CN212614652U - Pressurized perforating bullet with combined type cartridge case - Google Patents
Pressurized perforating bullet with combined type cartridge case Download PDFInfo
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- CN212614652U CN212614652U CN202021371492.2U CN202021371492U CN212614652U CN 212614652 U CN212614652 U CN 212614652U CN 202021371492 U CN202021371492 U CN 202021371492U CN 212614652 U CN212614652 U CN 212614652U
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Abstract
The utility model relates to a pressure boost perforating bullet with combined type shell case, it includes shell case, type charge cover and gathers can powder, the shell case embeds there is the type charge cover, packs in the appearance chamber that shell case and type charge cover constitute gather can powder, its characteristics are: the cartridge case is composed of a metal shell and a composite carbon fiber layer on the inner wall of the metal shell, the pressurizing unit is arranged inside the open end of the cartridge case, and the open end of the cartridge case is fixedly connected with the end cover. The working process is as follows: after the energy-gathered gunpowder is detonated, the metal liner forms metal jet flow, the composite fuel layer flows into the incident flow pore passage along with the metal jet flow, the pressurizing unit is pushed to the incident flow pore passage simultaneously by explosive impact, the composite fuel layer and the pressurizing unit are mixed in the pore passage to intensify explosive combustion, release a large amount of high-temperature gas, generate scouring and fracturing effects on the jet flow pore passage, eliminate pore passage compaction pollution, enlarge cracks and improve scouring and fracturing effects.
Description
Technical Field
The utility model relates to an oil gas field exploitation equipment, in particular to perforation operation equipment is a pressure boost perforating bullet with combined type shell case.
Background
In the field of oil production, perforating and fracturing operations are important components of the well completion process. During operation, a perforating gun carries a perforating bullet to a stratum perforating section, and metal jet flow generated after the perforating bullet explodes penetrates through the stratum to form a pore channel so as to complete perforating operation. Because the perforation operation is limited by space environment, the perforation depth of the generated stratum is shallow, the pore path is narrow, and the perforation pore path needs to be enlarged and a large number of cracks are generated in the subsequent fracturing operation to improve the oil gas output. At present, perforation operation has gradually developed to adopt compound perforator to carry out perforation and compromise the mode of fracturing effect and carry out the operation, can eliminate pore compaction pollution, can improve the fracturing effect again for once perforation can obtain more ideal pore effect, has improved oil gas output, has alleviateed the operation complexity simultaneously, has reduced intensity of labour and cost. Composite perforators are typically composed of a perforator gun body, a cartridge carrier, conventional perforating charges, and a cartridge or charge (sheet). When the explosive-proof perforating gun works, the perforating bullet is detonated to form jet flow perforation, and meanwhile, a medicine box or a medicine block (sheet) between the bullet rack and the gun body is ignited. The medicine box or the medicine block (tablet) is made of mixed combustion gunpowder, high-temperature and high-pressure gas generated by combustion in the gun body of the perforator leaks out along the jet perforation and enters the incident flow pore passage to wash the wall of the pore passage, and the purposes of eliminating pollution and improving the fracturing effect are achieved. There are problems in that: 1. because a gap exists between the perforator and the petroleum casing, for example, the petroleum casing with the diameter of 140 mm is usually used with the perforator with the diameter of 102 mm or 127 mm, the gap can reach 10-20 mm, the diameter of a perforation hole channel is usually about 10 mm, the perforation hole channel is relatively small, high-temperature and high-pressure gas generated by burning of gunpowder leaks out along the gap of the casing in a large amount, the amount of burning gas entering the perforation hole channel is reduced, and the scouring fracturing effect is reduced. 2. High-temperature and high-pressure gas is generated when an additional medicine box or a medicine block (piece) between the perforator and the gun body is combusted, the perforator or the gun body is easily damaged, the combustion explosive quantity is small, and the secondary scouring fracturing effect is not obvious; the burning explosive amount is large, so that the perforator or the gun body is broken and the gun is exploded, and the perforation hole of the gun body generates overlarge burrs easily, and the problems can cause that the perforator is clamped in the casing pipe after operation and cannot exit, even damage to the petroleum casing pipe is caused, and difficulty is brought to subsequent operation.
Disclosure of Invention
The utility model discloses the technical problem that will solve is: overcomes the defects of the prior art and provides a pressurized perforating bullet with a composite type shell case.
The utility model provides a technical problem's scheme is: the utility model provides a pressure boost perforating bullet with combined type shell case, it includes shell case, shaped charge cover and energy-collecting powder, the shell case embeds there is the shaped charge cover, packs in the appearance chamber that shell case and shaped charge cover constitute and gathers energy-collecting powder, characterized by: the cartridge case is composed of a metal shell and a composite carbon fiber layer on the inner wall of the metal shell, the pressurizing unit is arranged inside the open end of the cartridge case, and the open end of the cartridge case is fixedly connected with the end cover.
And the top of the cartridge case is provided with a detonation transfer hole communicated with the containing cavity of the cartridge case.
And a composite fuel layer is arranged on the outer wall of the shaped charge liner, and the total mass of the composite fuel layer is 20-30% of the mass of the pressurizing unit.
The composite fuel layer is a mixed material consisting of nano aluminum powder, high-purity aluminum powder and potassium perchlorate.
The composite fuel layer comprises the following components in percentage by mass: 10-20% of nano aluminum powder, 60-80% of high-purity aluminum powder and 10-20% of potassium perchlorate, wherein the sum of the mass percentages of the three components is 100%.
The pressurizing unit is a circular ring body, and the axis of an inner hole of the pressurizing unit is coaxial with the axis of the liner.
The diameter of the inner hole of the pressurizing unit and the diameter of the opening of the containing cavity of the cartridge case have the following relationship:
d=0.5D～0.6D （1）
in the formula: d, the diameter of an inner hole of the pressurizing unit; d, the diameter of the opening of the containing cavity of the cartridge case.
And a concave arc surface is arranged on one surface of the pressurizing unit facing the liner.
The pressurizing unit is made of a composite material consisting of aluminum powder, copper oxide, manganese dioxide, potassium perchlorate, combustion powder and an adhesive.
The pressurizing unit comprises the following components in percentage by mass: 10-20% of aluminum powder, 20-40% of copper oxide, 10-20% of manganese dioxide, 10-20% of potassium perchlorate, 10-20% of combustion powder and 2% of adhesive, wherein the sum of the mass percentages of the components is 100%.
The center of the end cover is provided with a through hole, the periphery of the end cover is provided with a clamping jaw, the diameter of the through hole formed in the center of the end cover is the same as the diameter of an inner hole of the pressurizing unit, and the axis of the through hole is coaxial.
The end cover is made of high-temperature-resistant plastic, and a waterproof sticker is arranged at the central through hole of the end cover, so that a closed space is formed in the cartridge case, and the interior material is prevented from being polluted by damp.
The oral area peripheral surface of shell case sets up the draw-in groove, and the jack catch card that the end cover periphery set up is in the draw-in groove that shell case oral area peripheral surface set up to protect the pressure boost unit, and prevent that it from droing.
The shaped charge liner is a conical body formed by pressing metal powder.
The energy-gathering gunpowder is a simple substance or mixed explosive of RDX, HMX, HNS and PYX.
The utility model discloses a working process is: after energy-gathering gunpowder is detonated, a metal shaped charge cover is crushed under the condition of high temperature and high pressure generated by detonation waves to form metal jet flow, a composite fuel layer flows into an incident flow pore passage along with the metal jet flow, a pressurizing unit is simultaneously pushed into the incident flow pore passage by explosion impact, the composite fuel layer made of a mixed material consisting of nano aluminum powder, high-purity aluminum powder and potassium perchlorate is mixed with the pressurizing unit consisting of aluminum powder, copper oxide, manganese dioxide, potassium perchlorate, combustion gunpowder and an adhesive in the pore passage to intensify explosion combustion, release a large amount of high-temperature gas, generate scouring and fracturing effects on the jet flow pore passage, eliminate pore passage compaction pollution, enlarge cracks and improve the scouring and fracturing effects.
The utility model has the advantages that:
1. the utility model discloses a perforating bullet is normally detonating formation metal jet and is perforated gathering can gunpowder, after the metal jet formed the pore, subsidiary composite fuel layer and pressure boost unit follow the efflux and get into the pore, and the redox reaction that goes on is mixed in the pore, takes place violent explosion burning, and a large amount of high temperature high-pressure gas of secondary release are washd out fracturing effect to the production of efflux orifice. The pressure borne by the gun body of the perforator is reduced, the subsequent scouring fracturing effect in the hole is improved, and the quantity of the combustion gunpowder carried by the perforator is reduced, and the quantity of the composite fuel entering the metal jet hole is improved. The components of the composite fuel layer and the pressurizing unit can be reasonably proportioned, so that the reaction is sufficient, no residue is left, secondary pollution is not caused to a jet hole channel, and the self-cleaning effect is achieved;
2 compared with the prior art, the utility model discloses the pressure boost unit of perforating bullet has nearest distance with gathering can powder, can improve the burning powder medicine volume that gets into the metal jet pore, the aluminium powder that contains in the pressure boost unit that gets into the pore, copper oxide and burning powder violently burn and explode under the high temperature high pressure that the detonation produced in the twinkling of an eye, release a large amount of high-temperature gas, further erode the fracturing extension to the pore, its combustion action time is far greater than the detonation jet time, and the oxide in the stratum also can participate in the reaction, can improve and eliminate compaction pollution, enlarge the cracked effect;
3 the composite fuel layer and the pressurizing unit of the perforating bullet of the utility model are separately arranged, so that no obvious reaction exists between the composite fuel layer and the pressurizing unit at the moment of initiation of energy-gathered gunpowder, the detonation wave is almost not interfered, the stable formation of the metal jet is not influenced, and the stable and reliable perforating performance of the jet is ensured;
4 during the experiment that the utility model discloses the perforating bullet carried out, the burning powder quantity of the cartridge type composite perforating bullet of prior art is used for the utility model discloses in the experiment that the perforating bullet carried out, the perforator phenomenon of bursting appears, and the utility model discloses the pressure boost unit of perforating bullet is the combined material who comprises aluminite powder, copper oxide, burning powder and bonding agent, and for the cartridge type composite perforating bullet of prior art, it has reduced the burning powder quantity, can reduce the cost, has also improved the security to fracturing reaming effect still is superior to the cartridge type composite perforating bullet of prior art;
the utility model discloses the shell case design of perforating bullet is outer metal and inlayer carbon fiber material's composite construction, and the shell case toughness can be reinforceed to the carbon fiber layer of metal shell case inner wall complex, improves its compressive shock resistance. During detonation, the carbon fiber layer of the cartridge case can absorb a large amount of diffusion energy, so that the explosive impact on the gun body of the perforator and the damage of broken pieces of the cartridge case are reduced, and the effects of protecting the gun body and an oil casing and reducing perforation burrs are achieved;
the utility model discloses the perforating bullet has improved its processing, assembly process uniformity, and production, installation and operation are high-efficient convenient, have good security simultaneously. Can reduce the labor complexity and the production cost.
The device has the advantages of simple structure, low cost, good manufacturability, high safety, and high efficiency and convenience in production, installation and operation.
Drawings
Fig. 1 is a schematic structural diagram of a pressurized perforating charge with a composite cartridge case according to the present invention.
In the figure: the composite fuel layer comprises a metal layer 1, a carbon fiber layer 2, energy-gathering powder 3, a pressurizing unit 4, a clamping jaw 5, an end cover 6, a shaped charge cover 7, a composite fuel layer 8 and a detonation transfer hole 9.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
Referring to fig. 1, in embodiment 1, the pressurized perforating bullet with the composite cartridge case in this embodiment includes a cartridge case, a shaped charge liner 7, energy-gathering powder 3, a pressurizing unit 4, and an end cover 6, where the shaped charge liner 7 is disposed in the cartridge case, the energy-gathering powder 3 is filled in a cavity formed by the cartridge case and the shaped charge liner 7, a detonation propagation hole 9 is disposed at the top of the cartridge case and communicated with the cavity of the cartridge case, the cartridge case is composed of a metal casing 1 and a composite carbon fiber layer 2 on the inner wall of the metal casing 1, a composite fuel layer 8 is disposed on the outer wall of the shaped charge liner 7, the pressurizing unit 4 is disposed inside an open end of the cartridge case, and the open end of the cartridge case is fixedly connected with the end cover 6.
The composite fuel layer 8 is a mixed material consisting of nano aluminum powder, high-purity aluminum powder and potassium perchlorate.
The composite fuel layer 8 comprises the following components in percentage by mass: 10-20% of nano aluminum powder, 60-80% of high-purity aluminum powder and 10-20% of potassium perchlorate, wherein the sum of the mass percentages of the components is 100%.
The total mass of the composite fuel layer 8 is 20-30% of the mass of the pressurizing unit 4.
The pressurizing unit 4 is a circular ring body, and the axis of an inner hole of the pressurizing unit 4 is coaxial with the axis of the liner 7.
The diameter of the inner hole of the pressurizing unit 4 and the diameter of the opening of the containing cavity of the cartridge case have the following relationship:
d=0.5D （1）
in the formula: d is the diameter of the inner hole of the pressurizing unit 4; d, the diameter of the opening of the containing cavity of the cartridge case.
And a concave arc surface is arranged on one surface of the pressurizing unit 4 facing the liner 7.
The pressurizing unit 4 is made of a composite material consisting of aluminum powder, copper oxide, manganese dioxide, potassium perchlorate, combustion powder and an adhesive.
The aluminum powder, copper oxide, manganese dioxide, potassium perchlorate, combustion powder and adhesive of the pressurizing unit 4 are as follows by mass percent: 10-20% of aluminum powder, 20-40% of copper oxide, 10-20% of manganese dioxide, 10-20% of potassium perchlorate, 10-20% of combustion powder and 2% of adhesive, wherein the sum of the mass percentages of the components is 100%.
The center of end cover 6 is equipped with the through-hole, the periphery is equipped with jack catch 5, and the through-hole diameter that the end cover 6 center was equipped with is the same with the hole diameter of pressure unit 4, and its axis is coaxial.
The end cover 6 is made of high-temperature-resistant plastic, and a round waterproof sticker is arranged on the outer side of the central through hole of the end cover so as to form a closed space in the cartridge case and prevent internal materials from being polluted by damp.
The oral area peripheral surface of shell case sets up the draw-in groove, 5 blocks of jack catch that 6 peripheries of end cover set up are in the draw-in groove that shell case oral area peripheral surface set up to protect pressure boost unit 4, and prevent that it from droing.
The liner 7 is a cone formed by pressing metal powder.
The energy-gathered gunpowder 3 is mixed explosive.
The present embodiment is manufactured using prior art techniques.
The using process of the embodiment is as follows: after the energy-gathering powder 3 of the embodiment is detonated, the metal shaped charge cover 7 is crushed under the condition of high temperature and high pressure generated by detonation waves to form metal jet flow, the composite fuel layer 8 enters an incident flow pore passage along with the metal jet flow, the pressurizing unit 4 is simultaneously pushed to the incident flow pore passage by explosion impact, the composite fuel layer 8 made of a mixed material consisting of nano aluminum powder, high-purity aluminum powder and potassium perchlorate is mixed with the pressurizing unit 4 consisting of aluminum powder, copper oxide, manganese dioxide, potassium perchlorate, combustion powder and an adhesive in the pore passage to intensify explosion combustion, a large amount of high-temperature gas is released, a scouring and fracturing effect is generated on the jet flow pore passage, pore passage compaction pollution is eliminated, cracks are enlarged, and the scouring and fracturing effect is improved.
The present invention is not limited to the present embodiment, and those skilled in the art can easily copy and modify the present invention without creative work, and the present invention is protected by the claims.
Claims (8)
1. The utility model provides a pressure boost perforating bullet with combined type shell case, it includes shell case, shaped charge cover and energy-collecting powder, the shell case embeds there is the shaped charge cover, packs in the appearance chamber that shell case and shaped charge cover constitute and gathers energy-collecting powder, characterized by: the cartridge case is composed of a metal shell and a composite carbon fiber layer on the inner wall of the metal shell, the pressurizing unit is arranged inside the open end of the cartridge case, and the open end of the cartridge case is fixedly connected with the end cover.
2. The pressurized perforating charge with composite casing of claim 1, wherein: and a composite fuel layer is arranged on the outer wall of the shaped charge liner, and the total mass of the composite fuel layer is 20-30% of the mass of the pressurizing unit.
3. The pressurized perforating charge with composite casing of claim 1, wherein: the pressurizing unit is a circular ring body, and the axis of an inner hole of the pressurizing unit is coaxial with the axis of the liner.
4. The supercharged perforating charge with composite casing of claim 1 or 3, characterized in that: the diameter of the inner hole of the pressurizing unit and the diameter of the opening of the containing cavity of the cartridge case have the following relationship:
d=0.5D～0.6D （1）
in the formula: d, the diameter of an inner hole of the pressurizing unit; d, the diameter of the opening of the containing cavity of the cartridge case.
5. The pressurized perforating charge with composite casing of claim 1, wherein: and a concave arc surface is arranged on one surface of the pressurizing unit facing the liner.
6. The pressurized perforating charge with composite casing of claim 1, wherein: the center of the end cover is provided with a through hole, the periphery of the end cover is provided with a clamping jaw, the diameter of the through hole formed in the center of the end cover is the same as the diameter of an inner hole of the pressurizing unit, and the axis of the through hole is coaxial.
7. The pressurized perforating charge with composite casing of claim 1, wherein: the end cover is made of high-temperature-resistant plastic, and a waterproof sticker is arranged at the central through hole of the end cover, so that a closed space is formed in the cartridge case, and the interior material is prevented from being polluted by damp.
8. The pressurized perforating charge with composite casing of claim 1, wherein: the oral area peripheral surface of shell case sets up the draw-in groove, and the jack catch card that the end cover periphery set up is in the draw-in groove that shell case oral area peripheral surface set up to protect the pressure boost unit, and prevent that it from droing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021371492.2U CN212614652U (en) | 2020-07-14 | 2020-07-14 | Pressurized perforating bullet with combined type cartridge case |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021371492.2U CN212614652U (en) | 2020-07-14 | 2020-07-14 | Pressurized perforating bullet with combined type cartridge case |
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| CN212614652U true CN212614652U (en) | 2021-02-26 |
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| CN202021371492.2U Active CN212614652U (en) | 2020-07-14 | 2020-07-14 | Pressurized perforating bullet with combined type cartridge case |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111734365A (en) * | 2020-07-14 | 2020-10-02 | 吉林市双林射孔器材有限责任公司 | Pressurized perforating bullet with combined type cartridge case |
| CN113402347A (en) * | 2021-06-09 | 2021-09-17 | 西安物华巨能爆破器材有限责任公司 | Combustion agent, ultrahigh-temperature jet flow synergist for increasing petroleum yield by adopting combustion agent and preparation method of ultrahigh-temperature jet flow synergist |
-
2020
- 2020-07-14 CN CN202021371492.2U patent/CN212614652U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111734365A (en) * | 2020-07-14 | 2020-10-02 | 吉林市双林射孔器材有限责任公司 | Pressurized perforating bullet with combined type cartridge case |
| CN113402347A (en) * | 2021-06-09 | 2021-09-17 | 西安物华巨能爆破器材有限责任公司 | Combustion agent, ultrahigh-temperature jet flow synergist for increasing petroleum yield by adopting combustion agent and preparation method of ultrahigh-temperature jet flow synergist |
| CN113402347B (en) * | 2021-06-09 | 2022-09-09 | 西安物华巨能爆破器材有限责任公司 | Combustion agent, ultrahigh-temperature jet flow synergist for increasing petroleum yield by adopting combustion agent and preparation method of ultrahigh-temperature jet flow synergist |
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