CN1970989A - Throwing type high energy gas fracturing device - Google Patents
Throwing type high energy gas fracturing device Download PDFInfo
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- CN1970989A CN1970989A CN 200610105130 CN200610105130A CN1970989A CN 1970989 A CN1970989 A CN 1970989A CN 200610105130 CN200610105130 CN 200610105130 CN 200610105130 A CN200610105130 A CN 200610105130A CN 1970989 A CN1970989 A CN 1970989A
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Abstract
The invention relates to an expendable fracturing machine with high-energy air, belonging to increasing technology for oil and gas well, comprising ignition device, fracturing bomb connected with the ignition device. The ignition device comprises piston for firing pin in the cylinder and exciting device. The piston for firing pin is connected with the cylinder by radial fixed pin. The detonator or artillery primer of fracturing bomb is set at the bottom of cylinder and is corresponding to firing pin. The special feature of invention is that said exciting device for firing pin comprises pilot valve controlled by spring to open; the inlet of pilot valve is connected with outside, the first port of connecting pipe is located at the position of outlet of pilot valve and the second port of connecting pipe is connected with sealing hollow cavity at the tail of the piston for firing pin. Because the spring is used to control the open of pilot valve so as to guide the fluid in well to the piston for firing pin, it is provided with quick respond, high control accuracy, reliably running and high success rate of work.
Description
Technical field
The invention belongs to oil, oil/gas well stimulation technology, specifically a kind of throwing type high energy gas fracturing device.
Background technology
For the producing well or the old well in oil field, along with the growth of production time, the geological condition around the former perforated interval of oil reservoir can constantly change.Except that the potentially contaminated that drilling well before going into operation and completion process cause the stratum, oil well is after operation, and the crude oil in the oil reservoir enters the perforation tunnel by blowhole, intrinsic fracture or man-made fracture.In this process, the organic matter in the oil reservoir, macromolecule base polymer and down-hole microorganism, bacterium etc. can assemble hole and the crack of stopping up the near wellbore zone gradually, cause near wellbore zone permeability variation, the result who causes oil production to reduce gradually and stop production.In order to eliminate the pollution that this obstruction causes, link up produce oil hole and slit again, recover crude oil production, adopt High-Energy Gas Fracturing Technology that de-plugging and fracturing reform are periodically implemented in the stratum.Adopting High-Energy Gas Fracturing Technology that de-plugging and fracturing reform are periodically implemented in the stratum, to can yet be regarded as a kind of be the effective again good method of economy.Present high enegry gas fracturing adopts the cable delivery technology mostly, promptly by cable Pressure breaking bullet is delivered to oil layer section, from ground by cable the Pressure breaking bullet the pit shaft is lighted a fire then.There is following defective in this technology: 1) high temperature and high pressure gas of Pressure breaking bullet burning back formation is ablated cable; 2) lift and make the cable knotting on, particularly carry operation for crossing oil pipe, the cable knotting causes very big influence to construction; 3) construction operation need be equipped with equipment such as cable car and location instrument, and construction cost strengthens.
Chinese patent CN1664307 discloses a kind of throwing type fracturing equipment, it comprises the pressure igniter and produces Pressure breaking bullet two parts of high energy gas, this pressure igniter comprises the piston and the striker that are contained in the cylindrical shell, one end of piston communicates with the external world, the other end of piston is relative with the striker body, and leave the gap, piston and striker body all link together by several steady pins and cylindrical shell.When implementing pressure break fracturing equipment is dropped in the oil well, allow its free-falling, steady pin is cut off when the pressure of liquid effects in the well on piston surpasses the shearing drag of piston steady pin, piston falls, and pushing striker body, the steady pin of striker body is cut off striker percussion cap, light the gunpowder and the powder column of Pressure breaking bullet, thereby implement pressure break.This throwing type fracturing equipment is to determine in precalculated position enforcement pressure break by the relation between the shearing drag of fluid pressure in the well and piston steady pin, but in fact because the influence of factors such as processing, assembling and material itself, the shearing drag of each steady pin is difficult to reach accurate control, and it is just more difficult that several steady pins are cut off simultaneously, in case the time that several steady pins are cut off is inconsistent or the error of accumulative total shearing force is bigger, the then this method of utilizing steady pin shearing drag to control the pressure break position will lose meaning.In addition, steady pin to cut off process time also longer relatively.So the reaction speed of this throwing type fracturing equipment is slow, precision is low, error is big, and lost efficacy easily.
Summary of the invention
Problem to be solved by this invention is: above-mentioned existing throwing type fracturing equipment is improved, the throwing type high energy gas fracturing device that a kind of reaction speed is fast, precision is higher is provided.
The technical scheme that addresses the above problem is: the throwing type high energy gas fracturing device that is provided comprises igniter and the Pressure breaking bullet that is connected with igniter, this igniter comprises that one is contained in the interior striker piston of cylindrical shell and the excitation apparatus of striker, the striker piston passes through radially, and steady pin is connected with this cylindrical shell, the detonator of Pressure breaking bullet or the fire in a stove before fuel is added are located at the bottom in the aforementioned cylindrical shell, and corresponding with striker; Special feature of the present invention is that the excitation apparatus of said striker comprises that a pilot valve with spring control unlatching, the import of pilot valve communicate with the external world, first port of a connecting pipe is positioned at the exit of pilot valve, and second port of this connecting pipe communicates with the closed cavity at striker piston tail end place.
The above-mentioned pilot valve of opening with spring control can be ball valve or needle-valve etc.
During use this fracturing equipment is dropped in the well, fracturing equipment freely descends by deadweight, and pit shaft liquid enters pilot valve.During beginning since the control spring of pilot valve to the pressure of spool greater than the pressure of pit shaft liquid to spool, pilot valve is closed, when arriving the predefined oil reservoir position or the degree of depth pit shaft liquid to the pressure of spool greater than the control spring of pilot valve pressure to spool, pilot valve is opened, pit shaft liquid enters the closed cavity at striker piston tail end place by pilot valve and connecting pipe, it is to the pressure of the striker piston shearing drag much larger than striker piston steady pin, steady pin is cut off, the striker piston falls, the striker impact detonator or the fire in a stove before fuel is added excite Pressure breaking bullet to implement pressure break.
Compared with prior art, the present invention adopts spring to control the unlatching of pilot valve, and then pit shaft liquid is guided to the striker piston, and not only response is fast, control accuracy is high, and reliable, the job success ratio height; Because spring force and its elongation are linear relationship, accurately regulate so can realize stepless difference, this has just created condition for the versatility of fracturing equipment, can regulate easily according to different wellbore pressures.And above-mentioned existing throwing type fracturing equipment can only carry out pressure according to the quantity of the differential steady pin of setting pressure and regulates, unadjustable in the differential scope of pressure, accurately regulate so can not realize stepless difference, cause the consequence that control accuracy is low, job success ratio is low.
Description of drawings
Fig. 1 is the overall structure figure of one embodiment of the invention.
Fig. 2 is the structure chart of igniter among Fig. 1.
The specific embodiment
Below in conjunction with drawings and Examples content of the present invention is described in detail.
As shown in Figure 1: this fracturing equipment is made up of the igniter 2, igniter output end connector 3, Pressure breaking bullet 4, transition joint 5 and the tail that connect successively stifled 6.For the ease of after pressure break, opening a hole at the end, connect a T shape fishing head 1 in the upper end of igniter 2, utilize movable claw T shape fishing head 1 can be caught, thereby remains are taken out.
As shown in Figure 2: igniter 2 is cylindrical, mainly the pilot valve of opening by shell 7, T shape fishing head 1, with spring control 8, be contained in striker piston 91 in the striker cylindrical shell 9 and igniting core print seat 10 etc. and form.Wherein pilot valve 8 is connected with the upper and lower end of shell 7 respectively by screw thread with striker cylindrical shell 9, and the junction is provided with seal 71,72, and T shape fishing head 1 is connected pilot valve valve seat tail end; The lower end of striker piston 91 is strikers 92, by steady pin 93 striker piston 91 and striker cylindrical shell 9 is linked together, and is used to guarantee safety; In the igniting core print seat 10 detonator 11, detonating fuse 12 and detonating primer 13 are housed.The above-mentioned pilot valve of opening with spring control 8 adopts ball valve, it comprises valve body 81, spool 82, is contained in the interior valve seat 83 of valve body, is contained in control piston 84, the control spring 85 that forces in this control piston second end and spring base 86 in the valve body, wherein valve seat 83 is provided with axially extending bore 831 and the radial direction through hole 832 that is interconnected, radial direction through hole 832 communicates with the external world, and first end of the spool 82 controlled pistons 84 of pilot valve is pressed in the exit of valve seat 83 axially extending bores 831.Valve body 81 is a cylindrical shape, and its periphery is provided with an axial elongated slot, forms an axial passage between this axial elongated slot and the shell, and this axial passage constitutes a connecting pipe 87 with the radial direction through hole of valve body 81.The first port 87a of connecting pipe 87 is positioned at the contact position of valve body 81 and control piston 84, the position of the first port 87a of this connecting pipe 87 is to determine like this: when control piston 84 is not promoted by the spool 82 of pilot valve, and the first port 87a complete shutoff in controlled piston 84 sides of connecting pipe; After control piston is passed by the spool of pilot valve, on the first port 87a of connecting pipe and the control piston cavity 88 be communicated with, the second port 87b of connecting pipe 87 communicates with the closed cavity 89 of striker piston tail end.
When implementing pressure break, use transition joint 5 to connect Pressure breaking bullets 4 according to the pressure break requirement of well in operation oil, last Pressure breaking bullet is connected with tail stifled 6, forms pressure break bomb tube string.According to well in operation oil reservoir position (or degree of depth), calculate the wellbore pressure of oil reservoir position again, the precompressed value according to wellbore pressure setting pilot valve control spring 85 is assembled into throwing type high energy gas fracturing device at last.Open well head, throwing type high energy gas fracturing device is dropped into pit shaft, well liquid flows into pilot valve through the radial hole 832 of valve seat 83.When the fracturing equipment whereabouts degree of depth during less than desired depth, well liquid acts on pressure on the pilot valve core 82 less than the precompressed value of control spring 85, and pilot valve 8 is closed; When the fracturing equipment whereabouts degree of depth arrives predetermined mine shaft depth, when the well hydraulic coupling equals or exceeds the precompressed value of control spring 85, pilot valve core 82 is pushed away valve seat, pilot valve 8 is opened, at this moment, well liquid enters cavity 88, and with strength promotion control piston much larger than the control spring precompression, control piston moves down into rapidly under the first port 87b of connecting pipe 87, well liquid is exerted pressure to the striker piston, because the shearing drag of steady pin 93 is much smaller than the thrust of striker piston through the closed cavity 89 of connecting pipe 87 inflow striker piston tail ends, steady pin 93 is cut off, the striker piston is pushed rapidly, the striker impact detonator, thus the Pressure breaking bullet that detonates is implemented pressure break.
For the ease of regulating spring power, for being threaded, the spring base lower end is provided with screw plug 861 between the spring base 86 of above-mentioned control spring and pilot valve body 81 inwalls.
When needs adopt sparking mode to ignite Pressure breaking bullet, as long as above-mentioned detonator, detonating fuse and detonating primer are replaced by ignition module, gunpowder and the powder column that contains cap alive and ignitron.
Claims (5)
1, a kind of throwing type high energy gas fracturing device, the Pressure breaking bullet (4) that comprises igniter (2) and be connected with igniter, this igniter () comprises that one is contained in the interior striker piston (91) of cylindrical shell (9) and the excitation apparatus of striker, striker piston (91) passes through radially, and steady pin (93) is connected with this cylindrical shell (9), the detonator of Pressure breaking bullet (4) or the fire in a stove before fuel is added are located at the bottom in the aforementioned cylindrical shell (9), and it is corresponding with striker (92), the excitation apparatus that it is characterized in that said striker comprises a pilot valve (8) of opening with spring control, the import of pilot valve (8) communicates with the external world, first end (87a) of a connecting pipe (87) is positioned at the exit of pilot valve (8), and second port (87b) of this connecting pipe (87) communicates with the closed cavity (89) at striker piston tail end place.
2, throwing type high energy gas fracturing device according to claim 1 is characterized in that the pilot valve of opening with spring control (8) is ball valve or needle-valve.
3, throwing type high energy gas fracturing device according to claim 1, it is characterized in that the described pilot valve of opening with spring control (8) is a ball valve, it comprises valve body (81), spool (82), be contained in the valve seat (83) in the valve body, be contained in the control piston (84) in the valve body and force in the control spring (85) and the spring base (86) of this control piston second end, wherein valve seat (83) is provided with axially extending bore (831) and the radial direction through hole (832) that is interconnected, radial direction through hole (832) communicates with the external world, and first end of the controlled piston of the spool of pilot valve (82) (84) is pressed in the exit of valve seat (83) axially extending bore (831).
4, throwing type high energy gas fracturing device according to claim 3, it is characterized in that first port of said connecting pipe (87) is positioned at the contact position of valve body (81) and control piston (84), the position of first end (87a) of this connecting pipe (87) is to determine like this: when control piston (84) is not promoted by the spool of pilot valve (82), and the complete shutoff in the controlled piston of first port (87a) (84) side of connecting pipe; After control piston is passed by the spool of pilot valve, on first port (87a) of connecting pipe and the control piston cavity (88) be communicated with.
5,, it is characterized in that between described spring base (86) and pilot valve body (81) inwall that for being threaded, spring base (86) lower end is provided with screw plug (861) according to claim 3 or 4 described throwing type high energy gas fracturing devices.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101051307A CN100545416C (en) | 2006-12-06 | 2006-12-06 | Throwing type high energy gas fracturing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101051307A CN100545416C (en) | 2006-12-06 | 2006-12-06 | Throwing type high energy gas fracturing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1970989A true CN1970989A (en) | 2007-05-30 |
| CN100545416C CN100545416C (en) | 2009-09-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101051307A Active CN100545416C (en) | 2006-12-06 | 2006-12-06 | Throwing type high energy gas fracturing device |
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| CN (1) | CN100545416C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102261239A (en) * | 2011-08-09 | 2011-11-30 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | High-energy gas fracturing process for cable transmission |
| 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 |
| CN106089173A (en) * | 2016-06-22 | 2016-11-09 | 肖倩 | A kind of completion mode with protection reservoir packing function |
| CN109339761A (en) * | 2018-11-16 | 2019-02-15 | 吴继先 | Fluid injection and apparatus to cause bursting for oil and gas reservoir |
| CN110306966A (en) * | 2019-07-22 | 2019-10-08 | 屈波 | Liquid explosives injection and exploding in fracture fracturing device for oil-gas casing well |
| CN110578507A (en) * | 2019-09-18 | 2019-12-17 | 曹永泉 | Reusable sand blower for fracturing stratum of oil field |
-
2006
- 2006-12-06 CN CNB2006101051307A patent/CN100545416C/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102261239A (en) * | 2011-08-09 | 2011-11-30 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | High-energy gas fracturing process for cable transmission |
| 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 |
| CN106089173A (en) * | 2016-06-22 | 2016-11-09 | 肖倩 | A kind of completion mode with protection reservoir packing function |
| CN106089173B (en) * | 2016-06-22 | 2018-08-07 | 陕西城鸿实业有限公司 | A kind of completion mode with protection reservoir packing function |
| CN109339761A (en) * | 2018-11-16 | 2019-02-15 | 吴继先 | Fluid injection and apparatus to cause bursting for oil and gas reservoir |
| CN110306966A (en) * | 2019-07-22 | 2019-10-08 | 屈波 | Liquid explosives injection and exploding in fracture fracturing device for oil-gas casing well |
| CN110578507A (en) * | 2019-09-18 | 2019-12-17 | 曹永泉 | Reusable sand blower for fracturing stratum of oil field |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100545416C (en) | 2009-09-30 |
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| CP01 | Change in the name or title of a patent holder |
Address after: High tech Zone technology two road 710075 Shaanxi city of Xi'an province No. 70 Software Park Lege Tang room D301 Patentee after: Tongyuan Petroleum Science and Technology Group Co., Ltd. Address before: High tech Zone technology two road 710075 Shaanxi city of Xi'an province No. 70 Software Park Lege Tang room D301 Patentee before: Xi'an Tongyuan Petrotech Co., Ltd. |
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| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: No.1307, 13 / F, block a, No.51 Tangyan Road, hi tech Zone, Xi'an City, Shaanxi Province, 710075 Patentee after: Tongyuan Petroleum Science and Technology Group Co.,Ltd. Address before: High tech Zone technology two road 710075 Shaanxi city of Xi'an province No. 70 Software Park Lege Tang room D301 Patentee before: Tongyuan Petroleum Science and Technology Group Co.,Ltd. |