CN103541696B - A kind of classification supercharging composite perforator - Google Patents
A kind of classification supercharging composite perforator Download PDFInfo
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- CN103541696B CN103541696B CN201310551913.8A CN201310551913A CN103541696B CN 103541696 B CN103541696 B CN 103541696B CN 201310551913 A CN201310551913 A CN 201310551913A CN 103541696 B CN103541696 B CN 103541696B
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Abstract
The present invention relates to a kind of classification supercharging composite perforator, described device comprises: block device, oil pipe, sleeve pipe, perforating gun, perforating bullet, retainer ring, one-level supercharging medicine box, two-stage supercharging medicine cake, three grades of supercharging annular cartridges, three grades of supercharging annular pyrotechnic device, primacord, firing mount. The superior effect of the method for the invention is: 1, can realize that explosive payload is large, fractional combustion, continue supercharging, effective pressure long action time, improve the perforation tunnel permeability of oil-gas Layer around, thereby improve Oil & Gas Productivity. 2, have in effective confined space and continue to provide the function of effective actuating pressure and effective acting time, thereby make perforation tunnel extend expansion with crack form, destroy compaction band, clean duct. 3, the sealing blocking-up of occluding device to gas, has extended the action time of high energy gas to perforation tunnel, has increased the active force of high energy gas to perforation tunnel.
Description
Technical field
The present invention relates to a kind of perforating system, relate in particular to a kind of classification supercharging composite perforator.
Background technology
Perforation refers to and utilizes perforator, penetrates that Chuanfeng closes the sleeve pipe of payzone and cement sheath until stratum, and the operation of linking up the fluid passage between pit shaft and payzone, is the critical process being together connected in drilling well and between recovering the oil. From 1910, with mechanical bit rotary drilling on sleeve pipe. Nineteen twenty-six, invent bullet perforating method. The application of the Mohaupt effect of high explosive in 1945 in gun perforation process, has developed Oil/gas Well lined-cavity charge, and nineteen forty-six is perforation in open hole well first, perforation in the two muzzle pipe wells of Mississippi in 1948. Lined-cavity charge penetration power is strong, and efficiency is high, and from then on jet perforating technology has obtained developing rapidly in petroleum industry.
The main Perforating Techniques that China oil field uses at present has: underbalance perforating technology, ultra-positive pressure perforating technology, combined perforation fracturing technology, mistake oil pipe opening type perforating technology, hydraulic slotted liner technique perforating technology.
The principle features of underbalance perforating technology is: when perforation, adopt low-density perforating fluid or reduce liquid-column height, make bottom pressure suitably be less than strata pressure, contribute to clean perforation to penetrate eye, wash away the perforating bullet metal fragment that is attached to rock surface, reduce compaction band infringement, form clean unimpeded duct, also can prevent that the particulate in completion fluid is penetrated into stratum, damage simultaneously. The realization of negative pressure is generally to adjust well killing fluid density or reduce liquid level in pit shaft.
Chinese Patent Application No. a kind of reactive Oil/gas Well flexible linear-shaped charge perforator lining that has been 200880012703.9 Patent Application Publication, described lining comprises reactive composition, described reactive composition comprises at least two kinds of metals that exothermic reaction can occur, wherein said lining also comprises at least one other metal, described other metals can not with 10% weight of the amount of described at least two kinds of metal generation exothermic reactions and described other metals higher than described lining.
Above-mentioned disclosed underbalance perforating technology is still deposited defect in the following areas: after perforating bullet perforation, formation material is subject to high temperature, high pressure draught and impacts, and produces certain thickness compaction band around perforation tunnel, permeability reduction 10%-20%. Explosive payload is few, and surge pressure is low, and effective pressure action time is short, and the space that produces gas effect is large, has reduced the extension in crack, perforation tunnel and the plugging removal effect of duct compaction band, affects oil gas well capacity.
Summary of the invention
The technical problem to be solved in the present invention is the defect that overcomes prior art, and a kind of classification supercharging composite perforator that overcomes above-mentioned technical problem is provided.
In order to solve the problems of the technologies described above, the technical scheme of a kind of classification supercharging composite perforator of the present invention is as follows:
A kind of classification supercharging composite perforator, comprise: block device, oil pipe, sleeve pipe, perforating gun, perforating bullet, retainer ring, one-level supercharging medicine box, two-stage supercharging medicine cake, three grades of supercharging annular cartridges, three grades of supercharging annular pyrotechnic device, primacord, firing mount, described one-level supercharging medicine box is arranged on perforating bullet front end coaxially radially, described block device is arranged on oil pipe external diameter, described block device and oil pipe are built in sleeve pipe, between described block device reset condition and sleeve pipe, leave gap, described two-stage supercharging medicine cake is arranged between perforating bullet, described three grades of superchargings annular pyrotechnic device is fixed on perforating gun outside by retainer ring, described primacord connects firing mount.
Further, described one-level supercharging medicine box is the cylindrical allumen housing of external diameter φ 60mm, high 20mm, and many components gunpowder is housed in housing by different level.
Further, described block device is made up of double-lipped high elastic rubber inner lining steel skeleton.
Further, described block device and sleeve pipe leave 3mm-5mm gap.
Further, described two-stage supercharging medicine cake is circular medicine cake, and interior primer quality is 25g.
Beneficial effect of the present invention is:
1, can realize that explosive payload is large, fractional combustion, continue supercharging, effective pressure long action time, improve the perforation tunnel permeability of oil-gas Layer around, thereby improve Oil & Gas Productivity.
2, have in effective confined space and continue to provide the function of effective actuating pressure and effective acting time, thereby make perforation tunnel extend expansion with crack form, destroy compaction band, clean duct.
3, one-level supercharging medicine box and perforating bullet are coaxially radially installed; The fractional combustion pressurization of two-stage supercharging medicine cake, three grades of supercharging annular gunpowder; The sealing blocking-up of occluding device to gas, has extended the action time of high energy gas to perforation tunnel, has increased the active force of high energy gas to perforation tunnel.
Brief description of the drawings
Figure 1 shows that a kind of classification supercharging composite perforator schematic diagram.
Figure 2 shows that block device structural representation of the present invention.
Figure 3 shows that one-level supercharging medicine box structural representation of the present invention.
Figure 4 shows that two-stage supercharging medicine cake structure schematic diagram of the present invention.
Figure 5 shows that three grades of supercharging annular pyrotechnic device structural representations of the present invention.
Mark is as follows: 1-block device, 2-oil pipe, 3-sleeve pipe, 4-perforating gun, 5-firing mount, 6-perforating bullet, tri-grades of supercharging annular pyrotechnic device of 7-, 8-retainer ring, 9-one-level supercharging medicine box, tri-grades of supercharging annular cartridges of 10-, 11-two-stage supercharging medicine cake, 12-primacord.
Detailed description of the invention
Below in conjunction with Figure of description, the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein, only for description and interpretation the present invention, is not intended to limit the present invention.
Described a kind of classification supercharging composite perforator, comprise: block device 1, oil pipe 2, sleeve pipe 3, perforating gun 4, perforating bullet 6, retainer ring 8, one-level supercharging medicine box 9, two-stage supercharging medicine cake 11, three grades of supercharging annular cartridges 10, three grades of supercharging annular pyrotechnic device 7, primacord 12, firing mount 5, described one-level supercharging medicine box 9 is arranged on perforating bullet 6 front ends coaxially radially, described block device 1 is arranged on oil pipe 2 external diameters, described block device 1 and oil pipe 2 are built in sleeve pipe, between described block device 1 reset condition and sleeve pipe 3, leave gap, described two-stage supercharging medicine cake 11 is arranged between perforating bullet 6, described three grades of superchargings annular pyrotechnic device 7 is fixed on perforating gun 4 outsides by retainer ring 8, described primacord 12 connects firing mount 5.
As depicted in figs. 1 and 2, described block device 1 can move up and down with oil pipe 2 in sleeve pipe 3, after perforating bullet 6 perforations while producing gases at high pressure upper punch, pressure-acting is at block device 1, in the time that pressure is greater than 30MPa, block device 1 is produced strain by gas extrusion, with sleeve pipe 3 inwalls, oil pipe 2 outer wall close contacts, play sealing function, leaking of blocking-up gases at high pressure done work gases at high pressure in the airtight confined space, and the gas energy overwhelming majority acts on perforation tunnel, thereby extend the time of effective acting of gases at high pressure, improve the utilization rate of gases at high pressure. After perforating job finishes, the pressure in sleeve pipe 3 reduces gradually, and when pressure is during lower than 30MPa, the block device being out of shape by gas extrusion can, under self elasticity, recover reset condition, depressurization.
As shown in figures 1 and 3, described one-level supercharging medicine box 9 is cylindrical allumen housings of external diameter φ 60mm, high 20mm, and many components gunpowder (not shown) is housed in housing by different level. Described many components gunpowder forms (not shown) by ignition charge (not shown), propellant (not shown), proppant. In order to be conducive to propellant, proppant can more enter perforation tunnel (not shown), reach lasting useful effect power and effective acting time, carried out point other adaptability design density, granularity, intensity, the duration of ignition and the burning time to propellant and proppant. The energy-gathering jetting that perforating bullet 6 forms is when sleeve pipe 3 and oil reservoir 2 form perforation tunnel, light the propellant of one-level supercharging medicine box 9 internal layers, produce a large amount of detonation gas at a high speed, perforation tunnel is washed away and pressure break, proppant carried as side-arm flows to into crack, duct, and crack, duct is supported. Gas pressure peak value when one-level supercharging medicine box 9 burns is 60-65MPa, and effective pressure action time is 8-12ms, and combustion speed is 2.2mm/s.
Described block device 1 is made up of double-lipped high elastic rubber inner lining steel skeleton. Described block device 1 can ensure sleeve pipe 3 internal pressure moments raise play sealing blocking effect, sleeve pipe 3 internal pressures are not leaked, in airtight space, do work. Thereby the time that extends effective acting of gases at high pressure, makes the gas energy overwhelming majority act on perforation tunnel, improve the utilization rate of gases at high pressure.
Described block device 1 leaves 3mm-5mm gap with sleeve pipe 3.
Described two-stage supercharging medicine cake 11 is circular medicine cake, and interior primer quality is 25g. Described two-stage supercharging medicine cake 11 is to utilize perforating bullet 6 detonations, Jet Formation and composite propellant detonation to form the time difference that high pressure exists, after perforation, first one-level supercharging medicine box 9 forms peak value, two-stage supercharging medicine cake 11 forms actuating pressure and the time of continuous and effective, make perforation tunnel further extend expansion with the form in crack, play reaming, make seam, destroy the effect of compaction band.
Described three grades of superchargings annular cartridge 10 is to utilize perforating bullet 6 detonations, Jet Formation and 11 detonations of two-stage supercharging medicine cake to form the time difference that high pressure exists, the peak value that the gases at high pressure correlation hole that after perforation, three grades of superchargings annular pyrotechnic device 7 produces forms, the actuating pressure that continues to remain valid and action time, further excite duct crackle, destroy compaction band, clean duct, improve oil-gas Layer flow conductivity.
Adopt oil pipe 2 conveying gun perforation modes to be transported to oil gas interval by connecting intact classification supercharging composite perforator, block device automatic-sealed when rear sleeve 3 internal pressures of detonating reach 20MPa, perforating and fracturing completes rear sleeve internal pressure and is reduced to 20MPa automatic deblocking of block device when following, completes perforating and fracturing operation.
As shown in Figure 1 and Figure 4, two-stage supercharging medicine cake 11 is contained between perforating bullet 6, to utilize perforating bullet 6 detonations to be lighted, its burning time is slower than the summary of one-level supercharging medicine box 9 with burning velocity, poor with one-level supercharging medicine box 9 detonations formation high pressure life periods, after perforation, first one-level supercharging medicine box 9 forms peak value, the pressure that two-stage supercharging medicine cake 11 produces thereupon extends the duration of the pressure peak of one-level supercharging medicine box 9, make perforation tunnel further extend expansion with the form in crack, destroy compaction band. Two-stage supercharging medicine cake 11 is circular medicine cake, and charging quality is 25g, and when burning, gas pressure reaches 65-70MPa, and effective pressure action time is 10-14ms, and combustion speed is 4mm/s.
As shown in Figure 1 and Figure 5, three grades of supercharging annular pyrotechnic device 7 are annular shape gunpowder, be fixed on the design attitude of perforating gun 4 outsides by retainer ring 8, utilize the jet of perforating bullet 6 to be lighted, first perforating bullet jet lights three grades of supercharging annular cartridges 10 in three grades of supercharging annular pyrotechnic device 7, other gunpowder is lighted in igniting agent time delay, other powder combustion time is slower than the summary of two-stage supercharging medicine cake 9 with burning velocity, form high pressure with 11 detonations of two-stage supercharging medicine cake and exist the time difference, two-stage supercharging medicine cake 11 after continuing to maintain perforation is formed surge pressure action time by the pressure of three grades of supercharging annular pyrotechnic device 7 gases that produce. make perforation tunnel further extend expansion with the form in crack, more effectively destroy compaction band. the charging quality of three grades of supercharging annular pyrotechnic device 7 is 3-5Kg, and it is depending on the technology status of Oil/gas Well. when burning, gas pressure reaches 65-75MPa, and effective pressure action time is 110-120ms, and combustion speed is 6.5mm/s. it is nonflammable that three grades of superchargings annular pyrotechnic device 7 has ground, the performance characteristics that can only burn under the certain environmental pressure in down-hole.
The present invention is not limited to above-mentioned embodiment, and in the situation that not deviating from flesh and blood of the present invention, any distortion, improvement, the replacement it may occur to persons skilled in the art that all falls into the protection domain that claim of the present invention is recorded.
Claims (4)
1. a classification supercharging composite perforator, is characterized in that, described perforating system comprises: block device, oil pipe, coverPipe, perforating gun, perforating bullet, retainer ring, one-level supercharging medicine box, two-stage supercharging medicine cake, three grades of supercharging annular cartridges,Three grades of superchargings annular pyrotechnic device, primacord, firing mount, described one-level supercharging medicine box is arranged on perforating bullet front end coaxially radially,Described block device is arranged on oil pipe external diameter, and described block device and oil pipe are built in sleeve pipe, and described block device is high-elastic by double-lippedProperty rubber liner steel skeleton form, between described block device reset condition and sleeve pipe, leave gap, described two-stage supercharging medicine cake arrangesBetween perforating bullet, described three grades of superchargings annular pyrotechnic device by retainer ring be fixed on perforating gun outside, described primacord connectsConnect firing mount.
2. a kind of classification supercharging composite perforator according to claim 1, is characterized in that, described one-level supercharging medicineBox is the cylindrical allumen housing of external diameter φ 60mm, high 20mm, and many components gunpowder is housed in housing by different level.
3. a kind of classification supercharging composite perforator according to claim 1, is characterized in that described block device and coverPipe leaves 3mm-5mm gap.
4. a kind of classification supercharging composite perforator according to claim 1, is characterized in that described two-stage supercharging medicineCake is circular medicine cake, and interior primer quality is 25g.
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| CN201310551913.8A CN103541696B (en) | 2013-11-08 | 2013-11-08 | A kind of classification supercharging composite perforator |
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| CN103541696B true CN103541696B (en) | 2016-05-18 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103806880A (en) * | 2014-03-04 | 2014-05-21 | 大庆华翰邦石油装备制造有限公司 | Damped radially-equidistant centering and perforating device |
| CN106223909A (en) * | 2016-08-31 | 2016-12-14 | 中国石油集团川庆钻探工程有限公司 | Coiled tubing clustering perforation intelligent ignition device and process |
| CN106837265B (en) * | 2017-01-17 | 2023-12-29 | 成都众智诚成石油科技有限公司 | New underground casing perforation method |
| CN110513086A (en) * | 2019-09-03 | 2019-11-29 | 黑龙江震泰科技有限公司 | Oil/gas well perforation synergy body |
| CN115450570B (en) * | 2022-08-12 | 2024-08-23 | 东北大学 | Oil gas acquisition system for unconventional oil gas well |
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| CN2541602Y (en) * | 2001-10-26 | 2003-03-26 | 大港油田集团有限责任公司 | Multi-staged combined widowmaker |
| CN201620848U (en) * | 2009-11-27 | 2010-11-03 | 中国兵器工业第二一三研究所 | Vertical well orientation multi-pulse increase-benefit perforating device |
| CN102022101A (en) * | 2010-11-26 | 2011-04-20 | 大庆钻探工程公司测井公司 | Multi-stage perforating pressurizing device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6926096B2 (en) * | 2003-02-18 | 2005-08-09 | Edward Cannoy Kash | Method for using a well perforating gun |
| US8286697B2 (en) * | 2009-05-04 | 2012-10-16 | Baker Hughes Incorporated | Internally supported perforating gun body for high pressure operations |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2541602Y (en) * | 2001-10-26 | 2003-03-26 | 大港油田集团有限责任公司 | Multi-staged combined widowmaker |
| CN201620848U (en) * | 2009-11-27 | 2010-11-03 | 中国兵器工业第二一三研究所 | Vertical well orientation multi-pulse increase-benefit perforating device |
| CN102022101A (en) * | 2010-11-26 | 2011-04-20 | 大庆钻探工程公司测井公司 | Multi-stage perforating pressurizing device |
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Effective date of registration: 20200821 Address after: 163000 south side of Nansi Road, west side of Chuangye Avenue, Tuqiang Park, Honggang Economic Development Zone, Daqing City, Heilongjiang Province Patentee after: Daqing huahanbang Petroleum Technology Co., Ltd Address before: 163412 Heilongjiang province Daqing honggangqu iron industrial demonstration park Hing Road No. 82 Patentee before: DAQING HUAHANBANG PETROLEUM EQUIPMENT MANUFACTURING Co.,Ltd. |