CN111827939A - Perforation storage and protection integrated device - Google Patents
Perforation storage and protection integrated device Download PDFInfo
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- CN111827939A CN111827939A CN202010713944.9A CN202010713944A CN111827939A CN 111827939 A CN111827939 A CN 111827939A CN 202010713944 A CN202010713944 A CN 202010713944A CN 111827939 A CN111827939 A CN 111827939A
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- 238000007789 sealing Methods 0.000 claims abstract description 38
- 239000007788 liquid Substances 0.000 claims abstract description 20
- 239000002184 metal Substances 0.000 claims abstract description 15
- 238000012856 packing Methods 0.000 claims description 18
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 22
- 238000011010 flushing procedure Methods 0.000 abstract description 11
- 239000003129 oil well Substances 0.000 abstract description 5
- 238000001514 detection method Methods 0.000 abstract description 3
- 239000012188 paraffin wax Substances 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 description 14
- 238000000034 method Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 239000003208 petroleum Substances 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 238000011161 development Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 230000006378 damage Effects 0.000 description 4
- 230000035699 permeability Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005474 detonation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000009527 percussion Methods 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000000638 stimulation Effects 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
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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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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
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- Mining & Mineral Resources (AREA)
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- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Safety Valves (AREA)
Abstract
The application discloses a perforation, storage and protection integrated device, which comprises a rupture disc body; the left end of the upper joint is connected with the rupture disc body; the diameter of a cylinder in the middle of the valve is larger than that of a cylinder at the left end of the valve, and the right end of the valve is a smooth conical surface; the T-shaped disc root body is connected with the right end of the valve; the left end face of the valve seat is a smooth surface and is matched with the conical surface of the right end of the valve seat to form a metal seal; the valve plug is connected with the right end of the valve seat to enable the right end of the valve seat to form a sealing structure; the left end of the lower joint is connected with the right end of the valve seat, and the right end of the lower joint is connected with the perforating gun. In normal production operation, measures such as killing, flushing, descaling, paraffin removal, pump detection and the like can be normally carried out without causing pollution to the stratum and influencing the yield of an oil well due to the fact that shaft liquid enters the stratum.
Description
Technical Field
The application relates to the field of petroleum drilling, in particular to a perforation, storage and protection integrated device.
Background
The petroleum resource belongs to a non-renewable resource, so in the process of petroleum resource exploitation, the work of protecting the oil layer of the petroleum reservoir should be done well, so as to achieve the purpose of sustainable development of the petroleum resource. The low-permeability sandstone reservoir oil field in petroleum resources in China has a large specific gravity and has abundant petroleum reserves, but the low-permeability sandstone reservoir oil field is mainly distributed in a depressed area and a steep slope area, so that structural layers of the stored petroleum have very complicated conditions, and the characteristics of poor reservoir physical properties, small pore throats and the like are highlighted.
The low-permeability sandstone is mostly in the middle-deep layer, and the oil deposit rock has poor physical property, small porosity and low permeability. Low permeability sandstone reservoirs are more susceptible to contamination and damage than high permeability reservoirs due to the restriction of low porosity and low permeability.
Factors causing reservoir damage in the oilfield development process include incompatibility of foreign fluids and the formation, blockage of solid particles, scaling, precipitation and the like. In the process of oilfield development, the formation may be damaged to varying degrees by performing operations related to the formation, including stimulation, flooding, flushing, killing, and improper work regimes. Such damage can reduce natural productivity and even substantially reduce oil well production. Therefore, the reservoir protection is very important in the development and production process.
During well completion production, perforation is required to communicate the oil reservoir with the wellbore. In order to reduce the pollution to the stratum as much as possible, the production construction time is shortened as much as possible after perforation, and the phenomenon that the stratum is polluted by wellbore fluid entering the stratum as much as possible is avoided, so that the later yield is influenced.
In the production of oil wells, in order to avoid the pollution of environment caused by excessive dirt in a pipe column or excessive dirt brought out by the pipe column after the pipe column is not washed for a long time, the operation of moving the pipe column is performed or the well washing operation of a production well is required every other production period.
The flushing fluid circulates in the space between the pipe column and the casing ring in the flushing operation, and if no measures are taken, the flushing fluid enters the stratum through the pipe column to pollute an oil layer, so that the development rate of an oil field reservoir is reduced, and the economic benefit of the oil field is seriously influenced. The production well is flushed to prevent the flushing fluid from entering the formation.
The prior art has the following defects: the matching of the operation time after perforation and other operations during the production of the oil well can not be simultaneously met. The pollution to stratum is easily caused during operations such as killing, washing and pump detection, and the pollution to oil layers cannot be avoided after perforation and in the production process by the existing similar tools.
Disclosure of Invention
The application mainly aims to provide a perforation, storage and protection integrated device, which can meet perforation requirements, shorten the operation construction period and prevent fluid from entering an oil layer during production measures.
In order to achieve the above object, the present application provides a perforation, storage and protection integrated device, comprising:
a rupture disc body;
the left end of the upper joint is connected with the rupture disc body;
the diameter of a cylinder in the middle of the valve is larger than that of a cylinder at the left end of the valve, and the right end of the valve is a smooth conical surface;
the T-shaped disc root body is connected with the right end of the valve;
the left end face of the valve seat is a smooth surface and is matched with the conical surface of the right end of the valve seat to form a metal seal, a side channel is arranged on the outer surface of the valve seat, and a main channel and a liquid inlet connected with the main channel are arranged in the valve seat;
the valve plug is connected with the right end of the valve seat to enable the right end of the valve seat to form a sealing structure;
the left end of the lower joint is connected with the right end of the valve seat, and the right end of the lower joint is connected with the perforating gun.
Preferably, still include the connecting pipe, the connecting pipe left end with top connection, the right-hand member with the valve seat is connected, the connecting pipe both ends are the same knot type, the both ends side of connecting pipe all designs has 4 symmetrical anti-rotation pin nail holes one. And the first anti-rotation pin hole is used for installing an anti-rotation pin, so that the tool is prevented from being unscrewed and falling off.
Preferably, the valve seat further comprises a valve cover, the right end of the valve cover is an internal thread buckle and is connected with the small-diameter thread buckle at the left end of the valve seat, the small end of the valve is arranged in the inner hole at the left end of the valve cover, 3 square holes are formed in the middle of the valve cover, and 4 anti-rotation pin holes II are formed in the side face of the right end of the valve cover. The square hole is used for producing liquid and flowing into the shaft through the side hole. And the anti-rotation pin hole II is used for installing an anti-rotation pin, so that the valve cover is prevented from loosening. The valve cover plays a role in placing the spring and righting the valve.
Preferably, the valve cover further comprises a spring, the spring is arranged in the left inner portion of the valve cover and does not penetrate through the inner hole, the spring is a compression spring, the left end face and the right end face of the spring are in a horizontal plane shape perpendicular to the axial direction of the spring, and the spring is internally provided with a hollow cylinder. The spring is used for providing elastic force for the valve return.
Preferably, the left end of rupture disc body is equipped with the screw thread, the surface of rupture disc body is equipped with seal groove one and seal groove two, the centre of rupture disc body is equipped with the main entrance, the downside of rupture disc body still is equipped with the connector. The left end of the rupture disc body is connected with a central pipe, and the central pipe of the packer form an annular space; the main channel of the rupture disc body is a production liquid flow channel during normal production; and a connecting port on the lower side of the rupture disc body is used for installing a rupture disc, when the pressure reaches a rupture value, the rupture disc is opened, and liquid enters an annular space between the central pipe and the central pipe of the packer to seal the packer. And after the setting action of the packer is finished, the rupture disc body is pulled out along with the pipe column.
Preferably, both ends of the upper joint are provided with screw threads, the left end screw thread is connected with a packer screw thread, the right end screw thread is connected with the left end screw thread of the connecting pipe, the outer surface of the upper joint is provided with a third sealing groove and an anti-rotation pin groove for installing a sealing ring and an anti-rotation pin, and the sealing and anti-rotation functions can be achieved.
Preferably, the surface of the larger cylinder in the middle of the valve is provided with a strip-shaped groove, the length of the strip-shaped groove is 70-75mm, the width of the strip-shaped groove is 8-12mm, and the length of the strip-shaped groove is 72mm, and the width of the strip-shaped groove is 10mm, so that the phenomenon of sand blocking in the using process is prevented; the smooth conical surface of the right end of the valve is in contact fit with the left end face of the valve seat to form a metal-to-metal sealing surface, so that a sealing effect is achieved, and flushing fluid is prevented from entering a stratum. The right end of the valve is connected with the T-shaped disc root body, the T-shaped disc root is fixed and is in contact fit with the left end face of the valve seat, and sealing of the sealing ring and the metal surface is formed. The double-layer sealing function is achieved together with the metal and metal sealing surface, and the flushing fluid can be better prevented from entering the stratum.
Preferably, still include T type packing, T type packing is T type plastic seal, installs in the recess of T type packing body, with the conical surface of valve right-hand member forms twice seal structure together.
Preferably, the T-shaped disc root body is provided with a groove for installing the T-shaped disc root, the left end screw thread is connected with the valve right end screw thread to fix and compress the T-shaped disc root, and the right end of the T-shaped disc root body is provided with a hexagonal wrench hole, so that the T-shaped disc root body and the valve can be conveniently installed. The valve seat is assembled with the valve and the T-shaped disc root into a whole and matched with the valve seat to form a one-way circulation function, so that fluid is prevented from entering the stratum.
Preferably, the left end face of the valve seat is a smooth surface and is matched with the valve conical surface to form a metal seal, a side channel is arranged on the outer surface of the valve seat, and a main channel and a liquid inlet connected with the main channel are arranged in the valve seat.
Preferably, both ends are the screw thread about the lower clutch, the left end side design of lower clutch has the several to prevent changeing the round pin nail hole, prevents changeing the round pin nail hole preferably for 4, and left end screw thread and valve seat right-hand member external screw thread are connected, and right-hand member screw thread is connected with the perforating gun, and the inner channel accessible liquid of lower clutch provides percussion pressure for right-hand member perforation part, satisfies the requirement of perforating gun detonation.
Preferably, the left end of the valve plug is a female buckle, the interior of the female buckle is not communicated, and the left end of the valve plug is connected with the right end of the valve seat to enable the right end of the valve seat to form a sealing effect.
The beneficial effect of this application is: the device of this application uses with packer and perforation rifle cooperation, and after the perforation, direct setting packer has avoided the injury of pit shaft liquid to the stratum. In normal production operation, measures such as killing, flushing, descaling, paraffin removal, pump detection and the like can be normally carried out without causing pollution to the stratum and influencing the yield of an oil well due to the fact that shaft liquid enters the stratum.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, serve to provide a further understanding of the application and to enable other features, objects, and advantages of the application to be more apparent. The drawings and their description illustrate the embodiments of the invention and do not limit it. In the drawings:
fig. 1 is a schematic view of the overall structure of the present invention.
FIG. 2 is a schematic structural view of the rupture disc body.
Fig. 3 is a schematic structural diagram of the upper street.
Fig. 4 is a schematic structural view of the connection pipe.
Fig. 5 is a schematic structural diagram of the valve cover.
Fig. 6 is a schematic view of a valve structure.
Fig. 7 is a schematic structural diagram of a T-shaped packing.
Fig. 8 is a schematic structural diagram of a T-shaped packing body.
Fig. 9 is a schematic structural diagram of the valve seat.
Fig. 10 is a schematic structural view of the valve plug.
Fig. 11 is a schematic structural view of the lower joint.
FIG. 12 is a schematic flow diagram of the integrated device during perforating operation.
FIG. 13 is a schematic flow diagram of the integrated device after perforation when setting the packer.
FIG. 14 is a schematic flow diagram of the integrated device during the production process.
In the figure: the anti-rotation packing device comprises a 1-rupture disc body, a 2-upper joint, a 3-connecting pipe, a 4-valve cover, a 5-spring, a 6-valve, a 7-T-shaped packing, an 8-T-shaped packing body, a 9-valve seat, a 10-valve plug, a 11-lower joint, a 101-sealing groove I, a 102-sealing groove II, a 103-connecting port, a 201-anti-rotation pin groove, a 202-sealing groove III, a 301-anti-rotation pin hole I, a 401-square hole, a 402-anti-rotation pin hole II, a 601-strip-shaped groove, a 901-side channel, a 902-liquid inlet and a 903-main channel.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.
In addition, the term "plurality" shall mean two as well as more than two.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to achieve the above object, as shown in fig. 1, the present application provides a perforation, storage and maintenance integrated device, comprising:
a rupture disc body 1;
the left end of the upper joint 2 is connected with the rupture disc body 1;
the diameter of a cylinder in the middle of the valve 6 is larger than that of a cylinder at the left end of the valve 6, and the right end of the valve 6 is a smooth conical surface;
the T-shaped packing body 8 is connected with the right end of the valve 6;
the left end face of the valve seat 9 is a smooth surface and is matched with the conical surface of the right end of the valve seat to form a metal seal;
the valve plug 10 is connected with the right end of the valve seat 9, so that the right end of the valve seat 9 forms a sealing structure;
the left end of the lower joint 11 is connected with the right end of the valve seat 9, and the right end of the lower joint is connected with the perforating gun.
As shown in fig. 4, the connecting pipe further comprises a connecting pipe 3, the left end of the connecting pipe 3 is connected with the upper joint 2, the right end of the connecting pipe is connected with the valve seat 9, the two ends of the connecting pipe 3 are of the same buckle type, and the side surfaces of the two ends of the connecting pipe 3 are respectively provided with 4 symmetrical anti-rotation pin holes 301. The first anti-rotation pin hole 301 is used for installing an anti-rotation pin, so that the tool is prevented from being unscrewed and falling off.
As shown in fig. 5, the anti-rotation valve further comprises a valve cover 4, wherein the right end of the valve cover 4 is provided with an internal thread buckle and is connected with the small-diameter thread buckle at the left end of the valve seat, the small end of the valve is arranged in the inner hole at the left end of the valve cover, the middle of the valve cover is provided with 3 square holes 401, and the side surface of the right end of the valve cover is provided with 4 anti-rotation pin holes II 402. The square holes 401 are used for production fluid to flow into the wellbore through the side holes. And the second anti-rotation pin hole 402 is used for installing an anti-rotation pin so as to ensure that the valve cover is not loosened. The valve cover 4 plays a role in placing a spring and righting the valve.
The valve cover is characterized by further comprising a spring 5, wherein the spring 5 is arranged in the left side of the valve cover 4 and does not penetrate through the inner hole, the spring is a compression spring, the left end face and the right end face of the spring are in a horizontal plane shape perpendicular to the axial direction of the spring, and the spring is a hollow cylinder. The spring is used for providing elastic force for the valve return.
As shown in fig. 2, the left end of the rupture disc body 1 is provided with a screw thread, the outer surface of the rupture disc body is provided with a first sealing groove 101 and a second sealing groove 102, the middle of the rupture disc body 1 is provided with a main channel, and the lower side of the rupture disc body is further provided with a connecting port 103. The left end of the rupture disc body 1 is connected with a central pipe, and the central pipe of the packer form an annular space; the main channel of the rupture disc body is a production liquid flow channel during normal production; and the connecting port 103 on the lower side of the rupture disk body 1 is used for installing a rupture disk, when the pressure reaches a rupture value, the rupture disk is opened, and liquid enters the annular space between the central pipe and the central pipe of the packer to seal the packer. And after the setting action of the packer is finished, the rupture disc body is pulled out along with the pipe column.
As shown in fig. 3, two ends of the upper joint 2 are provided with threads, the left thread is connected with a packer thread, the right thread is connected with the left thread of the connecting pipe, and the outer surface of the upper joint 2 is provided with a third sealing groove 202 and an anti-rotation pin groove 201 for installing a sealing ring and an anti-rotation pin, so that sealing and anti-rotation effects can be achieved.
As shown in fig. 6, a strip-shaped groove 601 is formed on the surface of the larger cylinder in the middle of the valve 6, and the strip-shaped groove 601 has a length of 72mm and a width of 10mm and is used for preventing sand from being stuck in the using process; the smooth conical surface at the right end of the valve 6 is in contact fit with the left end surface of the valve seat 9 to form a metal-to-metal sealing surface, so that a sealing effect is achieved, and the flushing fluid is prevented from entering the stratum. The right end of the valve 6 is connected with the T-shaped packing body 8, the T-shaped packing 7 is fixed and is in contact fit with the left end face of the valve seat 9, and sealing of the sealing ring and the metal surface is formed. The double-layer sealing function is achieved together with the metal and metal sealing surface, and the flushing fluid can be better prevented from entering the stratum.
As shown in fig. 7, the packing further comprises a T-shaped packing 7, wherein the T-shaped packing 7 is a T-shaped plastic sealing ring, is installed in a groove of the T-shaped packing body 8, and forms two sealing structures together with the conical surface at the right end of the valve 6.
As shown in fig. 8, the T-shaped disc root body 8 is provided with a groove for mounting the T-shaped disc root 7, the left end screw thread is connected with the right end screw thread of the valve 6 to fix and compress the T-shaped disc root 7, and the right end of the T-shaped disc root body 8 is provided with a hexagonal wrench hole, so that the T-shaped disc root body 8 and the valve 6 can be conveniently mounted. The valve seat is assembled with the valve 6 and the T-shaped disc root 7 into a whole and matched with the valve seat 9 to form a one-way circulation function, so that fluid is prevented from entering the stratum.
As shown in fig. 9, the left end surface of the valve seat 9 is a smooth surface, and is matched with the conical surface of the valve 6 to form a metal seal, a side channel is arranged on the outer surface of the valve seat 9, and a main channel 903 and a liquid inlet 902 connected with the main channel are arranged inside the valve seat 9. The right side of the valve seat 9 is connected with the valve plug 10 to form a non-through structure, the left end face of the valve seat is a smooth surface, and the valve seat is matched with the conical surface of the valve 6 to form a metal seal; the outer surface of the left end of the valve seat 9 is provided with a round hole which is communicated with the through hole which is not penetrated inside and is used as an injection channel; the valve seat 9 cuts off two surfaces of the symmetrical cylinder to form a flow passage for producing liquid. The valve seat 9 is integrally installed in a through hole in the upper sealing body, a round hole in the outer surface of the valve seat 9 is concentric with a round hole in the outer surface of the upper sealing body 5, and the valve seat 9 and the upper sealing body 5 are fixed into a whole by using a surfacing technology.
As shown in fig. 11, the left end and the right end of the lower joint 11 are provided with threads, the side surface of the left end of the lower joint 11 is provided with 4 anti-rotation pin holes, the threads at the left end are connected with the external threads at the right end of the valve seat 9, the threads at the right end are connected with the perforating gun, and the inner channel of the lower joint can pass through liquid to provide percussion pressure for the perforating part at the right end, so that the detonation requirement of the perforating gun is met.
As shown in fig. 10, the left end of the valve plug 10 is a female fastener, the interior of the valve plug is not through, and the right end of the valve plug is not provided with a hole and is not fastened. The left end of the valve plug 10 is connected with the right end of the valve seat 9, so that the right end of the valve seat 9 forms a sealing effect.
The structural design of the rupture disc body 1 meets the requirements that a perforating gun is firstly fired and detonated, then the pressure is increased, the rupture disc is used for rupture, and the packer setting action is carried out. As shown in fig. 12, the side passage provided on the outer surface of the valve seat 9 allows fluid to flow through the rupture disk body, the upper joint, the main passage of the connecting pipe, and from the side passage 901 of the valve seat to the lower joint 11 during perforating operation.
As shown in fig. 13, the flow is shown after perforation when setting the packer. Liquid flows between the rupture disc body 1 and the upper joint 2.
As shown in fig. 14, the flow of the integrated device is schematically shown during the production process, and the liquid enters from the liquid inlet 902 of the valve seat, enters from the main passage 903 of the valve seat to the passage of the valve, and enters from the passage of the valve to the passage of the connecting pipe. Two different channels are adopted for perforation and processing production, and the pollution to an oil layer can be avoided after perforation and in the production process.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A perforation storage and protection integrated device is characterized by comprising:
a rupture disc body;
the left end of the upper joint is connected with the rupture disc body;
the diameter of a cylinder in the middle of the valve is larger than that of a cylinder at the left end of the valve, and the right end of the valve is a smooth conical surface;
the T-shaped disc root body is connected with the right end of the valve;
the left end face of the valve seat is a smooth surface and is matched with the conical surface of the right end of the valve seat to form a metal seal, a side channel is arranged on the outer surface of the valve seat, and a main channel and a liquid inlet connected with the main channel are arranged in the valve seat;
the valve plug is connected with the right end of the valve seat to enable the right end of the valve seat to form a sealing structure;
the left end of the lower joint is connected with the right end of the valve seat, and the right end of the lower joint is connected with the perforating gun.
2. The perforating, storing and protecting integrated device as claimed in claim 1, further comprising a connecting pipe, wherein the left end of the connecting pipe is connected with the upper joint, the right end of the connecting pipe is connected with the valve seat, and a plurality of symmetrical first anti-rotation pin holes are designed on the two side surfaces of the connecting pipe.
3. The perforation, storage and protection integrated device as claimed in claim 1, further comprising a valve cover, wherein the right end of the valve cover is an internal thread buckle and is connected with the small-diameter thread buckle at the left end of the valve seat, the small end of the valve is arranged in the inner hole at the left end of the valve cover, the middle of the valve cover is provided with 3 square holes, and the right end side face of the valve cover is designed with 4 anti-rotation pin holes II.
4. The perforating, storing and protecting integrated device as claimed in claim 3, further comprising a spring, wherein the spring is arranged in the left inner hole of the valve cover, the spring is a compression spring, the left end face and the right end face of the spring are horizontal planes perpendicular to the axial direction of the spring, and the inside of the spring is a hollow cylinder.
5. The perforating, storing and protecting integrated device as claimed in claim 1, wherein the left end of the rupture disk body is provided with a screw thread, the outer surface of the rupture disk body is provided with a first sealing groove and a second sealing groove, the middle of the rupture disk body is provided with a main channel, and the lower side of the rupture disk body is further provided with a connecting port.
6. The perforating, storing and protecting integrated device as claimed in claim 1, wherein the upper joint is provided with screw threads at both ends, the left end screw thread is connected with a packer screw thread, the right end screw thread is connected with the left end screw thread of the connecting pipe, and the outer surface of the upper joint is provided with a third sealing groove and an anti-rotation pin groove.
7. A perforation, storage and protection integrated device as claimed in claim 1, wherein the surface of the larger cylinder in the middle of the valve is provided with a strip-shaped groove, the length of the strip-shaped groove is 70-75mm, and the width of the strip-shaped groove is 8-12 mm.
8. The integrated perforation, storage and protection device as claimed in claim 1, wherein the outer surface of the valve seat is provided with a side channel, and the interior of the valve seat is provided with a main channel and a liquid inlet connected with the main channel.
9. The perforating, storing and protecting integrated device as claimed in any one of claims 1 to 8, wherein the T-shaped disc is provided with a groove on the base body, the left end screw thread is connected with the right end screw thread of the valve, and the right end of the T-shaped disc base body is provided with a hexagonal wrench hole.
10. The perforating, storing and protecting integrated device as claimed in claim 9, further comprising a T-shaped packing, wherein the T-shaped packing is a T-shaped plastic seal ring, is mounted in a groove of the T-shaped packing body, and forms two sealing structures together with the conical surface at the right end of the valve.
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| CN202010713944.9A CN111827939B (en) | 2020-07-22 | 2020-07-22 | Perforation storage and protection integrated device |
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| CN111827939B (en) | 2022-08-09 |
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