CN201531261U - Deflagration fracturing device used in cased well - Google Patents
Deflagration fracturing device used in cased well Download PDFInfo
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- CN201531261U CN201531261U CN2009203145261U CN200920314526U CN201531261U CN 201531261 U CN201531261 U CN 201531261U CN 2009203145261 U CN2009203145261 U CN 2009203145261U CN 200920314526 U CN200920314526 U CN 200920314526U CN 201531261 U CN201531261 U CN 201531261U
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- pressure break
- central tube
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Abstract
The utility model relates to the field of oil exploration, in particular to a deflagration fracturing device used in a cased well, which overcomes the problems that a traditional fracturing device has low speed of fire spread and is unstable, and fracturing powders are dangerous when being used. The deflagration fracturing device comprises an ignition device, a fire spread device connected with the ignition device, a central tube, a plurality of module-type fracturing grains and at least one wear resistant body, wherein the fire spread device is arranged in the central tube; the fracturing grains are arranged on the periphery of the central tube; the wear resistant body is positioned between the two adjacent fracturing grains; and the external diameter of the wear resistant body is greater than that of each fracturing grain.
Description
Technical field
The utility model relates to the petroleum exploration and development technical field, the detonation fracturing device that particularly a kind of oil, gas, well and old well increasing yield and injection that is used for cased hole completion transformed.
Background technology
Casing cementing, perforation completion are adopted in oil field development now mostly; And for oil gas well, water injection well behind the perforation since when drilling well, well cementation, perforation to having caused the near wellbore zone pollution in the stratum; Old well recover the oil and the injecting process in time prolongation, the gathering gradually of materials such as the high molecular polymer in the oil reservoir also can be stopped up oily discharge orifice road; These all can cause near wellbore zone permeability variation, cause output or water injection rate to reduce, particularly for the low porosity and low permeability oil reservoir even cause the consequence that stops production.The oil field is a hydrofracturing method for the method that such oil well adopted at present, but with showing the increasingly sophisticated of oil field development geological condition, particularly, adopt fracturing water string phenomenon very easily to take place and cause the oil gas well to be scrapped for a large amount of low water oil caps and the oil-gas Layer of limit water.The detonation pressure break is a kind of method that solves this type of problem, and the high energy gas that this method utilizes powder burning to produce acts on the perforation tunnel pressure break acting is carried out on the stratum, separates depollution by pressing off the crack, near wellbore zone, improves production capacity.Along with a large amount of exploitations of hypotonic special low-permeability oilfield in recent years, each oilfield old well transformation increases day by day, and the detonation fracturing technique more and more obtains using as a kind of well stimulation fast and effectively.But the detonation fracturing device that uses both at home and abroad is multifarious at present, mostly adopts the igniter igniting, and starting mix passes fire, and it is slow and unstable to pass fire; The pressure break medicine directly contacts with the borehole wall very easily and causes that because of friction mistake is quick-fried.
Summary of the invention
Problem to be solved in the utility model is: a kind of igniting is provided, passes fire safety and stable cased well detonation fracturing device.
The technical scheme that addresses the above problem is: the cased well detonation fracturing device that is provided is made of igniter, the biography fire device, central tube, more piece modular pressure break powder column and at least one wear body that are connected with igniter, wherein passing fiery device is contained in the central tube, modular pressure break powder column centering pipe periphery, wear body is between adjacent two joint modular pressure break powder columns, and the external diameter of this wear body is greater than modular pressure break powder column external diameter.During pressure break, respectively save modular pressure break powder column by passing fiery device ignition after the ignition device, the gas impulse that the pressure break medicine produces impacts the rock stratum with higher loading speed and loads, and makes the rock stratum form many cracks along each perforation tunnel.Because the wear body of diameter greater than modular pressure break powder column is housed, thus in the launch process of fracturing device the pressure break powder column not can with borehole wall contact friction, wear body also has certain guide effect simultaneously, increases the stability of throwing in.
Above-mentioned igniter can adopt existing various igniter, but preferably adopts the fast Magnedat igniter of ignition rate.
Above-mentioned biography fire device preferably is made up of detonating fuse and the starting mix that is enclosed within the detonating fuse outside, and the fire transmission rate of this structure is fast and stable, uses detonating fuse to connect with perforating gun and carries out integration of operation.
On the tube wall of above-mentioned central tube, also ring-shaped groove or axial groove can be set, these grooves are as the stress groove, when igniting blasting, be more conducive to central tube and produce the crack,, thereby realize gas fracturing device actuating pressure and the control of time so that adjust the delivery mode of ignition charge energy in the central tube.
The utility model adopts the exposed pressure break powder column of no any shell, and safety, stable, has improved the explosive payload on the unit length effectively.The utility model is simple in structure, explosive payload is big, owing to adopt modular pressure break powder column, every joint pressure break powder column can be optimized design according to different well ' s conditions, adopt the gunpowder of different performance, make the P-T curve reach optimum efficiency, particularly the volume increase for oilfield old well provides a good fracturing device.
Description of drawings
Fig. 1 is the overall structure figure of an embodiment of the utility model.
Fig. 2 is biography fire device and the pressure break powder column structure chart partly among Fig. 1.
The specific embodiment
Below in conjunction with drawings and Examples content of the present utility model is described in detail.
As shown in Figure 1 and Figure 2, cased well detonation fracturing device of the present utility model is made of igniter 1, the fiery device 2 of biography, central tube 3, modular pressure break powder column 4 and wear body 5.Igniter 1 is the Magnedat igniter, and Magnedat is connected with detonating fuse, and central tube 3 is connected with igniter 1 by joint 11.Pass fiery device 2 and be made up of detonating fuse 21 and the starting mix 22 that is enclosed within the detonating fuse outside, they all are contained in the central tube 3.Central tube 3 has more piece, holds together by joint 31, and the tube wall of central tube 3 is provided with several equally distributed axial grooves.When igniter 1 detonating fuse 21 that ignites, detonating fuse 21 ignites again behind the starting mix 22, in central tube 3, cause instantaneous pressure, cause the axial groove on the central tube tube wall to break, detonation energy is delivered to outer field modular pressure break powder column 4, ignite the pressure break medicine, the gas impulse that the pressure break medicine produces impacts the rock stratum and loads, and makes the rock stratum form many cracks along each perforation tunnel.
Modular pressure break powder column 4 according to this device of different well ' s conditions can be a kind of gunpowder, also can be gunpowder not of the same race, makes the P-T curve reach optimum efficiency.
Also be provided with wear body 5 between each joint modular pressure break powder column 4, wear body 5 is the annular slice of band flanging 51, and its external diameter is greater than the external diameter of modular pressure break powder column 4.
Be provided with guide way 6 at central tube 3 tail ends, the external diameter of this guide way 6 equals the external diameter of wear body 5, greater than the external diameter of modular pressure break powder column 4, the pressure break powder column of this device can not contacted in launch process with the borehole wall, avoids meeting accident.
This device can also carry out integration of operation with perforator, and perforation, pressure break are once finished.
Claims (7)
1. cased well detonation fracturing device, it is characterized in that by igniter (1), the biography fire device (2) that is connected with igniter, central tube (3), more piece modular pressure break powder column (4) and at least one wear body (5) formation, wherein passing fiery device (2) is contained in the central tube (3), modular pressure break powder column (4) centering pipe (3) periphery, wear body (5) is between adjacent two joint modular pressure break powder columns, and the external diameter of this wear body is greater than modular pressure break powder column external diameter.
2. detonation fracturing device according to claim 1 is characterized in that the annular slice of wear body (5 for) band flanging (51).
3. detonation fracturing device according to claim 1 is characterized in that igniter (1) is the Magnedat igniter.
4. according to claim 1,2 or 3 described detonation fracturing devices, it is characterized in that passing fiery device (2) and form by detonating fuse (21) and the starting mix (22) that is enclosed within the detonating fuse outside.
5. detonation fracturing device according to claim 4 is characterized in that being provided with guide way (6) at the central tube tail end, and the external diameter of this guide way equals the external diameter of wear body (5), greater than the external diameter of modular pressure break powder column (4).
6. detonation fracturing device according to claim 4 is characterized in that being provided with ring-shaped groove or axial groove on the tube wall of central tube (3).
7. detonation fracturing device according to claim 6 is characterized in that being provided with guide way (6) at the central tube tail end, and the external diameter of this guide way equals the external diameter of wear body (5), greater than the external diameter of modular pressure break powder column (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203145261U CN201531261U (en) | 2009-11-11 | 2009-11-11 | Deflagration fracturing device used in cased well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203145261U CN201531261U (en) | 2009-11-11 | 2009-11-11 | Deflagration fracturing device used in cased well |
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| Publication Number | Publication Date |
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| CN201531261U true CN201531261U (en) | 2010-07-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009203145261U Expired - Lifetime CN201531261U (en) | 2009-11-11 | 2009-11-11 | Deflagration fracturing device used in cased well |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102080527A (en) * | 2010-12-29 | 2011-06-01 | 西安通源石油科技股份有限公司 | Method and device for detonating and fracturing scattered objects |
| CN103225498A (en) * | 2013-04-19 | 2013-07-31 | 中国石油天然气股份有限公司 | Multipole composite deep penetration perforation device |
| CN103244096A (en) * | 2013-05-22 | 2013-08-14 | 西安石油大学 | Device and method for closed pulse loading fracture relaxation crustal stress of gas layer |
| CN103590802A (en) * | 2013-11-26 | 2014-02-19 | 西安通源石油科技股份有限公司 | Horizontal well staged fracturing device and method |
| CN104481492A (en) * | 2014-12-02 | 2015-04-01 | 刘玉明 | Heat source fracturing method and device based on electromagnetic heating excitation |
| CN104499977A (en) * | 2014-12-31 | 2015-04-08 | 北方斯伦贝谢油田技术（西安）有限公司 | Horizontal well bushing shaping repair method and device |
| CN105370258A (en) * | 2015-10-09 | 2016-03-02 | 湖北东神楚天化工有限公司 | Blasting cracking method for improving oil and gas production |
| CN106246156A (en) * | 2016-08-23 | 2016-12-21 | 中国海洋石油总公司 | Method made by a kind of explosion fracturing acidifying connection |
| CN112145143A (en) * | 2020-11-09 | 2020-12-29 | 黄山联合应用技术研究院 | Novel oil well repairing method |
-
2009
- 2009-11-11 CN CN2009203145261U patent/CN201531261U/en not_active Expired - Lifetime
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102080527A (en) * | 2010-12-29 | 2011-06-01 | 西安通源石油科技股份有限公司 | Method and device for detonating and fracturing scattered objects |
| CN103225498A (en) * | 2013-04-19 | 2013-07-31 | 中国石油天然气股份有限公司 | Multipole composite deep penetration perforation device |
| CN103225498B (en) * | 2013-04-19 | 2015-11-18 | 中国石油天然气股份有限公司 | Multipole composite deep penetration perforation device |
| CN103244096B (en) * | 2013-05-22 | 2015-08-19 | 西安石油大学 | The closed pulse of coal gas layer loads the device and method of pressure break loosely stress |
| CN103244096A (en) * | 2013-05-22 | 2013-08-14 | 西安石油大学 | Device and method for closed pulse loading fracture relaxation crustal stress of gas layer |
| CN103590802A (en) * | 2013-11-26 | 2014-02-19 | 西安通源石油科技股份有限公司 | Horizontal well staged fracturing device and method |
| CN103590802B (en) * | 2013-11-26 | 2017-01-11 | 西安通源石油科技股份有限公司 | horizontal well staged fracturing device and method |
| CN104481492A (en) * | 2014-12-02 | 2015-04-01 | 刘玉明 | Heat source fracturing method and device based on electromagnetic heating excitation |
| CN104499977A (en) * | 2014-12-31 | 2015-04-08 | 北方斯伦贝谢油田技术（西安）有限公司 | Horizontal well bushing shaping repair method and device |
| CN105370258A (en) * | 2015-10-09 | 2016-03-02 | 湖北东神楚天化工有限公司 | Blasting cracking method for improving oil and gas production |
| CN105370258B (en) * | 2015-10-09 | 2018-01-19 | 湖北东神楚天化工有限公司 | Cracking method is made in a kind of explosion for improving oil and gas production |
| CN106246156A (en) * | 2016-08-23 | 2016-12-21 | 中国海洋石油总公司 | Method made by a kind of explosion fracturing acidifying connection |
| CN106246156B (en) * | 2016-08-23 | 2018-12-14 | 中国海洋石油集团有限公司 | A kind of explosion fracturing acidification connection makees method |
| CN112145143A (en) * | 2020-11-09 | 2020-12-29 | 黄山联合应用技术研究院 | Novel oil well repairing method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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Granted publication date: 20100721 |