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a special oil pipe packing of gas well minor overhaul is put to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: an oil pipe packing device special for minor repair of a gas well comprises a sealing cover and a connecting seat constructed at the bottom end of the sealing cover;

a round hole is formed in the center of the top end of the sealing cover, a threaded rod is arranged in the round hole in a rotating mode, a hand wheel is fixedly mounted at the top end of the outer edge surface of the threaded rod, a limiting piece is constructed at the bottom end of the outer edge surface of the threaded rod, and an inner screw sleeve is mounted on the outer edge surface of the threaded rod in a threaded fit mode;

the bottom end of the sealing cover is provided with four guide grooves in an annular array, and the outer edge surface of the internal thread sleeve is provided with four pressure applying mechanisms in an annular array and respectively arranged in the four guide grooves in a sliding manner;

the pressing mechanism comprises a locking block, and a pressure-bearing structure fixedly connected with the inner wire sleeve is arranged in the middle of one side of the locking block, which faces the threaded rod.

Preferably, the bottom of latch segment is constructed centrally and is had the slider, and the slider slides and sets up in the guide way.

Preferably, a through hole for the guide rod to slide is formed in the middle of one side of the sliding block, and two ends of the guide rod are fixed on two sides in the guide groove respectively.

Preferably, the pressure-bearing structure comprises a first hinge seat constructed on one side of the locking block, and a support arm is movably mounted in the first hinge seat.

Preferably, one end of the support arm, which is far away from the first hinge seat, is movably provided with a second hinge seat, and the second hinge seat is constructed on one side of the outer edge surface of the inner wire sleeve.

The utility model discloses a technological effect and advantage: according to the oil pipe packing device special for minor repair of the gas well, due to the arrangement of the threaded rod provided with the hand wheel and the inner wire sleeve provided with the four pressing mechanisms, the connecting seat cover arranged on the sealing cover is arranged at the top of the oil pipe, the hand wheel is rotated to drive the threaded rod to rotate, so that the inner wire sleeve on the threaded rod is driven to move, the four pressing mechanisms are pushed to slide in the four guide grooves respectively, the four locking blocks are abutted against the inner wall of the oil pipe, the packing of the oil pipe is completed, the condition that sand and stone fall into or oil gas is sprayed out can be effectively avoided, and the practicability is high;

benefit from a plurality of guide bars and the setting of applying pressure mechanism, when the internal thread sleeve on the threaded rod removed, will drive four bearing structure and promote four locking pieces that are constructed with the slider and remove to the messenger slides respectively on four sliders and the guide bar in four guide ways, thereby makes four locking pieces butt in oil pipe's inner wall, accomplishes the packing to oil pipe, and fixed stability is stronger, convenient to use.

Drawings

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

FIG. 2 is a schematic bottom structure of the present invention;

fig. 3 is a schematic structural diagram of the pressing mechanism of the present invention.

In the figure: 1. a sealing cover; 2. a connecting seat; 3. a threaded rod; 4. a hand wheel; 5. an internal thread sleeve; 6. a pressure applying mechanism; 601. a locking block; 602. a slider; 603. a first hinge seat; 604. a support arm; 605. a second hinge seat; 7. a guide rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1, 2 and 3, for accomplishing the packing of oil pipe to the effectual grit of avoiding falls into or oil gas spun condition appears, this special oil pipe packing device is repaiied for a short time to gas well, including sealed lid 1 and the connecting seat 2 of constructing in sealed lid 1 bottom, the round hole has been seted up at the center on sealed lid 1 top, and is provided with threaded rod 3 in the round hole internal rotation, the outer fringe face top fixed mounting of threaded rod 3 has hand wheel 4, and the outer fringe face bottom of threaded rod 3 constructs a stopper, screw-thread fit installs interior silk sleeve 5 on the outer fringe face of threaded rod 3, the bottom of sealed lid 1 is annular array and has seted up four guide ways, and is the annular array on the outer fringe face of interior silk sleeve 5 and construct four respectively to slide the pressure applying mechanism 6 that sets up in four guide ways, the mechanism 6 that exerts pressure includes latch 601, latch 601 constructs the pressure-bearing structure of fixed connection in interior silk sleeve 5 towards one side of threaded rod 3 between two parties The top of oil pipe is located through installing 2 covers of connecting seat in sealed lid 1 to it is rotatory to rotate hand wheel 4 and drive threaded rod 3, thereby interior silk sleeve 5 on the drive threaded rod 3 removes, slides in four guide ways respectively in order to promote four biasing mechanism 6, thereby makes four latch segment 601 butts in oil pipe's inner wall, thereby accomplishes the packing to oil pipe, can effectually avoid the grit to fall into or oil gas spun condition appears, and the practicality is stronger.

As shown in fig. 2 and 3, to improve the stability of the oil pipe packing, specifically, a sliding block 602 is configured in the center of the bottom end of the locking block 601, the sliding block 602 is slidably disposed in the guide groove, a through hole for the guide rod 7 to be slidably disposed is formed in the center of one side of the sliding block 602, two ends of the guide rod 7 are respectively fixed to two sides in the guide groove, the pressure-bearing structure includes a first hinge seat 603 configured on one side of the locking block 601, a support arm 604 is movably mounted in the first hinge seat 603, a second hinge seat 605 is movably mounted at one end of the support arm 604 far away from the first hinge seat 603, the second hinge seat 605 is configured on one side of the outer edge surface of the inner wire sleeve 5, when the inner wire sleeve 5 on the threaded rod 3 moves, the four pressure-bearing structures will be driven to push the four locking blocks 601 configured with the sliding blocks 602 to move, so that the four sliding blocks 602 respectively slide on the guide rods 7 in the four guide grooves, therefore, the four locking blocks 601 are abutted to the inner wall of the oil pipe to complete the packing of the oil pipe, the fixing stability is high, and the use is convenient.

The working principle is as follows: this special oil pipe packing device of gas well minor repair, during the use, through installing 2 covers of connecting seat in sealed lid 1 and locate oil pipe's top, and make sealed lid 1 butt in oil pipe's top, then rotate hand wheel 4, it is rotatory to drive threaded rod 3 through hand wheel 4, thereby the internal thread sleeve 5 on the drive threaded rod 3 removes, with four latch segments 601 that the structure has slider 602 through four bearing structure promotion remove, so that slide respectively on four slider 602 respectively with the guide bar 7 of four guide ways in, thereby make four latch segments 601 butts in oil pipe's inner wall, accomplish packing to oil pipe, avoid the grit to fall into or oil gas spun condition to appear, high durability and convenient use, and simple operation.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. An oil pipe packing device special for minor repair of a gas well comprises a sealing cover (1) and a connecting seat (2) constructed at the bottom end of the sealing cover (1);

the method is characterized in that: a round hole is formed in the center of the top end of the sealing cover (1), a threaded rod (3) is rotatably arranged in the round hole, a hand wheel (4) is fixedly mounted at the top end of the outer edge surface of the threaded rod (3), a limiting piece is constructed at the bottom end of the outer edge surface of the threaded rod (3), and an inner screw sleeve (5) is mounted on the outer edge surface of the threaded rod (3) in a threaded fit manner;

four guide grooves are formed in the bottom end of the sealing cover (1) in an annular array, and four pressure applying mechanisms (6) which are arranged in the four guide grooves in a sliding mode are formed in the outer edge surface of the inner wire sleeve (5) in an annular array;

the pressing mechanism (6) comprises a locking block (601), and a pressure-bearing structure fixedly connected to the inner wire sleeve (5) is formed in the middle of one side, facing the threaded rod (3), of the locking block (601).

2. The oil pipe packing device special for minor repair of gas well as defined in claim 1, characterized in that: the bottom of latch segment (601) is constructed centrally and is had slider (602), and slider (602) slides and sets up in the guide way.

3. The oil pipe packing device special for minor overhaul of gas well as recited in claim 2, characterized in that: one side of the sliding block (602) is provided with a through hole in the middle for the guide rod (7) to slide, and the two ends of the guide rod (7) are fixed on the two sides of the guide groove respectively.

4. The oil pipe packing device special for minor overhaul of gas well as recited in claim 1, characterized in that: the pressure-bearing structure comprises a first hinge seat (603) constructed on one side of the locking block (601), and a support arm (604) is movably mounted in the first hinge seat (603).

5. The oil pipe packing device special for minor overhaul of gas well as claimed in claim 4, wherein: one end of the support arm (604) far away from the first hinge seat (603) is movably provided with a second hinge seat (605), and the second hinge seat (605) is constructed on one side of the outer edge surface of the inner wire sleeve (5).