CN219365988U - Novel combined type shaft repairing device - Google Patents

Abstract

The utility model relates to the technical field of wellbore repairing, in particular to a novel combined wellbore repairing device. The device comprises a liquid inlet part, a diameter expansion part and a lower connector, wherein the liquid inlet part and the lower connector are connected through threads, the diameter expansion part comprises a middle resolution non-split diameter expansion cylinder and a lower resolution non-split diameter expansion cylinder, and the middle resolution non-split diameter expansion cylinder and the lower resolution non-split diameter expansion cylinder are both arranged on the periphery of the liquid inlet part. The utility model adopts the preset expansion cone expansion shaping repair technology, firstly, the combined type shaft repair device is put into a deformed shaft, the preset cone pipe of the combined type shaft repair device is pushed downwards by hydraulic pressurization, so that the diameter expansion cylinder of the combined type shaft repair device can realize outward uniform expansion, the inner wall of a sleeve is expanded in a expanding way, the circumferential stress of the sleeve is uniform, the diameter of the diameter expansion cylinder of the combined type shaft repair device is automatically increased to a preset size, the sleeve is thoroughly restored to the original drift diameter step by step, the sleeve is less damaged, the wall thickness is not thinned, and the strength of the restored sleeve is basically restored.

Description

Novel combined type shaft repairing device

Technical Field

The utility model relates to the technical field of wellbore repairing, in particular to a novel combined wellbore repairing device.

Background

With the extension of oil field development time, especially to the middle and later stages of oil field development, the damage of the underground sleeve of an oil-water well is more and more serious, and the number of casing fault wells is more and more, which becomes a serious problem commonly existing in various oil fields, especially a thick oil thermal recovery well. The casing is damaged, so that the oil-water well cannot be produced normally, the underground operation is difficult to enclose and even cannot be performed, the service life of the oil-water well is directly reduced, and the perfection and final recovery ratio of an oilfield development well pattern are affected.

The existing sleeve shaping technology is to mechanically or chemically perform impact extrusion expansion, rolling extrusion and high-energy gas expansion, resetting and repairing on the deformed part of the sleeve, so that the sleeve at the deformed part or the sleeve at the dislocation part can recover the original radial dimension and the diameter. Aiming at the current situation of casing damage in the oil field, the practice of combining the actual situation of casing damage well and repair technology currently comprises the following 2 casing shaping technologies, namely 1, mechanical shaping technology; 2. an explosive explosion expanding method shaping technique. In the explosion shaping technology, the dosage is difficult to grasp, the wall thickness of the sleeve at the deformation part is often uneven, and the non-directionality of the explosion inevitably causes great damage to the sleeve. In mechanical shaping, the problems of casing damage, casing thickness sacrifice, difficult restoration of the original diameter, long construction period, large investment and the like generally exist in pear-shaped device expansion technology, casing milling technology, eccentric roller shaping technology, rotary jarring technology, ball shaping technology and the like.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides a novel combined wellbore repairing device, which solves the problems of high difficulty in repairing a wellbore casing and easiness in damaging the casing in the prior art.

In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model provides a novel combination formula pit shaft restorer, includes feed liquor portion, expanded diameter portion and lower joint, feed liquor portion and lower joint pass through threaded connection, expanded diameter portion is including well resolution not components of a whole that can function independently expanded diameter section of thick bamboo and lower resolution not components of a whole that can function independently expanded diameter section of thick bamboo, well resolution not components of a whole that can function independently expanded diameter section of thick bamboo and lower resolution not components of a whole that can function independently expanded diameter section of thick bamboo all set up in the periphery of feed liquor portion.

Further, the liquid inlet part comprises an upper connector, an upper middle core pipe and a lower middle core pipe, wherein the upper connector is positioned above the upper middle core pipe and is in threaded connection with the upper middle core pipe, a middle resolution non-split expanding cylinder is sleeved on the periphery of the upper middle core pipe, two ends of the middle resolution non-split expanding cylinder are connected with the middle core pipe through threads, the lower middle core pipe is arranged below the upper middle core pipe, and the lower middle core pipe is in threaded connection with the lower connector.

Further, the lower middle core tube is provided with a bulge, the lower resolution non-split diameter-expanding cylinder is clamped on the periphery of the lower middle core tube, and the lower middle core tube is sleeved with a reset spring.

Further, the top end of the lower resolution undivided expanding cylinder is fixedly connected with a first connecting cylinder, one end of the first connecting cylinder, which is far away from the resolution undivided expanding cylinder, is fixedly connected with a sliding cylinder, the cylinder diameter of the first connecting cylinder is larger than that of the upper port of the resolution undivided expanding cylinder, the inner diameter of the sliding cylinder is the same as that of the upper port of the resolution undivided expanding cylinder, the reset spring and the bulge are both positioned in the first connecting cylinder, and the reset spring is positioned under the bulge.

Further, the upper middle core pipe and the lower middle core pipe are connected through a second connecting cylinder, the pipe diameter of the upper middle core pipe is smaller than that of the lower middle core pipe, and a certain interval is reserved between the second connecting cylinder and the sliding cylinder.

Further, the middle resolution undivided expanding cylinder and the lower resolution undivided expanding cylinder are conical cylinders, and the maximum cylinder diameter of the middle resolution undivided expanding cylinder is larger than that of the lower resolution undivided expanding cylinder

Compared with the prior art, the utility model has the beneficial effects that: the utility model adopts the preset expansion cone expansion shaping repair technology, firstly, the combined type shaft repair device is put into a deformed shaft, the preset cone pipe of the combined type shaft repair device is pushed downwards by hydraulic pressurization, the expansion cylinder of the combined type shaft repair device is expanded outwards uniformly, the inner wall of the sleeve is expanded in a supporting way, the circumferential stress of the sleeve is relatively uniform, the diameters of the split expansion pipe and the lower split expansion cylinder of the combined type shaft repair device are automatically increased to preset sizes, the sleeve is thoroughly restored to the original drift diameter step by step, the damage to the sleeve is small, the wall thickness is not thinned, and the strength of the original sleeve is basically restored.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

fig. 2 is an enlarged view of the structure at a of the present utility model.

In the figure, 1, an upper joint; 2. a lower joint; 3. middle resolution non-split expanding cylinder; 4. the lower resolution is not split and expanded; 5. an upper middle core tube; 6. a lower central tube; 7. a protrusion; 8. a return spring; 9. a first connecting cylinder; 10. a sliding cylinder; 11. and a second connecting cylinder.

Detailed Description

The following are specific embodiments of the present utility model, and the technical solutions of the present utility model are further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.

As shown in fig. 1, the utility model provides a novel combined wellbore repairing device, which comprises an upper joint 1, a liquid inlet part, a diameter expanding part and a lower joint 2, wherein one end of the liquid inlet part is in threaded connection with the upper joint 1, the other end of the liquid inlet part is in threaded connection with the lower joint 2, the diameter expanding part comprises a middle resolution undivided diameter expanding cylinder 3 and a lower resolution undivided diameter expanding cylinder 4, and the middle resolution undivided diameter expanding cylinder 3 and the lower resolution undivided diameter expanding cylinder 4 are arranged on the periphery of the liquid inlet part.

As shown in fig. 1, by injecting liquid into the liquid inlet part, the pressure of the power liquid is converted into axial force and mechanical thrust to push the deformation parts of the expansion sleeve of the middle-resolution non-split expansion cylinder 3 and the lower-resolution non-split expansion cylinder 4 to restore.

The liquid inlet part comprises an upper middle core pipe 5 and a lower middle core pipe 6, the upper joint 1 is positioned above the upper middle core pipe 5 and is in threaded connection with the upper middle core pipe 5, the middle resolution undivided expanding cylinder 3 is sleeved on the periphery of the upper middle core pipe 5, two ends of the middle resolution undivided expanding cylinder 3 are connected with the lower middle core pipe 6 through threads, the lower middle core pipe 6 is arranged below the upper middle core pipe 5, and the lower middle core pipe 6 is in threaded connection with the lower joint 2.

As shown in fig. 1, in the structure in which the upper central tube 5 and the lower central tube 6 are communicated, the power fluid is injected into the upper central tube 5 and the lower central tube 6, the upper central tube 5 and the lower central tube 6 are uniformly expanded outwards, the middle resolution undivided expanding cylinder 3 and the lower resolution undivided expanding cylinder 4 are caused to uniformly expand outwards, and the deformed part of the expansion sleeve is extruded to restore the same.

The lower core tube 6 is provided with a bulge 7, the lower resolution non-split expanding cylinder 4 is clamped on the periphery of the lower core tube 6, and the lower core tube 6 is sleeved with a reset spring 8. The top rigid coupling of distinguishing the non-split expanded diameter section of thick bamboo down 4 has first connecting cylinder 9, and the one end rigid coupling that first connecting cylinder 9 kept away from distinguishing the non-split expanded diameter section of thick bamboo down 4 has slide cylinder 10, and the barrel diameter of first connecting cylinder 9 is greater than the barrel diameter of distinguishing the upper port of non-split expanded diameter section of thick bamboo down 4, and slide cylinder 10's internal diameter is the same with the barrel diameter of distinguishing the upper port of non-split expanded diameter section of thick bamboo down 4, reset spring 8 and protruding 7 all are located first connecting cylinder 9, and reset spring 8 is located under protruding 7.

As shown in fig. 1 and 2, the liquid is injected into the lower middle core tube 6, the hydraulic force can uniformly spread around the lower middle core tube 6 and the upper and lower ends, when the hydraulic force spreads around, the lower resolution non-split expanding tube 4 uniformly expands, when the hydraulic force spreads downwards, the lower resolution non-split expanding tube 4 can move downwards along the lower middle core tube 6, the sliding tube 10 can slide on the outer wall of the lower middle core tube 6, the sliding distance of the sliding tube 10 is limited by the bulge 7, the diameter of a deformed part of the sleeve is expanded, the lower resolution non-split expanding tube 4 is reset under the action of the reset spring 8, and when the hydraulic force spreads upwards, the hydraulic force is born by the hydraulic anchor body righting device.

The upper middle core pipe 5 and the lower middle core pipe 6 are connected through a second connecting cylinder 11, the pipe diameter of the upper middle core pipe 5 is smaller than that of the lower middle core pipe 6, and the second connecting cylinder 11 and the sliding cylinder 10 are spaced at a certain interval. The middle resolution non-split expanding cylinder 3 and the lower resolution non-split expanding cylinder 4 are conical cylinders, and the maximum cylinder diameter of the middle resolution non-split expanding cylinder 3 is larger than that of the lower resolution non-split expanding cylinder 4.

As shown in fig. 1, the pipe diameter of the upper middle core pipe 5 is larger than the pipe diameter of the lower middle core pipe 6, the maximum pipe diameter of the middle resolution undivided expanding pipe 3 is larger than the maximum pipe diameter of the lower resolution undivided expanding pipe 4, namely, when the pipe diameter is expanded towards a deformed part, the diameters of the middle resolution undivided expanding pipe 3 and the lower resolution undivided expanding pipe 4 automatically increase to preset sizes, the deformed part is expanded by the lower resolution undivided expanding pipe 4 firstly, and in the process of downward movement of the lower resolution undivided expanding pipe 4, the middle resolution undivided expanding pipe 3 expands the expanded part of the lower resolution undivided expanding pipe 4 again, so that the sleeve is thoroughly restored to the original drift diameter step by step.

When the hydraulic anchor body centering device works, the combined well bore repairing device, the multi-stage hydraulic pressurizer and the hydraulic anchor body centering device are connected in sequence, the hydraulic anchor body centering device and the hydraulic anchor body centering device are well connected and lowered to the top of a deformed well section of the sleeve, the hydraulic anchor body centering device and the hydraulic anchor body centering device are pressed into the oil pipe through the ground pump truck, and reverse thrust of the hydraulic pressurizer is borne by the hydraulic anchor body centering device and the oil pipe. The full pressure drives the slips of the hydraulic anchor body centering device to prop open and anchor on the casing pipe at the same time when the hydraulic anchor body centering device is pressed into the oil pipe, and the pressure is larger as Gao Maoding. The multistage hydraulic pressurizer connected to the combined well bore repairing device converts the pressure of the power fluid into axial force and mechanical thrust to push the deformed part (action principle and pear-shaped head expanding device) of the extruded sleeve of the combined well bore repairing device to recover. When the multistage hydraulic pressurizer runs out of one stroke, the deformed part is repaired for one stroke length. If the deformed part is longer, the pipe needs to be lifted again after the length of one stroke is repaired, and the pipe is placed at the part which is not repaired to be compressed and expanded again until the pipe expander can smoothly pass through the deformed part.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions, without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.

Claims (6)

1. A novel combination wellbore retrieval, characterized in that: including top connection (1), feed liquor portion, expanded diameter portion and lower clutch (2), the one end and the top connection (1) of feed liquor portion pass through threaded connection, and the other end and the lower clutch (2) of feed liquor portion pass through threaded connection, expanded diameter portion is including well resolution not components of a whole that can function independently expanded diameter section of thick bamboo (3) and lower resolution not components of a whole that can function independently expanded diameter section of thick bamboo (4), well resolution not components of a whole that can function independently expanded diameter section of thick bamboo (3) and lower resolution not components of a whole that can function independently expanded diameter section of thick bamboo (4) all set up in the periphery of feed liquor portion.

2. A new combination wellbore servicing apparatus according to claim 1, wherein: the liquid inlet part comprises an upper middle core pipe (5) and a lower middle core pipe (6), the upper joint (1) is located above the upper middle core pipe (5) and is in threaded connection with the upper middle core pipe (5), the middle resolution non-split expanding cylinder (3) is sleeved on the periphery of the upper middle core pipe (5), two ends of the middle resolution non-split expanding cylinder (3) are connected with the lower middle core pipe (6) through threads, the lower middle core pipe (6) is arranged below the upper middle core pipe (5), and the lower middle core pipe (6) is in threaded connection with the lower joint (2).

3. A new combination wellbore servicing apparatus according to claim 2, wherein: the lower middle core tube (6) is provided with a bulge (7), the lower resolution non-split expanding cylinder (4) is clamped on the periphery of the lower middle core tube (6), and the lower middle core tube (6) is sleeved with a reset spring (8).

4. A new combination wellbore servicing apparatus according to claim 3, wherein: the top rigid coupling of distinguishing under not dividing the body expanded diameter section of thick bamboo (4) has first connecting cylinder (9), and the one end rigid coupling that distinguishes under not dividing the body expanded diameter section of thick bamboo (4) is kept away from to first connecting cylinder (9) has slide cylinder (10), and the tube diameter of first connecting cylinder (9) is greater than the tube diameter of distinguishing under not dividing the body expanded diameter section of thick bamboo (4) upper port, and the tube diameter of slide cylinder (10) is the same with the tube diameter of distinguishing under not dividing the body expanded diameter section of thick bamboo (4) upper port, reset spring (8) and arch (7) all are located first connecting cylinder (9), and reset spring (8) are located the below of arch (7).

5. A new combination wellbore servicing apparatus according to claim 3, wherein: the upper middle core pipe (5) and the lower middle core pipe (6) are connected through a second connecting cylinder (11), the pipe diameter of the upper middle core pipe (5) is smaller than that of the lower middle core pipe (6), and the second connecting cylinder (11) and the sliding cylinder (10) are spaced at a certain interval.

6. The novel combination wellbore retrieval of claim 4, wherein: the middle resolution non-split expanding cylinder (3) and the lower resolution non-split expanding cylinder (4) are conical cylinders, and the maximum cylinder diameter of the middle resolution non-split expanding cylinder (3) is larger than that of the lower resolution non-split expanding cylinder (4).