CN103670346B - Oil-gas well focusing perforation delayed detonation technology - Google Patents
Oil-gas well focusing perforation delayed detonation technology Download PDFInfo
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- CN103670346B CN103670346B CN201310656220.5A CN201310656220A CN103670346B CN 103670346 B CN103670346 B CN 103670346B CN 201310656220 A CN201310656220 A CN 201310656220A CN 103670346 B CN103670346 B CN 103670346B
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- bullet
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- perforation
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- 238000005516 engineering process Methods 0.000 title abstract description 6
- 238000005474 detonation Methods 0.000 title abstract 6
- 230000003111 delayed effect Effects 0.000 title abstract 5
- 239000002360 explosive Substances 0.000 claims abstract description 36
- 230000037452 priming Effects 0.000 claims description 26
- 239000003814 drug Substances 0.000 claims description 13
- 239000000428 dust Substances 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 12
- XTFIVUDBNACUBN-UHFFFAOYSA-N 1,3,5-trinitro-1,3,5-triazinane Chemical group [O-][N+](=O)N1CN([N+]([O-])=O)CN([N+]([O-])=O)C1 XTFIVUDBNACUBN-UHFFFAOYSA-N 0.000 claims description 8
- YSIBQULRFXITSW-OWOJBTEDSA-N 1,3,5-trinitro-2-[(e)-2-(2,4,6-trinitrophenyl)ethenyl]benzene Chemical group [O-][N+](=O)C1=CC([N+](=O)[O-])=CC([N+]([O-])=O)=C1\C=C\C1=C([N+]([O-])=O)C=C([N+]([O-])=O)C=C1[N+]([O-])=O YSIBQULRFXITSW-OWOJBTEDSA-N 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000005056 compaction Methods 0.000 abstract description 4
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 230000000977 initiatory effect Effects 0.000 abstract 4
- 239000011148 porous material Substances 0.000 description 6
- 239000003129 oil well Substances 0.000 description 3
- 239000012255 powdered metal Substances 0.000 description 3
- 238000010304 firing Methods 0.000 description 2
- 238000012827 research and development Methods 0.000 description 2
- 239000004568 cement Substances 0.000 description 1
- 230000002153 concerted effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
Abstract
Provided is an oil-gas well focusing perforation delayed detonation technology. The invention relates to an underground perforation detonation technology in oil-gas production, in particular to a focusing perforation delayed detonation technology. The oil-gas well focusing perforation delayed detonation technology includes the steps of combining three perforating bullets into one perforating unit and producing perforating bullets. The initiating explosive of the 1# bullet is RDX, the initiating explosive of the 2# bullet is HMX, and the initiating explosive of the main bullet is HNS. A certain angle is formed between each perforating bullet and a perforating bullet carrier, and the lower openings of the bullets are in the mode of centripetal focusing. When used, the perforating bullets are loaded into a perforating gun which is placed deep into an underground target layer, and the bullets are detonated by a detonating fuse. Due to the fact that the initiating explosives of the 1# bullet, the 2# bullet and the main bullet are different, the response time is also different, the two auxiliary bullets are detonated first, and the main bullet is detonated in a delayed mode, the phenomenon that explosive forces are cancelled out cannot occur. In addition, the three perforating bullets are arranged in the mode of centripetal focusing so that high-speed air flows generated by detonation can impact in a centripetal and force-joining mode, impact force is strengthened, and three air flows have impact on formation simultaneously so that perforation volume can be increased and compaction bands can be improved. Oil and gas can flow into wells smoothly, and therefore oil and gas production is improved.
Description
Technical field
The present invention relates to downhole perforation detonating technique in oil-gas mining operation, be specially a kind of focusing perforation and postpone the method for ignition.To reach, enhance the object that adds Oil & Gas Productivity.
Background technology
In oil exploitation operation, perforating bullet is the explosive that makes air blast enter stratum certain depth and form perforation for punching oil well casing, cement sheath.After perforating bullet perforation, between subterranean oil gas-bearing formation and oil well casing, form gas channel, make gas stream enter oil well smoothly and be mined to ground.The pore volume of the perforation that therefore blast forms just has very large impact to the amount of gathering of oil gas.Perforation pore volume is larger, and the mobility of oil, air-flow is better, and the amount of gathering is also just larger.Therefore, how in blast perforating job, to increase the important topic that perforation pore volume is production and R&D institution's research and development.The perforating bullet adopting in production operation at present, what its priming adopted is same kind, because the property of medicine is identical, burst time is also identical, will cause like this phase mutual interference between bullet and bullet, and the phenomenon that explosive force is cancelled out each other occurs, so just greatly affected perforating effect, perforating depth is inadequate, and the little problem in aperture occurs, thereby has influence on oil and gas production.In addition, the arrangement mode of perforating bullet on perforating bullet rack is spiral arrangement, so after detonating, the air blast that each perforating bullet produces moves towards to disperse.Also affect the compaction band in perforation pore volume and duct.
Summary of the invention
For above-mentioned situation, the object of this invention is to provide a kind of echelon that realizes and detonate, and can make air blast realize the method for ignition of centripetal focusing, to increase perforation pore volume, to improve duct compaction band, solve the problem that prior art exists.
Technical scheme of the present invention is as follows:
1, combination perforating bullet unit
With three launch hole bullets, form perforating bullet unit, main sticking position is in centre, and two send out sticking position auxiliary in main bullet both sides.Be installed in perforating bullet rack.The angle of main bullet and perforating bullet rack is 90 degree.1# bullet and perforating bullet rack are 94-98 degree.2# bullet and perforating bullet rack angle are 82-86 degree.The under shed of three launch hole bullets is centripetal focus version.
2, perforating bullet is made
The structure of the main bullet of 2-1
The structure of main bullet is: in shell case 1 with explosive column 3, below explosive column with metal dust type cover 4.At the top of shell case, have a priming groove 2, the priming in medicine groove is hexanitro Stilbene.The consumption of hexanitro Stilbene is 6-7g.Density is 1.60/cm
3.
The structure of the auxiliary bullet of 2-2
1# bullet: in shell case 5 with explosive column 7, below explosive column with metal dust type cover 8.At the top of shell case, have a priming groove 6, the priming in medicine groove is Cyclotrimethylene trinitramine.Cyclotrimethylene trinitramine consumption is 1-2g.Density is 1.63/cm
3.
2# bullet: in shell case 9 with explosive column 10, below explosive column with metal dust type cover 11.At the top of shell case, have a priming groove 12, the priming in medicine groove is HMX.Consumption is 4-5g.Density is 1.68/cm
3.
Using method of the present invention is: 1# bullet, 2# bullet and main bullet are installed in perforating bullet rack by erection sequence, adjust centripetal angle.Again perforating bullet rack is loaded on to perforating gun, is deep into down-hole target zone, under the ignition of detonating fuse, explode.Because the priming of 1# bullet, 2# bullet and main bullet is different, its reaction time is also different, and two send out bullet auxiliary explodes in advance, then main bullet blast.So can not cause phase mutual interference between bullet and bullet, the phenomenon that explosive force is cancelled out each other occurs.Also because the installing angle of each perforating bullet is centripetal focus version.The high velocity air that blast the is produced centripetal impact of making a concerted effort, has so just strengthened impact force greatly, and three strands of air-flows are impinge upon earth strata simultaneously, make the pore volume increase of perforation.Because explosive force increases, the degree of compaction of perforation is improved greatly simultaneously.Will make like this oil gas to flowing and become smooth and easy in well, therefore improve oil and gas production.
Accompanying drawing explanation
Fig. 1 is 1# bullet structural representation of the present invention
1-shell case, 2-priming groove, 3-explosive column, 4-powdered metal liner
Fig. 2 is the auxiliary bullet of the present invention 2# bullet structural representation
5-shell case, 6-priming groove, 7-explosive column, 8-powdered metal liner
Fig. 3 is the main bullet structural representation of the auxiliary bullet of the present invention
9-shell case, 10-priming groove, 11-explosive column, 12-powdered metal liner
Fig. 4 is that perforating bullet of the present invention unit arranges schematic diagram in perforating bullet rack
13-detonating fuse, 14-1# perforating bullet 15-main bullet 16-2# perforating bullet, 17-air blast arrow is propagation of explosion direction
The specific embodiment
Below in conjunction with each accompanying drawing, the invention will be further described
Embodiment 1
1, combination perforating bullet unit
With three launch hole bullets, form perforating bullet unit, main sticking position is in centre, and two send out sticking position auxiliary in main bullet both sides.Be installed in perforating bullet rack.Main bullet and perforating bullet rack angle are 90 degree.1# bullet and perforating bullet rack are 96 degree.2# bullet and perforating bullet rack angle are 84 degree.The under shed of three launch hole bullets is centripetal focus version.
2, perforating bullet is made
The structure of the main bullet of 2-1
The structure of main bullet is: in shell case 1 with explosive column 3, below explosive column with metal dust type cover 4.At the top of shell case, have a priming groove 2, the priming in medicine groove is hexanitro Stilbene.The consumption of hexanitro Stilbene is 6g.Density is 1.60/cm
3.。
The structure of the auxiliary bullet of 2-2
1# bullet: in shell case 5 with explosive column 7, below explosive column with metal dust type cover 8.At the top of shell case, have a priming groove 6, the priming in medicine groove is Cyclotrimethylene trinitramine.Cyclotrimethylene trinitramine consumption is 2g, and density is 1.63/cm
3.
2# bullet: in shell case 9 with explosive column 10, below explosive column with metal dust type cover 11.At the top of shell case, have a priming groove 12, the priming in medicine groove is HMX.HMX consumption is 4g, and density is 1.68/cm
3.。
The firing order of perforating bullet is that 1#, 2# bullet detonate simultaneously, and main bullet postpones to detonate, and time delay, t met 9 μ s≤t≤22 μ s.
Embodiment 2
1, combination perforating bullet unit
With three launch hole bullets, form perforating bullet unit, main sticking position is in centre, and two send out sticking position auxiliary in main bullet both sides.Be installed in perforating bullet rack.Main bullet and perforating bullet rack angle are 90 degree.1# bullet and perforating bullet rack are 94 degree.2# bullet and perforating bullet rack angle are 82 degree.The under shed of three launch hole bullets is centripetal focus version.
2, perforating bullet is made
The structure of the main bullet of 2-1
The structure of main bullet is: in shell case 1 with explosive column 3, below explosive column with metal dust type cover 4.At the top of shell case, have a priming groove 2, the priming in medicine groove is hexanitro Stilbene.The consumption of hexanitro Stilbene is 7g.Density is 1.60/cm
3.。
The mechanism of the auxiliary bullet of 2-2
1# bullet: in shell case 5 with explosive column 7, below explosive column with metal dust type cover 8.At the top of shell case, have a priming groove 6, the priming in medicine groove is Cyclotrimethylene trinitramine.Cyclotrimethylene trinitramine consumption is 1g.Density is 1.63/cm
3.
2# bullet: in shell case 9 with explosive column 10, below explosive column with metal dust type cover 11.At the top of shell case, have a priming groove 12, the priming in medicine groove is HMX.Consumption is 5g.Density is 1.68/cm
3.。
The firing order of perforating bullet is that 1#, 2# bullet detonate simultaneously, and main bullet postpones to detonate, and time delay, t met 9 μ s≤t≤22 μ s.
Claims (1)
1. Oil/gas Well focuses on the perforation delay method of ignition, it is characterized in that:
Combination perforating bullet unit:
With three launch hole bullets, form perforating bullet unit, main sticking position is in centre, and two send out sticking position auxiliary in main bullet both sides, main bullet and perforating bullet rack angle are 90 degree, 1# bullet and perforating bullet rack are 94-98 degree, and 2# bullet and perforating bullet rack angle are 82-86 degree, and the under shed of three launch hole bullets is centripetal focus version;
Perforating bullet is made:
The structure of main bullet:
In shell case (1) with explosive column (3), below explosive column, with metal dust type cover (4), have a priming groove (2) at the top of shell case, the priming in medicine groove is hexanitro Stilbene, the consumption of hexanitro Stilbene is 6-7g, and density is 1.60/cm
3;
The structure of auxiliary bullet:
1# bullet: in shell case (5) with explosive column (7), below explosive column, with metal dust type cover (8), have a priming groove (6) at the top of shell case, the priming in medicine groove is Cyclotrimethylene trinitramine, Cyclotrimethylene trinitramine consumption is 1-2g, and density is 1.63/cm
3;
2# bullet: in shell case (9) with explosive column (10), below explosive column, with metal dust type cover (11), have a priming groove (12) at the top of shell case, the priming in medicine groove is HMX, HMX consumption is 4-5g, and density is 1.68/cm
3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310656220.5A CN103670346B (en) | 2013-11-29 | 2013-11-29 | Oil-gas well focusing perforation delayed detonation technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310656220.5A CN103670346B (en) | 2013-11-29 | 2013-11-29 | Oil-gas well focusing perforation delayed detonation technology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103670346A CN103670346A (en) | 2014-03-26 |
| CN103670346B true CN103670346B (en) | 2014-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310656220.5A Active CN103670346B (en) | 2013-11-29 | 2013-11-29 | Oil-gas well focusing perforation delayed detonation technology |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106761598B (en) * | 2016-12-15 | 2018-12-25 | 长春工业大学 | A kind of method of ignition reducing perforation charge interference |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6748843B1 (en) * | 1999-06-26 | 2004-06-15 | Halliburton Energy Services, Inc. | Unique phasings and firing sequences for perforating guns |
| CN1878929A (en) * | 2003-10-14 | 2006-12-13 | Molycorp公司 | Method to improve perforating effectiveness using a charge perforator |
| CN101260799A (en) * | 2008-04-03 | 2008-09-10 | 北京应用物理与计算数学研究所 | Perforating bullet |
| CN201531259U (en) * | 2009-11-24 | 2010-07-21 | 中国航天科技集团公司川南机械厂 | Perforating bullet of high perforation density deep penetration perforator for oil and gas well |
| CN201581876U (en) * | 2009-12-16 | 2010-09-15 | 中国海洋石油总公司 | Large aperture ultra-deep penetrating perforator for oil and gas wells |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7409992B2 (en) * | 2006-01-11 | 2008-08-12 | Schlumberger Technology Corporation | Perforating gun |
-
2013
- 2013-11-29 CN CN201310656220.5A patent/CN103670346B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6748843B1 (en) * | 1999-06-26 | 2004-06-15 | Halliburton Energy Services, Inc. | Unique phasings and firing sequences for perforating guns |
| CN1878929A (en) * | 2003-10-14 | 2006-12-13 | Molycorp公司 | Method to improve perforating effectiveness using a charge perforator |
| CN101260799A (en) * | 2008-04-03 | 2008-09-10 | 北京应用物理与计算数学研究所 | Perforating bullet |
| CN201531259U (en) * | 2009-11-24 | 2010-07-21 | 中国航天科技集团公司川南机械厂 | Perforating bullet of high perforation density deep penetration perforator for oil and gas well |
| CN201581876U (en) * | 2009-12-16 | 2010-09-15 | 中国海洋石油总公司 | Large aperture ultra-deep penetrating perforator for oil and gas wells |
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| CN103670346A (en) | 2014-03-26 |
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| TR01 | Transfer of patent right |
Effective date of registration: 20231123 Address after: 030600 North confluence, Yuci District, Jinzhong City, Shanxi Province Patentee after: Jinzhong Desheng Perforating Equipment Co.,Ltd. Address before: No. 82 Jinniushan Street West, Xishi District, Yingkou City, Liaoning Province, 115004 Patentee before: YINGKOU DOUBLE DRAGON PERFORATING EQUIPMENT Co.,Ltd. |
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| TR01 | Transfer of patent right |