CN112160730B - Combined oil field water injection well layered acidification device - Google Patents
Combined oil field water injection well layered acidification device Download PDFInfo
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- CN112160730B CN112160730B CN202011041666.3A CN202011041666A CN112160730B CN 112160730 B CN112160730 B CN 112160730B CN 202011041666 A CN202011041666 A CN 202011041666A CN 112160730 B CN112160730 B CN 112160730B
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- 238000002347 injection Methods 0.000 title claims abstract description 62
- 239000007924 injection Substances 0.000 title claims abstract description 62
- 230000020477 pH reduction Effects 0.000 title claims abstract description 59
- 239000002332 oil field water Substances 0.000 title claims abstract description 33
- 239000004576 sand Substances 0.000 claims abstract description 33
- 239000012530 fluid Substances 0.000 claims abstract description 26
- 239000007788 liquid Substances 0.000 claims abstract description 22
- 239000007921 spray Substances 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 8
- 238000010521 absorption reaction Methods 0.000 claims description 6
- 239000013013 elastic material Substances 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 5
- 239000011261 inert gas Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 11
- 230000000903 blocking effect Effects 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
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- 210000000078 claw Anatomy 0.000 description 2
- 230000000994 depressogenic effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 239000011358 absorbing material Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000003190 augmentative effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
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- 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
- E21B37/06—Methods or apparatus for cleaning boreholes or wells using chemical means for preventing or limiting, e.g. eliminating, the deposition of paraffins or like substances
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- 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
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
- E21B41/005—Waste disposal systems
- E21B41/0057—Disposal of a fluid by injection into a subterranean formation
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- 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
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
- E21B41/0078—Nozzles used in boreholes
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
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- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Earth Drilling (AREA)
Abstract
The invention belongs to the technical field of oilfield acidification equipment, and particularly relates to a combined oilfield water injection well layered acidification device which comprises a plurality of acidification units which are detachably connected; the acidification unit comprises an outer pipe and an inner pipe, and the inner pipe is coaxially sleeved in the outer pipe; the acidizing fluid injection pipe is arranged in a cavity reserved between the outer pipe and the inner pipe; the liquid inlet end of the spray head is communicated with the acidizing fluid injection pipe, and the liquid outlet end of the spray head is embedded in the pipe wall of the outer pipe; the lower end of the inner pipe is exposed outside the cavity, and the connecting plate is hermetically connected with the bottom of the cavity; the telescopic positioning assembly and the joint assembly are arranged on the periphery of the lower end of the inner pipe and located below the connecting plate. The acidizing units which are detachably connected are arranged and used for being positioned at different stratum heights in the sand control pipe in the oil field water injection well, can be connected or distributed discretely for use, has the plugging removal effect on the sand control pipe with different stratum heights, and is strong in pertinence, high in efficiency and capable of saving acidizing fluid.
Description
Technical Field
The invention belongs to the technical field of oilfield acidizing equipment, and particularly relates to a combined oilfield water injection well layered acidizing device.
Background
Oil field water injection or oil extraction mainly depends on a sand control pipe arranged in a water injection well, and oil permeates into the sand control pipe and is then exploited. In the long-term exploitation process, the sand control pipe is blocked, and acidification and blockage removal are needed to restore and improve the permeability of the stratum so as to reduce the resistance of oil flowing into a well or the resistance of water injection and further increase the yield of the oil well. The purpose of water well augmented injection.
In the prior art, an inner cavity flushing and rotating water jet flow blockage removing process of a sand control pipe is usually adopted, and acidizing fluid permeates into a stratum in a flushing or rotating acidizing mode to achieve the blockage removing effect of the sand control pipe. However, the technology does not distinguish the blockage situation of sand control pipes with different stratum heights, so that the adopted technology is usually full-pipe blockage removal operation. In actual production, however, different sections of the sand control pipe are different in blocking conditions, some positions may not be blocked, some positions may be severely blocked, and the required acidification blocking removal time is also different.
Therefore, there is a need to develop a layered acidification device.
Disclosure of Invention
In order to solve the technical problem, the invention provides a combined oil field water injection well layered acidification device.
The invention aims to provide a combined oil field water injection well layered acidification device, which comprises a plurality of acidification units which are detachably connected, wherein each acidification unit comprises:
the outer pipe is used for being positioned at a specific stratum height in the sand control pipe in the oilfield water injection well;
the inner pipe is coaxially sleeved inside the outer pipe;
an acidizing fluid injection pipe which is arranged in a cavity reserved between the outer pipe and the inner pipe;
the liquid inlet end of the spray head is communicated with the acidizing fluid injection pipe, and the liquid outlet end of the spray head is embedded in the pipe wall of the outer pipe;
the lower end of the inner pipe is exposed outside the cavity, and the connecting plate is connected with the bottom of the cavity in a sealing mode;
the telescopic positioning assembly is arranged on the periphery of the lower end of the inner pipe and is positioned below the connecting plate;
and the joint assembly is arranged on the periphery of the lower end of the inner pipe and is positioned below the positioning assembly.
Preferably, the above-mentioned combined oilfield water injection well layered acidification device, the positioning assembly includes:
the telescopic air bag is sleeved outside the inner pipe;
and the driving device is connected between the inner pipe and the telescopic air bag and is used for driving the telescopic air bag to stretch and retract.
Preferably, in the combined layered acidification device for the oilfield water injection well, the telescopic air bag is made of an elastic material, and inert gas or the elastic material is filled in the telescopic air bag.
Preferably, the combined oilfield water injection well layered acidification device is characterized in that the telescopic air bag is provided with a plurality of micropores, and the inside of the telescopic air bag is filled with a water absorbing material.
Preferably, the above-mentioned combined oilfield water injection well layered acidification device, the positioning assembly includes:
the outer telescopic ring is formed by surrounding a plurality of outer arc plates;
the inner telescopic ring is formed by surrounding a plurality of inner arc-shaped plates and is positioned in the outer telescopic ring, the inner arc-shaped plates and the outer arc-shaped plates correspond to each other in the radial direction, and telescopic parts are connected between the adjacent inner arc-shaped plates and the adjacent outer arc-shaped plates together;
and the driving device is connected between the inner pipe and the inner telescopic ring and is used for controlling the inner telescopic ring and the outer telescopic ring to stretch.
Preferably, the combined oilfield water injection well layered acidification device further comprises a foot claw which is arranged on the outer arc-shaped plate.
Preferably, the above-mentioned combined oilfield injection well layered acidification device, the driving device includes:
the fixed ends of the at least two electric telescopic rods are fixedly arranged on the outer wall of the inner pipe, and the movable ends of the at least two electric telescopic rods are connected with the telescopic air bag or the inner arc-shaped plate;
and the controller is in wireless connection with each electric telescopic rod and is used for controlling the electric telescopic rods to stretch.
Preferably, the above-mentioned combined oilfield water injection well layered acidification device, the joint assembly includes:
the top of the hard connecting pipe is fixedly and hermetically connected with the bottom of the inner pipe and is communicated with the cavity;
one end of the connecting hose with openings at two ends is communicated with the bottom of the connecting hard pipe, and the other end of the connecting hose is detachably communicated with a liquid inlet at the top of the acidizing liquid injection pipe of the acidizing unit positioned below the connecting hose;
the liquid outlet at the bottom of the acidification unit positioned at the bottommost end of the acidification unit injection pipe is a closed end.
Preferably, the combined layered acidification device for the oilfield water injection well further comprises an acoustic sensor, wherein the acoustic sensor is mounted on the outer wall of the outer pipe or the outer wall of the hard pipe and is wirelessly connected with the controller;
and the alarm is connected with the controller and used for giving an alarm.
Preferably, in the above layered acidification device for a combined oilfield water injection well, the acidification liquid injection pipe is spirally distributed around the outer wall of the inner pipe.
Compared with the prior art, the combined oil field water injection well layered acidification device provided by the invention has the following beneficial effects:
1. the acidizing units are detachably connected with each other, are used for being positioned at different stratum heights in the sand control pipe in the oilfield water injection well, can be used after being connected with each other and also can be discretely distributed in the sand control pipe for use, so that the blockage removing effect of the sand control pipe with different stratum heights can be achieved, the pertinence is strong, the efficiency is high, and acidizing fluid can be saved.
2. The invention detects the blocking position by arranging the acoustic wave sensor, can quickly identify the blocking position, can reduce the acidification time of the non-blocking part of the sand control pipe, prolongs the acidification time of the seriously blocked part, improves the maximum utilization rate of the device and resources, and is environment-friendly.
3. By arranging the water absorption material, the acidizing fluid is recycled, and the effect of recycling resources is achieved.
4. Through setting up the heliciform acidizing fluid injection tube to form the spiral and spray the effect, carry out 360 degrees unblock operations to the sand control pipe.
Drawings
FIG. 1 is a schematic diagram of the ligation of an acidification unit according to the invention;
FIG. 2 is a schematic view of the positioning assembly of the acidification unit of the present invention in an extended configuration;
FIG. 3 is a schematic diagram of the exterior structure of the acidification unit of the present invention;
FIG. 4 is a schematic structural diagram of a positioning assembly in an acidification unit according to embodiment 1 of the present invention;
fig. 5 is a schematic structural diagram of a positioning assembly in an acidification unit according to embodiment 3 of the present invention.
Detailed Description
In order that those skilled in the art will better understand the technical solutions of the present invention to be implemented, the present invention will be further described with reference to the following specific embodiments and accompanying drawings.
In the present invention, "top, upper end" is the top, upper end shown directly in fig. 1; the "bottom, lower end" is the bottom, lower end shown directly in fig. 1.
Example 1
The utility model provides a modular oil field water injection well layering acidizing device, as shown in fig. 1-4, can dismantle the connection between the adjacent acidizing unit, these acidizing units are used for fixing a position in the oil field water injection well sand control intraductal different stratum height department, and they can connect the back and use, also can discrete distribution use in the sand control intraductal to reach the unblock effect to different stratum height sand control pipe, with strong points, efficient, can also practice thrift acidizing fluid.
The acidification unit comprises: the outer tube 1, outer tube 1 is used for fixing a position the intraductal specific stratum height department of sand control in oil field water injection well, the inside coaxial cover of outer tube 1 is equipped with inner tube 2, outer tube 1 with it can place 3 cavitys of acidizing fluid injection pipe to leave between the inner tube 2, acidizing fluid injection pipe 3 is followed 2 axial laying of inner tube. The acidizing fluid injection pipe 3 is provided with a spray head 31 capable of spraying acidizing fluid, the liquid inlet end of the spray head 31 is communicated with the acidizing fluid injection pipe 3, and the liquid outlet end of the spray head is inlaid on the pipe wall of the outer pipe 1, and the acidizing fluid can be sprayed outside the outer pipe 1. Preferably, the spray head 31 is flush with the outer wall of the outer tube 1. The lower extreme of inner tube 2 exposes outside the cavity, cavity bottom sealing connection has annular connecting plate 4, connecting plate 4 cover is established outside inner tube 2, just connecting plate 4 will outer tube 1 with sealing connection between the inner tube 2 prevents that acidizing fluid from reducing the waste of acidizing fluid in the inner tube 2 in outer tube 1 infiltration inner tube 2. And a telescopic positioning component and a non-telescopic joint component are sequentially arranged at the position, which surrounds the periphery of the lower end of the inner pipe 2 and is exposed outside the cavity, from top to bottom. The outer pipe 1 may be used to be positioned at a specific formation level within the sand control pipe when the positioning assembly is extended, and the outer pipe 1 may be separated from the sand control pipe when it is contracted.
Referring to fig. 4, the positioning assembly comprises electric telescopic rods 5 and a telescopic airbag 51 which are sequentially sleeved from inside to outside, the number of the electric telescopic rods 5 is at least two, all the electric telescopic rods 5 are uniformly distributed on the outer wall of the inner tube 2, the fixed ends of the electric telescopic rods 5 are fixedly installed on the outer wall of the inner tube 2, and the movable ends are fixed or detachably installed at one end of an installation seat through bolts; the other end of the mounting seat is fixed on the inner side wall of the telescopic air bag 51.
The positioning assembly further comprises a controller used for driving the positioning assembly to stretch, the controller is wirelessly connected with the electric telescopic rod 5 and used for controlling the electric telescopic rod to work, and the controller is further electrically connected with a plug used for being connected with a power socket through an electric lead so as to supply power to equipment.
The telescopic air bag 51 is made of elastic materials, and inert gas is filled in the telescopic air bag, so that the safety of the inert gas is high. Or the telescopic air bag 51 is filled with solid materials such as elastic rubber. When the controller controls the electric telescopic rod 5 to extend, the telescopic air bag 51 can move to be tightly abutted against the sand control pipe, and the whole acidification unit is positioned at a specific position of the sand control pipe under the action of friction force.
The joint assembly comprises a connecting hard pipe 6 with two end ports closed and a connecting hose 7 with two end openings, the top of the connecting hard pipe 6 is fixedly and hermetically connected with the bottom of the inner pipe 2, the top of the connecting hard pipe 6 is communicated with the outer pipe 1 and the cavity between the inner pipes 2, the bottom of the connecting hose is communicated with one end of the connecting hose 7, and the other end of the connecting hose 7 is detachably communicated with a liquid inlet at the top of the acidification liquid injection pipe 3 of the acidification unit below the connecting hose. In particular to a connecting hose 7 which is connected with the mouth of the acidification liquid injection pipe 3 through a solenoid, and a sealing ring is arranged between the solenoid and the solenoid.
The liquid outlet at the bottom of the acidification liquid injection pipe 3 of the acidification unit positioned at the bottommost end is a closed end. The bottom of the connecting hard pipe 6 can be matched and butted with the outer pipe 1 and the inner pipe 2 of the adjacent acidification unit. Preferably, it is provided with annular depressed groove to connect hard pipe 6, outer tube 1 the upper surface of inner tube 2 flushes, just outer tube 1 can the joint in the annular depressed groove.
The adjacent acidification units are connected through a connecting hose 7, one acidification unit is placed on the sand control pipe and is positioned to a required position, then the other acidification unit is arranged below, the two acidification units can be distributed discretely, and the connecting hose 7 extends at the moment to play a role in communicating the acidification liquid injection pipes 3 of the adjacent acidification units. The two acidification units can also be matched and butted, and the connecting hose 7 is contracted and positioned in a cavity between the outer pipe 1 and the inner pipe 2 below. The acidification unit located at the lowermost end is not provided with a connection hose 7.
This embodiment still detects the jam position through setting up acoustic sensor 8, because the different situation of sand control pipe different positions appear and block up the back, its sound wave takes place different changes, detects these changes through acoustic sensor 8, can discern the jam position fast. This embodiment is installed sound wave sensor 8 on the outer wall of outer tube 1 or the outer wall of connecting hard pipe 6, sound wave sensor 8 with controller wireless connection, still be connected with on the controller and be used for control the switch of sound wave sensor 8 work and the alarm that is used for the warning. When the acidizing unit is transferred to the sand control pipe lowest end along the sand control pipe, then moves upwards, opens sound wave sensor 8 and detects the sound wave change, then reports to the police when finding the jam position, then fixes a position the acidizing unit in this department.
Example 2
The utility model provides a modular oil field water injection well layering acidizing device, the structure with embodiment 1 is the same basically, the difference lies in, be provided with a plurality of micropores on the flexible gasbag 51, flexible gasbag 51 is inside to be filled with water absorption material, sprays to the sand control pipe unnecessary acidizing fluid along its inner wall flow to water absorption material in, is absorbed, prevents too much acidizing fluid retention stratum, water absorption material selects the material of physical adsorption effect, can resolve recovery acidizing fluid, reaches resource recycle's effect, for example the sponge material, can absorb water also can extrude water.
And a distance of 0-2mm is reserved between the connecting hard pipe 6 and the positioning assembly, so that redundant acidizing fluid seeped out from the telescopic air bag 51 can be received, and the effect of saving resources is achieved. Preferably, the diameter of the connecting hard pipe 6 is 0.1-20mm smaller than the inner diameter of the sand control pipe.
Example 3
The utility model provides a modular oil field water injection well layering acidizing device, the structure with embodiment 1 is basically the same, the difference lies in, locating component structure is as shown in figure 5, including the electric telescopic handle 5, interior telescopic ring and the outer telescopic ring of establishing of cover in proper order from inside to outside. The inner telescopic ring is formed by surrounding a plurality of inner arc-shaped plates 52, the outer telescopic ring is formed by surrounding a plurality of outer arc-shaped plates 53, and the electric telescopic rod 5, the inner arc-shaped plates 52 and the outer arc-shaped plates 53 are identical in quantity and are in one-to-one correspondence. The inner arc-shaped plate 52 and the outer arc-shaped plate 53 correspond to each other along the radial direction, the fixed end of the electric telescopic rod 5 is fixedly arranged on the outer wall of the inner tube 2, and the movable end of the electric telescopic rod is fixedly arranged on the inner side wall of the inner arc-shaped plate 52 corresponding to the fixed end. The adjacent inner arc-shaped plates 52 and the outer arc-shaped plates 53 are connected with each other by a telescopic part 54, and the telescopic parts 54 are made of springs, elastic rubber or other elastic materials.
When the controller drives the electric telescopic rod 5 to extend, the inner arc-shaped plate 52 and the outer arc-shaped plate 53 are unfolded along with the controller, the telescopic component 54 is also stretched along with the controller, the outer arc-shaped plate 53 can move to be tightly abutted against the sand control pipe, and the whole acidification unit is positioned at a specific position of the sand control pipe under the action of friction force. The outer arc plate 53 may be further provided with claws or the like to increase friction force, thereby improving stability of positioning effect.
Preferably, materials such as adsorption cotton and sponge with water absorption and certain elasticity can be arranged between the inner telescopic ring and the outer telescopic ring so as to realize the function of adsorbing redundant acidizing fluid.
Example 4
The utility model provides a modular oil field water injection well layering acidizing device, the structure with embodiment 1 is the same basically, the difference lies in, acidizing fluid injection pipe 3 is around 2 outer walls of inner tube are the heliciform and distribute to form the spiral and spray the effect, carry out 360 degrees unblock operations to the sand control pipe.
It should be noted that, the connection relation of the components not specifically mentioned in the present invention is the default of the prior art, and the connection relation of the structures is not described in detail since it does not relate to the invention point and is a common application of the prior art.
It should be noted that, when the present invention relates to a numerical range, it should be understood that two endpoints of each numerical range and any value between the two endpoints can be selected, and since the steps and methods adopted are the same as those in the embodiment, in order to prevent redundancy, the present invention describes a preferred embodiment. While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. The utility model provides a modular oil field water injection well layering acidizing device which comprises a plurality of acidizing units of dismantling the connection, the acidizing unit includes:
the outer pipe (1) is used for being positioned at a specific stratum height in the sand control pipe in the oilfield water injection well;
the inner pipe (2) is coaxially sleeved inside the outer pipe (1);
the acidizing fluid injection pipe (3) is arranged in a cavity reserved between the outer pipe (1) and the inner pipe (2);
the liquid inlet end of the spray head (31) is communicated with the acidizing fluid injection pipe (3), and the liquid outlet end of the spray head is embedded in the pipe wall of the outer pipe (1);
the lower end of the inner pipe (2) is exposed outside the cavity, and the connecting plate (4) is connected with the bottom of the cavity in a sealing mode;
the telescopic positioning assembly is arranged on the periphery of the lower end of the inner pipe (2) and is positioned below the connecting plate (4);
the joint assembly is arranged on the periphery of the lower end of the inner pipe (2) and is positioned below the positioning assembly.
2. The modular oilfield water injection well layered acidizing device of claim 1, wherein the positioning assembly comprises:
a telescopic air bag (51) sleeved outside the inner tube (2);
and the driving device is connected between the inner tube (2) and the telescopic air bag (51) and is used for driving the telescopic air bag (51) to stretch and contract.
3. The combined oilfield water injection well layered acidification device according to claim 2, wherein the telescopic air bag (51) is made of elastic material, and inert gas or elastic material is filled in the telescopic air bag.
4. The combined oilfield water injection well layered acidification device according to claim 3, wherein the expansion air bag (51) is provided with a plurality of micropores, and the expansion air bag (51) is filled with a water absorption material.
5. The modular oilfield water injection well layered acidizing device of claim 1, wherein the positioning assembly comprises:
the outer telescopic ring is formed by surrounding a plurality of outer arc plates (53);
the inner telescopic ring is formed by surrounding a plurality of inner arc-shaped plates (52) and is positioned in the outer telescopic ring, the inner arc-shaped plates (52) and the outer arc-shaped plates (53) are in radial correspondence, and telescopic parts (54) are connected between the adjacent inner arc-shaped plates (52) and the adjacent outer arc-shaped plates (53) together;
and the driving device is connected between the inner pipe (2) and the inner telescopic ring and is used for controlling the inner telescopic ring and the outer telescopic ring to stretch.
6. The modular oilfield injection well layered acidizing device according to claim 5, further comprising a foot mounted on the outer arc plate (53).
7. The modular oilfield injection well zonal acidification device of any one of claims 2 to 4, wherein the drive means comprises:
the fixed ends of the at least two electric telescopic rods (5) are fixedly arranged on the outer wall of the inner tube (2), and the movable ends of the electric telescopic rods are connected with the telescopic air bag (51);
and the controller is respectively in wireless connection with each electric telescopic rod (5) and is used for controlling the electric telescopic rods (5) to stretch.
8. The modular oilfield water injection well zonal acidification device of claim 7, wherein the joint assembly comprises:
the top of the hard connecting pipe (6) is fixedly and hermetically connected with the bottom of the inner pipe (2) and is communicated with the cavity;
the two ends of the connecting hose (7) are open, one end of the connecting hose is communicated with the bottom of the connecting hard pipe (6), and the other end of the connecting hose is detachably communicated with a liquid inlet at the top of the acidification liquid injection pipe (3) of the acidification unit positioned below the connecting hose;
the liquid outlet at the bottom of the acidification liquid injection pipe (3) of the acidification unit positioned at the bottommost end is a closed end.
9. The combined oilfield injection well layered acidification device according to claim 8, further comprising an acoustic sensor (8) mounted on the outer wall of the outer pipe (1) or the outer wall of the hard pipe (6) and wirelessly connected to the controller;
and the alarm is connected with the controller and used for giving an alarm.
10. The modular oilfield water injection well layered acidizing device according to claim 1, wherein the acidizing fluid injection pipe (3) is helically distributed around the outer wall of the inner pipe (2).
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| CN202011041666.3A CN112160730B (en) | 2020-09-28 | 2020-09-28 | Combined oil field water injection well layered acidification device |
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| CN114810010B (en) * | 2022-04-21 | 2022-12-20 | 西安奥德石油工程技术有限责任公司 | Small-displacement continuous acidizing and plug removing equipment system for oil field water injection well |
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| DK178114B1 (en) * | 2006-12-29 | 2015-06-01 | Mærsk Olie Og Gas As | Ceramic display screen |
| CN201025020Y (en) * | 2007-04-30 | 2008-02-20 | 陈菲 | Controllable acid distribution pipe |
| CN104499953A (en) * | 2014-12-22 | 2015-04-08 | 江苏中冶能源设备制造有限公司 | Anticorrosion oil casing |
| CN205330619U (en) * | 2016-02-02 | 2016-06-22 | 陕西宏丰石油工程技术有限公司 | Row device is returned in oil -water well acidizing |
| CN208885251U (en) * | 2018-08-28 | 2019-05-21 | 西安步锐石油工程技术有限公司 | A kind of oil well repairing operation gas and water mixer |
| CN209670945U (en) * | 2019-03-22 | 2019-11-22 | 甘肃普瑞斯石油科技有限公司 | A kind of grease well acidizing returns arranging device |
| CN110836109A (en) * | 2019-12-18 | 2020-02-25 | 新疆恒智伟业石油工程技术开发有限公司 | Open hole segmented acid fracturing easy drilling and grinding well completion production string and working method thereof |
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