Elastic ball suitable for water well profile control

Abstract

The elastic ball comprises an elastic ball body, a connecting piece is arranged at the top end of the elastic ball body, an adjusting piece is arranged in the bottom end of the connecting piece, an extrusion piece is arranged at the top end of the adjusting piece, and a telescopic rod is arranged in the center of the top end of the extrusion piece. A sealing plug block is arranged at the top end of the telescopic rod, a spring is arranged between the sealing plug block and the connecting piece, and a conveying assembly is arranged at the top end of the connecting piece. Through the arrangement of the adjusting piece, the extruding piece, the conveying assembly and other devices, the elastic ball can be flexibly adjusted and controlled in the using process, so that the requirements of different underground conditions are met, through the arrangement of the air pipe and the air conveying hole, the interior of the elastic ball can be conveniently inflated, it is guaranteed that inflation work is effectively conducted, and the using efficiency of the elastic ball is improved.

Description

Technical Field

[0001] The utility model relates to the field of water well profile control, in particular to an elastic ball suitable for water well profile control. Background Art

[0002] Water well profile control is a method to increase oil field production. It is usually used to enhance the area with poor production in the oil and gas reservoir after cementing. This technology promotes the development and utilization of oil fields by placing spherical viscoelastic materials in the well pipe to control the flow of water injection fluid downhole. The water well profile control elastic ball is the main tool to achieve this process. It can block the flow of water and make it unevenly distributed, thereby strengthening the resistance of the liquid phase to the oil and gas phase, increasing the water pressure gradient, and promoting the increase of the contact area between the well wall and the oil layer, so that the production capacity of the underground reservoir can be fully excavated and utilized. The design, manufacture and application of water well profile control elastic balls need to consider many factors, such as the selection of elastic materials, the determination of spherical size, the method and efficiency of loading and removal, etc.

[0003] At present, the elastic ball used in the process of water well profile control cannot be inflated during use, resulting in that when the elastic ball needs to control the underground water fluid, the expansion of the elastic ball cannot be adjusted according to the required control situation, and the control effect is relatively poor. When sealing is required, it cannot be guaranteed to be completely sealed. Therefore, an elastic ball suitable for water well profile control is proposed. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model aims to provide an elastic ball suitable for water well profile control.

[0005] The technical solution adopted by the utility model to solve its technical problems is: an elastic ball suitable for water well profile adjustment, including an elastic ball, a connecting piece is arranged at the top of the elastic ball, an adjusting piece is arranged inside the bottom end of the connecting piece, an extruding piece is arranged at the top of the adjusting piece, a telescopic rod is arranged at the center position of the top of the extruding piece, a sealing plug is arranged at the top of the telescopic rod, a spring is arranged between the sealing plug and the connecting piece, and a conveying component is arranged at the top of the connecting piece.

[0006] Furthermore, the outer wall of the elastic ball is provided with a soft rubber layer, and the elasticity of the soft rubber layer is greater than the elasticity of the elastic ball.

[0007] Furthermore, a ball is provided at the connection position between the top end of the adjusting member and the extruding member, and a groove matching the ball is provided inside the extruding member, and the extruding member can rotate on the outer wall of the ball.

[0008] Furthermore, a plurality of through holes are arranged around the bottom end of the connecting member.

[0009] Furthermore, the telescopic rod is composed of a sleeve and a sliding rod, and the sliding rod can slide inside the sleeve.

[0010] Furthermore, the conveying component includes a connecting pipe, which is arranged on the outer wall of the top end of the connecting piece, and an air pipe is arranged at the center position of the top end of the connecting piece.

[0011] Furthermore, a threaded hole for connecting an air pipe is provided at the top end of the connecting piece, and an air delivery hole is provided at the bottom end of the threaded hole.

[0012] The beneficial effects of the utility model are as follows: the utility model provides an elastic ball adapted to the profile adjustment of a water well:

[0013] 1. The elastic ball is provided with a cavity inside, which can expand and seal during the inflation process, thereby effectively achieving a sealing effect and improving the use effect of the elastic ball in water well profile control.

[0014] 2. The setting of adjusting parts, extruding parts, transmission components and other equipment enables the elastic ball to be flexibly adjusted and controlled during use, thereby meeting the needs of different underground conditions.

[0015] 3. The setting of the air pipe and the air delivery hole facilitates the inflation of the elastic ball, ensures the effective inflation work, and improves the use efficiency of the elastic ball.

[0016] 4. The innovative design can effectively stabilize and guide the telescopic rod during the adjustment of the extrusion piece, thus improving the reliability of the entire device.

[0017] 5. The innovative sealing design of the connector realizes the reset sealing work through the pushing of the sealing plug and the spring, which not only ensures the sealing performance, but also improves the service life and stability.

[0018] Through the above design, the use efficiency and reliability of the water well profile control elastic ball can be effectively improved, providing a new and effective tool for increasing oil field production. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the utility model.

[0020] Figure 2 yes Figure 1 Detailed view of the cross-sectional connection structure of the middle connector.

[0021] Figure 3 yes Figure 1 Front view section connection structure details.

[0022] Figure 4 yes Figure 1 Top view cross-sectional connection structure details of the middle connector.

[0023] Figure 5 yes Figure 3 A magnified detail of the connection structure at position A in the middle.

[0024] Explanation of the reference numerals: 1. elastic ball, 2. connecting piece, 3. adjusting piece, 4. extruding piece, 5. telescopic rod, 6. sealing plug, 7. spring, 8. connecting pipe, 9. air pipe. DETAILED DESCRIPTION

[0025] The present invention is further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In addition, it should be understood that after reading the contents of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to the application.

[0026] See also Figure 1-Figure 5 It is a schematic diagram of the structure of the utility model, an elastic ball suitable for water well profile control, including an elastic ball 1, the interior of the elastic ball 1 is provided with a cavity, which can perform expansion and sealing work during the inflation process, and the outer wall of the elastic ball 1 is provided with a soft rubber layer, and the elasticity of the soft rubber layer is greater than the elasticity of the elastic ball 1.

[0027] A connecting piece 2 is provided at the top of the elastic ball 1, and the connecting piece 2 can be installed and disassembled from the top of the elastic ball 1 and connected by threads. An adjusting piece 3 is provided inside the bottom end of the connecting piece 2, and the adjusting piece 3 is connected to the connecting piece 2 by threads. The adjusting piece 3 can move up and down inside the bottom end of the connecting piece 2, and the adjusting piece 3 can drive the extruding piece 4 to move up and down inside the connecting piece 2 during the movement. An extruding piece 4 is provided at the top of the adjusting piece 3, and a telescopic rod 5 is provided at the top center position of the extruding piece 4. When the extruding piece 4 moves up and down, the telescopic rod 5 can be driven to extend and retract, and the spring 7 is squeezed to adjust the elastic coefficient of the spring 7. The reaction force of the spring 7 can push the sealing plug 6 upward, and the connecting piece 2 is sealed by the sealing plug 6. A sealing plug 6 is provided at the top of the telescopic rod 5, and the sealing plug 6 is used for sealing after inflation. A spring 7 is provided between the sealing plug 6 and the connecting piece 2, and a conveying assembly is provided at the top of the connecting piece 2. The conveying assembly is used to convey the elastic ball 1 and can inflate the elastic ball 1 at the same time.

[0028] It should be noted that a ball is provided at the connection position between the top of the adjusting member 3 and the extruding member 4, and a groove matching the ball is provided inside the extruding member 4. The extruding member 4 can rotate on the outer wall of the ball. Since the ball will not drive the extruding member 4 to rotate when the adjusting member 3 is rotated, it can only drive the extruding member 4 to move up and down.

[0029] It should be noted that a plurality of through holes are arranged around the bottom end of the connecting member 2 , and the gas entering the connecting member 2 will enter the elastic ball 1 through the through holes for inflation.

[0030] It should be noted that the telescopic rod 5 is composed of a sleeve and a slide rod, and the slide rod can slide inside the sleeve. The telescopic rod 5 is used for guiding and stabilizing the operation when the extrusion piece 4 is adjusted.

[0031] Specifically, the conveying component includes a connecting pipe 8, which is arranged on the top outer wall of the connecting piece 2. The connecting pipe 8 can be installed and removed from the connecting piece 2. The connecting pipe 8 is used to convey the elastic ball 1. An air pipe 9 is arranged at the top center position of the connecting piece 2. The air pipe 9 is used to convey inflation gas to the inside of the connecting piece 2. When conveying gas, the air pipe 9 can push the sealing plug 6 downward to cancel the sealing work. After the inflation is completed, the sealing plug 6 can be pushed by the reaction force of the spring 7 to reset the sealing work. A threaded hole for connecting the air pipe 9 is arranged at the top of the connecting piece 2, and a gas delivery hole is arranged at the bottom of the threaded hole.

[0032] When the utility model is in use, the adjusting member 3 is first rotated, and the adjusting member 3 rotates at the bottom end of the connecting member 2. When the adjusting member 3 rotates, the bottom end of the connecting member 2 moves upward. When the adjusting member 3 moves upward, it drives the extruding member 4 to move upward inside the connecting member 2. When the extruding member 4 moves upward, it squeezes the spring 7, thereby adjusting the elastic strength of the spring 7. During the adjustment process, the telescopic rod 5 is extended and retracted, and the reaction force of the spring 7 drives the sealing plug 6 to move upward to seal the connecting member 2. After the adjustment is completed, the connecting member 2 is installed on the top of the elastic ball 1. After the installation is completed, the connecting pipe 8 and the air pipe 9 are connected to the outside of the connecting member 2. On the wall, after the connection is completed, the elastic ball 1 is transported to the specified position through the connecting pipe 8. After moving to the specified position, the air is inflated into the interior of the connecting piece 2 through the air pipe 9. During the inflation process, the gas pushes the sealing plug 6 downward. When the sealing plug 6 moves downward, it squeezes the spring 7. After the seal is cancelled, the gas enters the interior of the connecting piece 2 and enters the interior of the elastic ball 1 through the through hole at the bottom of the connecting piece 2 to inflate the elastic ball 1. When the elastic ball 1 is inflated, it expands and seals. After the inflation is completed, the sealing plug 6 is pushed upward by the reaction force of the spring 7, so that the sealing plug 6 and the connecting piece 1 are fitted to perform sealing.

Claims

1. An elastic ball suitable for water well profile control, comprising an elastic ball (1), characterized in that: A connecting piece (2) is arranged at the top of the elastic ball (1), an adjusting piece (3) is arranged inside the bottom of the connecting piece (2), an extruding piece (4) is arranged at the top of the adjusting piece (3), a telescopic rod (5) is arranged at the center of the top of the extruding piece (4), a sealing plug (6) is arranged at the top of the telescopic rod (5), a spring (7) is arranged between the sealing plug (6) and the connecting piece (2), and a conveying assembly is arranged at the top of the connecting piece (2).

2. The elastic ball adapted for water well profile control according to claim 1, characterized in that: The outer wall of the elastic ball (1) is provided with a soft rubber layer, and the elasticity of the soft rubber layer is greater than the elasticity of the elastic ball (1).

3. The elastic ball adapted for water well profile control according to claim 1, characterized in that: A ball is provided at the connection position between the top end of the adjusting member (3) and the extruding member (4), and a groove matching the ball is provided inside the extruding member (4), and the extruding member (4) can rotate on the outer wall of the ball.

4. The elastic ball adapted for water well profile control according to claim 3, characterized in that: A plurality of through holes are arranged around the bottom end of the connecting piece (2).

5. The elastic ball adapted for water well profile control according to claim 3, characterized in that: The telescopic rod (5) consists of a sleeve and a sliding rod, and the sliding rod can slide inside the sleeve.

6. The elastic ball adapted for water well profile control according to claim 1, characterized in that: The conveying assembly comprises a connecting pipe (8), the connecting pipe (8) is arranged on the outer wall of the top end of the connecting piece (2), and an air pipe (9) is arranged at the center position of the top end of the connecting piece (2).

7. The elastic ball adapted for water well profile control according to claim 6, characterized in that: The top end of the connecting piece (2) is provided with a threaded hole for connecting the air pipe (9), and the bottom end of the threaded hole is provided with an air delivery hole.

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