CN101749000A - Energy-concentrated bullet blasting and perforating process - Google Patents
Energy-concentrated bullet blasting and perforating process Download PDFInfo
- Publication number
- CN101749000A CN101749000A CN201010010122A CN201010010122A CN101749000A CN 101749000 A CN101749000 A CN 101749000A CN 201010010122 A CN201010010122 A CN 201010010122A CN 201010010122 A CN201010010122 A CN 201010010122A CN 101749000 A CN101749000 A CN 101749000A
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- bullet
- rifle
- perforating
- perforation
- full aperture
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000005422 blasting Methods 0.000 title claims abstract description 16
- 238000001514 detection method Methods 0.000 claims abstract description 3
- 238000004880 explosion Methods 0.000 claims description 14
- 238000005516 engineering process Methods 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 239000004568 cement Substances 0.000 claims description 4
- 239000013049 sediment Substances 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000005474 detonation Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 18
- 239000012530 fluid Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 210000000664 rectum Anatomy 0.000 description 1
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Abstract
The invention relates to an energy-concentrated bullet blasting and perforating process. A full-bore perforating gun and a positioner arranged under an oil-gas well are transmitted to a destination layer under the oil-gas well by an oil pipe. After the bullet in the full-bore perforating gun is blasted for perforating, a blasting bullet perforating gun is conveyed into the full-bore perforating gun in the oil pipe in the perforating way that a cable passes by the oil pipe. The bullet and a perforated channel are positioned accurately by the detection of the special positioning device under the oil-gas well and a ground instrument. The bullet in the blasting bullet perforating gun is fired, and the bullet to be blasted for the second time is fired in a corresponding perforated channel and is blasted after reaching the tail end of the perforated channel through a bullet blasting delaying device to generate more longer cracks in the stratum to improve the yield of the oil-gas well. The process for perforating through convey by the oil pipe is combined with the process for perforating in the way that the cable passes by the oil pipe and the full-bore perforating gun and the blasting bullet perforating gun are positioned under the guidance of the positioner under the oil-gas well so that the bullet can be blasted for the second time in the perforated channel. The energy-concentrated bullet blasting and perforating process ensures the good effect of increasing the yield of the oil-gas well.
Description
Technical field: the present invention relates to a kind of process that is used for the perforating oil gas well operation, belong to the petroleum perforation technology type.
Background technology: perforating job is oil, gas well exploration, the requisite process links of recovery process, and the technology status of perforating job plays an important role to oil, gas well output and exploitation effect.Yet, the common purpose of perforating job is to penetrate out oil, gas-bearing formation, at present on-the-spot conventional perforating technology only limits to oil gas casing, cement sheath and stratum penetrated wears and forms the perforation tunnel, and can not make the stratum produce more multiple cracking, thereby for improving the near wellbore zone stratum permeability, thereby the effect that improves oil, gas well output is limited.
Summary of the invention: the object of the present invention is to provide a kind of on existing perforation basis, in the same perforation tunnel, thus can be to energy-concentrated bullet blasting and perforating process oily, that area stratum permeability, raising oil, gas well output and recovery ratio are closely advanced in the effective improvement of gas well stratum realization secondary blasting perforation.
Technical scheme of the present invention is as follows: this kind process be with full aperture perforation rifle and down-hole locator with tubing transmission to oil gas well down-hole target zone, utilize the full aperture perforation rifle to detonate behind the perforation, adopt cable perforation through tubing mode that explosion bullet perforating rifle is delivered in the full aperture perforation rifle in oil pipe, finish the accurate location of bullet and perforation tunnel by the detection of special positioner in down-hole and ground instrument, and the explosion bullet perforating rifle that detonates, the secondary blasting bullet is squeezed into the corresponding perforation tunnel of penetrating out, time-delay mechanism by bullet, bullet is ignited after arriving cell ends, produce the above detonation wave of 70Mpa, make the stratum produce more longer cracks, thereby reach the purpose that improves the oil gas well production.The implementation step of this process is as follows:
1, guide head, sediment pipe, full aperture perforation rifle and full aperture perforation rifle orientation spool are connected from bottom to up successively, use the oil pipe G.I.H, deliver to target zone;
2, with the caber mode full aperture perforation rifle is detonated, lined-cavity charge penetrates sleeve pipe and cement sheath forms the taper perforation tunnel in the stratum;
3, cable, bullet rifle body orientation spool, bullet perforating rifle are connected from top to bottom successively, explosion bullet unit is housed on the bullet rifle, by cable it is lowered in the full aperture perforation rifle that has detonated in the oil pipe, full aperture perforation rifle orientation spool and bullet rifle orientation spool are finished accurate location in the full aperture perforation rifle;
4, the emission explosion bullet unit that detonates, the explosion bullet detonates after arriving cell ends along the perforation tunnel that the full aperture perforation rifle has been penetrated out, makes the stratum produce a plurality of cracks;
5, trip out bullet rifle body and full aperture perforation rifle one by one, technology is finished.
The present invention combines oil tube transmission perforation technology with the cable through-tubing perforating technology, under the guiding of down-hole locator, finish the location of full aperture perforation rifle and explosion bullet perforating rifle, realize the secondary blasting in the perforation tunnel, effect of increasing production is good, is suitable for and applies.
Description of drawings: accompanying drawing is process provided by the invention and downhole hardware structural representation.
The specific embodiment: enforcement of the present invention is described further below in conjunction with accompanying drawing.
Can show that as figure down-hole string that adopts when implementing process of the present invention and device are made up of cable 1, oil pipe 2, full aperture perforation rifle 3, bullet rifle body orientation spool 4, full aperture perforation rifle orientation spool 5, bullet perforating rifle 6, explosion bullet unit 7, sediment pipe 8, guide head 9.Number in the figure " 10 ", " 11 " are respectively oil, gas well sleeve pipe and cement sheath, and label " 12 " " 13 " is respectively the trajectory that forms behind oil reservoir and the jet perforating.Wherein, full aperture perforation rifle 3 is φ 102 rifle types, and adopting perforating bullet bullet type is φ T127 type, its maximum outside diameter φ 114mm, minimum latus rectum 〉=φ 75mm, all-pass footpath 100%, the average piercing aperture φ of sleeve pipe 19.6mm, close 10 holes, hole/m.Bullet perforating rifle 6 maximum outside diameter φ 70mm, rifle type φ 70 rifles, close 10 holes, hole/m, location rate 100%, radiation pattern is the fuse arming test experiment initiation emission.Bullet rifle body orientation spool 4 is a pin thread, and full aperture perforation rifle orientation spool 5 is a box, the two butt joint.Explosion bullet unit 7 is a lined-cavity charge, is provided with to prolong apparatus to cause bursting when penetrating bullet moment detonation pressure 〉=70Mpa in it.
Embodiment: certain one heavy oil wells initial stage of oil field hole after 3 days the feed flow difference do not go out.Adopt process of the present invention perforation again, perforation thickness 1.5m/2 layer, close 10 holes, hole/m, the following pump initial stage production fluid 47m that drives a well
3/ d, production fluid 50m at present
3/ d, produce oil 10.5t/d, it is respond well to implement the present invention.
Claims (3)
1. energy-concentrated bullet blasting and perforating process, it is characterized in that, this process be with full aperture perforation rifle and down-hole locator with tubing transmission to oil gas well down-hole target zone, utilize the full aperture perforation rifle to detonate behind the perforation, adopt cable perforation through tubing mode that explosion bullet perforating rifle is delivered in the full aperture perforation rifle in oil pipe, finish the accurate location of bullet and perforation tunnel by the detection of special positioner in down-hole and ground instrument, and the explosion bullet perforating rifle that detonates, the secondary blasting bullet is squeezed into the corresponding perforation tunnel of penetrating out, time-delay mechanism by bullet, bullet is ignited after arriving cell ends, produce the above detonation wave of 70Mpa, make the stratum produce more longer cracks, thereby reach the purpose that improves the oil gas well production.
2. a kind of energy-concentrated bullet blasting and perforating process according to claim 1, this implementation of processes step is as follows:
(1), guide head, sediment pipe, full aperture perforation rifle and full aperture perforation rifle orientation spool are connected from bottom to up successively, use the oil pipe G.I.H, deliver to target zone;
(2), the full aperture perforation rifle is detonated, lined-cavity charge penetrates sleeve pipe and cement sheath forms the taper perforation tunnel in the stratum with the caber mode;
(3), cable, bullet rifle body orientation spool, bullet perforating rifle are connected from top to bottom successively, explosion bullet unit is housed on the bullet rifle, by cable it is lowered in the full aperture perforation rifle that has detonated in the oil pipe, full aperture perforation rifle orientation spool and bullet rifle orientation spool are finished accurate location in the full aperture perforation rifle;
(4), the emission explosion bullet unit that detonates, the explosion bullet detonates after arriving cell ends along the perforation tunnel that the full aperture perforation rifle has been penetrated out, makes the stratum produce a plurality of cracks;
(5), one by one trip out bullet rifle body and full aperture perforation rifle, technology is finished.
3. a kind of energy-concentrated bullet blasting and perforating process according to claim 1, down-hole string that this process adopts and device are made up of cable (1), oil pipe (2), full aperture perforation rifle (3), bullet rifle body orientation spool (4), full aperture perforation rifle orientation spool (5), bullet perforating rifle (6), explosion bullet unit (7), sediment pipe (8), guide head (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010010122A CN101749000B (en) | 2010-01-18 | 2010-01-18 | Energy-concentrated bullet blasting and perforating process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010010122A CN101749000B (en) | 2010-01-18 | 2010-01-18 | Energy-concentrated bullet blasting and perforating process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101749000A true CN101749000A (en) | 2010-06-23 |
| CN101749000B CN101749000B (en) | 2012-10-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010010122A Expired - Fee Related CN101749000B (en) | 2010-01-18 | 2010-01-18 | Energy-concentrated bullet blasting and perforating process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101749000B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425400A (en) * | 2011-11-09 | 2012-04-25 | 中国石油集团川庆钻探工程有限公司 | Fracturing process for realizing multi-layer pressure selection without moving pipe column |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2386194Y (en) * | 1999-08-27 | 2000-07-05 | 西安通源石油科技产业有限责任公司 | All-path compound perforation device for oil gas well |
| CN2459440Y (en) * | 2000-11-03 | 2001-11-14 | 四川石油管理局测井公司 | All through diameter perforating gun assembly for oil gas well |
| CN2555393Y (en) * | 2002-08-14 | 2003-06-11 | 大庆油田有限责任公司 | Integrally conbined hole shooter |
| CN2779059Y (en) * | 2005-03-04 | 2006-05-10 | 张宣来 | Energy gathered bullet composite blast perforation apparatus |
| CN2841953Y (en) * | 2005-05-24 | 2006-11-29 | 大庆油田有限责任公司 | Negative pressure perforating lower pump linkage oil pumping unit detonating tubular column |
| CN2924005Y (en) * | 2005-08-25 | 2007-07-18 | 中国石油天然气集团公司 | Perforating, detecting, acidating and liquid-discharging integrated testing pipe string |
| CN101429863A (en) * | 2008-12-15 | 2009-05-13 | 中国石油集团长城钻探工程有限公司 | Oil-gas-water well energy-gathering composite perforation process method |
-
2010
- 2010-01-18 CN CN201010010122A patent/CN101749000B/en not_active Expired - Fee Related
Non-Patent Citations (2)
| Title |
|---|
| 倪德忠: "油气井射孔层位的深度定位方法", 《海洋石油》 * |
| 闫永宏: "全通径射孔枪的研制和应用", 《石油机械》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425400A (en) * | 2011-11-09 | 2012-04-25 | 中国石油集团川庆钻探工程有限公司 | Fracturing process for realizing multi-layer pressure selection without moving pipe column |
| CN102425400B (en) * | 2011-11-09 | 2015-01-07 | 中国石油集团川庆钻探工程有限公司 | Fracturing process for realizing multi-layer pressure selection without moving pipe column |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101749000B (en) | 2012-10-03 |
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