CN114856469A - Water injection well mud skin belt cleaning device - Google Patents
Water injection well mud skin belt cleaning device Download PDFInfo
- Publication number
- CN114856469A CN114856469A CN202210422711.2A CN202210422711A CN114856469A CN 114856469 A CN114856469 A CN 114856469A CN 202210422711 A CN202210422711 A CN 202210422711A CN 114856469 A CN114856469 A CN 114856469A
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- Prior art keywords
- water injection
- injection well
- closed
- cleaning device
- pair
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 90
- 238000002347 injection Methods 0.000 title claims abstract description 70
- 239000007924 injection Substances 0.000 title claims abstract description 70
- 238000004140 cleaning Methods 0.000 title claims abstract description 23
- 238000007789 sealing Methods 0.000 claims abstract description 20
- 230000001360 synchronised effect Effects 0.000 claims abstract description 4
- 238000009434 installation Methods 0.000 claims description 6
- 239000004568 cement Substances 0.000 claims description 5
- 230000000737 periodic effect Effects 0.000 claims description 5
- 238000004804 winding Methods 0.000 claims description 5
- 238000005096 rolling process Methods 0.000 claims description 4
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 15
- 238000011086 high cleaning Methods 0.000 abstract 1
- 238000005406 washing Methods 0.000 description 11
- 239000003129 oil well Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Images
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
A water injection well mud skin cleaning 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 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 side surfaces of the sealing rings are connected through a pair of telescopic rods, the same ends of the two telescopic rods are provided with synchronous blocks, the two sides of the inner side of each sealing ring are provided with fixed blocks, the front ends of the fixed blocks are hinged with driving rods, 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 invention controls the two closed rings to be periodically opened and closed between the closed ring groove and the water injection gap under the set frequency, realizes the multiple cleaning of the mud skin on the inner wall of the casing and the outer wall of the oil pipe of the water injection well by utilizing the water hammer effect, and has high cleaning efficiency.
Description
Technical Field
The invention relates to the technical field of water injection wells, in particular to a water injection well cement skin cleaning device.
Background
When the development of the oil field enters the development stage of medium and high water-cut periods, the pressure at the oil layer is too small to normally extract oil from the underground, 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 normally work. But because grit and earth in the sand layer can constantly permeate to the sleeve pipe and form the mud skin that is difficult to clear away at the sleeve pipe inner wall, so when the mud skin of lower part when the sleeve pipe inner wall accumulated to certain thickness, can greatly increased the degree of difficulty of water injection in to the water injection well and finally lead to the oil can't take out. Therefore, the regular cleaning of the mud skin attached to the inner wall of the casing of the water injection well is a necessary work in the oil exploitation process.
In order to clear up plugs such as silt in the tubular column in the pit of water injection well casing pipe and the near wellbore area oil reservoir, increase the pressure in the oil reservoir, resume the oil absorption ability of oil reservoir, workman uses three kinds of modes to wash the well usually: the well washing method comprises the steps of positive circulation well washing, reverse circulation well washing and mixed well washing, wherein the positive circulation well washing is only suitable for small-class 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 washing modes have obvious disadvantages, have the defects of low efficiency, high energy consumption, long consumption time and the like, and can cause damage to soil layers in different degrees.
The well washing is not thorough, the well washing effect cannot be guaranteed, and the water well is seriously washed. Because the water injection well is underwashed, dirty oil and impurities in the shaft are gradually increased, scaling in the near-wellbore area and the position of the plugging device is gradually serious, and the number of operation wells is increased year by year. The increase of the under-injection wells is caused, the under-injection of the water injection wells leads to serious shortage of formation energy, a low-pressure layer absorbs a large amount of water, the water content of the oil well rises quickly and decreases quickly, and the development effect is seriously influenced.
Disclosure of Invention
In order to solve the problems, the invention provides a water injection well mud skin cleaning device, which has the specific technical scheme that:
a water injection well mud skin cleaning device comprises a water injection well oil pipe and a sleeve sleeved on the water injection well oil pipe, wherein a water injection gap is formed between the water injection well oil pipe and the sleeve; the sealing module comprises a pair of hydraulic rods and a pair of semicircular sealing rings, the middle parts of the inner side surfaces of the two sealing rings are connected through a pair of telescopic rods, the same ends of the two telescopic rods are respectively provided with a synchronous block, the two sides of the inner side of the sealing ring are respectively provided with a fixed block, the front end of each fixed block is hinged with a driving rod, the two driving rods at the same side are respectively hinged to the 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 is seted up with two closed ring assorted closed ring grooves, the closed ring sets up in the closed ring inslot, the bottom of hydraulic stem is provided with and is used for driving rolling disc pivoted drive assembly, and the top of hydraulic stem is installed in water injection well oil pipe's inside with moving about, the thickness of divider and closed ring all with water injection clearance phase-match, be provided with on the installation shell and be used for controlling the flexible control button of hydraulic stem, the hydraulic stem controls the action of opening and shutting of two closed rings through drive assembly to carry out periodic opening and shutting to the water injection clearance.
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 on the edge of the outer side face of the rotating disc.
Furthermore, a winch used for winding and unwinding the rope is arranged in the mounting shell.
Further, the top of the installation shell is provided with a rotary hand.
Furthermore, the moving 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 bar frames, and wheels are detachably arranged at the bottoms of the trolleys.
Has the advantages that:
the invention controls the two closed rings to be periodically opened and closed between the closed ring groove and the water injection gap under the set frequency, so that the periodic water hammer effect is generated in the water injection gap, and the mud skin on the inner wall of the casing and the outer wall of the oil pipe of the water injection well is cleaned for multiple times; different positions are placed through the separator, water injection, water pumping and control of the motion frequency of the closed ring are performed on the water injection gap in the separation section, and therefore the water hammer effect reaching the specified effect is generated, the specific well section mud skin is mainly cleaned, and efficient cleaning of oil pipes of the deep water injection well is achieved. Meanwhile, the moving speed of the water hammer shock waves can be controlled by controlling the power of the water suction pump, so that the purpose of controlling the pressure of the water hammer waves is achieved, the effect of cleaning mud peels for many times is achieved, and the cleaning efficiency is high.
Drawings
Fig. 1 is an overall schematic view of the present invention.
FIG. 2 is a schematic view of the injection well tubing and casing of the present invention.
Fig. 3 is a schematic view of the attachment of the mounting housing and the divider of the present invention.
Fig. 4 is an overall schematic view of the closure of the present invention when closed.
Fig. 5 is a schematic view of the internal structure of the closure of the present invention when opened.
In the figure: the device comprises a movable frame 1, a beam 11, a reinforcing frame 12, a trolley 13, wheels 14, a water injection well oil pipe 2, a closed ring groove 21, a sleeve 3, a mounting shell 4, a rotary hand crank 41, a rope 42, a separator 43, a winch 44, a sealing module 5, a sealing 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 following figures and specific embodiments:
as shown in fig. 1 to 5, a cementing well cleaning device comprises a cementing well oil pipe 2 and a casing 3 sleeved thereon, wherein a water injection gap is formed between the cementing well oil pipe 2 and the casing 3, the cementing well cleaning device further comprises a movable frame 1, a mounting shell 4, a sealing module 5 and an annular separator 43, the mounting shell 4 is in threaded connection with the center of the top of the movable frame 1, a plurality of ropes 42 extending out of the bottom surface of the mounting shell 4 are coiled 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 semi-circular 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 respectively provided with a synchronizing block 54, the two sides of the inner side of the sealing ring 51 are respectively provided with a fixed block 55, the front ends of the fixed blocks 55 are respectively hinged with a driving rod 56, the two driving rods 56 at 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 is seted up with two closed ring 51 assorted closed ring grooves 21, closed ring 51 sets up in closed ring groove 21, the bottom of hydraulic stem 52 is provided with and is used for driving rolling disc 58 pivoted drive assembly, and the top of hydraulic stem 52 is installed in water injection well oil pipe 2's inside with moving about, the thickness of divider 43 and closed ring 51 all matches with the water injection clearance, be provided with on the installation shell 4 and be used for controlling the flexible control button of hydraulic stem 52, two closed ring 51's the action that opens and shuts are controlled through drive assembly to carry out periodic opening and close to the water injection clearance.
As shown in fig. 1 and 2, the injection well oil pipe 2 is built beside an oil well, and the moving vehicle 1 moves to the position right above the injection well oil pipe 2, so that the mud skin cleaning device is convenient to install; the water injection well is characterized in that a centrifugal pump used for injecting water into the water injection well and a water suction pump used for pumping water are further installed beside the oil pipe 2 of the water injection well, and a large number of small holes are formed in the lower end of the sleeve 3 and used for water exchange of a water-bearing stratum.
As shown in fig. 3, a winding machine 44 for winding and unwinding the rope 42 is disposed in the mounting case 4, and a control switch of the winding machine 44 is disposed on the mounting case 4; the winch 44 controls the lowering length of the rope 42 and thus the height of the divider 43 in the filling gap, so that the closure module 5 is in a closed working environment.
Preferably, the top of the mounting case 4 is provided with a rotary handle 41, so that the mounting can be screw-mounted on the moving frame 1 using the rotary handle 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 movable in the elongated circular ring 6 is disposed at the edge of the outer side surface of the rotating disc 58.
In particular, the closing module 5 is mounted in the closing ring groove 21, and when it is not in use, the two closing rings 51 form a sealing effect on the closing ring groove 21. The telescopic rod 53 can provide the closed ring 51 to move between the closed ring groove 21 and the water injection gap, and when the closed ring is moved into the water injection gap, a controllable water hammer effect is generated in the water injection gap, and mud skins on the pipe wall are cleaned by 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 the periodical telescopic action, the eccentric column 59 moves back and forth in the long circular ring 6, so that the rotating disc 58 is driven to rotate by the eccentric column 59; meanwhile, the rotating plate 58 drives the rotating plate 57 to rotate synchronously through the fixed shaft, so that the end part of the driving rod 56 connected to the rotating plate 57 rotates along with the rotating plate 57, and the driving rod 56 pulls the fixed block 55 to move back and forth periodically, and finally, the two closed rings 51 move between the closed ring groove 21 and the water filling gap periodically.
As shown in fig. 1, the moving vehicle 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 frames 12, and wheels 14 are detachably arranged at the bottom of the trolleys 13. When the mud skin belt cleaning device normally works, 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, the movement generated when mud skin is cleaned is prevented, and the well cleaning process is more stable and safer. Wheels 14 are mounted on the trolley 13 to facilitate movement when changing well-flushing sites.
During the use, install in water injection well oil pipe 2 of closed module 5 to the sleeve pipe 3 in, move the moving frame 1 that threaded connection has installation shell 4 to water injection well oil pipe 2 department, dismantle the wheel 14 of dolly 13, make moving frame 1 firm on 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 to isolate the water injection gap from each other in sections; starting a centrifugal pump to inject water into the oil pipe 2 of the water injection well, starting a water pump to pump water when the water level reaches a cleaning limit, starting two hydraulic rods 52 through a controller and adjusting the telescopic frequency, so that the hydraulic rods 52 control two closed rings 51 to be periodically opened and closed between the closed ring groove 21 and a water injection gap under the set frequency, and a periodic water hammer effect is generated in the water injection gap so as to clean mud skins on the inner wall of the casing 3 and the outer wall of the oil pipe 2 of the water injection well for multiple times; by lowering the separator 43 to different positions, the water injection gap in the separation section is injected with water, pumped and the motion frequency of the closed ring 51 is controlled, so that a water hammer effect reaching a specified effect is generated, the specific well section mud skin is mainly cleaned, and the deep water injection well oil pipe 2 is efficiently cleaned. 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 of the water hammer wave is achieved, and the effect of cleaning the mud skin for many times is achieved.
Claims (5)
1. The utility model provides a water injection well crust belt cleaning device, includes that water injection well oil pipe and cover locate the sleeve pipe on it, form water injection clearance between water injection well oil pipe and the sleeve pipe, its characterized in that: 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 arranged in the mounting shell in a rolling mode, and the bottom end of each rope is connected to the divider; the sealing module comprises a pair of hydraulic rods and a pair of semicircular sealing rings, the middle parts of the inner side surfaces of the two sealing rings are connected through a pair of telescopic rods, the same ends of the two telescopic rods are respectively provided with a synchronous block, the two sides of the inner side of the sealing ring are respectively provided with a fixed block, the front end of each fixed block is hinged with a driving rod, the two driving rods at the same side are respectively hinged to the 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 is seted up with two closed ring assorted closed ring grooves, the closed ring sets up in the closed ring inslot, the bottom of hydraulic stem is provided with and is used for driving rolling disc pivoted drive assembly, and the top of hydraulic stem is installed in water injection well oil pipe's inside with moving about, the thickness of divider and closed ring all with water injection clearance phase-match, be provided with on the installation shell and be used for controlling the flexible control button of hydraulic stem, the hydraulic stem controls the action of opening and shutting of two closed rings through drive assembly to carry out periodic opening and shutting to the water injection clearance.
2. The injection well cement sheath cleaning device according to claim 1, characterized in that: 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. The injection well cement sheath cleaning device according to claim 1, characterized in that: and a winch for winding and unwinding the rope is arranged in the mounting shell.
4. The injection well cement sheath cleaning device according to claim 1, characterized in that: the top of installation shell is provided with rotatory hand.
5. The injection well cement sheath cleaning device according to claim 1, characterized in that: 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 bar frames, 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 true CN114856469A (en) | 2022-08-05 |
| CN114856469B 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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| CN114856469B (en) | 2024-05-14 |
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