CN113294104B - Hydrate pulse jet oscillation tool - Google Patents

Hydrate pulse jet oscillation tool Download PDF

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Publication number
CN113294104B
CN113294104B CN202110627143.5A CN202110627143A CN113294104B CN 113294104 B CN113294104 B CN 113294104B CN 202110627143 A CN202110627143 A CN 202110627143A CN 113294104 B CN113294104 B CN 113294104B
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China
Prior art keywords
inner pipe
energy storage
hydrate
joint
pipe
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Expired - Fee Related
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CN202110627143.5A
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Chinese (zh)
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CN113294104A (en
Inventor
宁波
于彦江
秦绪文
申凯翔
周佳维
黄芳飞
冯起赠
罗志远
欧芬兰
刘双莹
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Guangzhou Marine Geological Survey
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Guangzhou Marine Geological Survey
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Application filed by Guangzhou Marine Geological Survey filed Critical Guangzhou Marine Geological Survey
Priority to CN202110627143.5A priority Critical patent/CN113294104B/en
Publication of CN113294104A publication Critical patent/CN113294104A/en
Application granted granted Critical
Publication of CN113294104B publication Critical patent/CN113294104B/en
Expired - Fee Related legal-status Critical Current
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    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B21/00Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
  • Nozzles (AREA)

Abstract

The invention discloses a hydrate pulse jet oscillation tool, which comprises an energy storage joint, a pulse oscillation generator and an ejector, wherein the pulse oscillation generator is communicated with the energy storage joint; the energy storage joint comprises a first outer barrel, a first inner pipe fixedly arranged in the first outer barrel, an energy storage spring sleeved outside the first inner pipe, and a sealing piston slidably sleeved outside the first inner pipe and positioned at the second end of the energy storage spring, wherein the sealing piston is hermetically arranged in a first annular space between the first inner pipe and the first outer barrel; the pulse oscillation generator comprises a second outer cylinder and a second inner pipe, and a spiral rotor which is rotatably arranged in the second inner pipe is arranged in the second inner pipe.

Description

Hydrate pulse jet oscillation tool
Technical Field
The invention relates to the field of hydrate exploitation, in particular to a hydrate pulse jet oscillation tool.
Background
The hydrate is mainly applied to seabed and land permafrost layers, the mud content is high, the particles are fine, natural gas and water generated along with the decomposition of the hydrate in the process of exploitation are easy to cause the migration of fine particles of the stratum in the process of reservoir transportation, the blockage of a near wellbore and the flooding in the wellbore are caused, the pulse jet oscillation blockage removal technology is applied, the pulse impact jet is utilized to generate strong periodic pressure alternating action on the reservoir near the wellbore, the superfine particles in the wall of a pore channel of the reservoir are promoted to loosen, peel off and separate, so that the pore channel is dredged, the problem of the blockage of the superfine particles of the hydrate reservoir is solved, the blockage of the near wellbore is removed, the permeability of the reservoir is enhanced, and the yield of a single well is improved.
However, most of the existing pulse jet oscillation tools are controlled by electronic components, the operation of the existing pulse jet oscillation tools is easily influenced by the external environment, and the performance stability is poor.
Disclosure of Invention
The invention aims at the defects of the prior art and provides a hydrate pulse jet oscillation tool.
The technical scheme adopted by the invention for solving the technical problems is as follows: constructing a hydrate pulsed jet oscillation tool comprising an energy storage joint, a pulsed oscillation generator in communication with the energy storage joint, and an injector in communication with the pulsed oscillation generator;
The energy storage joint comprises a first outer barrel, a first inner pipe fixedly arranged in the first outer barrel, an energy storage spring sleeved outside the first inner pipe, and a sealing piston slidably sleeved outside the first inner pipe and positioned at the second end of the energy storage spring, wherein the sealing piston is hermetically arranged in a first annular space between the first inner pipe and the first outer barrel;
the pulse oscillation generator comprises a second outer barrel and a second inner barrel, wherein a spiral rotor which can be rotatably arranged in the second inner barrel is arranged in the second inner barrel, an upper rotary valve which can be rotatably arranged in the second outer barrel and a lower fixed valve which is fixedly arranged in the second outer barrel and is in sealing fit with the upper rotary valve are arranged at the second end of the second outer barrel, the second end of the spiral rotor is connected with the upper rotary valve and drives the upper rotary valve to rotate, at least one first through hole is arranged on the upper rotary valve, and at least one second through hole which can be communicated with the first through hole is arranged on the lower fixed valve at a position corresponding to the first through hole;
The ejector is provided with at least one nozzle.
In the hydrate pulse jet oscillation tool, a spring seat movably sleeved outside the first inner pipe is further arranged outside the first inner pipe, and the spring seat is located between the energy storage spring and the sealing piston.
In the hydrate pulsed jet oscillation tool, the first end of the first outer cylinder and the first end of the first inner pipe are integrally formed to form an upper joint.
In the hydrate pulsed jet oscillation tool, a breathing hole communicated with the first annular space is arranged on the side wall of the first outer cylinder at a position close to the stopping part, and the breathing hole penetrates through the side wall of the first outer cylinder.
In the hydrate pulsed jet oscillation tool, the second end of the energy storage joint is connected and communicated with the first end of the pulsed oscillation generator through a shunt joint.
In the hydrate pulse jet oscillation tool, the shunt joint comprises a main joint connected with and communicated with the second end of the first outer cylinder, a main water pipe communicated with the main joint, and a shunt pipe communicated with the main joint, wherein the first end of the main water pipe is communicated with the main joint, the second end of the main water pipe is connected with and communicated with the first end of the second inner pipe, the first end of the shunt pipe is communicated with the main joint, and the second end of the shunt pipe is communicated with the second annular space between the second outer cylinder and the second inner pipe.
In the hydrate pulse jet oscillation tool, the number of the three shunt pipes is three, and the three shunt pipes are arranged on the periphery of the main water pipe at equal intervals.
In the hydrate pulse jet oscillation tool, the bottom end of the spiral rotor is connected with the upper swing valve through a connecting bearing.
In the hydrate pulse jet oscillation tool, at least one flow guide hole is arranged on the side wall of the second inner pipe, and the flow guide hole is communicated with the second inner pipe and the second annular space.
In the hydrate pulse jet oscillation tool, the first end of the ejector is connected and communicated with the second end of the second outer cylinder through the lower connector, six nozzles are arranged on the ejector, and the six nozzles are uniformly distributed on the outer side wall of the nozzle at equal intervals.
The hydrate pulse jet oscillation tool has the following beneficial effects: when the hydrate pulse jet oscillation tool is implemented, water flow enters the energy storage joint from the first end of the first inner pipe and flows through the second inner pipe, the spiral rotor is driven to rotate in the second inner pipe when the water flow passes through the second inner pipe, the spiral rotor drives the upper disk valve connected with the spiral rotor to rotate in the rotating process, when the first through hole and the second through hole are not communicated, the water flow cannot enter the ejector to be sprayed outwards after flowing into the energy storage joint and the pulse oscillation generator, so that the water pressure in the energy storage joint is gradually increased, the sealing piston moves towards the first end of the first inner pipe under the pressure of the water, and the energy storage spring is compressed to form energy storage. When the upper disk valve rotates to the first through hole and the second through hole to be communicated, water in the energy storage joint and the pulse oscillation generator can enter the ejector from the first through hole and the second through hole, the water is ejected outwards through a nozzle of the ejector, at the moment, the water pressure in the energy storage joint is reduced, the energy storage spring rebounds under the action of self elastic restoring force, the spring pushes the sealing piston to move towards the direction of the second end of the first inner pipe, the effect of pressurizing and extruding water flow is achieved, energy storage and energy release are achieved, the pressure of jet flow fluid is enhanced, and a better perforation effect is achieved. The pulse jet oscillation tool used by the invention has the periodic interception function through the upper disk fixed valve and the lower disk fixed valve inside the tool to form local high pressure, then the local high pressure is quickly released to form certain pressure pulse oscillation, and the pulse jet oscillation acting force is improved and the blockage removal effect is enhanced by combining the energy storage spring pressurization mechanism inside the tool. The invention has simple structure, stable and reliable performance, no complex electronic components and less influence by the external environment.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic structural view of a hydrate pulsed jet oscillation tool of the present invention;
fig. 2 is a schematic structural diagram of an upper disk valve and a lower disk fixed valve in the hydrate pulse jet oscillation tool.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1 and 2, in the first embodiment of the hydrate pulsed jet oscillation tool of the present invention, the pulsed jet oscillation tool 10 includes an energy storage joint 11, a pulsed oscillation generator 12 in communication with the energy storage joint 11, and an injector 13 in communication with the pulsed oscillation generator 12.
The energy storage joint 11 includes a first outer cylinder 14, a first inner tube 15 fixedly disposed in the first outer cylinder 14, an energy storage spring 16 sleeved outside the first inner tube 15, and a sealing piston 17 slidably sleeved outside the first inner tube 15 and located at a second end of the energy storage spring 16, wherein the sealing piston 17 is hermetically disposed in a first annular space 18 between the first inner tube 15 and the first outer cylinder 14, a first end of the first inner tube 15 is fixedly connected to a first end of the first outer cylinder 14, a second end of the first inner tube 15 is provided with a positioning joint 19 for stopping the sealing piston 17, and a stopping portion 20 for stopping the first end of the energy storage spring 16 is fixedly disposed between a middle portion of the first inner tube 15 and a middle portion of the first outer cylinder 14.
When the sealing piston 17 is subjected to water pressure, it can move toward the first end of the first inner tube 15, and at this time, the energy storage spring 16 is compressed to store energy. At the moment that water is released, the energy storage spring 16 rebounds under the action of self elastic restoring force, and the spring pushes the sealing piston 17 to move towards the direction of the second end of the first inner pipe 15, so that the function of pressurizing and extruding water flow is achieved, energy storage and energy release are achieved, the pressure of jet flow fluid is increased, and a better perforation effect is achieved, which is described in detail later.
The pulse oscillation generator 12 includes a second outer tube 21 and a second inner tube 22, a spiral rotor 23 rotatably disposed in the second inner tube 22 is disposed in the second inner tube 22, an upper disk valve 24 rotatably disposed in the second outer tube 21 and a lower disk fixed valve 25 fixedly disposed in the second outer tube 21 and hermetically engaged with the upper disk valve 24 are disposed at a second end of the second outer tube 21, the second end of the spiral rotor 23 is connected to the upper disk valve 24 and drives the upper disk valve 24 to rotate, the upper disk valve 24 is provided with at least one first through hole 26, and at least one second through hole 27 capable of being communicated with the first through hole 26 is disposed at a position corresponding to the first through hole 26 on the lower disk fixed valve 25.
When water flow enters the second inner pipe 22 from the first end of the second inner pipe 22, the water flow impacts the spiral rotor 23, and the spiral rotor 23 is driven by the water flow to rotate continuously in the second inner pipe 22, so that the purpose of driving the upper spiral valve 24 to rotate continuously is achieved.
Preferably, there are two first through holes 26 symmetrically disposed on both sides of the upper disk valve 24, and one second through hole 27 corresponding to the first through hole 26.
The ejector 13 is provided with at least one nozzle 28.
When the hydrate pulse jet oscillation tool 10 is implemented, water flow enters the energy storage joint 11 from the first end of the first inner pipe 15 and flows through the second inner pipe 22, the water flow drives the spiral rotor 23 to rotate in the second inner pipe 22 when passing through the second inner pipe 22, the spiral rotor 23 drives the upper disk valve 24 connected with the spiral rotor to rotate in the rotating process, when the first through hole 26 and the second through hole 27 are not communicated, the water flow cannot enter the ejector 13 to be ejected outwards after flowing into the energy storage joint 11 and the pulse oscillation generator 12, so that the water pressure in the energy storage joint 11 is gradually increased, the sealing piston 17 is moved towards the first end of the first inner pipe 15 under the pressure of the water, and the energy storage spring 16 is compressed to form energy storage. When the upper disc valve 24 rotates to the first through hole 26 and the second through hole 27 to be communicated, water in the energy storage joint 11 and the pulse oscillation generator 12 can enter the ejector 13 from the first through hole 26 and the second through hole 27 and is ejected outwards through the nozzle 28 of the ejector 13, at the moment, the water pressure in the energy storage joint 11 is reduced, the energy storage spring 16 rebounds under the action of self elastic restoring force, the spring pushes the sealing piston 17 to move towards the second end direction of the first inner tube 15, the effect of pressurizing and extruding water flow is achieved, energy storage and energy release are achieved, the pressure of ejected jet fluid is enhanced, and a better perforation effect is achieved. The pulse jet oscillation tool 10 used in the invention has a periodic interception effect through the upper disk fixed valve 24 and the lower disk fixed valve 25 in the tool to form local high pressure, then the local high pressure is quickly released to form certain pressure pulse oscillation, and the pulse jet oscillation acting force is improved and the blockage removal effect is enhanced by combining the energy storage spring 16 pressurization mechanism in the tool. The invention has simple structure, stable and reliable performance, no complex electronic components and less influence by the external environment.
In order to avoid the damage of the spring to the sealing piston 17, a spring seat 29 movably sleeved outside the first inner tube 15 is further arranged outside the first inner tube 15, and the spring seat 29 is located between the energy storage spring 16 and the sealing piston 17. In the process that the spring is compressed or rebounded, the energy storage spring 16 pushes the sealing piston 17 through the spring seat 29, and the effect of preventing the spring from damaging the sealing piston 17 is achieved.
In the present embodiment, the first end of the first outer tube 14 and the first end of the first inner tube 15 are integrally formed as an upper joint 30. In other embodiments, the first end of the first outer cylinder 14 and the first end of the first inner tube 15 can be fixedly connected by other fixing methods such as bonding, welding, screwing, etc.
Further, a breathing hole 38 is disposed on the sidewall of the first outer barrel 14 near the stop portion 20 and is communicated with the first annular space 18, and the breathing hole 38 penetrates through the sidewall of the first outer barrel 14.
During the compression of the charging spring 16, the sealing piston 17 moves in the first annular space 18 and the air located in the first annular space 18 is forced out of the breathing orifice 38. During the extension of the charging spring 16, the sealing piston 17 moves in the first annular space 18, and ambient air is sucked into the first annular space 18 from the breathing hole 38. By providing the breathing hole 38, interference of atmospheric pressure on the movement of the sealing piston 17 can be avoided.
In the present embodiment, the second end of the energy storage joint 11 is connected to and communicates with the first end of the pulse oscillation generator 12 through a shunt joint 39. The flow dividing joint 39 comprises a main joint 31 connected to and communicating with the second end of the first outer barrel 14, a main water pipe 32 communicating with the main joint 31, and a flow dividing pipe 33 communicating with the main joint 31, wherein a first end of the main water pipe 32 communicates with the main joint 31, a second end of the main water pipe 32 is connected to and communicating with a first end of the second inner pipe 22, a first end of the flow dividing pipe 33 communicates with the main joint 31, and a second end of the flow dividing pipe 33 communicates with the second annular space 36 between the second outer barrel 21 and the second inner pipe 22. Preferably, when the tap 39 is connected to the pulse generator 12, the top end of the screw rotor 23 is rotatably inserted into the second end of the main water pipe 32, and a water supply amount is left between the top end of the screw rotor 23 and the main water pipe 32 to enter the water inlet portion of the second inner pipe 22.
After the water flow enters the tap 39 from the energy storage tap 11, part of the water flows through the main water pipe 32 to the second inner pipe 22, which functions to drive the screw rotor 23, and the other part of the water flows through the tap 33 to the second annular space 36, and the two water flows respectively flow through different channels to the position of the upper disk valve 24 at the second end of the pulse oscillation generator 12.
In this embodiment, it is preferable that the number of the branch pipes 33 is three, and the three branch pipes 33 are disposed at equal intervals on the periphery of the main water pipe 32. In other embodiments, the shunt 33 can be one, two, four, or five, etc.
Specifically, the bottom end of the screw rotor 23 is connected to the upper poppet 24 through a connecting bearing 34. A first end of the connecting bearing 34 is connected to the screw for rotation and a second end of the connecting bearing 34 is connected to the upper disk valve 24.
Further, at least one guiding hole 35 is formed in the sidewall of the second inner tube 22, and the guiding hole 35 communicates the second inner tube 22 and the second annular space 36. Preferably, the two diversion holes 35 are symmetrically disposed on both sides of the second inner tube 22.
Further, the first end of the ejector 13 is connected and communicated with the second end of the second outer cylinder 21 through a lower joint 37, six nozzles 28 are arranged on the ejector 13, and the six nozzles 28 are uniformly distributed on the outer side wall of the nozzle 28 at equal intervals.
It is understood that the connection among the joint, the outer cylinder or the inner pipe in the embodiment adopts a threaded connection. In other embodiments, the joint, the outer cylinder or the inner pipe may be fixedly connected by bonding, welding or the like.
In addition, in the present invention, unless otherwise expressly specified or limited, the terms "connected," "stacked," and the like are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (9)

1. A hydrate pulse jet oscillation tool is characterized in that the pulse jet oscillation tool (10) comprises an energy storage joint (11), a flow dividing joint (39), a pulse oscillation generator (12) communicated with the energy storage joint (11) and an ejector (13) communicated with the pulse oscillation generator (12), wherein the lower end of the energy storage joint (11) is connected and communicated with the first end of the pulse oscillation generator (12) through the flow dividing joint (39);
The energy storage joint (11) comprises a first outer barrel (14), a first inner pipe (15) fixedly arranged in the first outer barrel (14), an energy storage spring (16) sleeved outside the first inner pipe (15), and a sealing piston (17) slidably sleeved outside the first inner pipe (15) and positioned at the second end of the energy storage spring (16), the sealing piston (17) sealing a first annular space (18) arranged between the first inner tube (15) and the first outer cylinder (14), the first end of the first inner pipe (15) is fixedly connected with the first end of the first outer cylinder (14), a positioning joint (19) for stopping the sealing piston (17) is arranged at the second end of the first inner pipe (15), a stopping part (20) for stopping the first end of the energy storage spring (16) is fixedly arranged between the middle part of the first inner pipe (15) and the middle part of the first outer cylinder (14);
the pulse oscillation generator (12) comprises a second outer cylinder (21) and a second inner tube (22), a spiral rotor (23) which is rotatably arranged in the second inner pipe (22) is arranged in the second inner pipe (22), the first end of the second outer cylinder (21) is connected with a flow dividing joint (39), the second end of the second outer cylinder (21) is provided with an upper disk fixed valve (24) which is rotatably arranged in the second outer cylinder (21) and a lower disk fixed valve (25) which is fixedly arranged in the second outer cylinder (21) and is in sealing fit with the upper disk fixed valve (24), the lower end of the spiral rotor (23) is connected with the upper rotary valve (24) and drives the upper rotary valve (24) to rotate, the upper fixed valve (24) is provided with at least one first through hole (26), and the lower fixed valve (25) is provided with at least one second through hole (27) which can be communicated with the first through hole (26) at a position corresponding to the first through hole (26);
At least one nozzle (28) is arranged on the ejector (13).
2. The hydrate pulsed jet oscillation tool of claim 1, wherein a spring seat (29) movably sleeved outside the first inner pipe (15) is further arranged outside the first inner pipe (15), and the spring seat (29) is located between the energy storage spring (16) and the sealing piston (17).
3. Hydrate pulsed waterjet oscillation tool according to claim 1, characterised in that the first outer tube (14) first end and the first inner tube (15) first end are integrally formed as an upper joint (30).
4. Hydrate pulsed jet oscillation tool as claimed in claim 1, characterized in that a breathing hole (38) communicating with the first annular space (18) is provided in the side wall of the first outer barrel (14) near the stop (20), the breathing hole (38) penetrating the side wall of the first outer barrel (14).
5. Hydrate pulsed waterjet oscillation tool according to claim 1, characterized in that the tap (39) comprises a main tap (31) connected and communicating with the second end of the first outer barrel (14), a main water pipe (32) communicating with the main tap (31), and a shunt pipe (33) communicating with the main tap (31), the main water pipe (32) first end communicating with the main tap (31), the main water pipe (32) second end connecting and communicating with the second inner pipe (22) first end, the shunt pipe (33) first end communicating with the main tap (31), the shunt pipe (33) second end communicating with the second annular space (36) between the second outer barrel (21) and the second inner pipe (22).
6. The hydrate pulsed waterjet oscillation tool of claim 5 wherein the number of shunt tubes (33) is three, the three shunt tubes (33) being equally spaced about the periphery of the main water tube (32).
7. Hydrate pulsed waterjet oscillation tool according to claim 5, characterized in that the bottom end of the helical rotor (23) and the upper poppet valve (24) are connected by a connecting bearing (34).
8. The hydrate pulsed jet oscillation tool of claim 5, wherein at least one diversion hole (35) is formed in a side wall of the second inner pipe (22), and the diversion hole (35) communicates the second inner pipe (22) with the second annular space (36).
9. The hydrate pulsed jet oscillation tool of claim 1, wherein the first end of the ejector (13) is connected and communicated with the second end of the second outer barrel (21) through a lower joint (37), six nozzles (28) are arranged on the ejector (13), and the six nozzles (28) are uniformly distributed on the outer side wall of the ejector (13) at equal intervals.
CN202110627143.5A 2021-06-04 2021-06-04 Hydrate pulse jet oscillation tool Expired - Fee Related CN113294104B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110627143.5A CN113294104B (en) 2021-06-04 2021-06-04 Hydrate pulse jet oscillation tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110627143.5A CN113294104B (en) 2021-06-04 2021-06-04 Hydrate pulse jet oscillation tool

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CN113294104A CN113294104A (en) 2021-08-24
CN113294104B true CN113294104B (en) 2022-07-29

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Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103089197B (en) * 2013-01-22 2015-12-09 中国石油天然气股份有限公司 Sliding sleeve control tool
CN104343412A (en) * 2013-08-09 2015-02-11 胜利油田胜机石油装备有限公司 Axial vibratory impulse well cementation method and device
US10590709B2 (en) * 2017-07-18 2020-03-17 Reme Technologies Llc Downhole oscillation apparatus
CN208416451U (en) * 2018-07-04 2019-01-22 中国石油集团西部钻探工程有限公司 Novel hydropower vibration excitor
CN111188576B (en) * 2020-03-26 2024-06-14 四川佳琛石油设备有限公司 Hydraulic oscillator with low energy consumption
CN112377133B (en) * 2020-11-20 2021-11-23 中国石油集团渤海钻探工程有限公司 Controllable pulse nipple

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Granted publication date: 20220729