CN114856469B - Cementing skin cleaning device for water injection well - Google Patents
Cementing skin cleaning device for water injection well Download PDFInfo
- Publication number
- CN114856469B CN114856469B CN202210422711.2A CN202210422711A CN114856469B CN 114856469 B CN114856469 B CN 114856469B CN 202210422711 A CN202210422711 A CN 202210422711A CN 114856469 B CN114856469 B CN 114856469B
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- China
- Prior art keywords
- water injection
- injection well
- closed
- mounting shell
- cleaning device
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 98
- 238000002347 injection Methods 0.000 title claims abstract description 68
- 239000007924 injection Substances 0.000 title claims abstract description 68
- 238000004140 cleaning Methods 0.000 title claims abstract description 22
- 238000007789 sealing Methods 0.000 claims abstract description 16
- 239000004568 cement Substances 0.000 claims abstract description 6
- 230000001360 synchronised effect Effects 0.000 claims abstract description 5
- 238000009434 installation Methods 0.000 claims description 8
- 238000004804 winding Methods 0.000 claims description 8
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 13
- 238000011086 high cleaning Methods 0.000 abstract 1
- 238000005406 washing Methods 0.000 description 7
- 238000011010 flushing procedure Methods 0.000 description 4
- 239000003129 oil well Substances 0.000 description 4
- 230000000737 periodic effect Effects 0.000 description 4
- 239000004576 sand Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/126—Packers; Plugs with fluid-pressure-operated elastic cup or skirt
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B37/00—Methods or apparatus for cleaning boreholes or wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/20—Displacing by water
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Cleaning By Liquid Or Steam (AREA)
Abstract
The cement sheath cleaning device for the water injection well comprises a movable frame, a mounting shell, a sealing module and an annular separator, wherein the mounting shell is in threaded connection with the center of the top of the movable frame, a plurality of ropes are coiled in the mounting shell, and the bottom ends of the ropes are connected to the separator; the closed module comprises a pair of hydraulic rods and a pair of semicircular closed rings, the middle parts of the inner sides of the closed rings are connected through a pair of telescopic rods, synchronous blocks are arranged at the same ends of the two telescopic rods, fixed blocks are arranged on two sides of the inner sides of the closed rings, driving rods are hinged to the front ends of the fixed blocks, the two driving rods on the same sides are hinged to two ends of a rotating plate respectively, and the center of the rotating plate is connected with a rotating disc through a fixed shaft. The invention controls the two closed rings to be opened and closed repeatedly between the closed ring groove and the water injection gap periodically under the set frequency, and realizes the repeated cleaning of mud skin on the inner wall of the sleeve and the outer wall of the oil pipe of the water injection well by utilizing the water hammer effect, thereby having high cleaning efficiency.
Description
Technical Field
The invention relates to the technical field of water injection wells, in particular to a mud skin cleaning device for a water injection well.
Background
When the oil field development enters the development stage of the middle and high water-containing period, the pressure at the oil layer is too small to extract the oil from the underground normally, so a water injection well is built beside the oil well, and the pressure at the oil layer is increased by injecting water into the water injection well, so that the oil well can work normally. However, sand and soil in the sand layer can continuously permeate into the sleeve and form mud skin which is difficult to remove on the inner wall of the sleeve, so that when the mud skin on the middle lower part of the inner wall of the sleeve is accumulated to a certain thickness, the difficulty of water injection into a water injection well can be greatly increased, and finally petroleum cannot be extracted. Therefore, the periodic cleaning of mud skin attached to the inner wall of the casing of the water injection well is a necessary task in the petroleum exploitation process.
In order to clean plugs such as sand in a downhole string of a casing of a water injection well and an oil layer in a near wellbore zone, the pressure in the oil layer is increased, the oil absorption capacity of the oil layer is recovered, and workers usually wash the well in three modes: the positive circulation well washing, the reverse circulation well washing and the mixed well washing, wherein the positive circulation well washing is only suitable for small-class well drilling, the reverse circulation well washing has poor well ground washing effect, large energy consumption and high cost, the mixed circulation well washing cannot be continuously constructed, and the auxiliary time is prolonged. The three well flushing modes have obvious defects, and have the defects of low efficiency, high energy consumption, long consumption time and the like, and can cause damage to soil layers to different degrees.
The well flushing is not thorough, the well flushing effect cannot be guaranteed, and the well is seriously lost. Because the water injection well is under-washed, dirty oil and impurities in the well bore are gradually increased, scaling in the near well zone and the plug is gradually serious, and the operation well is increased year by year. The under-injected well is increased, the stratum energy is seriously insufficient due to the under-injected of the water injection well, the low-pressure layer absorbs a large amount of water, the water content of the oil well rises quickly, the decrease speed is high, and the development effect is seriously influenced.
Disclosure of Invention
In order to solve the problems, the invention provides a cementing skin cleaning device for a water injection well, which comprises the following specific technical scheme:
The utility model provides a cementing skin belt cleaning device of water injection well, includes water injection well oil pipe and sleeve pipe of cover on it, form the water injection clearance between water injection well oil pipe and the sleeve pipe, still include and remove frame, installation shell, closed module and annular separator, installation shell threaded connection is in the top center of removing the frame, the installation shell is inner to be rolled up and is equipped with the rope of many extension its bottom surfaces, and the bottom of each rope all is connected on the separator; the sealing module comprises a pair of hydraulic rods and a pair of semicircular sealing rings, the middle parts of the inner sides of the two sealing rings are connected through a pair of telescopic rods, synchronous blocks are arranged at the same ends of the two telescopic rods, fixed blocks are arranged at two sides of the inner side of the sealing rings, driving rods are hinged to the front ends of the fixed blocks, the two driving rods at the same side are respectively hinged to two ends of a rotating plate, and the center of the rotating plate is connected with a rotating disc through a fixed shaft; the middle part of water injection well oil pipe has seted up with two closed loop assorted closed loop grooves, the closed loop sets up in the closed loop inslot, the bottom of hydraulic stem is provided with and is used for driving the pivoted drive assembly of rolling disc, and the top of hydraulic stem is movably installed in water injection well oil pipe's inside, the thickness of separator and closed loop all matches with the water injection clearance, be provided with the control button that is used for controlling hydraulic stem flexible on the installation shell, the hydraulic stem is through the action of opening and shutting of drive assembly control two closed loops to open and close to the water injection clearance periodicity.
Further, the driving assembly comprises a long circular ring, the long circular ring is arranged at the bottom end of the hydraulic rod, and an eccentric column capable of moving in the long circular ring is arranged at the edge of the outer side face of the rotating disc.
Further, a winding engine for winding and unwinding ropes is arranged in the mounting shell.
Further, a rotary hand is provided on top of the mounting shell.
Further, the movable frame comprises a cross beam and a pair of trolleys, two ends of the cross beam are respectively connected with the two trolleys through triangular reinforcing steel bars, and wheels are detachably arranged at the bottoms of the trolleys.
The beneficial effects are that:
The invention controls the two closed loops to be periodically opened and closed between the closed loop groove and the water injection gap at a set frequency, so that a periodic water hammer effect is generated in the water injection gap, and mud skin on the inner wall of the sleeve and the outer wall of the oil pipe of the water injection well is cleaned for multiple times; through putting down the separator to different positions, carry out the water injection, draw water and control the motion frequency of closed loop in the water injection clearance in the separation section to produce the water hammer effect that reaches appointed effect, with carrying out the key clearance to specific well Duan Nipi, realize the high-efficient clearance to deeper water injection well oil pipe. Meanwhile, the moving speed of the water hammer shock wave can be controlled by controlling the power of the water suction pump, so that the purpose of controlling the pressure intensity of the water hammer wave is achieved, the mud skin is cleaned for many times, and the cleaning efficiency is high.
Drawings
Fig. 1 is an overall schematic of the present invention.
FIG. 2 is a schematic diagram of a tubing and casing of a water injection well according to the present invention.
Fig. 3 is a schematic view of the mounting shell and divider connection of the present invention.
Fig. 4 is a schematic view of the closure device of the present invention in its closed configuration.
Fig. 5 is a schematic view of the internal structure of the closure device of the present invention when opened.
In the figure: the device comprises a moving frame 1, a cross beam 11, a reinforcing steel bar frame 12, a trolley 13, wheels 14, a water injection well oil pipe 2, a closed ring groove 21, a sleeve pipe 3, a mounting shell 4, a rotary hand crank 41, a rope 42, a separator 43, a winch 44, a closed module 5, a closed ring 51, a hydraulic rod 52, a telescopic rod 53, a synchronous block 54, a fixed block 55, a driving rod 56, a rotating plate 57, a rotating disc 58, an eccentric column 59 and a long circular ring 6.
Detailed Description
The invention is further described with reference to the accompanying drawings and specific embodiments:
As shown in fig. 1 to 5, a cement sheath cleaning device for a water injection well comprises a water injection well oil pipe 2, a sleeve 3 sleeved on the water injection well oil pipe 2, a movable frame 1, a mounting shell 4, a closed module 5 and an annular separator 43, wherein the mounting shell 4 is in threaded connection with the top center of the movable frame 1, a plurality of ropes 42 extending out of the bottom surface of the mounting shell 4 are wound in the mounting shell 4, and the bottom ends of the ropes 42 are connected to the separator 43; the sealing module 5 comprises a pair of hydraulic rods 52 and a pair of semicircular sealing rings 51, the middle parts of the inner sides of the two sealing rings 51 are connected through a pair of telescopic rods 53, the same ends of the two telescopic rods 53 are provided with synchronous blocks 54, the two sides of the inner side of the sealing rings 51 are provided with fixed blocks 55, the front ends of the fixed blocks 55 are hinged with driving rods 56, the two driving rods 56 on the same side are respectively hinged with the two ends of a rotating plate 57, and the center of the rotating plate 57 is connected with a rotating disc 58 through a fixed shaft; the middle part of water injection well oil pipe 2 has seted up with two closed loop 51 assorted closed loop groove 21, closed loop 51 sets up in closed loop groove 21, the bottom of hydraulic rod 52 is provided with the drive assembly who is used for driving rolling disc 58 pivoted, and the top of hydraulic rod 52 movably installs in the inside of water injection well oil pipe 2, the thickness of separator 43 and closed loop 51 all matches with the water injection clearance, be provided with the control button that is used for controlling hydraulic rod 52 flexible on the installation shell 4, hydraulic rod 52 controls the action of opening and shutting of two closed loops 51 through drive assembly to open and close the water injection clearance periodically.
As shown in fig. 1 and 2, the water injection well oil pipe 2 is built beside an oil well, and the movable frame 1 is moved to be right above the water injection well oil pipe 2, so that the mud skin cleaning device is convenient to install; the water injection well oil pipe 2 is also provided with a centrifugal pump for injecting water into the water injection well oil pipe and a water pump for pumping water, and the lower end of the sleeve 3 is provided with a plurality of small holes for water exchange of the aquifer.
As shown in fig. 3, a winding machine 44 for winding and unwinding the rope 42 is arranged in the mounting shell 4, and a control switch of the winding machine 44 is arranged on the mounting shell 4; the winding machine 44 controls the lowering length of the rope 42, thereby controlling the height of the separator 43 in the water filling gap, and making the closed module 5 in a closed working environment.
Preferably, the top of the mounting shell 4 is provided with a swivel hand 41, so that the mounting is threadably mounted on the moving frame 1 by means of the swivel hand 41.
As shown in fig. 4 and 5, further, the driving assembly includes an elongated circular ring 6, the elongated circular ring 6 is disposed at the bottom end of the hydraulic rod 52, and an eccentric column 59 that can move in the elongated circular ring 6 is disposed at the edge of the outer side surface of the rotating disc 58.
Specifically, the sealing module 5 is installed in the closed loop groove 21, and when it is not in use, the two sealing rings 51 form a sealing effect on the closed loop groove 21. The telescopic rod 53 can provide the closed loop 51 to move between the closed loop groove 21 and the water injection gap, when moving into the water injection gap, a controllable water hammer effect is generated in the water injection gap, and mud skin of the pipe wall is cleaned by utilizing the water hammer effect.
The moving distance of the eccentric column 59 in the long circular ring 6 is matched with the diameter formed by the circumferential rotation of the eccentric column 59; when the hydraulic rod 52 performs periodic telescopic action, the eccentric column 59 moves back and forth in the long circular ring 6, so that the eccentric column 59 drives the rotating disc 58 to rotate; meanwhile, the rotating disc 58 drives the rotating plate 57 to synchronously rotate through the fixed shaft, so that the driving rod 56 is connected to the end part of the rotating plate 57 to rotate along with the rotating plate 57, the driving rod 56 pulls the fixed block 55 to periodically reciprocate, and finally, the two closed loops 51 are periodically moved between the closed loop groove 21 and the water filling gap.
As shown in fig. 1, the moving frame 1 includes a cross beam 11 and a pair of trolleys 13, two ends of the cross beam 11 are respectively connected with the two trolleys 13 through triangular reinforcing bars 12, and wheels 14 are detachably arranged at the bottom of the trolleys 13. When the mud skin cleaning device works normally, the wheels 14 at the bottom of the trolley 13 are removed, so that the main board of the trolley 13 can be fixed around a wellhead, movement of the mud skin during cleaning is prevented, and the well cleaning process is more stable and safer. When the well-flushing site is replaced, the wheels 14 are arranged on the trolley 13, so that the movement is more convenient.
When the water injection well oil pipe 2 arranged in the closed module 5 is arranged in the sleeve 3, the movable frame 1 which is in threaded connection with the installation shell 4 is moved to the position of the water injection well oil pipe 2, and the wheels 14 of the trolley 13 are detached, so that the movable frame 1 is stabilized on the ground. Starting a winch 44 to lower the rope 42, and lowering the separator 43 into the water injection gap above the closed module 5 so as to perform interval isolation on the water injection gap; starting a centrifugal pump to fill water into the water injection well oil pipe 2, starting a water suction pump to pump water when the water level reaches the cleaning limit, starting two hydraulic rods 52 through a controller, adjusting the expansion frequency, enabling the hydraulic rods 52 to control the two closed rings 51 to periodically and repeatedly open and close between the closed ring groove 21 and a water injection gap under the set frequency, enabling a periodic water hammer effect to be generated in the water injection gap, and cleaning mud skin on the inner wall of the sleeve 3 and the outer wall of the water injection well oil pipe 2 for multiple times; by lowering the separator 43 to different positions, water is injected into the water injection gap in the separation section, water is pumped, and the movement frequency of the closed loop 51 is controlled, so that a water hammer effect reaching a specified effect is generated, and the special well Duan Nipi is subjected to key cleaning, so that the oil pipe 2 of the deeper water injection well is cleaned efficiently. Meanwhile, the moving speed of the water hammer shock wave can be controlled by controlling the power of the water suction pump, so that the purpose of controlling the pressure intensity of the water hammer wave is achieved, and the mud skin is cleaned for many times.
Claims (5)
1. The utility model provides a cementing skin belt cleaning device of water injection well, includes water injection well oil pipe and the sleeve pipe of cover on it, form water injection clearance, its characterized in that between water injection well oil pipe and the sleeve pipe: the device comprises a movable frame, a mounting shell, a closed module and an annular separator, wherein the mounting shell is in threaded connection with the center of the top of the movable frame, a plurality of ropes extending out of the bottom surface of the mounting shell are coiled in the mounting shell, and the bottom ends of the ropes are connected to the separator; the sealing module comprises a pair of hydraulic rods and a pair of semicircular sealing rings, the middle parts of the inner sides of the two sealing rings are connected through a pair of telescopic rods, synchronous blocks are arranged at the two ends of the two telescopic rods, fixed blocks are arranged at the two sides of the inner side of the sealing rings, driving rods are hinged to the front ends of the fixed blocks, the two driving rods at the same side are hinged to the two ends of a rotating plate respectively, and the center of the rotating plate is connected with a rotating disc through a fixed shaft; the middle part of water injection well oil pipe has seted up with two closed loop assorted closed loop grooves, the closed loop sets up in the closed loop inslot, the bottom of hydraulic stem is provided with and is used for driving the pivoted drive assembly of rolling disc, and the top of hydraulic stem is movably installed in water injection well oil pipe's inside, the thickness of separator and closed loop all matches with the water injection clearance, be provided with the control button that is used for controlling hydraulic stem flexible on the installation shell, the hydraulic stem is through the action of opening and shutting of drive assembly control two closed loops to open and close to the water injection clearance periodicity.
2. A cement sheath cleaning device for a water injection well according to claim 1, wherein: the driving assembly comprises a long circular ring, the long circular ring is arranged at the bottom end of the hydraulic rod, and an eccentric column capable of moving in the long circular ring is arranged at the edge of the outer side face of the rotating disc.
3. A cement sheath cleaning device for a water injection well according to claim 1, wherein: a winding engine for winding and unwinding ropes is arranged in the mounting shell.
4. A cement sheath cleaning device for a water injection well according to claim 1, wherein: the top of the installation shell is provided with a rotary hand.
5. A cement sheath cleaning device for a water injection well according to claim 1, wherein: the movable frame comprises a cross beam and a pair of trolleys, two ends of the cross beam are respectively connected with the two trolleys through triangular reinforcing steel bars, and wheels are detachably arranged at the bottoms of the trolleys.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210422711.2A CN114856469B (en) | 2022-04-21 | 2022-04-21 | Cementing skin cleaning device for water injection well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210422711.2A CN114856469B (en) | 2022-04-21 | 2022-04-21 | Cementing skin cleaning device for water injection well |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114856469A CN114856469A (en) | 2022-08-05 |
| CN114856469B true CN114856469B (en) | 2024-05-14 |
Family
ID=82630933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210422711.2A Active CN114856469B (en) | 2022-04-21 | 2022-04-21 | Cementing skin cleaning device for water injection well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114856469B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4979577A (en) * | 1983-07-08 | 1990-12-25 | Intech International, Inc. | Flow pulsing apparatus and method for down-hole drilling equipment |
| RU95103316A (en) * | 1995-03-07 | 1996-12-20 | Товарищество с ограниченной ответственностью "Инженерный сервис" | Device for well depression cleaning |
| RU2304700C1 (en) * | 2006-01-23 | 2007-08-20 | Олег Олегович Буторин | Device for selective cleaning of channels for perforation and processing of face-adjacent zone |
| CN202140072U (en) * | 2011-07-06 | 2012-02-08 | 刘防修 | Self-exciting vibration water injector |
| CN109538163A (en) * | 2019-01-29 | 2019-03-29 | 吉林大学 | A kind of ultrasonic activation combined type well-washing device and pumping and washing process |
| CN113107574A (en) * | 2021-04-27 | 2021-07-13 | 太原理工大学 | Unpowered pulse water hammer pump generating device |
| CN113107401A (en) * | 2020-01-13 | 2021-07-13 | 中国石油天然气股份有限公司 | Water injection well washing device and working method thereof |
| CN214697747U (en) * | 2021-05-07 | 2021-11-12 | 四川省地质工程勘察院集团有限公司 | Automatic well washing device of underground water monitoring well |
-
2022
- 2022-04-21 CN CN202210422711.2A patent/CN114856469B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4979577A (en) * | 1983-07-08 | 1990-12-25 | Intech International, Inc. | Flow pulsing apparatus and method for down-hole drilling equipment |
| RU95103316A (en) * | 1995-03-07 | 1996-12-20 | Товарищество с ограниченной ответственностью "Инженерный сервис" | Device for well depression cleaning |
| RU2304700C1 (en) * | 2006-01-23 | 2007-08-20 | Олег Олегович Буторин | Device for selective cleaning of channels for perforation and processing of face-adjacent zone |
| CN202140072U (en) * | 2011-07-06 | 2012-02-08 | 刘防修 | Self-exciting vibration water injector |
| CN109538163A (en) * | 2019-01-29 | 2019-03-29 | 吉林大学 | A kind of ultrasonic activation combined type well-washing device and pumping and washing process |
| CN113107401A (en) * | 2020-01-13 | 2021-07-13 | 中国石油天然气股份有限公司 | Water injection well washing device and working method thereof |
| CN113107574A (en) * | 2021-04-27 | 2021-07-13 | 太原理工大学 | Unpowered pulse water hammer pump generating device |
| CN214697747U (en) * | 2021-05-07 | 2021-11-12 | 四川省地质工程勘察院集团有限公司 | Automatic well washing device of underground water monitoring well |
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| Publication number | Publication date |
|---|---|
| CN114856469A (en) | 2022-08-05 |
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