Sand prevention device for oilfield water injection packer
By designing a sand discharge filter mechanism in the oil field water injection sealer, using drive motors and cleaning scrapers and other components, the problem of silt and sand blockage in the inner wall of the sandproof pipe is solved, and efficient filtration and cleaning and sealing are achieved.
Patent Information
- Application Number
- CN202421116326.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-21
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-05-21
AI Technical Summary
The inner wall of the sandproof pipe of the existing oilfield water injection sealer is easily blocked by silt and sand, resulting in unsatisfactory filtration efficiency and difficult to clean.
A sand discharge filter mechanism including a cylindrical filter mesh, a driving motor, a cleaning scraper, a rotating roller and a flushing nozzle is designed. The cylindrical filter mesh is driven to rotate by a driving motor, and the cleaning scraper is scraped off the mud and sand, and the rotating roller is used. and the rinsing spray head discharge the mud and sand to ensure the cleanliness of the filter mechanism.
It effectively improves filtration efficiency, prevents clogging, and enhances the cleaning convenience and sealing of the filter device.
Smart Images
Figure CN222253916U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of water injection packers, in particular to a sand prevention device for an oil field water injection packer. Background Art
[0002] The oilfield water injection packer uses the expansion of the rubber tube to achieve the sealing effect. In the prior art, a sand control tube is installed on the water injection packer to prevent sand. However, the residual sand on the inner wall of the sand control tube easily blocks the filter hole, which is inconvenient to clean and makes the filtration efficiency less than ideal.
[0003] For example, patent publication number CN210105815U specifically discloses a water injection packer with a sand control function, including an upper joint pipe, an upper rubber tube seat, a lower rubber tube seat and a sand control pipe, wherein an upper joint pipe is installed above the upper rubber tube seat, a slide groove is arranged inside the upper joint pipe, a sliding sleeve is arranged in the slide groove of the upper joint pipe, a lower rubber tube seat is arranged below the upper rubber tube seat, a rubber tube body is arranged between the upper rubber tube seat and the lower rubber tube seat, and a lower joint is installed below the lower rubber tube seat. A sand control pipe is installed at the lower position of the lower joint, and a mounting joint is installed at the upper end of the sand control pipe. Clamping claws are symmetrically arranged on the mounting joint, and the clamping claws are clamped in the clamping plate in the lower joint. In this utility model, the sand control effect of the device is increased, the stability and safety of the device are increased, and the installation and disassembly of the device parts are convenient by arranging the upper joint pipe and the sand control pipe. However, there is a problem that the mud and sand remaining on the inner wall of the sand control pipe are easy to clog the filter holes, which is inconvenient to clean and makes the filtration efficiency less than ideal. Utility Model Content
[0004] In view of the deficiencies in the prior art, the utility model provides an oilfield water injection packer sand control device, which solves the problem that the residual sand on the inner wall of the sand control pipe easily blocks the filter holes, making it inconvenient to clean and resulting in unsatisfactory filtering efficiency.
[0005] To achieve the above purpose, the utility model is implemented through the following technical solutions: an oilfield water injection packer sand control device, comprising a pipe body, a sand removal and filtering mechanism is provided inside the pipe body, a liquid inlet and a liquid outlet are respectively provided at both ends of the pipe body, and a connecting mechanism is provided on the liquid inlet and the liquid outlet;
[0006] The sand discharge filtering mechanism comprises a cylindrical filter screen, the top of the cylindrical filter screen is connected to a connecting pipe through a rotating joint, the bottom of the cylindrical filter screen is rotatably connected to a supporting seat, the cylindrical filter screen is connected to a driving shaft through a first gear pair, the end of the driving shaft is fixedly connected to a driving motor, the driving shaft is connected to the first rotating shaft through a second gear pair, the connecting pipe is fixedly connected to a cleaning seat inside, the cleaning seat is rotatably connected to the second rotating shaft, the second rotating shaft is connected to the first rotating shaft through a third gear pair, the second rotating shaft is connected to two rotating rollers through a fourth gear pair, a cleaning belt is sleeved between the two rotating rollers, and a plurality of cleaning plates are fixedly connected to the cleaning belt, a cleaning scraper is provided on one side of the cleaning belt, a receiving pan is provided on the bottom side of the cleaning scraper, a sand discharge pipe is connected to the end of the receiving pan, and a flushing nozzle is provided on the top side of the receiving pan.
[0007] Preferably, the connecting pipe is fixedly installed inside the tube body, and the connecting pipe is connected to the liquid inlet, and the supporting seat is fixedly installed inside the tube body, so that the cylindrical filter can rotate and water can enter the inside of the cylindrical filter.
[0008] Preferably, the output shaft end of the driving motor is fixedly connected to the driving shaft, and the driving motor is fixedly mounted on the tube body, so that the driving motor can drive the driving shaft to rotate.
[0009] Preferably, the cleaning seat is arranged on the inner side of the cylindrical filter, and the two ends of the cleaning seat are respectively fixedly connected to the connecting pipe and the support seat, so that the cleaning seat can maintain a fixed position, thereby allowing the cleaning seat to produce relative displacement with the rotating cylindrical filter, facilitating cleaning.
[0010] Preferably, the cleaning scraper is fitted with the inner wall of the cylindrical filter, the end of the cleaning scraper is fixedly connected to the cleaning seat, and the cleaning plate is fitted with the surface of the cleaning scraper, so that the cleaning scraper can clean the inner wall of the cylindrical filter, and the cleaning plate can scrape away the mud and sand on the cleaning scraper.
[0011] Preferably, a flushing pump is connected to the end of the flushing nozzle, and a water tank is connected to the input end of the flushing pump, so that the flushing pump can supply water to the flushing nozzle, and the flushing nozzle is used to flush the mud and sand on the cleaning plate.
[0012] Preferably, the connecting mechanism includes a plurality of fixed seats, each of which is rotatably connected to a connecting shaft, a guide frame is fixedly connected to the connecting shaft, a locking screw is rotatably connected to the guide frame, a locking pressure plate is threadedly connected to the locking screw, a knob with a hole is fixedly connected to the end of the locking screw, and the locking pressure plate is slidably connected to the inner wall of the guide frame, so that the connection can be conveniently performed, and the sealing can be effectively improved in combination with a sealing ring.
[0013] The utility model provides an oilfield water injection packer sand prevention device. Compared with the prior art, it has the following beneficial effects:
[0014] 1. The sand prevention device of the oilfield water injection packer drives the cylindrical filter to rotate through the driving motor. The cleaning scraper scrapes the mud and sand on the cylindrical filter. At the same time, the rotating roller drives the cleaning plate to rotate, scrapes the mud and sand on the cleaning plate and sends it to the receiving tray. The flushing nozzle flushes the mud and sand on the cleaning plate into the receiving tray and is discharged by the sand discharge pipe, which is convenient for cleaning, prevents blockage, and effectively improves the filtration efficiency.
[0015] 2. The sand prevention device of the oilfield water injection packer rotates the guide frame and then rotates the knob with a hole. The rotation of the knob with a hole drives the locking screw to rotate. The rotation of the locking screw drives the locking pressure plate to move, thereby pressing the two ends of the pipe body and the external pipe to facilitate connection, and can press the sealing ring to improve the sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0017] Figure 2 This is a schematic diagram of the structure of the sand removal and filtering mechanism of the utility model;
[0018] Figure 3 This is a schematic diagram of the internal structure of the cleaning seat of the utility model;
[0019] Figure 4 It is a schematic diagram of the connecting mechanism structure of the utility model.
[0020] In the figure: 1. pipe body; 2. sand removal and filtering mechanism; 201. cylindrical filter screen; 202. connecting pipe; 203. supporting seat; 204. first gear pair; 205. driving shaft; 206. driving motor; 207. second gear pair; 208. first rotating shaft; 209. third gear pair; 210. cleaning seat; 211. second rotating shaft; 212. fourth gear pair; 213. cleaning scraper; 214. rotating roller; 215. cleaning belt; 216. cleaning plate; 217. receiving tray; 218. flushing nozzle; 219. sand removal pipe; 3. liquid inlet; 4. connecting mechanism; 401. fixing seat; 402. connecting shaft; 403. guide frame; 404. locking screw; 405. knob with hole; 406. locking pressure plate. DETAILED DESCRIPTION
[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0022] See also Figure 1-3 The utility model provides a technical solution: a sand prevention device for an oilfield water injection packer, comprising a pipe body 1, a sand removal filter mechanism 2 is arranged inside the pipe body 1, a liquid inlet 3 and a liquid outlet are arranged at both ends of the pipe body 1, and a connecting mechanism 4 is arranged on the liquid inlet 3 and the liquid outlet, which can be filtered through the sand removal filter mechanism 2, and the mud and sand on the inner wall of the cylindrical filter screen 201 can be scraped off, and then the scraped mud and sand can be flushed and discharged, which is convenient for cleaning, prevents blockage, and effectively improves the filtering efficiency.
[0023] The sand removal and filtering mechanism 2 includes a cylindrical filter screen 201, the top of the cylindrical filter screen 201 is connected to a connecting pipe 202 through a rotating joint, the bottom of the cylindrical filter screen 201 is rotatably connected to a support seat 203, the connecting pipe 202 is fixedly installed inside the pipe body 1, and the connecting pipe 202 is connected to the liquid inlet 3, and the support seat 203 is fixedly installed inside the pipe body 1, so that the cylindrical filter screen 201 can rotate and water can enter the cylindrical filter screen 201. The cylindrical filter screen 201 is connected to a drive shaft 205 through a first gear pair 204, and the end of the drive shaft 205 is fixedly connected to a drive motor 206, and the output shaft end of the drive motor 206 is connected to the drive motor 206. The shaft 205 is fixedly connected, and the driving motor 206 is fixedly installed on the pipe body 1, so that the driving motor 206 can drive the driving shaft 205 to rotate. The driving shaft 205 is connected to the first rotating shaft 208 through the second gear pair 207. The connecting pipe 202 is fixedly connected with a cleaning seat 210 inside. The cleaning seat 210 is arranged on the inner side of the cylindrical filter 201, and the two ends of the cleaning seat 210 are respectively fixedly connected to the connecting pipe 202 and the supporting seat 203, so that the cleaning seat 210 can keep a fixed position, so that the cleaning seat 210 can produce relative displacement with the rotating cylindrical filter 201, which is convenient for cleaning. The cleaning seat 210 is rotatably connected inside The second rotating shaft 211 is connected to the first rotating shaft 208 through the third gear pair 209, so that the driving motor 206 can drive the second rotating shaft 211 to rotate. The second rotating shaft 211 is connected to two rotating rollers 214 through the fourth gear pair 212. The two rotating rollers 214 rotate with the inner wall of the cleaning seat 210, so as to drive the cleaning belt 215 to rotate. A cleaning belt 215 is sleeved between the two rotating rollers 214. A plurality of cleaning plates 216 are fixedly connected to the cleaning belt 215. A cleaning scraper 213 is provided on one side of the cleaning belt 215. The cleaning scraper 213 fits the inner wall of the cylindrical filter screen 201. The cleaning scraper 213 is in contact with the inner wall of the cylindrical filter screen 201. The end of 13 is fixedly connected to the cleaning seat 210, and the cleaning plate 216 fits with the surface of the cleaning scraper 213, so that the cleaning scraper 213 can clean the inner wall of the cylindrical filter 201, and the cleaning plate 216 can scrape away the mud and sand on the cleaning scraper 213. A receiving tray 217 is provided on the bottom side of the cleaning scraper 213, and a sand discharge pipe 219 is connected to the end of the receiving tray 217. A flushing nozzle 218 is provided on the top side of the receiving tray 217, and a flushing pump is connected to the end of the flushing nozzle 218. The input end of the flushing pump is connected to a water tank, so that the flushing pump can supply water to the flushing nozzle 218, and the flushing nozzle 218 is used to flush the mud and sand on the cleaning plate 216.
[0024] See also Figure 1 and Figure 4The connecting mechanism 4 includes a plurality of fixed seats 401, each of which is rotatably connected to a connecting shaft 402, a guide frame 403 is fixedly connected to the connecting shaft 402, a locking screw 404 is rotatably connected to the guide frame 403, a locking pressure plate 406 is threadedly connected to the locking screw 404, a knob 405 with a hole is fixedly connected to the end of the locking screw 404, the locking pressure plate 406 is slidably connected to the inner wall of the guide frame 403, so that the connection can be convenient, and the sealing ring can be effectively improved by rotating the guide frame 403 and then rotating the knob 405 with a hole. The rotation of the knob 405 with a hole drives the locking screw 404 to rotate, and the rotation of the locking screw 404 drives the locking pressure plate 406 to move, thereby pressing the two ends of the tube body 1 and the external pipeline, which is convenient for connection and can press the sealing ring to improve the sealing.
[0025] During operation, the driving motor 206 drives the driving shaft 205 to rotate, and the driving shaft 205 drives the cylindrical filter screen 201 to rotate through the first gear pair 204, so that a relative displacement is generated between the cylindrical filter screen 201 in the rotating state and the stationary cleaning scraper 213, and the cleaning scraper 213 scrapes the mud and sand on the cylindrical filter screen 201 and leaves it on the cleaning scraper 213. At the same time, the driving shaft 205 drives the first rotating shaft 208 to rotate, and the rotation of the first rotating shaft 208 drives the second rotating shaft 211 to rotate, and the rotation of the second rotating shaft 211 drives the rotating roller 214 to rotate, and the rotation of the rotating roller 214 drives the cleaning belt 215 to rotate, and the rotation of the cleaning belt 215 drives the cleaning plate 216 to rotate, and the mud and sand on the cleaning plate 216 are scraped off and sent to the receiving tray 217, and the flushing nozzle 218 flushes the mud and sand on the cleaning plate 216 into the inside of the receiving tray 217, and the sand is discharged by the sand discharge pipe 219, which is convenient for cleaning, prevents blockage, and effectively improves the filtration efficiency.
[0026] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.
Claims
1. An oilfield water injection packer sand control device, comprising a pipe body (1), characterized in that: A sand removal and filtering mechanism (2) is provided inside the tube body (1), and a liquid inlet (3) and a liquid outlet are provided at both ends of the tube body (1), and a connecting mechanism (4) is provided on the liquid inlet (3) and the liquid outlet; The sand removal and filtering mechanism (2) comprises a cylindrical filter screen (201), the top end of the cylindrical filter screen (201) is connected to a connecting pipe (202) via a rotating joint, the bottom end of the cylindrical filter screen (201) is rotatably connected to a supporting seat (203), the cylindrical filter screen (201) is connected to a driving shaft (205) via a first gear pair (204), the end of the driving shaft (205) is fixedly connected to a driving motor (206), the driving shaft (205) is connected to a first rotating shaft (208) via a second gear pair (207), the connecting pipe (202) is fixedly connected to a cleaning seat (210), the cleaning seat (210) is rotatably connected to a second rotating shaft (208) 211), the second rotating shaft (211) is transmission-connected to the first rotating shaft (208) via a third gear pair (209), the second rotating shaft (211) is transmission-connected to two rotating rollers (214) via a fourth gear pair (212), a cleaning belt (215) is sleeved between the two rotating rollers (214), a plurality of cleaning plates (216) are fixedly connected to the cleaning belt (215), a cleaning scraper (213) is provided on one side of the cleaning belt (215), a receiving tray (217) is provided on one side of the bottom of the cleaning scraper (213), a sand discharge pipe (219) is connected to the end of the receiving tray (217), and a flushing nozzle (218) is provided on one side of the top of the receiving tray (217).
2. The oilfield water injection packer sand control device according to claim 1, characterized in that: The connecting pipe (202) is fixedly mounted inside the pipe body (1), and the connecting pipe (202) is connected to the liquid inlet (3), and the supporting seat (203) is fixedly mounted inside the pipe body (1).
3. The oilfield water injection packer sand control device according to claim 1, characterized in that: The output shaft end of the driving motor (206) is fixedly connected to the driving shaft (205), and the driving motor (206) is fixedly mounted on the pipe body (1).
4. The oilfield water injection packer sand control device according to claim 1, characterized in that: The cleaning seat (210) is arranged inside the cylindrical filter screen (201), and two ends of the cleaning seat (210) are fixedly connected to the connecting pipe (202) and the supporting seat (203) respectively.
5. The oilfield water injection packer sand control device according to claim 1, characterized in that: The cleaning scraper (213) fits against the inner wall of the cylindrical filter screen (201), the end of the cleaning scraper (213) is fixedly connected to the cleaning seat (210), and the cleaning plate (216) fits against the surface of the cleaning scraper (213).
6. The oilfield water injection packer sand control device according to claim 1, characterized in that: The end of the flushing nozzle (218) is connected to a flushing pump, and the input end of the flushing pump is connected to a water tank.
7. The oilfield water injection packer sand control device according to claim 1, characterized in that: The connection mechanism (4) comprises a plurality of fixed seats (401), each of the plurality of fixed seats (401) being rotatably connected to a connection shaft (402), the connection shaft (402) being fixedly connected to a guide frame (403), the guide frame (403) being rotatably connected to a locking screw (404), and the locking screw (404) being threadedly connected to a locking pressure plate (406).
8. The oilfield water injection packer sand control device according to claim 7, characterized in that: The end of the locking screw (404) is fixedly connected to a knob (405) with a hole, and the locking pressure plate (406) is slidably connected to the inner wall of the guide frame (403).
Citation Information
Cited By
Sand-proof, leakage-proof and anti-blocking deep-well pump
CN119467351A