CN1584288A - Gas-oil layer liquid gunpowder fracturing method and apparatus thereof - Google Patents
Gas-oil layer liquid gunpowder fracturing method and apparatus thereof Download PDFInfo
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- CN1584288A CN1584288A CN 200410026187 CN200410026187A CN1584288A CN 1584288 A CN1584288 A CN 1584288A CN 200410026187 CN200410026187 CN 200410026187 CN 200410026187 A CN200410026187 A CN 200410026187A CN 1584288 A CN1584288 A CN 1584288A
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Abstract
The present invention relates to a hydrocarbon reservoir liquid powder fracturing method and its equipment. Said method includes the following steps: filling sand into wellbore or pumping oiliness spacer fluid whose density is greater than that of liquid powder into hydrocarbon reservoir bottom portion to build artificial well bottom; using tubing string to place the fire lighter into the hydrocarbon reservoir interval in the wellbore; filling up well bore with clear water, pumping spacer fluid by using cementing truck, pumping liquid powder, more pumping tubing spacer fluid and finally pumping clearwater to drive liquid powder and make it fed into the hydrocarbon reservoir interval; upwards drawing tubing string to made the five lighter positioned in the liquid powder; opening wellbore, the rowing the drop bar into the tubing string to impact the fire lighter, lighting liquid powder to produce deflagration, and produce high-energy high-pressure gas, said gas can fracture the hydrocarbon reservoir interval.
Description
Technical field
The invention belongs to producing oil, gas, water, solubilized maybe can be dissolved material from deep-well method or equipment technical field, be specifically related to by forming the method that crack or crack promote output.
Background technology
At present, the high energy material that high enegry gas fracturing adopted that carry out in the oil field mostly is solid gunpowder or solid composite propellant, and detonation after solid gunpowder or solid composite propellant are ignited produces high temperature and high pressure gas, with the oil-gas Layer pressure break.Solid gunpowder, solid composite propellant burning velocity are fast, surge pressure increases soon, and burning time is short, do not reach fracturing effect preferably.
Solid gunpowder in the above-mentioned process for fracturing energetic gas or solid composite propellant explosive payload seldom, only tens kilograms, the length of institute's pressure-break and width and the degree of depth are all very limited behind the oil reservoir perforation, have influence on the output of producing oil, gas.
The patent No. is 97121792.0, denomination of invention is the Chinese invention patent of " gas pressure-cracking method ", disclose and the steps include: oil pipe or drilling rod are lowered to oil gas bottom or oil-gas Layer position, solid or liquid gun propellant are sent into, again the gunpowder section is proposed for oil pipe or drilling rod, with igniter, ignition charge, batching pig, pressurization is squeezed into the gunpowder section with well liquid, igniter is connected the power supply igniting and is ignited in the time of setting, or adopting ignition charge to contact with gunpowder, gunpowder is ignited in ammonium molecule in the gunpowder and the nitro compound generation exothermic reaction in the ignition charge.Used fuel is solid or liquid gun propellant in this patent, if adopt liquid gun propellant, the problem that this method exists is: the liquid gun propellant section that with well killing fluid ignition charge is pushed oil-gas Layer in the oil pipe, because ignition charge density is greater than liquid gun propellant, can not accurately stay in the liquid gun propellant section of oil-gas Layer, may fall into the shaft bottom, liquid gun propellant can not ignite; If adopt timing ignition, owing to may be subjected to the influence of some uncertain factors in the construction, equally can't be, stay in the liquid gun propellant section of oil-gas Layer exactly in correct time, and may bring hidden danger, so generally avoid in the wellfracturing using; If adopt ignition charge to contact with gunpowder, ammonium molecule in the gunpowder and the nitro compound generation exothermic reaction in the ignition charge, temperature is greater than 80 ℃, the method that gunpowder is ignited, because it is on-the-spot for construction safety, general requirements gunpowder autoignition temperature can't not seen the successful example report with the combustion of liquid snack made with traditional Chinese medicines for 80 ℃ at present as yet greater than 120 ℃ yet; Batching pig in this patent is arranged on the lower end of oil pipe, liquid gun propellant in the pit shaft and well killing fluid can not be isolated, and liquid gun propellant is easy to be diluted by well killing fluid, and the liquid gun propellant after the dilution can't be ignited.In sum, this patent can't be implemented in the liquid gun propellant pressure break.
Summary of the invention
A technical problem underlying to be solved by this invention is to overcome the shortcoming of above-mentioned solid gunpowder or solid composite propellant process for fracturing energetic gas and above-mentioned patent, provides a kind of and fires that speed is low, safe, explosive payload is big, fracturing effect good, can carry out the oil-gas Layer liquid gun propellant fracturing process of assembly manipulation at the scene.
Another technical problem underlying to be solved by this invention is to provide a kind of safe and reliable, the oil-gas Layer liquid gun propellant fracturing device that assembles at the scene.
Solving the problems of the technologies described above the technical scheme that is adopted is that it comprises the steps:
(1) in pit shaft with back-up sand or pump into density and construct the artificial bottom of a well in the oil-gas Layer bottom greater than the oiliness insulating liquid of liquid gun propellant.
(2) with tubing string igniter is delivered to oil gas interval in the pit shaft.
(3) fill pit shaft with clear water, pump into insulating liquid with cementing truck, the pumping liquid gunpowder pumps into the oil pipe insulating liquid more then, pumps into clear water promotion liquid gun propellant at last and enters the oil gas interval.
(4) carry tubing string on, make igniter be arranged in liquid gun propellant.
(5) opening wellbore will be clashed into rod and be dropped into tubing string inner impact igniter, light the liquid gun propellant detonation, and the high energy gases at high pressure that produced are with oil gas interval pressure break.
The weight of liquid gun propellant of the present invention is 500～1500kg, is to be made by the raw material and the proportioning thereof of following weight parts:
55～69 parts in ammonium nitrate or sodium nitrate or potassium nitrate
5～21 parts of glycerine or urea or diethylene glycols
15～35 parts in water
The weight of insulating liquid of the present invention is 200～500kg, and the weight of oil pipe insulating liquid is 50～200kg, and insulating liquid and oil pipe insulating liquid are to be made by the raw material and the proportioning thereof of following parts by volume:
0～100 part in carbon tetrachloride
100 parts of diesel oil
Preferred weight part proportioning of each raw material of liquid gun propellant of the present invention is:
60～64 parts in ammonium nitrate or sodium nitrate or potassium nitrate
10～16 parts of glycerine or urea or diethylene glycols
20～30 parts in water
Preferred volume part proportioning of insulating liquid of the present invention and each raw material of oil pipe insulating liquid is:
25～75 parts in carbon tetrachloride
100 parts of diesel oil
Optimum weight part proportioning of each raw material of liquid gun propellant of the present invention is:
62 parts in ammonium nitrate or sodium nitrate or potassium nitrate
13 parts of glycerine or urea or diethylene glycols
25 parts in water
Optimal volume part proportioning of insulating liquid of the present invention and each raw material of oil pipe insulating liquid is:
50 parts in carbon tetrachloride
100 parts of diesel oil
The device that oil-gas Layer liquid gun propellant fracturing process of the present invention is adopted is: oil gas interval artificial bottom of a well is provided with liquid gun propellant in the pit shaft, the upper surface of liquid gun propellant is provided with insulating liquid in pit shaft, the upper surface of insulating liquid to well head is provided with clear water in pit shaft, in pit shaft, be provided with lower end and the tubing string that connects with igniter that is positioned at liquid gun propellant, igniter is provided with oil pipe insulating liquid and clear water in the tubing string, is provided with the bump rod on the ground.
Insulating liquid of the present invention and oil pipe insulating liquid are the liquid insulating liquids of commaterial.
Oil-gas Layer liquid gun propellant fracturing process of the present invention is compared with " gas pressure-cracking method ", liquor charging body gunpowder and igniter are once finished, method is simple, safe and reliable, fracturing effect is good, on the oil field, promote the use of, oil-gas Layer liquid gun propellant fracturing device of the present invention is compared with the solid high-energy fuel fracturing device that uses on the oil field at present, used high-energy fuel is liquid gun propellant, the burning velocity of liquid gun propellant is lower, can carry out sustained combustion, explosive payload is big, can carry out site assembly, improve the safety in transportation and the assembling process, have safe and reliable, explosive payload is big, advantages such as fracturing effect is good.Oil-gas Layer liquid gun propellant fracturing process of the present invention and device thereof can extensively be promoted the use of in the oil field.
Description of drawings
Fig. 1 is the structural representation of an embodiment of oil-gas Layer liquid gun propellant fracturing device.
The specific embodiment
The present invention is described in more detail below in conjunction with drawings and Examples, but the invention is not restricted to these embodiment.
Embodiment 1
With oil layer section well depth 1452m is that the oil-gas Layer liquid gun propellant fracturing process that example was adopted is as follows:
1, in pit shaft 10, constructs artificial bottom of a well 9 in the oil-gas Layer bottom with back-up sand.Also can pump into density and be prepared into artificial bottom of a well 9 greater than the oiliness insulating liquid of liquid gun propellant 8.
2, be connected into igniter on ground with stick 7, initiator 6, screen casing 5 order from bottom to top, the upper end of screen casing 5 connects with the lower end of next fuel-economizing tubing string 2, with tubing string 2 igniter is delivered to oil gas interval in the pit shaft 10.
3, with water pump clear water 3 is filled pit shaft 10, in tubing string 2, pumps into the 300kg insulating liquid of making by the material and the proportioning thereof of following parts by volume 4 then with cementing truck:
50 parts in carbon tetrachloride
100 parts of diesel oil
Then pump into the 1000kg liquid gun propellant of making by following proportioning 8:
62 parts in ammonium nitrate
13 parts of glycerine
25 parts in water
Pump into 100kg oil pipe insulating liquid 11 again, the proportioning of oil pipe insulating liquid 11 is identical with the proportioning of insulating liquid 4, in pit shaft 10, pump into the oil pipe insulating liquid 11 that pumps into after insulating liquid 4 and the pumping liquid gunpowder 8 before the pumping liquid gunpowder 8 and be used for preventing that liquid gun propellant 8 from mixing with the water of well liquid, diluent liquid gunpowder 8 influences the fracturing effect of oil-gas Layer.Pump into 4270kg clear water 3 at last, clear water 3 promotes liquid gun propellant 8 and enters the oil gas interval and produce the kill-job effect.
4, carry tubing string 2 on, make igniter be arranged in liquid gun propellant 8.
5, opening wellbore 10, throw excellent 1 percussion primer 6 of bump, and initiator 6 powder column 7 of will lighting a fire is lighted, and makes liquid gun propellant 8 detonations, and the high energy gases at high pressure that produced are with oil gas interval pressure break.
In Fig. 1, the oil-gas Layer liquid gun propellant fracturing device of present embodiment is made of bump rod 1, tubing string 2, clear water 3, insulating liquid 4, screen casing 5, initiator 6, igniting powder column 7, liquid gun propellant 8, artificial bottom of a well 9, pit shaft 10, oil pipe insulating liquid 11, and wherein screen casing 5, initiator 6, igniting powder column 7 are connected into igniter.
On the oil gas interval artificial bottom of a well 9 liquid gun propellant 8 is housed in pit shaft 10, liquid gun propellant 8 is used to burn back generation high temperature and high pressure gas with oil gas interval pressure break, realizes exploitation oil gas purpose.The present invention's liquid gun propellant 8 more than 1 ton of in the pit shaft 10 of oil gas interval, can packing into, be tens times of solid high energy gas fracturing device explosive payloads, the high energy gases at high pressure that produced after liquid gun propellant 8 detonations are tens times of solid high energy gas fracturing device, improve the fracturing effect of oil gas interval greatly, increased the output of oil and natural gas.The upper surface of liquid gun propellant 8 is packaged with insulating liquid 4 in pit shaft 10, the function of the insulating liquid 4 of present embodiment is used to prevent that liquid gun propellant 8 and the pit shaft 10 interior water in the pit shaft 10 from mixing, diluent liquid gunpowder 8, the function of insulating liquid 4 and clear water 3 is to be used for sealing, make liquid gun propellant 8 in airtight container, produce detonation, pressure break oil gas interval.Tubing string 2 is installed in pit shaft 10, following the correcting of a bottom tubing string 2 is positioned at the oil gas interval, promptly the lower end of a bottom tubing string 2 is positioned at liquid gun propellant 8, there is screen casing 5 lower end of a bottom tubing string 2 by thread connection, be processed with through hole on screen casing 5 walls, screen casing 5 lower ends are equipped with initiator 6, the lower end of initiator 6 is equipped with igniting powder column 7, screen casing 5 and initiator 6 and igniting powder column 7 are connected into the igniter of present embodiment, igniter is positioned at liquid gun propellant 8, is packaged with oil pipe insulating liquid 11 in tubing string 2 on the igniter.Be placed with bump rod 1 on ground, bump rod 1 can be with manually operating, and bump rod 1 is used for initiator 6 is ignited.When bump rod 1 by manually operating when in tubing string 2, falling, clash into excellent 1 percussion primer 6, initiator 6 powder column 7 of will lighting a fire is lighted, and makes liquid gun propellant 8 detonations, the high energy gases at high pressure that produced are with oil gas interval pressure break.
Embodiment 2
With oil layer section well depth 1000m is that the oil-gas Layer liquid gun propellant fracturing process that example was adopted is as follows:
Pump into the 200kg insulating liquid of making by the material and the proportioning thereof of following parts by volume 4 with cementing truck in 3 steps of present embodiment oil-gas Layer liquid gun propellant fracturing process:
0 part in carbon tetrachloride
100 parts of diesel oil
Then pump into the 500kg liquid gun propellant of making by following proportioning 8:
55 parts in ammonium nitrate
5 parts of glycerine
15 parts in water
Pump into 50kg oil pipe insulating liquid 11 again, the proportioning of oil pipe insulating liquid 11 is identical with the proportioning of insulating liquid 4, pumps into 2940kg clear water 3 at last, and clear water 3 promotes liquid gun propellant 8 and enters the oil gas interval.Other processing step of present embodiment oil-gas Layer LIQUID PROPELLANT HIGH ENERGY GAS FRACTURING method is identical with embodiment 1.Oil-gas Layer liquid gun propellant fracturing device with
Embodiment 1 is identical.
Embodiment 3
With oil layer section well depth 5000m is that the oil-gas Layer liquid gun propellant fracturing process that example was adopted is as follows:
Pump into the 500kg insulating liquid of making by the material and the proportioning thereof of following parts by volume 4 with cementing truck in 3 steps of present embodiment oil-gas Layer liquid gun propellant fracturing process:
100 parts in carbon tetrachloride
100 parts of diesel oil
Then pump into the 1500kg liquid gun propellant of making by following proportioning 8:
69 parts in ammonium nitrate
21 parts of glycerine
35 parts in water
Pump into 200kg oil pipe insulating liquid 11 again, the proportioning of oil pipe insulating liquid 11 is identical with the proportioning of insulating liquid 4, pumps into 14700kg clear water 3 at last, and clear water 3 promotes liquid gun propellant 8 and enters the oil gas interval.Other processing step of present embodiment oil-gas Layer LIQUID PROPELLANT HIGH ENERGY GAS FRACTURING method is identical with embodiment 1.Oil-gas Layer liquid gun propellant fracturing device is identical with embodiment 1.
Embodiment 4
In above embodiment 1～3, the ammonium nitrate in liquid gun propellant 8 proportionings replaces with sodium nitrate, and consumption is identical with respective embodiments.Other processing step of present embodiment oil-gas Layer LIQUID PROPELLANT HIGH ENERGY GAS FRACTURING method is identical with respective embodiments.Oil-gas Layer liquid gun propellant fracturing device is identical with embodiment 1.
Embodiment 5
In above embodiment 1～3, the ammonium nitrate in liquid gun propellant 8 proportionings replaces with potassium nitrate, and consumption is identical with respective embodiments.Other processing step of present embodiment oil-gas Layer LIQUID PROPELLANT HIGH ENERGY GAS FRACTURING method is identical with respective embodiments.Oil-gas Layer liquid gun propellant fracturing device is identical with embodiment 1.
Embodiment 6
In above embodiment 1～5, the glycerine in liquid gun propellant 8 proportionings replaces with urea, and consumption is identical with respective embodiments.Other processing step of present embodiment oil-gas Layer LIQUID PROPELLANT HIGH ENERGY GAS FRACTURING method is identical with respective embodiments.Oil-gas Layer liquid gun propellant fracturing device is identical with embodiment 1.
Embodiment 7
In above embodiment 1～5, the glycerine in liquid gun propellant 8 proportionings replaces with diethylene glycol, and consumption is identical with respective embodiments.Other processing step of present embodiment oil-gas Layer LIQUID PROPELLANT HIGH ENERGY GAS FRACTURING method is identical with respective embodiments.Oil-gas Layer liquid gun propellant fracturing device is identical with embodiment 1.
Claims (7)
1, a kind of oil-gas Layer liquid gun propellant fracturing process is characterized in that it comprises the steps:
(1) in pit shaft 10 with back-up sand or pump into density and construct artificial bottom of a well 9 in the oil-gas Layer bottom greater than the oiliness insulating liquid of liquid gun propellant;
(2) with tubing string 2 igniter is delivered to oil gas interval in the pit shaft 10;
(3) fill pit shaft 10 with clear water 3, pump into insulating liquid 4 with cementing truck, the pumping liquid gunpowder 8 then, pump into oil pipe insulating liquid 11 again, pump into clear water 3 promotion liquid gun propellants 8 at last and enter the oil gas interval;
(4) carry tubing string 2 on, make igniter be arranged in liquid gun propellant 8;
(5) opening wellbore 10, will clash into rod 1 and drop into tubing string 2 inner impact igniters, light liquid gun propellant 8 detonations, and the high energy gases at high pressure that produced are with oil gas interval pressure break.
2, the described oil-gas Layer liquid gun propellant of claim 1 fracturing process, it is characterized in that: the weight of said liquid gun propellant 8 is 500～1500kg, is to be made by the raw material and the proportioning thereof of following weight parts:
55～69 parts in ammonium nitrate or sodium nitrate or potassium nitrate
5～21 parts of glycerine or urea or diethylene glycols
15～35 parts in water
The weight of said insulating liquid 4 is 200～500kg, and the weight of oil pipe insulating liquid 11 is 50～200kg, and insulating liquid 4 and oil pipe insulating liquid 11 are to be made by the raw material and the proportioning thereof of following parts by volume:
0～100 part in carbon tetrachloride
100 parts of diesel oil
3, the described oil-gas Layer liquid gun propellant of claim 2 fracturing process is characterized in that wherein the weight portion proportioning of liquid gun propellant 8 each raw material is:
60～64 parts in ammonium nitrate or sodium nitrate or potassium nitrate
10～16 parts of glycerine or urea or diethylene glycols
20～30 parts in water
Wherein the parts by volume proportioning of insulating liquid 4 and oil pipe insulating liquid 11 each raw material is:
25～75 parts in carbon tetrachloride
100 parts of diesel oil
4, the described oil-gas Layer liquid gun propellant of claim 2 fracturing process is characterized in that wherein the weight portion proportioning of liquid gun propellant 8 each raw material is:
62 parts in ammonium nitrate or sodium nitrate or potassium nitrate
13 parts of glycerine or urea or diethylene glycols
25 parts in water
Wherein the parts by volume proportioning of insulating liquid 4 and oil pipe insulating liquid 11 each raw material is:
50 parts in carbon tetrachloride
100 parts of diesel oil
5, according to claim 1 or 2 or 3 described oil-gas Layer liquid gun propellant fracturing devices, it is characterized in that: said insulating liquid 4 and oil pipe insulating liquid 11 are liquid insulating liquids of commaterial.
6, a kind of oil-gas Layer liquid gun propellant fracturing device, it is characterized in that: oil gas interval artificial bottom of a well 9 is provided with liquid gun propellant 8 in the pit shaft 10, the upper surface of liquid gun propellant 8 is provided with insulating liquid 4 in pit shaft 10, the upper surface of insulating liquid 4 to well head is provided with clear water 3 in pit shaft 10, in pit shaft 10, be provided with lower end and the tubing string that connects with igniter 2 that is positioned at liquid gun propellant 8, igniter is provided with oil pipe insulating liquid 11 and clear water 3 in the tubing string 2, is provided with bump rod 1 on the ground.
7, according to the described oil-gas Layer liquid gun propellant of claim 6 fracturing device, it is characterized in that: said insulating liquid 4 and oil pipe insulating liquid 11 are liquid insulating liquids of commaterial.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200410026187 CN1584288A (en) | 2004-05-28 | 2004-05-28 | Gas-oil layer liquid gunpowder fracturing method and apparatus thereof |
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| CN 200410026187 CN1584288A (en) | 2004-05-28 | 2004-05-28 | Gas-oil layer liquid gunpowder fracturing method and apparatus thereof |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101113945B (en) * | 2007-08-24 | 2010-04-21 | 西安石油大学 | Oil gas well high-energy gas air-pumping medicament experiment evaluating device |
| CN101619654B (en) * | 2009-07-27 | 2012-06-20 | 北方斯伦贝谢油田技术（西安）有限公司 | Pulse fracturing sand injector for horizontal wells |
| CN103104239A (en) * | 2013-02-26 | 2013-05-15 | 刘玉明 | Buried sand high energy gas stress cracking method |
| CN103334734A (en) * | 2013-06-09 | 2013-10-02 | 中国石油天然气股份有限公司 | Transformation method of SAGD well interlayer |
| WO2013182082A1 (en) * | 2012-06-08 | 2013-12-12 | 四川大学 | Pneumatic fracture method and equipment for shale gas exploitation |
| CN104402659A (en) * | 2014-10-23 | 2015-03-11 | 中国石油大学(华东) | Gunpowder for realizing deep well deep bumming and fracturing |
| CN104975838A (en) * | 2015-07-17 | 2015-10-14 | 中国石油大学(华东) | Method capable of preventing pre-existing cracks against closure by adoption of high-energy gas fracture |
| CN105064972A (en) * | 2015-08-03 | 2015-11-18 | 中国石油大学(华东) | Liquid gun propellant capsule and high-energy gas fracturing process using liquid gun propellant capsule |
| CN105178933A (en) * | 2015-09-22 | 2015-12-23 | 中北大学 | Environmental protection type under-well formation fracturing device |
| CN105201483A (en) * | 2015-09-22 | 2015-12-30 | 中北大学 | Environment-friendly downhole stratum fracturing method |
| CN105986801A (en) * | 2015-02-09 | 2016-10-05 | 中国石油化工股份有限公司 | Method and device for explosive fracturing of sidetracking well |
| CN106382110A (en) * | 2015-09-17 | 2017-02-08 | 中国石油大学(北京) | Intrastratal explosive fracturing ignition ball and fracturing construction method |
| CN106748597A (en) * | 2017-01-21 | 2017-05-31 | 西安石油大学 | A kind of liquid gun propellant for high enegry gas fracturing that can be flowed in the earth formation |
| CN107849913A (en) * | 2015-06-16 | 2018-03-27 | 双环公司 | Utilize the pressure break of air/fuel mixture |
| CN111734384A (en) * | 2020-07-08 | 2020-10-02 | 通源石油科技集团股份有限公司 | Liquid gunpowder deflagration fracturing method and application thereof |
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- 2004-05-28 CN CN 200410026187 patent/CN1584288A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101113945B (en) * | 2007-08-24 | 2010-04-21 | 西安石油大学 | Oil gas well high-energy gas air-pumping medicament experiment evaluating device |
| CN101619654B (en) * | 2009-07-27 | 2012-06-20 | 北方斯伦贝谢油田技术（西安）有限公司 | Pulse fracturing sand injector for horizontal wells |
| WO2013182082A1 (en) * | 2012-06-08 | 2013-12-12 | 四川大学 | Pneumatic fracture method and equipment for shale gas exploitation |
| CN103104239A (en) * | 2013-02-26 | 2013-05-15 | 刘玉明 | Buried sand high energy gas stress cracking method |
| CN103104239B (en) * | 2013-02-26 | 2015-11-04 | 刘玉明 | One buries sand process for fracturing energetic gas |
| CN103334734A (en) * | 2013-06-09 | 2013-10-02 | 中国石油天然气股份有限公司 | Transformation method of SAGD well interlayer |
| CN104402659A (en) * | 2014-10-23 | 2015-03-11 | 中国石油大学(华东) | Gunpowder for realizing deep well deep bumming and fracturing |
| CN105986801A (en) * | 2015-02-09 | 2016-10-05 | 中国石油化工股份有限公司 | Method and device for explosive fracturing of sidetracking well |
| CN107849913A (en) * | 2015-06-16 | 2018-03-27 | 双环公司 | Utilize the pressure break of air/fuel mixture |
| CN104975838A (en) * | 2015-07-17 | 2015-10-14 | 中国石油大学(华东) | Method capable of preventing pre-existing cracks against closure by adoption of high-energy gas fracture |
| CN104975838B (en) * | 2015-07-17 | 2017-11-14 | 中国石油大学(华东) | A kind of method for preventing high enegry gas fracturing existing crack from closing |
| CN105064972A (en) * | 2015-08-03 | 2015-11-18 | 中国石油大学(华东) | Liquid gun propellant capsule and high-energy gas fracturing process using liquid gun propellant capsule |
| CN106382110A (en) * | 2015-09-17 | 2017-02-08 | 中国石油大学(北京) | Intrastratal explosive fracturing ignition ball and fracturing construction method |
| CN106382110B (en) * | 2015-09-17 | 2019-11-08 | 中国石油大学(北京) | A kind of pressing crack construction method for exploding in fracture pressure break |
| CN105201483A (en) * | 2015-09-22 | 2015-12-30 | 中北大学 | Environment-friendly downhole stratum fracturing method |
| CN105178933A (en) * | 2015-09-22 | 2015-12-23 | 中北大学 | Environmental protection type under-well formation fracturing device |
| CN106748597A (en) * | 2017-01-21 | 2017-05-31 | 西安石油大学 | A kind of liquid gun propellant for high enegry gas fracturing that can be flowed in the earth formation |
| CN111734384A (en) * | 2020-07-08 | 2020-10-02 | 通源石油科技集团股份有限公司 | Liquid gunpowder deflagration fracturing method and application thereof |
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