CN201568038U - Composite fracturing and perforating device for oil and gas well - Google Patents
Composite fracturing and perforating device for oil and gas well Download PDFInfo
- Publication number
- CN201568038U CN201568038U CN2009203145628U CN200920314562U CN201568038U CN 201568038 U CN201568038 U CN 201568038U CN 2009203145628 U CN2009203145628 U CN 2009203145628U CN 200920314562 U CN200920314562 U CN 200920314562U CN 201568038 U CN201568038 U CN 201568038U
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- perforating
- medicine box
- cylindrical shape
- composite fracturing
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Abstract
The utility model relates to a composite fracturing and perforating device for an oil and gas well, which can carry out deep fracturing on the stratum when perforating. The composite fracturing and perforating device utilizes primary powder in a perforating bullet explosion ignition perforator and secondary powder in a primary powder combustion ignition perforator of a composite fracturing perforator and the time difference between pressure peaks of the primary powder and secondary powder is between 5 and 10 milliseconds so as to form energy complementation, form continuous high-pressure state in the pore channel and prolong the length of the crack. A perforating gun body in the composite fracturing and perforating device is provided with a pressure releasing hole over against the perforating direction of perforating bullets. The pressure releasing hole is provided with a sealing blocking piece. A cylindrical gun carrier is provided with an inner powder box and an outer powder box, wherein the inner powder box filled with the primary powder is arranged in the cylindrical gun carrier and is positioned between the adjacent energy-concentrated perforating bullets; and the outer powder box filled with the secondary powder is adhered to the outer wall of the cylindrical gun carrier.
Description
Technical field
The utility model belongs to oil exploration and development fields, is a kind of composite fracturing perforating system that can carry out degree of depth fracturing reform in perforation to the stratum.
Background technology
In oil gas well exploration and development field, perforation is the key link in the completion engineering, and the degree of perfection of perforation has determined oil gas well capacity and life-span.Current perforating oil gas well generally adopts jet perforating, because simple jet perforating can form certain thickness compaction band at the duct wall, the consequence that this compaction band brought is that permeability significantly reduces, and has a strong impact on oil gas well capacity and life-span.For this reason, people have developed compound technique of perforating in constantly exploring.Composite gun perforation is with jet perforating and gunpowder combination, and the gas that utilizes the gunpowder detonation to produce when finishing perforation acts on the stratum, is used to remove blocking pollution, abolishes the compaction band in the perforation tunnel, reaches the purpose of increasing yield and injection.At present, the integral type composite gun perforation of powder charge in the rifle is because it has construction simply, and is safe and reliable, little to the pit shaft damage, obtained extensive use in the oil field.But because the integral type composite gun perforation adopts powder charge form between bullet mostly, particularly the powder charge amount significantly reduces under the close condition with higher in hole, makes action effect become very poor.
Summary of the invention
Problem to be solved in the utility model is: provides a kind of and can effectively improve capacity usage ratio, improves perforation and wear deeply, prolong the crack, and then the oil gas well composite fracturing perforating system of raising fracturing effect.
The technical scheme that addresses the above problem is: the oil gas well composite fracturing perforating system that is provided is connected and composed by a joint perforator or more piece perforator, described perforator has a perforating gun, be provided with the cylinder type firing mount in this perforating gun, on this cylindrical shape firing mount, a plurality of lined-cavity charges be housed; Special feature of the present utility model is: on the body of a gun of perforating bullet jet direction relief hole is being set, the sealing jam is housed on the relief hole, in on the cylindrical shape firing mount, installing medicine box with outside medicine box, wherein interior medicine box is contained in the cylindrical shape firing mount, and between adjacent lined-cavity charge, dress one-level gunpowder in the interior medicine box, outer medicine box is adorned the secondary gunpowder attached to cylinder type firing mount outer wall in the outer medicine box.
Utilize above-mentioned one-level gunpowder and the charging means of secondary gunpowder in rifle can realize the increase of explosive payload, and reach the prolongation pressure purpose of action time.
Above-mentioned sealing jam can be a fragile material sealing jam, such as powder metallurgy sealing jam or alumina zirconia ceramic seal jam.
Above-mentioned relief hole is stepped hole preferably, and the small end of this stepped hole is positioned at the inwall of cylindrical shape firing mount, and the sealing jam is contained on the step of this stepped hole.The purpose of doing like this is to improve the height of burst of perforating bullet, and the height of burst put forward the dark effect of wearing of enough increase perforating bullets.
During perforation, the detonating fuse perforating bullet that ignites, the one-level gunpowder in the product after the perforating bullet blast is at first lighted in the medicine box, and then light the secondary gunpowder in the medicine box outside the perforating bullet both sides, the firing mount outside.Because there is the time difference in the pressure peak of one-level gunpowder and secondary gunpowder, thereby has formed the complementation of energy, the duration that forms effective pressure in the duct is longer, has fully improved energy utilization ratio, has prolonged the length in crack.
The utility model is contained in the firsts and seconds gunpowder respectively in the medicine box, has not only simplified assembly technology, be convenient to packing and transportation, and improved safety, and this form of structure also is convenient to scale and standardized production.The utility model is being provided with relief hole on the body of a gun of perforating bullet jet direction, the detonation gas that is produced need not the vertical and radial motion by mineshaft annulus, but directly is discharged into the perforation tunnel by relief hole, thereby has reduced the energy loss of detonation gas.The utility model is applicable to field operation technologies such as cable, drilling rod or oil pipe conveying.
Description of drawings
Fig. 1 is overall structure figure of the present utility model.
Fig. 2 is relief hole and the jam partial view partly on Fig. 1 hollow carrier.
Fig. 3 is the sectional view of the outer medicine box in Fig. 1 firing mount outside.
Fig. 4 is the stereogram of the outer medicine box in Fig. 1 firing mount outside.
The specific embodiment
Below in conjunction with accompanying drawing content of the present utility model is described in detail.
As shown in Figure 1: the left end of hollow carrier 1 is a joint 2, and right-hand member is a tail stifled 3.A plurality of perforating bullets 5 are housed on the cylindrical shape firing mount 4, and each perforating bullet is arranged according to the square screw shape of setting.Interior medicine box 6 is contained in the inside of cylindrical shape firing mount 4, and an interior medicine box 6 is installed between per two adjacent perforating bullets; Outer medicine box 7 is contained in the outside of cylindrical shape firing mount 4.
Referring to Fig. 2, the position over against the perforating bullet bullet on the body of a gun 1 is provided with relief hole 8, and jam 9 is housed in the relief hole 8.Relief hole 8 is designed to step-shaped hole, and jam 9 is contained on the step of relief hole.Jam 9 adopts existing alumina zirconia toughening ceramic, and wherein alumina accounts for 95%, and zirconia accounts for 3%.Also can select powdered metallurgical material for use, such as iron-base powder metallurgy material.Jam is can be fully under the perforating bullet detonation broken, has not only eliminated the pollution of original steel jam to pit shaft, and has avoided steel jam in the past to fall bridging behind perforation and the card rifle accident that may cause.
As shown in Figure 3, Figure 4.For the ease of installing, the best mode of above-mentioned outer medicine box 7 is: two outer medicine boxs 7 are connected as a single entity, constitute outer medicine box assembly, should have a cylindrical shape medicine box rack 71 by outer medicine box assembly, the cylindrical shape medicine box rack is provided with 72, two outer medicine boxs in hole of settling perforating bullet and is positioned at the both sides of settling the hole 72 of perforating bullet on the cylindrical shape medicine box rack.Only the outside that outer medicine box assembly is enclosed within firing mount one by one need be got final product during installation, so installation is very simple, and also very safe.The one-level gunpowder is housed in the interior medicine box, the secondary gunpowder is housed in the outer medicine box.This incorporate medicine box can rationally assemble with firing mount, perforating bullet and detonating fuse easily, also is applicable to simultaneously the personalized designs of the close and phase place of variable orifice.Above-mentioned one-level gunpowder is that 75% ammonium perchlorate and 25% end hydroxy butadiene are formed by weight proportion mainly, adds an amount of additive (curing compound, plasticizing agent, delayer and stabilizing agent) again; The secondary gunpowder is that 80% ammonium perchlorate and 20% polyethers are formed by weight proportion mainly, adds an amount of additive again, and the time difference of one-level gunpowder and secondary gunpowder pressure peak is 5～10 milliseconds.
Referring to Fig. 3, can replace part secondary gunpowder 74 with propping sand 73 in the medicine box 7 outside, when the crack presses off, propping sand is brought in the crack by gases at high pressure, can play the supporting role to the crack, stops closing up of cracks, further improve the oil gas flow conductivity, reach the purpose of volume increase.According to the difference of perforation scheme, can top dress propping sand 73 in the outer medicine box, bottom dress secondary gunpowder 74; Perhaps a side is adorned propping sand, opposite side dress secondary gunpowder; Also the outer medicine box of part can be adorned propping sand entirely.
The cell material of inside and outside medicine box adopts combustible material, can completing combustion in the powder burning process, and no residue; The medicine box box body can also effectively be kept out perforating bullet explosion wave and high temperature to the direct effect of gunpowder and the explosive reaction that causes makes gunpowder be in a kind of conflagration state all the time.
Claims (6)
1. oil gas well composite fracturing perforating system, connect and compose by a joint perforator or more piece perforator, described perforator has a perforating gun, be provided with cylinder type firing mount (4) in this perforating gun, on this cylindrical shape firing mount (4), a plurality of lined-cavity charges (5) are housed, it is characterized in that: relief hole (8) is being set on the body of a gun of perforating bullet jet direction, sealing jam (9) is housed on the relief hole, in on the cylindrical shape firing mount, installing medicine box (6) and outside medicine box (7), wherein interior medicine box is contained in the cylindrical shape firing mount, and between adjacent lined-cavity charge, dress one-level gunpowder in the interior medicine box (6), outer medicine box (7) is adorned the secondary gunpowder attached to cylinder type firing mount outer wall in the outer medicine box (7).
2. composite fracturing perforating system according to claim 1, it is characterized in that sealing jam (9) is fragile material sealing jam.
3. composite fracturing perforating system according to claim 1 and 2 is characterized in that relief hole (8) is a stepped hole, and the small end of this stepped hole is positioned at the inwall of cylindrical shape firing mount, and sealing jam (9) is contained on the step of this stepped hole.
4. composite fracturing perforating system according to claim 3, it is characterized in that two outer medicine boxs (7) are connected as a single entity, constitute outer medicine box assembly, should have a cylindrical shape medicine box rack (71) by outer medicine box assembly, the cylindrical shape medicine box rack is provided with the hole (72) of settling perforating bullet, and two outer medicine boxs are positioned at the both sides of settling the hole (72) of perforating bullet on the cylindrical shape medicine box rack.
5. composite fracturing perforating system according to claim 4 is characterized in that replacing part secondary gunpowder with propping sand in the medicine box outside.
6. composite fracturing perforating system according to claim 5 is characterized in that outer medicine box internal upper part dress propping sand, bottom dress secondary gunpowder; Perhaps a side is adorned propping sand, opposite side dress secondary gunpowder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203145628U CN201568038U (en) | 2009-11-11 | 2009-11-11 | Composite fracturing and perforating device for oil and gas well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203145628U CN201568038U (en) | 2009-11-11 | 2009-11-11 | Composite fracturing and perforating device for oil and gas well |
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| Publication Number | Publication Date |
|---|---|
| CN201568038U true CN201568038U (en) | 2010-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009203145628U Expired - Lifetime CN201568038U (en) | 2009-11-11 | 2009-11-11 | Composite fracturing and perforating device for oil and gas well |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011057564A1 (en) * | 2009-11-11 | 2011-05-19 | 西安通源石油科技股份有限公司 | Combined fracturing and perforating method and device for oil and gas well |
| CN102410006A (en) * | 2011-12-15 | 2012-04-11 | 西安通源石油科技股份有限公司 | Explosive loading structure for multi-stage composite perforating device |
| CN102536177A (en) * | 2012-03-21 | 2012-07-04 | 甘肃兰金民用爆炸高新技术公司 | Positive-pressure blasting device |
| WO2012088984A1 (en) * | 2010-12-29 | 2012-07-05 | 西安通源石油科技股份有限公司 | Powder charging structure of composite fracturing perforation device |
| CN102839957A (en) * | 2012-09-06 | 2012-12-26 | 北方斯伦贝谢油田技术（西安）有限公司 | Pulse detonation fracturing device for ultra high-temperature high-pressure well |
| CN106639992A (en) * | 2017-03-10 | 2017-05-10 | 西安通源石油科技股份有限公司 | Special perforating gun for fracturing, special FracGun composite perforating device and method for fracturing |
| CN111305802A (en) * | 2018-12-12 | 2020-06-19 | 中国石油化工股份有限公司 | Pulse wave fracturing device and method |
-
2009
- 2009-11-11 CN CN2009203145628U patent/CN201568038U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011057564A1 (en) * | 2009-11-11 | 2011-05-19 | 西安通源石油科技股份有限公司 | Combined fracturing and perforating method and device for oil and gas well |
| WO2012088984A1 (en) * | 2010-12-29 | 2012-07-05 | 西安通源石油科技股份有限公司 | Powder charging structure of composite fracturing perforation device |
| CN102410006A (en) * | 2011-12-15 | 2012-04-11 | 西安通源石油科技股份有限公司 | Explosive loading structure for multi-stage composite perforating device |
| CN102410006B (en) * | 2011-12-15 | 2014-05-07 | 西安通源石油科技股份有限公司 | Explosive loading structure for multi-stage composite perforating device |
| CN102536177A (en) * | 2012-03-21 | 2012-07-04 | 甘肃兰金民用爆炸高新技术公司 | Positive-pressure blasting device |
| CN102536177B (en) * | 2012-03-21 | 2013-11-13 | 甘肃兰金民用爆炸高新技术公司 | Positive-pressure blasting device |
| CN102839957A (en) * | 2012-09-06 | 2012-12-26 | 北方斯伦贝谢油田技术（西安）有限公司 | Pulse detonation fracturing device for ultra high-temperature high-pressure well |
| CN102839957B (en) * | 2012-09-06 | 2015-03-25 | 北方斯伦贝谢油田技术（西安）有限公司 | Pulse detonation fracturing device for ultra high-temperature high-pressure well |
| CN106639992A (en) * | 2017-03-10 | 2017-05-10 | 西安通源石油科技股份有限公司 | Special perforating gun for fracturing, special FracGun composite perforating device and method for fracturing |
| CN111305802A (en) * | 2018-12-12 | 2020-06-19 | 中国石油化工股份有限公司 | Pulse wave fracturing device and method |
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Granted publication date: 20100901 |