Underground pump type sand fishing tool for oil and gas well

Abstract

The utility model provides an oil and gas well downhole pump type sand bailing tool, which relates to the technical field of pump type sand bailing and comprises a sand bailing nozzle, a sand inlet of the sand bailing nozzle is provided with an adjustable sand inlet movable plate, and one end of the sand inlet movable plate is fixedly provided with a sealing rubber sleeve for sealing and protecting the sand inlet movable plate. And the sand feeding movable plate is in signal connection with a main control unit for automatic control. The sand bailing nozzle has the advantages that the particulate matter sensor capable of detecting the sand bailing efficiency is arranged in the sand bailing nozzle, the sand bailing efficiency is judged according to data detected by the particulate matter sensor, and the sand inlet movable plate is controlled to move according to the detected data; the size of the inlet end of the bailing nozzle is adjusted through the position change of the sand inlet movable plate, particles blocked by the bailing nozzle are conveniently removed, the bailing nozzle is prevented from being blocked in the working process, the bailing efficiency of the bailing nozzle can be effectively adjusted, stable movement of the bailing tool is guaranteed, and the use convenience of the bailing tool is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pump-type sand bailing, in particular to a downhole pump-type sand bailing tool for an oil and gas well. Background Art

[0002] Oil and gas wells, also known as "production wells," are holes drilled into the ground according to a specific well layout system specifically for extracting underground oil or natural gas. They can also be converted from other wells for oil or gas production. Casing is typically run through the well, and cement is injected between the outer casing and the wellbore to maintain the wellbore, seal the aquifer, and isolate different oil layers. Oil and gas pipes are also run through the casing. Wells used for oil production are called "oil wells," while those used for natural gas production are called "natural gas wells" or "gas wells." Sand production is a common occurrence during oil and gas well production, and bailing tools are often used to remove the sand. Commonly used bailing tools include valve bailing tools, pump bailing tools, and vacuum bailing tools. Pump bailing tools use a piston-driven suction principle to draw granular material from the wellbore and then expel it.

[0003] However, in the process of sucking particles, the existing pump-type sand bailing barrel may easily cause the particles to get stuck with each other in the sand bailing tool due to the irregularity of the particles, thereby affecting the efficiency of sand bailing. Utility Model Content

[0004] Therefore, the purpose of the present invention is to provide a downhole pump-type sand bailing tool for oil and gas wells to solve the problems mentioned in the background technology and overcome the shortcomings of the existing technology.

[0005] In order to achieve the above-mentioned objectives, an embodiment of one aspect of the present invention provides a downhole pump-type sand bailing tool for an oil and gas well, comprising a sand bailing spout placed downhole in the oil and gas well, a sand bailing pipe for transporting particulate matter fixedly installed at one end of the sand bailing spout, a sand bailing pump for providing sand bailing power fixedly installed at the end of the sand bailing pipe away from the sand bailing spout, an adjustable sand inlet movable plate provided at the sand inlet port of the sand bailing spout, a sealing rubber sleeve for sealing and protecting the sand inlet movable plate fixedly installed at one end of the sand inlet movable plate, a signal of the sand inlet movable plate is connected to a main control unit for automatic control, a signal of the main control unit is connected to a particulate matter sensor, a flip guide plate for guiding particulate matter is provided on one side of the particulate matter sensor, a protective sleeve made of elastic metal material is fitted on the surface of the flip guide plate, and a limit card for limiting the flip guide plate is provided on one side.

[0006] Preferably, any of the above schemes is provided with a connecting seat for connecting to a sand bailing pipe at one end of the sand bailing pump, the sand bailing pump and the sand bailing pipe are fixedly installed by bolts and nuts, the sand bailing pipe penetrates into the oil and gas well and is located underground in the oil and gas well, and the inlet end of the sand bailing nozzle is provided with a movable groove for supporting and guiding the sand inlet movable plate.

[0007] The above technical solution is adopted: the stable connection between the sand bailing pump and the sand bailing pipe is ensured by a connecting seat, and fixed installation is carried out using bolts and nuts to enhance the reliability of the connection between the two. The sand bailing pipe is inserted deep into the oil and gas well, so that the sand bailing pipe drives the sand bailing nozzle to perform sand bailing operations. At the same time, the movable groove design at the inlet end of the sand bailing nozzle provides support and guidance for the sand feeding movable plate, ensuring a smooth and controllable sand feeding process.

[0008] Preferably, any of the above schemes is that the sand-feeding movable plate includes an electric telescopic rod connected to the main control unit signal and a movable limit baffle, the electric telescopic rod is fixedly installed inside the sand bailing spout, and one end of the electric telescopic rod is fixedly installed with a movable limit baffle at the inlet end of the sand bailing spout.

[0009] The above technical solution is adopted: the electric telescopic rod drives the limit baffle to move inside the sand bailing spout under the control of the main control unit. The limit baffle is adjusted in position through the telescopic action of the electric telescopic rod, which can realize the control and adjustment of the sand feeding activity. When the sand bailing spout is stuck, the size of the sand fed is adjusted to ensure the stability and effectiveness of the sand bailing operation.

[0010] Preferably, any of the above schemes is that the sealing rubber sleeve is fixedly mounted on the top of the limit baffle, one end of the sealing rubber sleeve away from the limit baffle is fixedly mounted on the sand bailing spout, and the sealing rubber sleeve is located on one side of the electric telescopic rod.

[0011] The above technical solution ensures the sealing between the limit baffle and the sand bailing spout through the sealing rubber sleeve, avoids the limit baffle from being stuck during the movement, and ensures the stability of the limit baffle movement.

[0012] Preferably, any of the above schemes is that the particle sensor is fixedly installed inside the sand bailing spout, the particle sensor is located on one side of the flip guide plate, the limit card is fixedly installed inside the sand bailing spout, and the limit card is symmetrically distributed on both sides of the flip guide plate.

[0013] The above technical solution is adopted: the particle sensor can monitor the particle situation inside the sand bailing spout in real time and monitor the sand bailing flow rate. When the detection data of the particle sensor changes, the sand bailing spout is blocked, reducing the efficiency of sand bailing. The electric telescopic rod is controlled according to the detection data of the particle sensor, wherein the limit card platform provides limit support for the flip guide plate to guide the movement of the flip guide plate.

[0014] Preferably, from any of the above schemes, the flip guide plate includes a flip torsion spring for providing power and a particle guide plate for flip adjustment, the flip torsion spring is fixedly installed inside the sand bailing spout, and one end of the flip torsion spring is fixedly installed with a particle guide plate rotatably connected to the sand bailing spout.

[0015] The above technical solution is adopted: during the sand bailing process, the particle guide plate will flip over due to squeezing and collision. The flipping of the particle guide plate drives the flipping torsion spring to twist so that it provides power for the particle guide plate. The rotation of the particle guide plate can guide the flow direction of the particles, thereby facilitating effective control of the flow of the particles.

[0016] Preferably, from any of the above schemes, the protective sleeve is sleeved on the surface of the particle guide plate, the limiting clamp includes a fixing screw for threaded fixing and a limiting column for blocking, the fixing screw is threadedly connected to the inside of the sand spout, and one end of the fixing screw is fixedly connected to the limiting column for limiting the particle guide plate.

[0017] The above technical solution is adopted: the surface of the particle guide plate is protected by the sleeve of the protective sleeve to prevent the particle guide plate from wear and damage, wherein the limit clamp is installed and fixed by the threaded connection of the fixed screw sand bailing nozzle, which can stably limit the particle guide plate and ensure the safety and effectiveness of the sand bailing operation.

[0018] Compared with the prior art, the advantages and beneficial effects of the present invention are as follows:

[0019] 1. A particle sensor for detecting the sand bailing efficiency is set inside the sand bailing spout. The sand bailing efficiency is judged according to the data detected by the particle sensor, and the sand inlet movable plate is controlled to move according to the detected data. The size of the inlet end of the sand bailing spout is adjusted by changing the position of the sand inlet movable plate, so as to facilitate the removal of particles stuck in the sand bailing spout and avoid the sand bailing spout being blocked during operation. The sand bailing efficiency of the sand bailing spout can be effectively adjusted, the stable movement of the sand bailing tool is ensured, and the convenience of using the sand bailing tool is improved.

[0020] 2. A flip guide plate that can rotate along with the sand bailing operation is set inside the sand bailing spout. The flip guide plate is used to guide the flow of the sand bailing operation, and a detachable limit card is used to limit the rotation of the flip guide plate, thereby ensuring the stability of the sand bailing operation guidance and facilitating the stable progress of the sand bailing operation.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0023] Figure 1 It is a structural schematic diagram according to an embodiment of the present utility model;

[0024] Figure 2This is a structural diagram of a sand feeding movable plate according to an embodiment of the utility model;

[0025] Figure 3 This is a structural diagram of a flip guide plate according to an embodiment of the present utility model;

[0026] Figure 4 This is a structural diagram of a position limiting card platform according to an embodiment of the present utility model;

[0027] Figure 5 Schematic diagram of the side cross-section structure of a sand bailing spout according to an embodiment of the present utility model;

[0028] Among them: 1-sand bailing mouth, 2-sand bailing pipe, 3-sand bailing pump, 4-sand feeding movable plate, 41-electric telescopic rod, 42-limit baffle, 5-sealing rubber sleeve, 6-particle sensor, 7-flip guide plate, 71-flip torsion spring, 72-particle guide plate, 8-protective sleeve, 9-limit card table, 91-fixing screw, 92-limit column. DETAILED DESCRIPTION

[0029] The present invention will be further described below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.

[0030] like Figure 1-5 As shown, an embodiment of the utility model is a downhole pump-type sand bailing tool for oil and gas wells, comprising a sand bailing spout 1 placed in the downhole of the oil and gas well, a sand bailing pipe 2 for transporting particulate matter fixedly installed at one end of the sand bailing spout 1, a sand bailing pump 3 for providing sand bailing power fixedly installed at the end of the sand bailing pipe 2 away from the sand bailing spout 1, the sand inlet of the sand bailing spout 1 is provided with an adjustable sand inlet movable plate 4, one end of the sand inlet movable plate 4 is fixedly provided with a sealing rubber sleeve 5 for sealing and protecting it, the signal of the sand inlet movable plate 4 is connected to a main control unit for automatic control, the signal of the main control unit is connected to a particulate matter sensor 6, a flip guide plate 7 for guiding the particulate matter is provided on one side of the particulate matter sensor 6, the surface of the flip guide plate 7 is fitted with a protective sleeve 8 made of elastic metal material, and a limit card 9 is provided on one side of the flip guide plate 7 for limiting it.

[0031] Preferably, one end of the sand bailing pump 3 is provided with a connecting seat for connecting to the sand bailing pipe 2, the sand bailing pump 3 and the sand bailing pipe 2 are fixedly installed by bolts and nuts, the sand bailing pipe 2 penetrates into the oil and gas well and is located underground in the oil and gas well, and the inlet end of the sand bailing nozzle 1 is provided with a movable groove for supporting and guiding the sand inlet movable plate 4.

[0032] The above technical solution is adopted: the stable connection between the sand bailing pump 3 and the sand bailing pipe 2 is ensured by a connecting seat, and fixed installation is carried out using bolts and nuts to enhance the reliability of the connection between the two. The sand bailing pipe 2 is inserted deep into the oil and gas well, so that the sand bailing pipe 2 drives the sand bailing spout 1 to perform sand bailing operations. At the same time, the movable groove design at the inlet end of the sand bailing spout 1 provides support and guidance for the sand feeding movable plate 4, ensuring a smooth and controllable sand feeding process.

[0033] Preferably, any of the above schemes is that the sand-feeding movable plate 4 includes an electric telescopic rod 41 connected to the main control unit signal and a movable limit baffle 42, the electric telescopic rod 41 is fixedly installed inside the sand spout 1, and one end of the electric telescopic rod 41 is fixedly installed with a limit baffle 42 that moves at the inlet end of the sand spout 1.

[0034] The above technical solution is adopted: the electric telescopic rod 41 drives the limit baffle 42 to move inside the sand bailing spout 1 under the control of the main control unit. The limit baffle 42 is adjusted in position through the telescopic action of the electric telescopic rod 41, which can realize the control and adjustment of the sand feeding activity. When the sand bailing spout 1 is stuck, the size of the sand fed is adjusted to ensure the stability and effectiveness of the sand bailing operation.

[0035] Preferably, the sealing rubber sleeve 5 is fixedly mounted on the top of the limit baffle 42 , the end of the sealing rubber sleeve 5 away from the limit baffle 42 is fixedly mounted on the sand bailing spout 1 , and the sealing rubber sleeve 5 is located on one side of the electric telescopic rod 41 .

[0036] The above technical solution ensures the sealing between the limit baffle 42 and the sand bailing spout 1 through the sealing rubber sleeve 5, thereby preventing the limit baffle 42 from being stuck during the movement and ensuring the stability of the movement of the limit baffle 42.

[0037] Preferably, any of the above schemes is that the particle sensor 6 is fixedly installed inside the sand bailing spout 1, the particle sensor 6 is located on one side of the flip guide plate 7, and the limit card platform 9 is fixedly installed inside the sand bailing spout 1, and the limit card platform 9 is symmetrically distributed on both sides of the flip guide plate 7.

[0038] The above technical solution is adopted: the particle sensor 6 can monitor the particle situation inside the sand bailing spout 1 in real time and monitor the flow rate of sand bailing. When the detection data of the particle sensor 6 changes, the sand bailing spout 1 is blocked, reducing the efficiency of sand bailing. The electric telescopic rod 41 is controlled according to the detection data of the particle sensor 6, wherein the limit card platform 9 provides limit support for the flip guide plate 7 to guide the movement of the flip guide plate 7.

[0039] Preferably, from any of the above schemes, the flip guide plate 7 includes a flip torsion spring 71 for providing power and a particle guide plate 72 for flip adjustment. The flip torsion spring 71 is fixedly installed inside the sand bailing spout 1, and one end of the flip torsion spring 71 is fixedly installed with a particle guide plate 72 rotatably connected to the sand bailing spout 1.

[0040] The above technical solution is adopted: during the sand scooping process, the particle guide plate 72 will flip over due to being squeezed and collided. The flipping of the particle guide plate 72 drives the flipping torsion spring 71 to twist so that it provides power for the particle guide plate 72, and the rotation of the particle guide plate 72 can guide the flow direction of the particles, thereby facilitating effective control of the flow of the particles.

[0041] Preferably, any of the above schemes is that the protective sleeve 8 is sleeved on the surface of the particle guide plate 72, and the limiting clamp 9 includes a fixing screw 91 for threaded fixing and a limiting column 92 for blocking, the fixing screw 91 is threadedly connected to the inside of the sand spout 1, and one end of the fixing screw 91 is fixedly connected to the limiting column 92 for limiting the particle guide plate 72.

[0042] The above technical solution is adopted: the surface of the particle guide plate 72 is protected by the sleeve of the protective sleeve 8 to prevent wear and damage of the particle guide plate 72, wherein the limit clamping platform 9 is installed and fixed by the threaded connection of the fixed screw 91 and the sand bailing nozzle 1, which can stably limit the particle guide plate 72 and ensure the safety and effectiveness of the sand bailing operation.

[0043] The utility model is a downhole pump-type sand bailing tool for oil and gas wells, and its working principle is as follows:

[0044] The sand bailing pump 3 is started to form a suction effect inside the sand bailing spout 1 through the sand bailing pipe 2, so that the particles to be sucked are sucked into the sand bailing spout 1. The particle sensor 6 detects the concentration of the sucked particles and controls the electric telescopic rod 41 to drive the limit baffle 42 to move according to the detection data, thereby increasing the size of the inlet of the sand bailing spout 1. During the suction process, the particles squeeze the protective sleeve 8, causing it to drive the particle guide plate 72 to twist and flip the torsion spring 71.

[0045] Compared with the prior art, the present invention has the following beneficial effects:

[0046] 1. A particle sensor 6 for detecting the sand bailing efficiency is provided inside the sand bailing spout 1. The sand bailing efficiency is judged based on the data detected by the particle sensor 6, and the sand inlet movable plate 4 is controlled to move based on the detected data. The size of the inlet end of the sand bailing spout 1 is adjusted by the position change of the sand inlet movable plate 4, so as to facilitate the removal of particles stuck in the sand bailing spout 1 and prevent the sand bailing spout 1 from being blocked during operation. The sand bailing efficiency of the sand bailing spout 1 can be effectively adjusted, the stable movement of the sand bailing tool can be ensured, and the convenience of using the sand bailing tool can be improved.

[0047] 2. A flip guide plate 7 that can rotate with the sand bailing operation is set inside the sand bailing spout 1. The flip guide plate 7 is used to guide the flow of the sand bailing operation, and a detachable limit clamp 9 is used to limit the rotation of the flip guide plate 7, thereby ensuring the stability of the sand bailing operation guidance and facilitating the stable progress of the sand bailing operation.

Claims

1. A downhole pump-type sand bailing tool for an oil and gas well, comprising a sand bailing nozzle (1) placed downhole in the oil and gas well, a sand bailing pipe (2) for conveying particulate matter fixedly mounted on one end of the sand bailing nozzle (1), and a sand bailing pump (3) for providing sand bailing power fixedly mounted on the end of the sand bailing pipe (2) away from the sand bailing nozzle (1), characterized in that: The sand inlet of the sand bailing spout (1) is provided with an adjustable sand inlet movable plate (4), one end of the sand inlet movable plate (4) is fixedly mounted with a sealing rubber sleeve (5) for sealing and protecting the sand inlet movable plate (4), the sand inlet movable plate (4) is signal-connected to a main control unit for automatic control, the main control unit is signal-connected to a particle sensor (6), one side of the particle sensor (6) is provided with a flip guide plate (7) for guiding the particles, the surface of the flip guide plate (7) is fitted with a protective sleeve (8) made of elastic metal material, and one side of the flip guide plate (7) is provided with a limit card (9) for limiting the flip guide plate (7).

2. A downhole pump-type sand bailing tool for oil and gas wells according to claim 1, characterized in that: One end of the sand bailing pump (3) is provided with a connection seat for connecting to a sand bailing pipe (2); the sand bailing pump (3) and the sand bailing pipe (2) are fixedly installed by bolts and nuts; the sand bailing pipe (2) penetrates into the oil and gas well and is located underground in the oil and gas well; the inlet end of the sand bailing nozzle (1) is provided with a movable groove for supporting and guiding the sand inlet movable plate (4).

3. A downhole pump-type sand bailing tool for oil and gas wells according to claim 2, characterized in that: The sand feeding movable plate (4) comprises an electric telescopic rod (41) connected to a main control unit signal and a movable limit baffle (42); the electric telescopic rod (41) is fixedly mounted inside the sand bailing spout (1); and one end of the electric telescopic rod (41) is fixedly mounted with a movable limit baffle (42) at the inlet end of the sand bailing spout (1).

4. A downhole pump-type sand bailing tool for oil and gas wells according to claim 3, characterized in that: The sealing rubber sleeve (5) is fixedly mounted on the top of the limiting baffle (42), and one end of the sealing rubber sleeve (5) away from the limiting baffle (42) is fixedly mounted on the sand bailing spout (1). The sealing rubber sleeve (5) is located on one side of the electric telescopic rod (41).

5. A downhole pump-type sand bailing tool for oil and gas wells according to claim 4, characterized in that: The particle sensor (6) is fixedly installed inside the sand bailing spout (1), and the particle sensor (6) is located on one side of the flip guide plate (7). The limit clamping platform (9) is fixedly installed inside the sand bailing spout (1), and the limit clamping platform (9) is symmetrically distributed on both sides of the flip guide plate (7).

6. A downhole pump-type sand bailing tool for oil and gas wells according to claim 5, characterized in that: The flip guide plate (7) comprises a flip torsion spring (71) for providing power and a particle guide plate (72) for performing flip adjustment. The flip torsion spring (71) is fixedly mounted inside the sand bailing spout (1). One end of the flip torsion spring (71) is fixedly mounted with a particle guide plate (72) rotatably connected to the sand bailing spout (1).

7. A downhole pump-type sand bailing tool for oil and gas wells according to claim 6, characterized in that: The protective sleeve (8) is sleeved on the surface of the particle guide plate (72), and the limiting clamping platform (9) includes a fixing screw (91) for threaded fixing and a limiting column (92) for blocking. The fixing screw (91) is threadedly connected to the inside of the sand bailing spout (1), and one end of the fixing screw (91) is fixedly connected to the limiting column (92) for limiting the particle guide plate (72).

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