Universal produced liquid sediment radical treatment device
By designing a universal liquid silt and sand radical curing device using multifunctional spiral blades and eccentric single-flow filtrate pipes, the problem of difficulty in separating the silt and sand in oil field production wells is solved, and efficient separation of liquid, gas, sand, scale and fine mud substances is achieved, avoiding the phenomenon of silt and ensuring the stability of the equipment.
Patent Information
- Application Number
- CN202510072690.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-17
- Publication Date
- 2025-03-14
AI Technical Summary
During the production process of oil field oil production wells, pump jams are prone to occur after shutdown, especially in electric pumps and screw pump wells, where sandproof screens cannot be inserted, resulting in the pump being stuck. In addition, the harvested liquid in the well contains mud, cement or rock powder, and existing tools cannot control it to enter the pump barrel, resulting in a high pump rate.
A universal liquid silt and sand radical curing device is designed, using components such as multifunctional spiral blades, eccentric single-flow filtrate pipes and pure liquid isolation pipes. Through the high-speed rotation of the multifunctional spiral blades and the separation cavity structure of the eccentric single-flow filtrate pipes, it realizes efficient separation and automatic collection of liquid, gas, sand, scale and fine mud substances.
A separation rate of more than 99% is achieved, and the phenomenon of jamming the pump is avoided. The separated substance will no longer enter the pump cylinder. The gas is discharged through independent channels, ensuring the thoroughness of the separation effect and the stability of the equipment.
Smart Images
Figure CN119616446A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of petroleum equipment, and in particular to a universal produced fluid sediment treatment device. Background Art
[0002] In the production process of oil wells in oil fields, whether it is a pumping well, an electric pump well, or a screw pump well (including a coalbed methane liquid production well), there is a possibility of pump jam after shutdown. Even if a variety of sand-proof screens are put in, the risk of pump jam and screen blockage cannot be avoided. Especially for electric pump and screw pump wells, because it is impossible to put in sand-proof screens, the pump is often stuck when the power is off or shut down. In addition, the produced fluid in many wells contains mud, cement, or rock powder. So far, there is no tool (or method) that can control its entry into the pump barrel, and the pump jam rate is very high. Summary of the invention
[0003] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and to provide a universal produced fluid sediment treatment device, which can not only effectively separate liquid, gas, sand and scale, but also separate fine-grained muddy materials with a separation rate of more than 99%, and can also automatically collect the separated materials.
[0004] In order to solve the problems existing in the background technology, the present invention adopts the following technical scheme: including an upper joint, an outer working cylinder, a liquid suction tube, an eccentric single-flow filtrate tube, a multifunctional spiral blade, a pure liquid isolation tube and a lower joint, the outer wall of the liquid suction tube embraces the multifunctional spiral blade from top to bottom, a plurality of arc holes are arranged at equal intervals on the inner side of the multifunctional spiral blade, the multifunctional spiral blade is covered with an eccentric single-flow filtrate tube, the upper part of the eccentric single-flow filtrate tube is an open tube wall, the lower part of the eccentric single-flow filtrate tube is closed, and one side of the upper part of the multifunctional spiral blade is welded to the inner wall of the eccentric single-flow filtrate tube The other side of the upper part of the multifunctional spiral blade is an open tube wall, and a circle of the lower part of the multifunctional spiral blade is welded to the inner wall of the eccentric single-flow filtrate tube, the lower end of the eccentric single-flow filtrate tube is welded to the top of the pure liquid isolation tube, and a stabilizer is provided at the bottom of the pure liquid isolation tube. The integral outer sleeve formed by the eccentric single-flow filtrate tube and the pure liquid isolation tube is provided with an outer working cylinder, the top of the outer working cylinder is inserted into the upper joint and welded to the upper joint, the part of the upper joint inserted into the outer working cylinder is connected with the suction tube, and the bottom end of the outer working cylinder is inserted into the lower joint and welded to the lower joint; a liquid inlet hole is provided at the upper part of the outer working cylinder.
[0005] The plurality of arc-shaped holes embrace the outer wall of the liquid pipette and form a channel between the arc-shaped holes and the liquid pipette from top to bottom.
[0006] One end of the upper joint is inserted into the outer working cylinder and fixedly connected, and the other end of the upper joint is connected to the external thread of the pump cylinder through an internal thread; one end of the lower joint is inserted into the outer working cylinder and fixedly connected, and the other end of the lower joint is connected to the screen pipe thread through an external thread, and the screen pipe is connected to the sand settling tail pipe thread through a thread.
[0007] There are several liquid inlet holes, which are evenly distributed on the outer circumferential wall of the outer working cylinder; there are air outlet holes above the liquid inlet holes, and there are several air outlet holes, which are evenly distributed on the outer circumferential wall of the outer working cylinder, and the aperture of the air outlet hole is smaller than the aperture of the liquid inlet hole.
[0008] The eccentric single-flow filtrate tube is inserted into the outer working cylinder, and the open tube wall at the upper part of the eccentric single-flow filtrate tube pops open and contacts the inner wall of the outer working cylinder, causing the eccentric single-flow filtrate tube to be eccentric in the outer working cylinder, and a separation chamber is formed between the open tube wall and the inner wall of the outer working cylinder.
[0009] The centralizer is composed of a plurality of blades and is dispersed downward, and the ends of the blades are against the inner wall of the outer working cylinder.
[0010] A channel is formed between the centralizer and the inner wall of the outer working cylinder, and the channel is communicated with the sand settling tail pipe.
[0011] A current limiting plate is arranged above the centralizer, the current limiting plate is located in the pure liquid isolation tube, the current limiting plate is a steel plate, and a small hole is drilled in the center of the current limiting plate.
[0012] The lower part of the liquid pipette is provided with a plurality of liquid return holes, which are distributed not only from top to bottom but also on the outer circumferential wall of the liquid pipette.
[0013] The tail of the pipette is not provided with a multifunctional spiral blade.
[0014] The beneficial effects of the present invention are: 1. The multifunctional spiral blades used have small pitch, good centrifugal effect and thorough separation; 2. No matter how much debris and mud are separated, it will not cause the pump to get stuck; 3. The separated gas goes through its own channel and will not re-enter the liquid to form multiple separations; 4. The present invention can not only separate sand, scale and gas, but also separate fine-grained muddy materials; 5. It will work better in screw pump and electric pump wells because of fast flow rate and strong centrifugal force; 6. The present invention adopts an eccentric single-flow filtrate tube for separation. With the cooperation of the pure liquid isolation tube, the separated substances will never be sucked into the liquid pipette; 7. The use of flow limiting plates can accelerate the sinking speed of the separated substances when there is too much sediment, because the separated substances are heavier than the liquid in the pure liquid isolation tube, which can produce microcirculation and accelerate the sinking speed of sediments. 8. The invention has reasonable design and simple operation. The internal wearing parts are all made of stainless steel, which does not require disassembly and is maintenance-free for life. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the outer working cylinder of the present invention; Figure 2 It is a schematic diagram of the structure of the present invention; Figure 3 It is a partial enlarged view of the present invention; Figure 4 The eccentric single-flow filtrate tube of the present invention is a three-dimensional Figure 1 ; Figure 5 The eccentric single-flow filtrate tube of the present invention is a three-dimensional Figure 2 ; Figure 6 It is a stereoscopic diagram of the connection relationship between the eccentric single-flow filtrate tube and the outer working cylinder of the present invention; Figure 7 It is a cross-sectional view of the connection relationship between the eccentric single-flow filtrate tube and the outer working cylinder of the present invention; Figure 8 It is a schematic diagram of the structure of the centralizer of the present invention; Fig. 9 It is a schematic diagram of the structure of the current limiting sheet of the present invention; Fig.10 It is a schematic diagram of the upper joint structure of the present invention; Fig.11 It is a schematic diagram of the lower joint structure of the present invention. DETAILED DESCRIPTION
[0016] With reference to the figures, the present invention specifically adopts the following implementation mode: it includes an upper joint 1, an outer working cylinder 14, a liquid suction pipe 9, an eccentric single-flow filtrate pipe 8, a multifunctional spiral blade 7, a pure liquid isolation pipe 10 and a lower joint 5, the outer wall of the liquid suction pipe 9 embraces the multifunctional spiral blade 7 from top to bottom, a plurality of arc holes 15 are arranged at equal intervals on the inner side of the multifunctional spiral blade 7, the multifunctional spiral blade 7 is covered with an eccentric single-flow filtrate pipe 8, the upper part of the eccentric single-flow filtrate pipe 8 is an open-type pipe wall 6, and the lower part of the eccentric single-flow filtrate pipe 8 is closed, one side of the upper part of the multifunctional spiral blade 7 is welded to the inner wall of the eccentric single-flow filtrate pipe 8, and the multifunctional spiral blade The other side of the upper part of 7 is an open tube wall 6, and the lower part of the multifunctional spiral blade 7 is welded to the inner wall of the eccentric single-flow filtrate tube 8. The lower end of the eccentric single-flow filtrate tube 8 is welded to the top of the pure liquid isolation tube 10. The bottom of the pure liquid isolation tube 10 is provided with a centralizer 13. The integral outer shell formed by the eccentric single-flow filtrate tube 8 and the pure liquid isolation tube 10 is covered with an outer working cylinder 14. The top of the outer working cylinder 14 is inserted into the upper joint 1 and welded to the upper joint 1. The part of the upper joint 1 inserted into the outer working cylinder 14 is connected to the liquid suction tube 9. The bottom of the outer working cylinder 14 is inserted into the lower joint 5 and welded to the lower joint 5. The upper part of the outer working cylinder 14 is provided with a liquid inlet hole 3. The plurality of arc holes 15 surround the outer wall of the liquid suction tube 9 and form a channel between the arc holes 15 and the liquid suction tube 9 from top to bottom. One end of the upper joint 1 is inserted into the outer working cylinder 14 and fixedly connected, and the other end of the upper joint 1 is connected to the outer thread of the pump barrel through an internal thread; one end of the lower joint 5 is inserted into the outer working cylinder 14 and fixedly connected, and the other end of the lower joint 5 is connected to the screen pipe thread through an external thread, and the screen pipe is connected to the sand settling tail pipe thread through a thread. The number of the liquid inlet holes 3 is several, and the several liquid inlet holes 3 are evenly distributed on the outer circumferential wall of the outer working cylinder 14; the air outlet holes 2 are arranged above the liquid inlet holes 3, and the number of the air outlet holes 2 is several, and the several air outlet holes 2 are evenly distributed on the outer circumferential wall of the outer working cylinder 14, and the aperture of the air outlet hole 2 is smaller than the aperture of the liquid inlet hole 3. The eccentric single-flow filtrate tube 8 is inserted into the outer working cylinder 14, and the open tube wall 6 on the upper part of the eccentric single-flow filtrate tube 8 pops open and contacts the inner wall of the outer working cylinder 14, resulting in the eccentric single-flow filtrate tube 8 being eccentric in the outer working cylinder 14, and a separation chamber 16 is formed between the open tube wall 6 and the inner wall of the outer working cylinder 14. The centralizer 13 is composed of a plurality of blades and is dispersed downward, and the ends of the blades are against the inner wall of the outer working cylinder 14. A channel is formed between the centralizer 13 and the inner wall of the outer working cylinder 14, and the channel is connected to the sand settling tail pipe. A flow limiting plate 12 is provided above the centralizer 13, and the flow limiting plate 12 is located in the pure liquid isolation tube 10. The flow limiting plate 12 is a steel plate, and a small hole 11 is drilled in the center of the flow limiting plate 12. The lower part of the pipette 9 is provided with a plurality of return holes 17, which are distributed not only from top to bottom but also on the outer circumferential wall of the pipette 9. The tail of the pipette 9 is not provided with a multifunctional spiral blade 7.
[0017] When the universal produced liquid sediment remover is in use, the mixed liquid is sucked from the liquid inlet hole 3 at the top of the outer working cylinder 14 and falls on the multifunctional spiral blade 7. The mixed liquid moves along the multifunctional spiral blade 7 from top to bottom while rotating. In the process of rotating from top to bottom, the mixed liquid passes through multiple stages of multifunctional spiral blades 7. During the rotation of the mixed liquid, gas, liquid, sand, scale and muddy substances are automatically separated at high speed. At the same time, since the pitch of the multifunctional spiral blade 7 is small, high-speed centrifugal force is generated. Due to their heavy mass, solid particles and muddy substances are thrown to the outside of the multifunctional spiral blade 7 under the action of centrifugal force, and rotate along the inner wall of the eccentric single-flow filtrate tube 8. The upper part of the eccentric single-flow filtrate tube 8 is an open-type tube wall 6, which is connected to the inner cavity of the outer working cylinder 14. A separation chamber 16 is formed between the inner wall of the outer working cylinder 14. When the solid particles and muddy materials are transferred to the open tube wall 6, they will automatically enter the separation chamber 16 between the open tube wall 6 and the outer working cylinder 14, and move downward along the wall of the separation chamber 16. The lower part of the eccentric single-flow filtrate tube 8 is in a closed state. The solid particles and muddy materials moving downward along the wall of the separation chamber 16 will not enter the eccentric single-flow filtrate tube 8, and continue to move downward through the pure liquid isolation tube 10. The pure liquid isolation tube 10 is a closed tubular structure, and the solid particles and muddy materials will not enter the eccentric single-flow filtrate tube 8 and the suction tube 9 through the pure liquid isolation tube 10. They continue to move downward, through the channel and the lower joint formed between the straightener 13 and the outer working cylinder 14, and flow into the sand settling tail pipe, and are deposited in the sand settling tail pipe.
[0018] The heavier solid particles and muddy materials in the mixed liquid are thrown to the outside of the multifunctional spiral blade 7 and separated along the separation chamber. The lighter clean liquid in the mixed liquid is located on the inside of the multifunctional spiral blade 7 and rotates along the multifunctional spiral blade 7 and the arc hole 15 opened on the inside of the multifunctional spiral blade 7. The arc hole 15 and the outer wall of the pipette 9 form a channel. The clean liquid flows downward along the channel, and the pump barrel is started. When the clean liquid flows to the end of the pipette 9, the clean liquid is sucked into the pipette 9 through the action of the pump barrel, and finally re-enters the pump barrel through the pipette 9 and the upper joint 1.
[0019] A pure liquid isolation tube 10 is added at the bottom end of the eccentric single-flow filtrate tube 8. Firstly, it plays the role of isolation, isolating the separated solid particles and muddy materials in the chamber formed between the pure liquid isolation tube 10 and the inner wall of the outer working cylinder 14, to prevent the separated solid particles and muddy materials from being sucked into the pipette 9; secondly, it plays the role of providing space. When the clean liquid flows to the end of the pipette 9, there is enough storage space to ensure that the clean liquid is sucked into the pipette 9 in an orderly and uncongested manner.
[0020] When the separated solid particles and muddy materials pass through the suction pipe 9, they will never be sucked into the suction pipe 9 under the action of the pure liquid isolation pipe 10 (the internal and external liquids are sealed and isolated). A screen pipe is connected between the sand settling tail pipe and the lower joint 5. When the sand settling tail pipe is full of sediment, the excess sediment will flow into the casing from the lower screen pipe of the lower joint 5, and will not be sucked into the pump barrel due to excessive sediment, causing pump jam.
[0021] When the liquid stops rotating, the gas in the mixed liquid will definitely move upward due to its lightest mass. The gas moves upward from the arc hole 15 and is discharged from the gas outlet 2 at the top of the outer working cylinder 14. It will not follow the mixed liquid to enter through the liquid inlet hole 3 again. The gas discharge and the mixed liquid entry use two holes respectively, each going through its own hole to avoid secondary separation.
[0022] The aperture of the air outlet 2 is smaller than that of the liquid inlet 3 because the gas has a small density and a small amount, and can be discharged through the air outlet 2 with a smaller aperture, while the mixed liquid has a large density and a large amount, and needs to enter from the liquid inlet 3 with a larger aperture.
[0023] A plurality of liquid return holes 17 are provided at the tail of the pipette 9, and no multifunctional spiral blade 7 is provided at the tail of the pipette 9. The liquid return holes 17 occupy the end of the multifunctional spiral blade 7 and also occupy the tail end of the pipette 9 without the multifunctional spiral blade 7. When the clean liquid flows downward, it can not only be sucked into the pipette 9 at the end of the pipette 9, but also can be sucked into the pipette 9 through the liquid return holes 17.
[0024] The pure liquid isolation tube 10 and the centralizer 13 used are an integrated structure. The centralizer 13 is open and dispersed downward. The centralizer 13 is against the inner wall of the outer working cylinder 14, which plays a role in centralizing the eccentric single-flow filtrate tube 8 and the pure liquid isolation tube 10 as a whole, and prevents the eccentric single-flow filtrate tube 8 and the pure liquid isolation tube 10 from moving as a whole in the outer working cylinder 14.
[0025] A limiting plate 12 is provided in the pure liquid isolation tube 10 above the centralizer 13. A small hole 11 is drilled in the center of the limiting plate 12, so that microcirculation is formed between the inner cavity of the pure liquid isolation tube 10 and the inner cavity of the outer working cylinder 14, which can accelerate the flow rate of solid particles and muddy matter.
[0026] The present invention is installed at the lower end of various oil production pumps. An ordinary screen pipe can be installed under the present invention for ordinary oil pump wells; no screen pipe is installed for electric pump and screw pump wells; and more sand settling tail pipes can be installed according to the actual situation on site.
[0027] To sum up, the universal produced fluid sediment treatment device adopts a multifunctional spiral blade with a small pitch, good centrifugal effect and thorough separation; no matter how much debris and muddy matter are separated, it will not cause pump jamming; the separated gas goes through its own channel and will not be re-merged with the liquid to form multiple separations; the present invention can not only separate sand, scale and gas, but also separate muddy matter with fine particles; the effect will be better when used in screw pumps and electric pump wells because of the fast flow rate and strong centrifugal force; the present invention adopts an eccentric single-flow filtrate tube for separation, and with the cooperation of the pure liquid isolation tube, the separated substances will never be sucked into the suction tube; the use of a flow limiting plate can accelerate the sinking speed of the separated substances, because the separated substances are larger in mass than the liquid in the pure liquid isolation tube, and microcirculation can be generated; it accelerates the sinking speed of the sediment, etc.; the present invention has a reasonable design and is simple to operate. The internal wearing parts are all made of stainless steel, which does not require disassembly and is maintenance-free for life.
Claims
1. A universal produced fluid sediment treatment device, characterized by: The invention comprises an upper joint (1), an outer working cylinder (14), a liquid suction pipe (9), an eccentric single-flow filtrate pipe (8), a multifunctional spiral blade (7), a pure liquid isolation pipe (10) and a lower joint (5); the outer wall of the liquid suction pipe (9) surrounds the multifunctional spiral blade (7) from top to bottom; a plurality of arc-shaped holes (15) are arranged at equal intervals on the inner side of the multifunctional spiral blade (7); the multifunctional spiral blade (7) is covered with an eccentric single-flow filtrate pipe (8); the upper part of the eccentric single-flow filtrate pipe (8) is an open-type pipe wall (6); the lower part of the eccentric single-flow filtrate pipe (8) is closed; one side of the upper part of the multifunctional spiral blade (7) is welded to the inner wall of the eccentric single-flow filtrate pipe (8); the other side of the upper part of the multifunctional spiral blade (7) is an open-type pipe wall (6), a circle of the lower part of the multifunctional spiral blade (7) is welded to the inner wall of the eccentric single-flow filtrate tube (8), the lower end of the eccentric single-flow filtrate tube (8) is welded to the top end of the pure liquid isolation tube (10), the bottom end of the pure liquid isolation tube (10) is provided with a centralizer (13), the integral outer casing formed by the eccentric single-flow filtrate tube (8) and the pure liquid isolation tube (10) is provided with an outer working cylinder (14), the top end of the outer working cylinder (14) is inserted into the upper joint (1) and welded to the upper joint (1), the part of the upper joint (1) inserted into the outer working cylinder (14) is connected to the suction tube (9), the bottom end of the outer working cylinder (14) is inserted into the lower joint (5) and welded to the lower joint (5); the upper part of the outer working cylinder (14) is provided with a liquid inlet hole (3).
2. The universal produced fluid sediment treatment device according to claim 1, characterized in that: The plurality of arc-shaped holes (15) embrace the outer wall of the liquid suction tube (9) and from top to bottom, a channel is formed between the arc-shaped holes (15) and the liquid suction tube (9).
3. The universal produced fluid sediment treatment device according to claim 1, characterized in that: One end of the upper joint (1) is inserted into the outer working cylinder (14) and fixedly connected, and the other end of the upper joint (1) is connected to the outer thread of the pump cylinder via an internal thread; one end of the lower joint (5) is inserted into the outer working cylinder (14) and fixedly connected, and the other end of the lower joint (5) is connected to the screen pipe thread via an external thread, and the screen pipe is connected to the sand settling tail pipe thread via a thread.
4. The universal produced fluid sediment treatment device according to claim 1, characterized in that: The number of the liquid inlet holes (3) is several, and the several liquid inlet holes (3) are evenly distributed on the outer circumferential wall of the outer working cylinder (14); an air outlet hole (2) is provided above the liquid inlet hole (3), and the number of the air outlet holes (2) is several, and the several air outlet holes (2) are evenly distributed on the outer circumferential wall of the outer working cylinder (14), and the aperture of the air outlet hole (2) is smaller than the aperture of the liquid inlet hole (3).
5. The universal produced fluid sediment treatment device according to claim 1, characterized in that: The eccentric single-flow filtrate tube (8) is inserted into the outer working cylinder (14), and the open tube wall (6) at the upper part of the eccentric single-flow filtrate tube (8) is opened and contacts the inner wall of the outer working cylinder (14), so that the eccentric single-flow filtrate tube (8) is eccentric in the outer working cylinder (14), and a separation chamber (16) is formed between the open tube wall (6) and the inner wall of the outer working cylinder (14).
6. The universal produced fluid sediment treatment device according to claim 1, characterized in that: The centralizer (13) is composed of a plurality of blades and is dispersed downward, and the ends of the blades abut against the inner wall of the outer working cylinder (14).
7. The universal produced fluid sediment treatment device according to claim 1 or 6, characterized in that: A channel is formed between the centralizer (13) and the inner wall of the outer working cylinder (14), and the channel is connected to the sand settling tail pipe.
8. The universal produced fluid sediment treatment device according to claim 1, characterized in that: A flow limiting plate (12) is provided above the centralizer (13). The flow limiting plate (12) is located in the pure liquid isolation tube (10). The flow limiting plate (12) is a steel plate. A small hole (11) is drilled in the center of the flow limiting plate (12).
9. The universal produced fluid sediment treatment device according to claim 1, characterized in that: The lower part of the liquid pipette (9) is provided with a liquid return hole (17), and a plurality of liquid return holes (17) are provided. The plurality of liquid return holes (17) are not only distributed from top to bottom, but also distributed on the outer circumferential wall of the liquid pipette (9).
10. The universal produced fluid sediment treatment device according to claim 1, characterized in that: The tail of the liquid pipette (9) is not provided with a multifunctional spiral blade (7).