CN116398099A - Hydraulic time-delay dynamic negative pressure device of sandwich gun - Google Patents
Hydraulic time-delay dynamic negative pressure device of sandwich gun Download PDFInfo
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- CN116398099A CN116398099A CN202310384976.2A CN202310384976A CN116398099A CN 116398099 A CN116398099 A CN 116398099A CN 202310384976 A CN202310384976 A CN 202310384976A CN 116398099 A CN116398099 A CN 116398099A
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- 239000011229 interlayer Substances 0.000 claims abstract description 34
- 210000001503 joint Anatomy 0.000 claims abstract description 22
- 239000007788 liquid Substances 0.000 claims abstract description 16
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 15
- 239000011148 porous material Substances 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 3
- 239000010410 layer Substances 0.000 claims 1
- 239000003921 oil Substances 0.000 abstract description 32
- 239000002131 composite material Substances 0.000 abstract description 24
- 238000005516 engineering process Methods 0.000 abstract description 4
- 230000006872 improvement Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000009471 action Effects 0.000 description 15
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 238000010276 construction Methods 0.000 description 7
- 230000007246 mechanism Effects 0.000 description 7
- 239000000843 powder Substances 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 239000003721 gunpowder Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005056 compaction Methods 0.000 description 2
- 238000005474 detonation Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 238000004886 process control Methods 0.000 description 2
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/11—Perforators; Permeators
- E21B43/119—Details, e.g. for locating perforating place or direction
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
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- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention belongs to the technical field of oilfield production equipment processing, and particularly relates to a hydraulic delay dynamic negative pressure device of an interlayer gun, which comprises a perforating gun, an intermediate joint, a first centralizing pipe, a hydraulic delay dynamic negative pressure device, a wide-hole intermediate joint, an interlayer negative pressure gun, a positioning disk and a second centralizing pipe; the hydraulic time-delay dynamic negative pressure device consists of an outer cylinder of the dynamic negative pressure device, a sliding cylinder, a negative pressure perforating slide valve, an inner piston, hydraulic oil, a limiting fixed clamp spring, a pin, a micropore sleeve and a liquid inlet; the assembled sliding cylinder assembly is arranged in an outer cylinder of the dynamic negative pressure device and is fixed through a limiting fixing clamp spring; the assembled negative pressure perforated slide valve and the inner piston are arranged in the outer cylinder of the dynamic negative pressure device and are tightly abutted in the slide cylinder; the middle joint and the wide-hole middle joint are respectively arranged at two ends of the hydraulic time-delay dynamic negative pressure device through threads. The oil pipe conveying type composite dynamic negative pressure perforation is realized by using the interlayer gun, so that the development and improvement of the oil pipe conveying type perforation technology are realized.
Description
Technical Field
The invention belongs to the technical field of oilfield production equipment, and particularly relates to a hydraulic delay dynamic negative pressure device of an interlayer gun.
Background
Tubing conveyed perforation is the mainstream perforation process in the field at present, and particularly with the development of new perforation processes, composite perforation is increasingly applied in tubing conveyed perforation. In the construction principle, the composite gunpowder plays a role in comparison with the time delay of the perforating charges. The perforating charges complete perforation in microsecond level, the composite powder is combusted in millisecond level to form high pressure, and high-energy gas fracturing is started to the stratum. That is, there is a time difference from the completion of the perforation by the detonation gun to the complete combustion of the charge to generate the high energy gas pressure. The combination of dynamic negative pressure perforation during composite perforation becomes a key technical node in the action mechanism and at the moment of dynamic negative pressure generation. The dynamic negative pressure is generated before the composite gunpowder is completely combusted, so that the formed negative pressure can offset the high-pressure energy generated by the high-energy gas, the high-energy gas fracturing process is invalid, and the negative pressure effect can not be more ideal due to the fact that the high-low pressure difference is small.
The purpose of the original dynamic negative pressure perforation is to clean perforation tunnels at the moment of perforation, and reduce pollution and damage of the perforation to stratum under the action of the dynamic negative pressure. Under the action of pressure difference, the compaction belt formed by the broken jet flow on the surface of the perforation tunnel wall is used for restoring the permeability of the tunnel wall to the original state. Meanwhile, the negative pressure difference can also cause the gas and liquid in the geological formation of the perforation holes to flow into the well rapidly under the action of the pressure difference, and the returned gas and liquid wraps up the broken nitrate broken in the pore canal to flow into the well, so that the pollution of the perforation pore canal during perforation is effectively removed, and a cleaner perforation pore canal is obtained.
Therefore, in order to solve the problem of poor action time of the composite powder and the dynamic negative pressure of the composite perforation, the time delay treatment is needed for starting the negative pressure, and the dynamic negative pressure is started after the high-energy gas pressure of the composite powder is fully ensured to fully act on the geological strata, so that the effective oil pipe conveying type composite dynamic negative pressure perforation is completed. The time delay technology used in the existing composite dynamic negative pressure perforation adopts a mechanical travel mode of the negative pressure device component to carry out time delay, and the time delay time required by the composite negative pressure perforation is determined by utilizing the moving and falling travel of the component. The time delay technology is limited to the size of the negative pressure gun, and in order to ensure that the whole device can provide enough time delay, the negative pressure gun is designed into two parts, the upper half section of the negative pressure gun is a space for providing the falling stroke of a time delay component, and the perforating device is designed in the middle section of the whole negative pressure gun. When perforating, detonation energy of the perforating gun excites the delay component, the delay component is accelerated to fall downwards under the action of kinetic energy, the piston of the perforating device is impacted, and the negative pressure gun is opened. Because the negative pressure devices are designed and dispersed in structure and are assembled on the construction site of the well site, the two sections of negative pressure guns are assembled and then are in butt joint, so that the labor intensity of workers is very high.
Disclosure of Invention
In order to solve the technical problems, the invention provides a hydraulic time-delay dynamic negative pressure device of an interlayer gun. The advantages brought by the composite dynamic negative pressure perforation for the oil pipe conveying type perforation are brought into play, and the development and improvement of the oil pipe conveying type perforation technology are realized by utilizing the interlayer gun to realize the oil pipe conveying type composite dynamic negative pressure perforation.
The invention adopts the technical scheme that: the hydraulic time-delay dynamic negative pressure device of the interlayer gun comprises a perforating gun, an intermediate joint, a first centralizing pipe, a hydraulic time-delay dynamic negative pressure device, a wide-hole intermediate joint, an interlayer negative pressure gun, a positioning disk and a second centralizing pipe; the hydraulic time-delay dynamic negative pressure device consists of an outer cylinder of the dynamic negative pressure device, a sliding cylinder, a negative pressure perforating slide valve, an inner piston, hydraulic oil, a limiting fixed clamp spring, a pin, a micropore sleeve and a liquid inlet; the sliding cylinder is arranged on the sliding cylinder seat, a micropore sleeve piece provided with micropores is arranged outside the sliding cylinder through threads, the inner cavity is filled with hydraulic oil through micropores by using a needle tube, and the assembled assembly is arranged in the outer cylinder of the dynamic negative pressure device and is fixed through a limiting fixing clamp spring; the inner piston is arranged in the negative pressure open-pore slide valve hole and is provided with a pin; the assembled negative pressure perforated slide valve and the inner piston are arranged in the outer cylinder of the dynamic negative pressure device and are tightly abutted in the slide cylinder; the middle joint and the wide-hole middle joint are respectively arranged at two ends of the hydraulic time-delay dynamic negative pressure device through threads; the first centralizing pipe and the second centralizing pipe are respectively positioned in the middle joint and the wide-hole middle joint, the perforating gun and the positioning disk are respectively arranged at two sides of the hydraulic time-delay dynamic negative pressure device, and the interlayer negative pressure gun is connected with the wide-hole middle joint.
Further, an O-shaped sealing ring is arranged on the outer circumference of the negative pressure perforated slide valve.
Further, the technical key of the dynamic negative pressure perforation of the interlayer gun is on the position and time node of the generation of the negative pressure area. Many times, the most straightforward is the most efficient. That is, the action time is also a key item for fully exerting the action of dynamic negative pressure in perforation. The cavity structure of the interlayer gun body is the necessary condition for negative pressure formation. The interlayer gun is positioned at the position nearest to the perforating firing interval. Therefore, the interlayer gun is fully utilized, the application of the interlayer gun on the dynamic negative pressure is developed, and the problems of the action position and the action time of the dynamic negative pressure are exactly solved.
Further, the hydraulic time-delay dynamic negative pressure device of the interlayer gun can fully utilize the space of the idle cavity of the interlayer gun, so that the gun body of the interlayer gun becomes a negative pressure gun body, mechanical kinetic energy on the negative pressure device or chemical kinetic energy of fire and explosive are utilized to open a liquid inlet hole of the negative pressure gun during perforation, the internal space and the external space of the interlayer gun are communicated, high-pressure well fluid flows to a low-pressure area of the inner cavity of the interlayer gun through a cabin door, and negative pressure is instantaneously caused in the section of the interlayer gun. The dynamic negative pressure perforation construction of the oil pipe conveying perforation is completed by using the interlayer gun. The jet hole channel is instantly cleaned by utilizing the negative pressure effect in real time, compaction damage of jet flow to the wall of the jet hole channel during perforation is eliminated, the permeability of the rock gap of the jet hole channel is recovered, and the oil gas productivity after perforation is improved.
The invention has the beneficial effects that: a hydraulic time-delay dynamic negative pressure device for an interlayer gun is provided. The delay mechanism needed by the device discharges oil through the micropores by utilizing hydraulic oil, and the device is further acted after the oil is discharged, so that the piston is pushed to open the liquid inlet of the negative pressure device, and dynamic negative pressure is started to be established. The time used for the oil discharge process is the time required for the delay. The delay time can be determined by calculation and the hydraulic oil quantity in the oil cavity and the diameter of the micropore, and the delay time required by the transmission process control is determined.
Drawings
Fig. 1 is a schematic cross-sectional structure of the first embodiment.
Fig. 2 is a schematic structural diagram of a hydraulic time-delay dynamic negative pressure device in the first embodiment.
Fig. 3 is a schematic structural view of an outer cylinder of the dynamic negative pressure device in the first embodiment.
Fig. 4 is a cross-sectional view of A-A in fig. 3.
Description of the embodiments
Examples
Referring to the figures, the hydraulic time-delay dynamic negative pressure device of the sandwich gun comprises a perforating gun 1, an intermediate joint 2, a first centralizing pipe 3, a hydraulic time-delay dynamic negative pressure device 4, a wide-hole intermediate joint 5, a sandwich negative pressure gun 6, a positioning disc 7 and a second centralizing pipe 8; the hydraulic time-delay dynamic negative pressure device 4 consists of a dynamic negative pressure device outer cylinder 401, a sliding cylinder 402, a negative pressure hole opening sliding valve 403, an inner piston 404, hydraulic oil 405, a limiting fixed clamp spring 406, a pin 407, a micropore sleeve 408 and a liquid inlet 409; the sliding cylinder is arranged on the sliding cylinder seat, a micropore sleeve piece provided with micropores is arranged outside the sliding cylinder through threads, the inner cavity is filled with hydraulic oil through micropores by using a needle tube, and the assembled assembly is arranged in the outer cylinder of the dynamic negative pressure device and is fixed through a limiting fixing clamp spring; the inner piston is arranged in the negative pressure open-pore slide valve hole and is provided with a pin; the assembled negative pressure perforated slide valve and the inner piston are arranged in the outer cylinder of the dynamic negative pressure device and are tightly abutted in the slide cylinder; the middle joint and the wide-hole middle joint are respectively arranged at two ends of the hydraulic time-delay dynamic negative pressure device through threads; the first centralizing pipe and the second centralizing pipe are respectively positioned in the middle joint and the wide-hole middle joint, the perforating gun and the positioning disk are respectively arranged at two sides of the hydraulic time-delay dynamic negative pressure device, and the interlayer negative pressure gun is connected with the wide-hole middle joint; and an O-shaped sealing ring is arranged on the outer circumference of the negative pressure perforated slide valve.
When the oil pipe conveying type composite dynamic negative pressure perforation is implemented on the oil gas well, the oil pipe conveying type composite dynamic negative pressure perforation is firstly connected to the upper end of the negative pressure gun, the negative pressure gun is connected to the lower end of the adjacent perforating gun, the hydraulic time-delay dynamic negative pressure device is positioned in the middle of the perforating gun and the negative pressure gun, and when the perforating pipe column of the whole oil gas well is conveyed to a designated perforation geological interval by the oil pipe, the perforating gun is detonated to perform perforation in a mechanical rod throwing or pressure detonating mode. The energy generated in the perforating gun acts on the sliding cylinder through the central hole of the middle joint, meanwhile, the sliding cylinder pushes the negative pressure perforated slide valve to move forwards, hydraulic oil in the oil cavity is discharged through the micropores in the process that the sliding cylinder moves forwards, after the hydraulic oil is discharged, the liquid inlet hole closed by the negative pressure perforated slide valve is opened, and well liquid flows into the negative pressure device from the liquid inlet hole. Under the action of well hydraulic pressure, the inner piston shears the pin to fall into the sandwich gun. The channels of the well fluid entering the interlayer gun are all opened, the well fluid is instantaneously poured into the interlayer gun, so that the confining pressure in the shaft is quickly reduced, negative pressure is formed, and the oil pipe conveying composite dynamic negative pressure perforation is completed.
The hydraulic delay dynamic negative pressure device of the interlayer gun is applied to oil pipe conveying type composite perforation, and a delay mechanism of the device can ensure that composite gunpowder of the composite perforation can be fully combusted to generate enough gas pressure and act on holes of a perforation section and geological strata. The delay mechanism is an indispensable important component of the composite perforation, and adopts the hydraulic micropore oil discharge to delay the mechanical action of the negative pressure device in the working principle. In the mechanical action process, the time for draining the oil in the hydraulic oil cavity is the delay time for opening the liquid inlet of the negative pressure device for the mechanical action.
Because the delay time of the hydraulic delay dynamic negative pressure device of the oil pipe conveying composite perforation interlayer gun is determined according to the time (generally between 10 and 30 ms) of complete combustion of composite powder carried by the perforation gun, the delay action is generally designed at 30ms, and the negative pressure device is ensured to open the liquid inlet 409 of the negative pressure device at a reasonable moment (about 10ms after the maximum pressure peak value generated by powder combustion). Thus, the diameter of the drain micro-hole 408 on the negative pressure device is determined according to the amount of oil in the oil chamber and the required delay time of 30 ms.
The delay mechanism needed by the device is to utilize hydraulic oil to drain oil through micropores, further act on the device mechanism after draining the oil, push the piston of the device to open the liquid inlet hole on the negative pressure device, and start to establish dynamic negative pressure. The time used for the oil discharge process is the time required for the delay. The time delay can be determined by calculating the hydraulic oil quantity in the oil cavity and the micropore diameter. Delivering the delay time required for process control.
The hydraulic system and the dynamic negative pressure perforating device are designed at the middle joint of the perforating gun and the negative pressure gun, the whole device is slightly larger than the middle joint of the perforating gun and connected with each other in a sliding sleeve mode convenient to operate, so that the dynamic negative pressure device is compact in whole structural design from the delaying mechanism to the perforating device, convenient to use and install in a construction site and capable of greatly reducing the labor intensity of operators. The hydraulic oil of the hydraulic delay device is transmitted between two adjacent oil chambers in the device, and the piston of the perforating device is controlled to move to open the liquid inlet hole of the negative pressure gun, so that the delay time is easy to control.
Because the hydraulic system and the dynamic negative pressure perforating device are designed at the middle joint of the perforating gun and the negative pressure gun, the dynamic negative pressure device is assembled at the upper end of the interlayer gun and is assembled with an intermediate joint, and when the oil pipe is used for conveying perforation construction, the interlayer gun with the dynamic negative pressure device replaces the interlayer gun in the original perforating pipe string, so that the oil pipe conveying type composite dynamic negative pressure perforation can be realized. Therefore, the perforating device adopts the hydraulic delay dynamic negative pressure perforating device of the interlayer gun to carry out perforation, does not change the original perforating process, does not increase the difficulty of construction operation, and has simple and easy perforation construction.
Claims (2)
1. The utility model provides a hydraulic delay dynamic negative pressure device of intermediate layer rifle which characterized in that: the hydraulic time-delay dynamic negative pressure device of the interlayer gun comprises a perforating gun, an intermediate joint, a first centralizing pipe, a hydraulic time-delay dynamic negative pressure device, a wide-hole intermediate joint, an interlayer negative pressure gun, a positioning disc and a second centralizing pipe; the hydraulic time-delay dynamic negative pressure device consists of an outer cylinder of the dynamic negative pressure device, a sliding cylinder, a negative pressure perforating slide valve, an inner piston, hydraulic oil, a limiting fixed clamp spring, a pin, a micropore sleeve and a liquid inlet; the sliding cylinder is arranged on the sliding cylinder seat, a micropore sleeve piece provided with micropores is arranged outside the sliding cylinder through threads, a needle tube is used for filling hydraulic oil into the inner cavity through micropores, the assembled assembly is arranged in the outer cylinder of the dynamic negative pressure device and is fixed through a limiting fixing clamp spring, and a liquid inlet hole is formed in the outer cylinder of the dynamic negative pressure device; the inner piston is arranged in the negative pressure open-pore slide valve hole and is provided with a pin; the assembled negative pressure perforated slide valve and the inner piston are arranged in the outer cylinder of the dynamic negative pressure device and are tightly abutted in the slide cylinder; the middle joint and the wide-hole middle joint are respectively arranged at two ends of the hydraulic time-delay dynamic negative pressure device through threads; the first centralizing pipe and the second centralizing pipe are respectively positioned in the middle joint and the wide-hole middle joint, the perforating gun and the positioning disk are respectively arranged at two sides of the hydraulic time-delay dynamic negative pressure device, and the interlayer negative pressure gun is connected with the wide-hole middle joint.
2. The hydraulic time-lapse dynamic negative pressure device of the sandwich gun according to claim 1, wherein: and an O-shaped sealing ring is arranged on the outer circumference of the negative pressure perforated slide valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310384976.2A CN116398099A (en) | 2023-04-12 | 2023-04-12 | Hydraulic time-delay dynamic negative pressure device of sandwich gun |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310384976.2A CN116398099A (en) | 2023-04-12 | 2023-04-12 | Hydraulic time-delay dynamic negative pressure device of sandwich gun |
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| CN116398099A true CN116398099A (en) | 2023-07-07 |
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| CN202310384976.2A Pending CN116398099A (en) | 2023-04-12 | 2023-04-12 | Hydraulic time-delay dynamic negative pressure device of sandwich gun |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117307110A (en) * | 2023-12-01 | 2023-12-29 | 大庆金祥寓科技有限公司 | Reusable slideway non-return closing type environment-friendly dynamic negative pressure gun tail |
| CN117328841A (en) * | 2023-12-01 | 2024-01-02 | 大庆金祥寓科技有限公司 | Quick connection environment-friendly negative pressure gun |
-
2023
- 2023-04-12 CN CN202310384976.2A patent/CN116398099A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117307110A (en) * | 2023-12-01 | 2023-12-29 | 大庆金祥寓科技有限公司 | Reusable slideway non-return closing type environment-friendly dynamic negative pressure gun tail |
| CN117328841A (en) * | 2023-12-01 | 2024-01-02 | 大庆金祥寓科技有限公司 | Quick connection environment-friendly negative pressure gun |
| CN117328841B (en) * | 2023-12-01 | 2024-02-13 | 大庆金祥寓科技有限公司 | Quick connection environment-friendly negative pressure gun |
| CN117307110B (en) * | 2023-12-01 | 2024-02-27 | 大庆金祥寓科技有限公司 | Reusable slideway non-return closing type environment-friendly dynamic negative pressure gun tail |
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