CN218638253U

CN218638253U - Split type casing hydraulic shaping tool

Info

Publication number: CN218638253U
Application number: CN202223085870.2U
Authority: CN
Inventors: 张亚胜
Original assignee: Daqing Tianfu Underground Operation Technology Service Co ltd
Current assignee: Daqing Tianfu Underground Operation Technology Service Co ltd
Priority date: 2022-11-18
Filing date: 2022-11-18
Publication date: 2023-03-17
Anticipated expiration: 2032-11-18

Abstract

The utility model belongs to the technical field of oil field production equipment, in particular to a split casing hydraulic shaping tool, which comprises a cone shaping sleeve, a cone shaper, a connecting rod, a reset spring, an outer cylinder, an upper joint, a power piston and a limiting block; the cone reshaping sleeve consists of 4 expanding and contracting split sections and threaded connectors; the outer wall of the cone shaper is embedded with a plurality of balls, and the top of the cone shaper is provided with internal threads; the cone reshaping sleeve is in threaded connection with the bottom of the outer cylinder through a threaded connector, an upper connector is arranged at the top of the outer cylinder, the cone reshaping device is positioned in the cone reshaping sleeve and is in threaded connection with the bottom of the connecting rod, and a power piston is arranged at the top of the connecting rod; two limiting blocks which are symmetrically distributed are arranged in the outer barrel, and the reset spring is sleeved on a connecting rod between the limiting blocks and the power piston. The shaping tool can realize hydraulic shaping only by small repair equipment, shortens the well repair period, and also improves the well repair success rate and the safety factor of well repair.

Description

Split type casing hydraulic shaping tool

Technical Field

The utility model belongs to the technical field of the oil field production facility, concretely relates to split type sleeve pipe hydraulic pressure plastic instrument.

Background

In the process of developing and extracting oil, the oil-water well of the oil field can not normally produce due to improper adjustment of injection-extraction relation or deformation of a casing pipe caused by crustal stress change. In the prior art, a mechanical expander for expanding by upsetting and expanding is generally adopted, for example, patent document with application number CN200520125536.2 discloses a split expander, wherein the expander adopts a split expanding mode, but the expanding and shaping of the expander adopts mechanical power, and the expander needs to be completed by using a large-tonnage workover rig in a matching way, so that the risk coefficient is high. And the diameter is expanded by milling and milling by using a milling cone, and the large-tonnage workover rig and the rotary table are matched to complete the diameter expansion, so that the original well casing is easy to be abraded and leaked, the service life of the original well casing is shortened, and the production cost is increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a split type sleeve pipe hydraulic pressure plastic instrument, this plastic instrument only need repair equipment just can cooperate and accomplish sheathed tube hydraulic pressure plastic, not only remains former well casing wall thickness, and shortens workover cycle, has still improved the factor of safety of workover success and workover.

The utility model discloses a technical scheme do: a split type casing hydraulic shaping tool comprises a cone shaping sleeve, a cone shaper, a connecting rod, a return spring, an outer cylinder, an upper joint, a power piston and a limiting block; the cone reshaping sleeve consists of 4 expandable and contractible split parts and a threaded connector; the outer wall of the cone shaper is embedded with a plurality of balls, and the top of the cone shaper is provided with internal threads; the cone reshaping sleeve is in threaded connection with the bottom of the outer cylinder through a threaded connector, an upper connector is arranged at the top of the outer cylinder, the cone reshaping device is located in the cone reshaping sleeve and is in threaded connection with the bottom of the connecting rod, and a power piston is arranged at the top of the connecting rod; two limiting blocks which are symmetrically distributed are arranged in the outer barrel, and the reset spring is sleeved on a connecting rod between the limiting blocks and the power piston.

Furthermore, the ball embedded in the cone shaper is contacted with the inner wall of the cone shaper sleeve.

Furthermore, a sealing ring is arranged on the power piston.

Furthermore, the limiting block is positioned at the lower part of the outer cylinder.

Furthermore, the upper joint is a threaded connector.

The utility model has the advantages that: the utility model provides a split type sleeve pipe hydraulic pressure plastic instrument, this plastic instrument only need repair equipment just can cooperate the sheathed tube hydraulic pressure plastic of accomplishing, not only remain original well casing wall thickness, and shorten workover cycle, still improved the factor of safety of workover success and workover, high-efficient safety.

Drawings

FIG. 1 is a schematic structural diagram of the first embodiment;

FIG. 2 is a schematic view of a cone reshaping sleeve according to an embodiment;

FIG. 3 isbase:Sub>A cross-sectional view A-A of FIG. 2;

FIG. 4 is a left side view of FIG. 2;

FIG. 5 is a schematic structural diagram of a cone shaper in accordance with one embodiment.

Detailed Description

Example one

Referring to the figures, the hydraulic reshaping tool for the split type casing comprises a cone reshaping sleeve 1, a cone reshaping device 2, a connecting rod 3, a return spring 4, an outer cylinder 5, an upper joint 6, a power piston 7 and a limiting block 8; the cone reshaping sleeve 1 consists of 4 expandable and contractible segments 11 and a threaded connector 12; the outer wall of the cone shaper 2 is embedded with a plurality of balls 21, and the top of the cone shaper is provided with internal threads; the cone reshaping sleeve 1 is in threaded connection with the bottom of the outer cylinder 5 through a threaded connector 12, an upper connector 6 is arranged at the top of the outer cylinder 5, the cone shaper 2 is positioned in the cone reshaping sleeve 1, the cone shaper 2 is in threaded connection with the bottom of the connecting rod 3, and a power piston 7 is arranged at the top of the connecting rod 3; two limiting blocks 8 are symmetrically distributed in the outer cylinder 5, and the return spring 4 is sleeved on the connecting rod 3 between the limiting blocks 8 and the power piston 7; the ball 21 embedded on the cone shaper 2 is contacted with the inner wall of the cone shaper sleeve 1; a sealing ring is arranged on the power piston 7; the limiting block 8 is positioned at the lower part of the outer cylinder 5; the upper joint 6 is a threaded joint.

A split casing hydraulic shaping tool is connected through an oil pipe and is lowered to the upper end of a casing deformation point, an oil pipe anchor is connected to the shaping tool, a ground pump truck is started to pressurize the oil pipe, a power piston and a cone-shaped shaper are pushed to move downwards by liquid pressurization, and the deformed casing is restored to the original shape after 4 split parts of the cone-shaped shaping sleeve are expanded. And after the stroke of the power piston is finished, the pump is stopped for pressure relief, the power piston returns to the stroke starting end under the action of the return spring and then performs the next sleeve shaping, and the ball is favorable for the descending and the recovery of the cone shaper. The method not only keeps the wall thickness of the original well casing, but also shortens the well repairing period, improves the well repairing success rate and the safety factor of well repairing, and is efficient and safe.

Claims

1. The utility model provides a split type sleeve pipe hydraulic pressure plastic instrument which characterized in that: the shaping tool comprises a cone shaping sleeve (1), a cone shaper (2), a connecting rod (3), a return spring (4), an outer cylinder (5), an upper joint (6), a power piston (7) and a limiting block (8); the cone reshaping sleeve (1) consists of 4 expanding and contracting split parts (11) and a threaded connector (12); the outer wall of the cone shaper (2) is embedded with a plurality of balls (21), and the top of the cone shaper is provided with internal threads; the cone reshaping sleeve (1) is in threaded connection with the bottom of the outer cylinder (5) through a threaded connector (12), an upper connector (6) is arranged at the top of the outer cylinder (5), the cone shaper (2) is located in the cone reshaping sleeve (1), the cone shaper (2) is in threaded connection with the bottom of the connecting rod (3), and a power piston (7) is arranged at the top of the connecting rod (3); two limiting blocks (8) which are symmetrically distributed are arranged in the outer barrel (5), and the reset spring (4) is sleeved on the connecting rod (3) between the limiting blocks (8) and the power piston (7).

2. The split sleeve hydraulic truing tool of claim 1, wherein: and the ball (21) embedded on the cone shaper (2) is contacted with the inner wall of the cone shaper sleeve (1).

3. The split sleeve hydraulic truing tool of claim 1, wherein: and a sealing ring is arranged on the power piston (7).

4. The split sleeve hydraulic truing tool of claim 1, wherein: the limiting block (8) is positioned at the lower part of the outer barrel (5).

5. The split sleeve hydraulic truing tool of claim 1, wherein: the upper joint (6) is a threaded connector.