Gas-lift reverse circulation well washing gas-liquid mixing tool for hydrothermal type middle-deep geothermal well

Abstract

The utility model relates to the technical field of well washing equipment, in particular to a gas-lift reverse circulation well washing gas-liquid mixing tool for a hydrothermal type middle-deep geothermal well. Comprising a drill rod connector shell, the drill rod connector shell is of a hollow tubular structure, a drill rod female buckle is arranged at the top of the drill rod connector shell, a drill rod male buckle is arranged at the bottom of the drill rod connector shell, and a floral tube is arranged in the drill rod connector shell. The device is easy to operate, well washing operation can be carried out only by installing the device on a drill rod and entering a corresponding position along with the drill rod, the construction efficiency is high, the economical efficiency is good, and the well washing quality is good. The gas lift reverse circulation well washing tool is mainly applied to the aspect of gas lift reverse circulation well washing tools.

Description

Technical Field

[0001] The utility model relates to the technical field of well washing equipment, and more specifically to a hydrothermal type medium-deep geothermal well gas lift reverse circulation well washing gas-liquid mixing tool. Background Art

[0002] The thermal reservoir of hydrothermal medium-deep geothermal wells is buried at a great depth. After well completion, the thermal reservoir is mostly contaminated by drilling fluid. In addition, the cuttings generated during the drilling process are often not completely discharged out of the well. Conventional submersible pumps and air compressors cannot directly clean deep thermal reservoirs by positive circulation well washing. Gas lift reverse circulation allows the drill to penetrate deep into the thermal reservoir for well washing. In the past, a hole was directly opened on the side wall of the drill pipe to connect the air supply pipe and the drill pipe. This method easily causes large sections of air cavitation after high-pressure air enters the drill pipe, and the mixing degree of gas and water is poor. In addition, during the drilling process, the air pipe connection is easily scratched and leaks occur. At the same time, the side hole of the drill pipe will also cause the drill pipe to be scrapped and cannot be drilled and used, resulting in waste. Utility Model Content

[0003] In order to overcome the deficiencies in the above-mentioned prior art, the utility model provides a hydrothermal medium-deep geothermal well gas lift reverse circulation well washing gas-liquid mixing tool. A flower tube is installed inside the device. After high-pressure air enters, the flower tube can break up the cavitation bubbles and fully mix the gas and liquid. The steel elbow provided at the connection between the air duct and the drill pipe can protect the air duct when the pipe is lowered. Both ends of the device can be directly connected to the drill pipe and can be reused.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0005] A hydrothermal medium-deep geothermal well gas lift reverse circulation well washing gas-liquid mixing tool comprises a drill pipe adapter housing, the drill pipe adapter housing is a hollow tubular structure, a drill pipe female buckle is arranged on the top of the drill pipe adapter housing, a drill pipe male buckle is arranged on the bottom of the drill pipe adapter housing, and a flower tube is arranged inside the drill pipe adapter housing.

[0006] The flower tube and the drill rod adapter housing both adopt a circular tube structure, and the flower tube is coaxially arranged in the drill rod adapter housing.

[0007] A plurality of round holes are arranged on the flower tube.

[0008] The inner wall of the drill rod adapter housing is connected to the outer wall of the flower tube through a connecting rod.

[0009] A groove is provided on the outer wall of the drill rod adapter housing, an air duct adapter is arranged in the groove, a through hole is provided on the groove, and the air duct adapter is connected with the gap between the drill rod adapter housing and the flower tube through the through hole.

[0010] The top of the air duct connector is provided with an air duct connector male buckle.

[0011] The drill pipe box buckle is provided with an internal thread.

[0012] The drill rod male buckle is provided with an external thread.

[0013] The upper and lower ends of the flower tube do not exceed the setting of the drill rod receiving housing.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The arrangement of the flower pipe in the drill pipe coupling housing solves the problem of poor mixing of gas and water caused by the connection of the gas lift reverse circulation well washing air duct to the drill pipe in the past; the air duct coupling arranged in the groove solves the defects of air leakage and damage to the drill pipe caused by easy scratches on the air duct connection part.

[0016] The device can be reused, thus avoiding damage to the finished drill pipe and also avoiding the waste of working time caused by damage to the air duct during the drilling process.

[0017] The invention is easy to operate and only needs to be installed on the drill pipe. The well washing operation can be carried out as the drill pipe enters the well to the corresponding position. The construction efficiency is high, the economy is good, and the well washing quality is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the internal structure of the utility model;

[0019] Figure 2 This is the front view of the utility model;

[0020] Figure 3 It is a side view of the utility model;

[0021] Figure 4 It is a top view of the utility model;

[0022] In the figure: 1 is the drill pipe coupling housing, 2 is the drill pipe female buckle, 3 is the connecting rod, 4 is the flower tube, 5 is the round hole, 6 is the air duct coupling, 7 is the air duct coupling male buckle, and 8 is the drill pipe male buckle. DETAILED DESCRIPTION

[0023] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0024] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0025] like Figures 1 to 4 As shown, a hydrothermal medium-deep geothermal well gas lift reverse circulation well washing gas-liquid mixing tool includes a drill pipe adapter housing 1, which is a hollow tubular structure, a drill pipe female buckle 2 is arranged on the top of the drill pipe adapter housing 1, a drill pipe male buckle 8 is arranged on the bottom of the drill pipe adapter housing 1, and a flower tube 4 is arranged inside the drill pipe adapter housing 1. The drill pipe adapter housing 1 is connected to the drill pipe through the drill pipe female buckle 2 and the drill pipe male buckle 8 at the upper and lower ends to form a whole, and is sent downhole after the connection is completed. The air compressor is connected to the drill pipe adapter housing 1, and the air and water are fully mixed, so that the mud and bottom rock cuttings during well completion are sucked out of the well by the flower tube.

[0026] Preferably, the flower tube 4 and the drill rod adapter housing 1 both adopt a circular tubular structure, and the flower tube 4 is coaxially arranged in the drill rod adapter housing 1 .

[0027] Preferably, a plurality of circular holes 5 are formed on the flower tube 4. The circular holes 5 are evenly distributed on the side wall of the flower tube 4. The function of the circular holes 5 is to break up the cavitation bubbles so that the air and water are fully mixed.

[0028] Preferably, the inner wall of the drill pipe adapter housing 1 is connected to the outer wall of the flower tube 4 via a connecting rod 3. Multiple groups of connecting rods 3 are arranged between the drill pipe adapter housing 1 and the flower tube 4, and the arrangement of the connecting rods 3 improves the installation stability of the flower tube 4.

[0029] Preferably, a groove is provided on the outer wall of the drill rod adapter housing 1, and an air duct adapter 6 is provided in the groove. A through hole is provided on the groove, and the air duct adapter 6 is connected to the gap between the drill rod adapter housing 1 and the flower tube 4 through the through hole. The air duct adapter 6 is connected to the air compressor, and the high-pressure air generated by the air compressor is connected to the air duct adapter 6 through the high-pressure wire pipe, and is input into the drill rod adapter housing 1 through the air duct adapter 6. The air entering the drill rod adapter housing 1 is dispersed through the flower tube 4 and mixed more fully with the water.

[0030] The air duct takeover 6 is arranged in the groove, which can protect the air duct takeover 6 from being scratched when going down the well. The air duct takeover 6 can be arranged in an arc shape, which can better protect the air duct takeover 6.

[0031] Preferably, the top of the air duct takeover 6 is provided with an air duct takeover male buckle 7. Through the air duct takeover male buckle 7, a quick connection with the air compressor pipeline can be achieved.

[0032] Preferably, an internal thread is provided in the drill rod box buckle 2. The drill rod box buckle 2 can realize a quick connection with the drill rod.

[0033] Preferably, an external thread is provided on the drill rod male buckle 8. The drill rod male buckle 8 can realize a quick connection with the drill rod.

[0034] Preferably, the upper and lower ends of the flower tube 4 do not exceed the drill rod connector housing 1.

[0035] A flower tube 4 is installed inside. After high-pressure air enters, the flower tube 4 can break up the cavitation bubbles and fully mix the gas and liquid. A steel elbow is set at the connection between the air duct adapter 6 and the drill pipe adapter housing 1. The elbow is connected with the air duct adapter 6, which can protect the air duct adapter 6 when the pipe is lowered. The two ends of this tool can be directly connected to the drill pipe and can be reused. The high-pressure air generated by the air compressor enters through the air duct adapter 6, and the flower tube 4 breaks up the cavitation bubbles. After the air and water are fully mixed, the mud and bottom rock cuttings during well drilling are sucked out of the well by the flower tube.

[0036] Only the preferred embodiments of the present invention are described in detail above, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention, and various changes should be included in the protection scope of the present invention.

Claims

1. A hydrothermal medium-deep geothermal well gas lift reverse circulation well washing gas-liquid mixing tool, characterized by: It comprises a drill rod adapter housing (1), the drill rod adapter housing (1) being a hollow tubular structure, a drill rod female buckle (2) being arranged at the top of the drill rod adapter housing (1), a drill rod male buckle (8) being arranged at the bottom of the drill rod adapter housing (1), and a flower tube (4) being arranged inside the drill rod adapter housing (1); A groove is provided on the outer wall of the drill rod adapter housing (1), an air duct adapter (6) is arranged in the groove, a through hole is provided on the groove, and the air duct adapter (6) is connected to the gap between the drill rod adapter housing (1) and the flower tube (4) through the through hole; The top of the air duct connector (6) is provided with an air duct connector male buckle (7); The drill rod box buckle (2) is provided with an internal thread; The drill rod male buckle (8) is provided with an external thread.

2. A hydrothermal medium-deep geothermal well gas lift reverse circulation well washing gas-liquid mixing tool according to claim 1, characterized in that: The flower tube (4) and the drill rod adapter housing (1) both adopt a circular tube structure, and the flower tube (4) is coaxially arranged in the drill rod adapter housing (1).

3. A hydrothermal medium-deep geothermal well gas lift reverse circulation well washing gas-liquid mixing tool according to claim 1, characterized in that: The flower tube (4) is provided with a plurality of circular holes (5).

4. A hydrothermal medium-deep geothermal well gas lift reverse circulation well washing gas-liquid mixing tool according to claim 1, characterized in that: The inner wall of the drill pipe adapter housing (1) and the outer wall of the flower tube (4) are connected via a connecting rod (3).

5. A hydrothermal medium-deep geothermal well gas lift reverse circulation well washing gas-liquid mixing tool according to claim 1, characterized in that: The upper and lower ends of the flower tube (4) do not extend beyond the drill rod connector housing (1).

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