Ultrasonic plug removal and augmented injection device for oil-water well

Abstract

The utility model discloses an oil-water well ultrasonic plug-removing and injection-increasing device and relates to the technical field of oil extraction. The ultrasonic blocking remover comprises an outer cylinder, an underground locator and an ultrasonic transducer are installed on the upper portion of the outer cylinder, the lower portion of the outer cylinder is in threaded connection with a lower connector, a capsule is installed in the space, below the ultrasonic transducer, of the outer cylinder, the small-diameter pipe section of the outer cylinder is sleeved with a graphite lining, and the outer side of the graphite lining is sleeved with a spiral impeller. The ultrasonic unblocking device has the advantages that the spiral impeller is arranged on the lower side of the ultrasonic unblocking device, the spiral impeller rotates under the action of liquid in a shaft when the ultrasonic unblocking device is tripped into the shaft, dirt on the inner wall of the shaft is cleaned up, it is guaranteed that the ultrasonic unblocking device can smoothly enter the shaft to conduct unblocking operation, and the unblocking efficiency is improved. A capsule filled with silicone oil is arranged on the lower side of the ultrasonic transducer, liquid in a shaft can be prevented from entering the ultrasonic unblocking device, and meanwhile ultrasonic waves can be effectively transmitted into the shaft.

Description

Technical Field

[0001] The utility model relates to the technical field of oil production, in particular to an ultrasonic plug removal and injection increasing device for oil and water wells. Background Technique

[0002] Plug removal technology is one of the important means in oil exploration and development, which can effectively remove the blockages in the reservoir and improve the productivity of oil wells. Ultrasonic plug removal is to lower the ultrasonic transducer string into the injection well and continuously emit high-power ultrasonic waves towards the injection formation. By using the mechanical, cavitation, thermal, and acoustic streaming effects of high-power ultrasonic waves, formation pollution and blockages are removed. The external structure of the ultrasonic plug removal and injection increasing device in the prior art is relatively simple. When the ultrasonic plug removal device enters the oil well, it may be affected by the accumulations inside the oil well and have difficulty in descending, which is not conducive to the plug removal operation and may even cause the ultrasonic plug removal device to be unable to descend. Content of the Utility Model

[0003] In order to solve the problem that the blockages inside the existing oil wells affect the plug removal operation, the utility model provides an ultrasonic plug removal and injection increasing device for oil and water wells.

[0004] The technical solution provided by the utility model is: an ultrasonic plug removal and injection increasing device for oil and water wells, including a trailer and an operation derrick. An electric control box and a winch are arranged on the trailer. The electric control box is connected to the winch by a cable. Two fixed pulleys are arranged above the wellbore on the operation derrick. The output cable of the winch enters the wellbore after changing direction through the two fixed pulleys, and the cable terminal is connected to an ultrasonic plug removal device;

[0005] The ultrasonic plug removal device includes an outer cylinder. The upper part of the outer cylinder is threadedly and hermetically connected to an upper cover. The outer layer of the cable is armored with double-layer steel wires, and the double-layer steel wires are in a left-right double helix structure. The upper cover is crimped on the cable by a hydraulic shrinker. The upper cover and the cable are connected together through a sealing ring. A downhole locator is installed on the upper part of the outer cylinder. An ultrasonic transducer is installed on the outer cylinder below the downhole locator. A small-diameter pipe section is machined on the outer circumference of the lower part of the outer cylinder. The small-diameter pipe section at the lower part of the outer cylinder is threadedly connected to a lower joint. A capsule is installed in the space below the ultrasonic transducer in the outer cylinder. The inside of the capsule is filled with silicone oil. The lower joint has a stepped hole, and the lower joint blocks the lower part of the capsule;

[0006] The small-diameter pipe section of the outer cylinder is sleeved with a graphite bushing, and a spiral impeller is sleeved outside the graphite bushing. The lower joint blocks the lower parts of the graphite bushing and the spiral impeller. The upper step of the small-diameter pipe section of the outer cylinder blocks the upper parts of the graphite bushing and the spiral impeller.

[0007] The fixed pulley located above the wellbore is suspended on the operation derrick by a steel wire rope, and a tension sensor is connected in series in the middle of the steel wire rope.

[0008] The outer diameter of the spiral impeller is slightly smaller than the inner diameter of the wellbore, and the spiral impeller is made of elastic metal.

[0009] A number of counterweight sleeves are sleeved outside the cable above the upper cover.

[0010] The beneficial effects of the utility model are as follows: a spiral impeller is arranged on the lower side of the ultrasonic plug remover. During the process of lowering the ultrasonic plug remover into the wellbore, the spiral impeller rotates under the action of the liquid in the wellbore, cleaning the dirt on the inner wall of the wellbore, ensuring that the ultrasonic plug remover can smoothly enter the wellbore for plug removal operations. A capsule filled with silicone oil is arranged on the lower side of the ultrasonic transducer, which can prevent the liquid in the wellbore from entering the ultrasonic plug remover and can effectively transmit ultrasonic waves into the wellbore. Description of the Drawings

[0011] Fig. Figure 1 is a schematic structural diagram of the utility model;

[0012] Fig. Figure 2 is a schematic structural diagram of the ultrasonic plug remover in the utility model.

[0013] In the figure, 1 - ultrasonic plug remover, 2 - working derrick, 3 - wellbore, 4 - fixed pulley, 5 - tension sensor, 6 - trailer, 7 - cable, 8 - winch, 9 - electric control box, 10 - outer cylinder, 11 - upper cover, 12 - downhole locator, 13 - ultrasonic transducer, 14 - lower joint, 15 - spiral impeller, 16 - graphite bushing, 17 - capsule, 18 - counterweight sleeve. Detailed Embodiment

[0014] As Figures 1-2 shown, an ultrasonic plug removal and injection enhancement device for oil and water wells includes a trailer 6 and a working derrick 2. An electric control box 9 and a winch 8 are arranged on the trailer 6. The electric control box 9 is connected to the winch 8 by a cable 7. Two fixed pulleys 4 are arranged above the wellbore 3 on the working derrick 2. The output cable 7 of the winch 8 enters the wellbore 3 after changing direction through the two fixed pulleys 4, and the terminal of the cable 7 is connected to the ultrasonic plug remover 1;

[0015] The ultrasonic plug remover 1 includes an outer cylinder 10. The upper part of the outer cylinder 10 is threadedly and sealedly connected to an upper cover 11. The outer layer of the cable 7 is armored with double-layer steel wires, and the double-layer steel wires are in a left-right double helix structure. The upper cover 11 is crimped on the cable 7 by a hydraulic shrinker. The upper cover 11 and the cable 7 are connected together through a sealing ring. A downhole locator 12 is installed on the upper part of the outer cylinder 10. An ultrasonic transducer 13 is installed on the outer cylinder 10 below the downhole locator 12. A small-diameter pipe section is machined on the outer circle of the lower part of the outer cylinder 10. The small-diameter pipe section at the lower part of the outer cylinder 10 is threadedly connected to a lower joint 14. A capsule 17 is installed in the space below the ultrasonic transducer 13 in the outer cylinder 10. The capsule 17 is filled with silicone oil. The lower joint 14 has a stepped hole, and the lower joint 14 blocks the lower part of the capsule 17;

[0016] The small-diameter pipe section of the outer cylinder 10 is sleeved with a graphite bushing 16. The outer side of the graphite bushing 16 is sleeved with a spiral impeller 15. The lower joint 14 blocks the lower parts of the graphite bushing 16 and the spiral impeller 15. The upper step of the small-diameter pipe section of the outer cylinder 10 blocks the upper parts of the graphite bushing 16 and the spiral impeller 15.

[0017] The fixed pulley 4 located above the wellbore 3 is suspended on the work derrick 2 by a steel wire rope. A tension sensor 5 is connected in series in the middle of the steel wire rope. When the tension sensor 5 senses a decrease in the suspended weight, it can be known that the ultrasonic plug remover 1 is blocked in the wellbore 3. After the ultrasonic plug remover 1 is lifted and then quickly dropped again, the inner wall of the wellbore 3 can be cleaned by the rapid rotation of the spiral impeller 15 before the plug removal operation is carried out.

[0018] The outer diameter of the spiral impeller 15 is slightly smaller than the inner diameter of the wellbore 3. The threaded impeller 15 is made of elastic metal to prevent the spiral impeller 15 from getting stuck in the wellbore 3.

[0019] A spiral impeller 15 is arranged on the lower side of the ultrasonic plug remover 1. During the process of the ultrasonic plug remover 1 being lowered into the wellbore 3, the spiral impeller 15 rotates under the action of the liquid in the wellbore 3, cleaning the dirt on the inner wall of the wellbore 3 to ensure that the ultrasonic plug remover 1 can smoothly enter the wellbore 3 for the plug removal operation. A silicone oil-filled capsule 17 is arranged on the lower side of the ultrasonic transducer 13, which can prevent the liquid in the wellbore 3 from entering the ultrasonic plug remover 1 and can effectively transmit ultrasonic waves into the wellbore 3.

[0020] A number of counterweight sleeves 18 are sleeved on the outer side of the cable above the upper cover 11. The number of counterweight sleeves 18 can be replaced according to the aging degree of the wellbore 3 to ensure that the weight of the ultrasonic plug remover 1 can be smoothly lowered into the wellbore 3.

Claims

1. An ultrasonic plug removal and injection enhancement device for oil and water wells, comprising a trailer (6) and a work derrick (2), characterized in that: A trailer (6) is provided with an electric control box (9) and a winch (8). The electric control box (9) is connected to the winch (8) by a cable (7). Above the wellbore (3), the working derrick (2) is provided with two fixed pulleys (4). The output cable (7) of the winch (8) enters the wellbore (3) after changing direction through the two fixed pulleys (4). The terminal of the cable (7) is connected to an ultrasonic plug remover (1). The ultrasonic plug remover (1) includes an outer cylinder (10). The upper part of the outer cylinder (10) is threadedly and hermetically connected to an upper cover (11). The outer layer of the cable (7) is armored with double-layer steel wires, and the double-layer steel wires are in a left-right double-helix structure. The upper cover (11) is crimped onto the cable (7) by a hydraulic shrinker. The upper cover (11) and the cable (7) are connected together through a sealing ring. An underground locator (12) is installed on the upper part of the outer cylinder (10). An ultrasonic transducer (13) is installed on the outer cylinder (10) below the underground locator (12). A small-diameter pipe section is machined on the outer circumference of the lower part of the outer cylinder (10). The small-diameter pipe section at the lower part of the outer cylinder (10) is threadedly connected to a lower joint (14). A capsule (17) is installed in the space below the ultrasonic transducer (13) of the outer cylinder (10). The inside of the capsule (17) is filled with silicone oil. The lower joint (14) has a stepped hole, and the lower joint (14) blocks the lower part of the capsule (17). The small-diameter pipe section of the outer cylinder (10) is sleeved with a graphite bushing (16). A spiral impeller (15) is sleeved outside the graphite bushing (16). The lower joint (14) blocks the lower parts of the graphite bushing (16) and the spiral impeller (15). The upper step of the small-diameter pipe section of the outer cylinder (10) blocks the upper parts of the graphite bushing (16) and the spiral impeller (15).

2. The ultrasonic plugging removal and injection enhancement device for oil and water wells according to claim 1, characterized in that: The fixed pulley (4) located above the wellbore (3) is suspended on the working derrick (2) by a steel wire rope. A tension sensor (5) is connected in series in the middle of the steel wire rope.

3. An ultrasonic plugging removal and injection enhancement device for oil and water wells according to claim 1, characterized in that: The outer diameter of the spiral impeller (15) is slightly smaller than the inner diameter of the wellbore (3). The spiral impeller (15) is made of elastic metal.

4. An ultrasonic plugging removal and injection enhancement device for oil and water wells according to claim 1, characterized in that: A number of counterweight sleeves (18) are sleeved outside the cable above the upper cover (11).

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