CN210217657U

CN210217657U - Efficient casing cleaner

Info

Publication number: CN210217657U
Application number: CN201920779650.9U
Authority: CN
Inventors: Qing Guo; 郭庆; Hongjun Qiao; 乔红军; Xide Fu; 符喜德; Liyu Shi; 施里宇; Zhiliang Gao; 高志亮; Pan Luo; 罗攀; Jingfu Mu; 穆景福; Xiao Sun; 孙晓; Xiaobing Liang; 梁小兵; Feng Jing; 景丰
Original assignee: Shaanxi Yanchang Petroleum Group Co Ltd
Current assignee: Shaanxi Yanchang Petroleum Group Co Ltd
Priority date: 2019-05-28
Filing date: 2019-05-28
Publication date: 2020-03-31
Anticipated expiration: 2029-05-28

Abstract

The utility model relates to an oil field oil gas well borehole operation equipment, concretely relates to be used for high-efficient cleaning means of oil gas well sleeve pipe. A high-efficiency casing cleaner comprises an access joint, a centralizer, a central pipe and a plug which are sequentially connected; the access joint is connected with the cleaning pipe column; the outer wall of the central pipe is provided with a notch for liquid to flow out; the cleaning device is sleeved on the outer wall of the central tube and surrounds the outer wall of the central tube for a circle and covers the notch; the cleaning device comprises a spray head; the spray head is provided with a spray hole, and a spray nozzle is installed on the spray hole. The utility model discloses liquid produces reverse impulsive force from the high-speed blowout of nozzle and makes the shower nozzle rotate clockwise at a high speed, and high-speed jet fluid can wash away the partial adhesive substance of sleeve pipe inner wall.

Description

Efficient casing cleaner

Technical Field

The utility model relates to an oil field oil gas well borehole operation equipment, concretely relates to be used for high-efficient cleaning means of oil gas well sleeve pipe.

Background

In the drilling process, drilling fluid (especially oil-based drilling fluid) is easily attached to the inner wall of the sleeve, and the unclean sleeve increases the difficulty of the descending of downhole tools for later fracturing construction operation and also influences the perforating and fracturing effects; meanwhile, in the oil extraction process, the inner wall of the oil well casing is easy to wax and scale, and the normal production of the oil well is directly influenced if the problems are not timely treated, so that the cleaning of the casing must be considered in order to ensure the normal construction operation of the oil-gas well and the normal production of the oil well.

The common methods for cleaning the casing at present mainly comprise chemical cleaning and physical cleaning. The chemical cleaning is to carry out chemical conversion and dissolution stripping on the pollutants or the covering layer on the surface of an object by virtue of a cleaning agent so as to achieve the effects of degreasing, derusting and scaling. The physical cleaning is mainly to adopt a casing scraper to clean drilling fluid residues, paraffin, scaling and other substances on the casing wall. The method has the disadvantages that the scraper is easy to damage the casing wall, the service life of the casing is reduced, and the normal production of the oil and gas well is influenced. Aiming at some defects in the conventional casing cleaning process, a cleaning tool capable of cleaning the casing quickly and efficiently is designed.

Disclosure of Invention

The utility model discloses aim at to above-mentioned problem, provide a reasonable in design, efficient sleeve pipe cleaning means.

The technical scheme of the utility model lies in:

a high-efficiency casing cleaner comprises an access joint, a centralizer, a central pipe and a plug which are sequentially connected; the access joint is connected with the cleaning pipe column; the outer wall of the central pipe is provided with a notch for liquid to flow out; the cleaning device is sleeved on the outer wall of the central tube and surrounds the outer wall of the central tube for a circle and covers the notch; the cleaning device comprises a spray head; the spray head is provided with a spray hole, and a spray nozzle is installed on the spray hole.

And a brush is also arranged on the side wall of the spray head.

The nozzle is provided with 3 spray holes, and the 3 spray holes equally divide the circular arc 3 where the section of the central pipe is located.

And 1 nozzle is arranged on any one spray hole, namely 3 nozzles are arranged on the spray hole, and the nozzles are arranged on the same plane and respectively form an angle of 60 degrees with the X axis and an angle of 30 degrees with the Y axis.

The nozzle diameter is 8 mm.

The hairbrush is a steel wire hairbrush.

The technical effects of the utility model reside in that:

the liquid of the utility model is sprayed out from the nozzle at a high speed to generate reverse impact force to drive the spray head to rotate clockwise at a high speed, and the high-speed spraying fluid can wash away the adhered substances on the inner wall part of the sleeve; meanwhile, the nozzle rotates at a high speed to generate centrifugal force to drive the three steel wire brushes on the side wall of the nozzle to be separated from the nozzle wall and rotate at a high speed along with the nozzle, the steel wire brushes rotate at a high speed to rub the inner wall of the sleeve, and stains such as drilling fluid adhesive substances, cement, wax, dirt and the like attached to the inner wall of the sleeve are washed away, so that the aim of efficiently cleaning the sleeve is fulfilled.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a cross-sectional view of the present invention.

Fig. 3 is a left side view of the present invention.

Reference numerals: 1-access joint, 2-centralizer, 3-central tube, 4-wire brush, 5-nozzle, 6-spray orifice and 7-plug.

Detailed Description

Example 1

A high-efficiency casing cleaner comprises an access joint 1, a centralizer 2, a central pipe 3 and a plug 7 which are sequentially connected; the access joint 1 is connected with the cleaning pipe column; a notch for liquid to flow out is formed in the outer wall of the central tube 3; the cleaning device is sleeved on the outer wall of the central tube 3 and surrounds the outer wall of the central tube 3 for a circle and covers the notch; the cleaning device comprises a spray head; the nozzle is characterized in that the nozzle is provided with a spray hole 6, and the spray hole 6 is provided with a spray nozzle 5.

Example 2

On the basis of embodiment 1, the side wall of the spray head is also provided with a brush.

Example 3

On the basis of embodiment 2, the nozzle is provided with 3 spray holes 6, and the 3 spray holes 6 equally divide the circular arc 3 of the cross section of the central tube 3. And 1 nozzle 5 is arranged on any one spray hole 6, namely 3 nozzles 5 are arranged, and the nozzles 5 are arranged on the same plane and respectively form an angle of 60 degrees with the X axis and an angle of 30 degrees with the Y axis. Correspondingly, the number of the brushes is also 3. The nozzle 5 has a diameter of 8 mm. The hairbrush is a steel wire hairbrush 4.

The utility model discloses a concrete implementation process does:

the high-efficiency casing cleaner is connected with a cleaning pipe column through an access joint 1, an external cleaning vehicle supplies liquid to the cleaning pipe column, the liquid flow velocity at the position of a nozzle 5 reaches 120 plus 150m/s by controlling the injection displacement, the liquid is sprayed out from the nozzle 5 at a high speed to generate reverse impulsive force to drive a spray head to rotate clockwise at a high speed, and the high-speed jet fluid can wash away part of adhered substances on the inner wall of the casing; meanwhile, the nozzle rotates at a high speed to generate centrifugal force to drive the three steel wire brushes 4 on the side wall of the nozzle to separate from the nozzle wall and rotate at a high speed along with the nozzle, the steel wire brushes 4 rotate at a high speed to rub the inner wall of the sleeve, and stains such as drilling fluid adhesive substances, cement, wax, dirt and the like attached to the inner wall of the sleeve are washed away, so that the aim of efficiently cleaning the sleeve is fulfilled.

Claims

1. The utility model provides a high-efficient purger of sleeve pipe which characterized in that: comprises an access joint (1), a centralizer (2), a central pipe (3) and a plug (7) which are connected in sequence; the access joint (1) is connected with the cleaning pipe column; a notch for liquid to flow out is formed in the outer wall of the central tube (3); the cleaning device is sleeved on the outer wall of the central tube (3) for surrounding the outer wall of the central tube (3) for a circle and covers the notch; the cleaning device comprises a spray head; the nozzle is characterized in that the nozzle is provided with a spray hole (6), and the spray hole (6) is provided with a spray nozzle (5).

2. The high-efficiency casing cleaner according to claim 1, wherein: and a brush is also arranged on the side wall of the spray head.

3. The high-efficiency casing cleaner according to claim 2, wherein: the nozzle is provided with 3 spray holes (6), and the 3 spray holes (6) divide the arc 3 of the cross section of the central tube (3) equally.

4. The high-efficiency casing cleaner according to claim 3, wherein: any one spray hole (6) is provided with 1 spray nozzle (5), namely 3 spray nozzles (5), and the spray nozzles (5) are arranged on the same plane and respectively form an angle of 60 degrees with the X axis and an angle of 30 degrees with the Y axis.

5. The high-efficiency casing cleaner according to claim 4, wherein: the diameter of the nozzle (5) is 8 mm.

6. The high-efficiency casing cleaner according to claim 5, wherein: the hairbrush is a steel wire hairbrush (4).