CN219101279U

CN219101279U - Fishing device for oil-gas well bailing

Info

Publication number: CN219101279U
Application number: CN202223391878.1U
Authority: CN
Inventors: 周静仁; 潘永江; 郑波强; 黄保黔; 万文财; 王文; 张泽丽; 粱柔; 张腾飞; 金锋; 洪德强
Original assignee: Guizhou Gaofeng Petroleum Machinery Co Ltd
Current assignee: Guizhou Gaofeng Petroleum Machinery Co Ltd
Priority date: 2022-12-16
Filing date: 2022-12-16
Publication date: 2023-05-30
Anticipated expiration: 2032-12-16

Abstract

The utility model discloses a salvaging device for oil and gas well bailing, which is formed by connecting a body (1), an upper conical guide sleeve (2), a middle guide sleeve (3), a sealing liquid filling pipe (4), a rubber sealing ring (5), a filtering seat (6), a lower conical guide sleeve (7), a lower joint (8) and milling teeth (9). When in use, the utility model is connected with a drilling tool of an oil-gas well, and can efficiently salvage sand and stones at the bottom of the oil-gas well. The utility model has the advantages of high sand-bailing efficiency, clean and thorough sand-bailing, simple structure, convenient operation, low manufacturing cost, easy implementation and the like.

Description

Fishing device for oil-gas well bailing

Technical Field

The utility model relates to a salvaging device for salvaging sand in an oil and gas well, and belongs to the technical field of salvaging sand and stones at the bottom of the oil and gas well.

Background

At present, in the production process of oil and gas wells, because oil and gas resources can flow out together with rock particles when escaping from gaps in the rock, then gather at the bottom of the well, after the rock particles increase to a certain stage, the speed of escaping oil and gas resources passing through the rock particle layer is slowed down, the yield of the oil and gas wells is seriously influenced, in some oil and gas wells with reduced oil and gas resource yield, in order to increase the yield of the oil and gas wells, fracturing the rock by using great pressure, then supporting the gaps in the rock by using propping agent in fracturing fluid, ensuring that the oil and gas resources smoothly pass through the rock gaps, and after long-time production, the propping agent and the rock particles in the fracturing fluid also influence the production of the oil and gas wells, so that well repairing operation is needed after a period of operation. When carrying out workover, can adopt the grit of basket tool salvage oil gas well shaft bottom usually, when adopting conventional basket tool to salvage, because the operation depth of putting down is darker, conventional basket work inefficiency, and the course of working is loaded down with trivial details, and most basket work only is used for the fish to salvage, and the salvage effect of salvage work for the bailing operation is unobvious, can't fully salvage the tiny junk in shaft bottom. Therefore, the existing oil and gas well sand-pumping mode is not ideal and can not meet the production requirement.

Disclosure of Invention

The utility model aims to provide a salvaging device for oil and gas well salvaging, which has the advantages of simple structure, convenient operation, low manufacturing cost and high working efficiency, and overcomes the defects of the prior art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model relates to a salvaging device for oil and gas well bailing, which comprises a body capable of being connected with a drilling tool of an oil and gas well, wherein an upper conical flow guiding sleeve, a middle flow guiding sleeve, a sealing liquid filling pipe, a filtering seat, a lower conical flow guiding sleeve and a lower connector are arranged in the body, the upper conical flow guiding sleeve is connected with the middle flow guiding sleeve and is arranged in the body, the top of the upper conical flow guiding sleeve is contacted with a plane in the body, the lower end of the middle flow guiding sleeve is contacted with a small port at the upper end of the lower conical flow guiding sleeve, a large port at the lower end of the lower conical flow guiding sleeve is contacted with the end face of a shoulder hole on the lower connector, the lower connector is connected with the body through threads, milling shoe teeth are welded at the bottom of the lower connector, the sealing liquid filling pipe is connected between the body and the middle flow guiding sleeve, the outer space of the body is mutually communicated with the inner sleeve space of the middle flow guiding sleeve through the sealing liquid filling pipe, a rubber sealing ring capable of being connected with a port of the sealing liquid filling pipe is fixed between the body and the middle flow guiding sleeve, the filtering seat is used for enabling the space between the body and the middle flow guiding sleeve to be contacted with a small port in the body, the large port at the lower end of the middle flow guiding sleeve is contacted with the small port, the large port at the lower end of the middle flow guiding sleeve is connected with the small port, the large port of the lower end of the middle water hole is connected with the small port, the large port is welded with the water hole is arranged on the water hole and water inlet water hole is arranged above water hole and water inlet, and water hole is arranged above water inlet.

In the fishing device for the oil-gas well bailing, 2-6 sealing liquid filling pipes are connected between the body and the middle guide sleeve, and the sealing liquid filling pipes are respectively fixed on the body and the middle guide sleeve according to the circumference uniform distribution.

In the fishing device for the oil-gas well bailing, the upper conical guide sleeve is welded with the middle guide sleeve.

In the salvaging device for the oil-gas well bailing, the number of the water outlet holes and the number of the water inlet holes on the body are respectively 2-10.

Due to the adoption of the technical scheme, compared with the prior art, the sand and stone particle salvaging device effectively improves the efficiency of salvaging sand and stone particles: according to the utility model, a salvaging device which is simple in structure, low in manufacturing cost and convenient to operate is added on the existing drilling tool, a relatively sealed area is formed in a well bottom area through the salvaging device, then high-pressure liquid is utilized to uniformly mix well bottom sand particles in the liquid to form mixed fluid, after the mixed fluid enters the salvaging device, sand carried in the fluid is left in the salvaging device, and the liquid flows out from the other outlet of the salvaging device; in addition, the hydraulic loss of the high-pressure liquid is effectively reduced: when the mixed fluid passes through the fishing device, sand and stone particles in the mixed fluid are collected in the fishing device, so that the hydraulic pressure head of high-pressure liquid formed by the discharged water is higher, and the upward return speed is higher. Therefore, compared with the prior art, the utility model not only has the advantage of high sand-bailing efficiency, but also has the advantages of clean and thorough sand-bailing, simple structure, convenient operation, low manufacturing cost, easy implementation and the like.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

The marks in the drawings are: 1-body, 1.1-water outlet, 1.2-water inlet, 2-upper cone diversion sleeve, 3-middle diversion sleeve, 4-sealing liquid filling pipe, 5-rubber sealing ring, 6-filter seat, 7-lower cone diversion sleeve, 8-lower joint, 9-milling shoe tooth, a-upper water outlet space and b-lower sand storage space.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples.

The utility model relates to a salvaging device for oil and gas well bailing, as shown in figure 1, which consists of a body 1, an upper conical guide sleeve 2, a middle guide sleeve 3, a sealing liquid filling pipe 4, a rubber sealing ring 5, a filtering seat 6, a lower conical guide sleeve 7, a lower joint 8 and milling teeth 9, wherein during manufacturing, the upper end of the body 1 can be connected with the existing drilling tool arranged on the oil and gas well, and the connection mode of the body and the drilling tool can be a traditional threaded connection mode or a bolt connection mode; the upper conical flow guiding sleeve 2 is welded with the middle flow guiding sleeve 3 and is installed in the body 1, the top of the upper conical flow guiding sleeve 2 is contacted with a plane in the body 1, the lower end of the middle flow guiding sleeve 3 is contacted with a small port at the upper end of the lower conical flow guiding sleeve 7, a large port at the lower end of the lower conical flow guiding sleeve 7 is contacted with the end face of a shoulder hole on the lower joint 8, the lower joint 8 is connected with the body 1 through threads, when the lower joint 8 is connected with the body 1 through threads and screwed, the upper conical flow guiding sleeve 2, the middle flow guiding sleeve 3 and the lower conical flow guiding sleeve 7 can be firmly fixed in the body 1, milling shoe teeth 9 are welded at the bottom of the lower joint 8, a sealing liquid filling pipe 4 is connected between the body 1 and the middle flow guiding sleeve 3, and the outer space of the body 1 is communicated with the inner space of the middle flow guiding sleeve 3 through the sealing liquid filling pipe 4, when the sealing liquid filling pipe 4 is installed, preferably, after the lower joint 8 is connected with the body 1 through threads and screwed, the upper conical flow guiding sleeve 2, the middle flow guiding sleeve 3 and the lower conical flow guiding sleeve 7 are firmly fixed in the body 1 through the drill, the sealing liquid filling pipe 1 is respectively, the flow guiding sleeve 3 and the liquid filling pipe is evenly distributed in the middle flow guiding sleeve 1 is fixed in the middle hole 1, and the liquid filling pipe 4 is evenly filled in the middle hole is respectively, and then is fixed in the middle flow guiding sleeve 1, and the flow guiding sleeve 4 is evenly filled with the flow guiding sleeve is evenly and filled with the liquid, and is evenly filled in the flow, and then filled in the flow, and is filled in the liquid is filled with water, and filled; the rubber sealing ring 5 is sleeved on the body 1 and connected with the port of the sealing liquid filling pipe 4, the inner side of the rubber sealing ring 5 and the outer surface of the body 1 can be connected in an adhesive mode, so that the rubber sealing ring 5 and the port of the sealing liquid filling pipe 4 can be reliably connected, the filter seat 6 is fixed between the body 1 and the middle guide sleeve 3, the space between the inside of the body 1 and the middle guide sleeve 3 can be divided into an upper water outlet space a and a lower sand storage space b by the filter seat 6, the filter seat 6 can be made of the existing filter screen material capable of filtering sand and stones, 2-10 water outlet holes 1.1 are made above the filter seat 6 on the body 1, the water outlet holes 1.1 are located above the rubber sealing ring 5, 2-10 water inlet holes 1.2 are made below the filter seat 6 on the body 1, and the water inlet holes 1.2 are located below the rubber sealing ring 5.

When the utility model is used, the fishing device is connected with the existing drilling tool arranged on an oil-gas well, the drilling tool can drive the fishing device to move, then the fishing device is placed into the oil-gas well, high-pressure liquid equipped by the drilling tool flows into the middle diversion sleeve 3 through the upper conical diversion sleeve 2 in the body 1, when the high-pressure liquid passes through the upper part of the middle diversion sleeve 3, part of the high-pressure liquid enters the rubber sealing ring 5 through the sealing liquid filling pipe 4, the rubber sealing ring 5 expands under the action of the high-pressure liquid, so that a gap between the outer surface of the body 1 and the well wall of the oil-gas well is sealed, the lower part of the fishing device and the bottom of the oil-gas well form a relative sealing environment, after the high-pressure liquid passes through the lower conical diversion sleeve 7, the crushed objects are dispersed and impacted, the crushed objects are fully mixed with the high-pressure liquid to form a mixed fluid, the mixed fluid rises to the position of the rubber sealing ring 5 under the action of the external high-pressure liquid, enters the lower sand storage space b in the body 1 through the water inlet hole 1.2 on the body 1, the mixed fluid is filtered by the filtering seat 6, the mixed fluid can continuously flow into the bottom of the oil-gas well through the sand storage hole 1 through the filtering seat, and the sand and the water well can continuously flow into the bottom of the well through the water storage hole 1 after the filtering seat.

When the sand particles falling into the lower sand storage space b are nearly filled or filled in the lower sand storage space b, or when the water quantity flowing out of the water outlet 1.1 is observed to be small, the sand particles are nearly filled or filled in the lower sand storage space b, the injection of high-pressure liquid is stopped, the salvaging device is lifted out of the oil-gas well through the drilling tool, the lower joint 8 is taken down, the sand particles in the lower sand storage space b can be cleaned after the lower conical guide sleeve 7 is taken out, the conical guide sleeve 7 and the lower joint 8 are respectively reinstalled into the body 1, and the salvaging device can be put into the oil-gas well for the next circulation of sand salvaging after the lower joint 8 is screwed.

After the sand particles in the lower sand storage space b are cleaned, if the filter seat 6 needs to be replaced, the filter seat 6 clamped between the body 1 and the middle guide sleeve 3 can be pulled out by adopting long pliers or long hook tools, and then the newly replaced filter seat 6 is sleeved on the middle guide sleeve 3 and pushed into the body 1, so that the filter seat 6 can reach the installation position after being contacted with the sealing liquid filling pipe 4, and the filter seat 6 has certain elasticity, so that the filter seat 6 can be firmly clamped between the body 1 and the middle guide sleeve 3 after reaching the installation position.

Claims

1. Fishing device for oil and gas well bailing, including body (1) that can be connected with the drilling tool of oil and gas well, its characterized in that: an upper conical flow guiding sleeve (2), an intermediate flow guiding sleeve (3), a sealing liquid filling pipe (4), a filtering seat (6), a lower conical flow guiding sleeve (7) and a lower joint (8) are arranged in the body (1), the upper conical flow guiding sleeve (2) is connected with the intermediate flow guiding sleeve (3) and is arranged in the body (1), the top of the upper conical flow guiding sleeve (2) is contacted with a plane in the body (1), the lower end of the intermediate flow guiding sleeve (3) is contacted with a small port at the upper end of the lower conical flow guiding sleeve (7), a big port at the lower end of the lower conical flow guiding sleeve (7) is contacted with a shoulder hole end face on the lower joint (8), the lower joint (8) is connected with the body (1) through threads, milling teeth (9) are welded at the bottom of the lower joint (8), the sealing liquid filling pipe (4) is connected between the body (1) and the intermediate flow guiding sleeve (3), the outer space of the body (1) is communicated with the inner space of the intermediate flow guiding sleeve (3) through the sealing pipe (4), the upper end of the body (1) is sleeved with a rubber sealing ring (4) and the sealing ring (6) can be fixedly connected with the sealing seat (3) between the sealing seat (6), the space between the inside of the body (1) and the middle guide sleeve (3) is divided into an upper water outlet space (a) and a lower sand storage space (b) by the filter seat (6), a water outlet hole (1.1) is formed in the body (1) above the filter seat (6), the water outlet hole (1.1) is located above the rubber sealing ring (5), a water inlet hole (1.2) is formed in the body (1) below the filter seat (6), and the water inlet hole (1.2) is located below the rubber sealing ring (5).

2. A fishing device for oil and gas well bailing according to claim 1, wherein: the number of the sealing liquid filling pipes (4) connected between the body (1) and the middle guide sleeve (3) is 2-6, and the sealing liquid filling pipes (4) are respectively fixed on the body (1) and the middle guide sleeve (3) according to the uniform distribution of the circumference.

3. A fishing device for oil and gas well bailing according to claim 1, wherein: the upper conical flow guiding sleeve (2) is welded with the middle flow guiding sleeve (3).

4. A fishing device for oil and gas well bailing according to claim 1, wherein: the number of the water outlet holes (1.1) and the number of the water inlet holes (1.2) on the body (1) are respectively 2-10.