CN2308708Y - Sieving tube loaded fracturing pellet - Google Patents
Sieving tube loaded fracturing pellet Download PDFInfo
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- CN2308708Y CN2308708Y CN 96214105 CN96214105U CN2308708Y CN 2308708 Y CN2308708 Y CN 2308708Y CN 96214105 CN96214105 CN 96214105 CN 96214105 U CN96214105 U CN 96214105U CN 2308708 Y CN2308708 Y CN 2308708Y
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Abstract
The utility model provides a sieving tube loaded fracturing pellet which is composed of a connector, a core tube assembly, an igniting loading assembly, a main loading assembly and a sieving tube assembly. The utility model is characterized in that a housing which is sealed can be loaded by the sieving tube; the utility model can be ignited by a detonating cord, and can also be ignited by an electric ignition tube. The utility model which can be combined with a perforating gun can complete perforation and high-energy gas fracture simultaneously in once underground construction, and can also be used alone for the fracturing construction of high-energy gases. The utility model has the advantages of simple structure and safety, and is suitable for shallow wells, deep wells and ultra-deep wells.
Description
The utility model belongs to the high energy gas generating means in the High-Energy Gas Fracturing Technology field of oil, natural gas formation downhole.High enegry gas fracturing is to utilize that gunpowder burns in pit shaft in the Pressure breaking bullet, produce high temperature, gases at high pressure in the nearly well area extrusion of target zone crack system, improve permeance property, thereby increase volume increase, the augmented injection new technology of oil, gas well output and water injection well injection rate, Pressure breaking bullet is the key of optimizing construction, improving effect.
High enegry gas fracturing is to begin the new developing technology field in the sixties in this century.At present, in China High-Energy Gas Fracturing Technology field, the Pressure breaking bullet of employing is divided into shell fracturing bullet and non-shell fracturing bullet.Chinese patent: 94201940.7: the cable conveying type Pressure breaking bullet that burns entirely, 89208915.6: the cased well high energy gas fracture bomb, 93119733.3: non-shell fracturing bullet, 91111244.8: compound bullet for perforation and fracturing, 94207781.4: cable connects non-shell fracturing bullet.Though more original Pressure breaking bullet has had bigger improvement at aspects such as structure designs, shell fracturing bullet and non-shell fracturing bullet are arranged, go for 3000 meters dark or greater than the pressure break of dark oil, gas well rock stratum more than 3000 meters.But above-mentioned have shell fracturing bullet that heavy metal or non-metal shell are all arranged and the housing steam vent is many, sealing reliability is relatively poor; Before the non-shell fracturing bullet pressing crack construction well-flushing is required sternly, high-temperature gas has certain damaging action to following end cable.
The purpose of this utility model: except that avoiding above-mentioned weak point of the prior art, be designed to carry out perforation and high enegry gas fracturing simultaneously, the screen casing that can carry out high enegry gas fracturing again separately loads Pressure breaking bullet.
The technical solution of the utility model: for achieving the above object, be tightly connected at the upper end and the perforating gun of connector, the lower end is connected with screen assembly, the flash hole place core-pipe subassembly that is tightly connected.When perforation is worked, light the powder column of lighting a fire in the core-pipe subassembly with the energy of detonating fuse in the perforating gun by flash hole, and light ignite powder charge and the main charge that is contained in the screen assembly successively.Utilization is ignited the time delay that powder charge and main charge are lighted, and realizes carrying out high enegry gas fracturing immediately behind the perforation.By changing sparking mode, at the upper end of core-pipe subassembly load point firearm, can construct separately, carry out high enegry gas fracturing.By change ignite powder charge and main charge become to grade, go for deep-well or ultradeep well, carry or well casing is carried and constructed with cable.
The utility model is made up of connector 1, core-pipe subassembly 2-4, the powder charge 5-6 that ignites, main charge 7 and screen assembly 8-9.
Connector 1: upper end and perforating gun are tightly connected, and the lower end is connected with screen assembly 8-9, the core-pipe subassembly 2-4 that is tightly connected of flash hole place.
Core-pipe subassembly 2-4: form by core pipe 2, igniting powder column 3 and sealing stifled 4.Light in the core-pipe subassembly 2-4 igniting powder column 3 and light the powder charge 5-6 that ignites by flash hole with the energy of detonating fuse in the perforating gun.
Powder charge 5-6 ignites: be made up of ignite powder charge powder column 5 and clad 6, be used to light main charge 7.
Main charge 7: in screen assembly 8-9, burn, produce high temperature, gases at high pressure.
Screen assembly 8-9: form by screen casing 8 and plug 9, be used for loading ignite powder charge 5-6 and main charge 7, be used for loading and extracting combustion residue.
The utility model has the advantages that: screen casing not pressure-bearing, in light weight, can reuse, can fuse with perforating gun, once go into the well with a cap sensitive, finish two kinds of constructions of perforation and high enegry gas fracturing, also can construct separately and carry out high enegry gas fracturing; But assembled on site, residue is not stayed in simple in structure, easy construction, safe and reliable in the well.The main charge assembled on site of different joint numbers, different combustion speed or different combustion face Changing Patterns can be become adjustable pulsed screen casing load Pressure breaking bullet, improve fracturing effect.
Description of drawings of the present utility model is as follows:
Embodiment:
Implementing preferred embodiments of the present utility model is:
1, implement with reference to accompanying drawing 1:
The manufacturing of connector 1: material is a medium carbon steel.
The manufacturing of core-pipe subassembly 2-4: the material of core pipe 2 and sealing stifled 4 is medium carbon steel.
The ignite manufacturing of powder charge 5-6 and main charge 7: ignite powder charge powder column 5 and main charge 7 are to be mainly the powder column that the double-base powder of nitrocotton, nitroglycerine and supplementary element is pressed into, and clad 6 can be wrapped on the powder column external surface with the bafta viscose glue.The external diameter of powder charge 5-6 and main charge 7 of igniting can be 72 millimeters, and length is 500 millimeters.
The manufacturing of screen assembly 8-9: material is medium carbon steel (or mild steel), and the external diameter of screen casing 8 can be 89 millimeters, and shortest length can be 1000 millimeters, and every lengthening is a kind of specification for 500 millimeters, the longlyest can be 5000 millimeters.
It is that connector 1, core-pipe subassembly 2-4, the powder charge 5-6 that ignites, 1 to 9 joint main charge 7 and screen assembly 8-9 (length of the joint number of main charge 7 and screen casing 8 is selected according to construction process requirement) are assembled that one cover screen casing loads Pressure breaking bullet; Load ignite powder charge 5-6 and Ge Jie main charge 7 with screen assembly 8-9, in the centre bore of powder charge 5-6 that ignites, insert core-pipe subassembly 2-4; The upper end and the perforating gun of connector 1 are tightly connected, and the lower end is connected with screen assembly 8-9, the core-pipe subassembly 2-4 that is tightly connected of flash hole place.Energy with detonating fuse in the perforating gun is lighted ignite powder charge 5-6 and main charge 7 by flash hole, core-pipe subassembly 2-4; Be applicable to that well depth is no more than 3000 meters cased well target zone, perforation and pressure break are once constructed and are finished.
2, load Pressure breaking bullet with reference to the screen casing that carries out high enegry gas fracturing of constructing separately in the accompanying drawing 2, it is characterized in that: the upper end load point firearm 10-13 of core-pipe subassembly 2-4.
Igniter 10-13: form by retainer ring 10, sealing conductive pole 11, electric squib 12 and igniter case 13.Retainer ring 10 materials are medium carbon steel, and igniter case 13 materials are aluminium alloys (or medium carbon steel).Be assembled into the screen casing loading Pressure breaking bullet that a cover is constructed separately and carried out high enegry gas fracturing according to construction process requirement, can construct separately and carry out high enegry gas fracturing.
3, load Pressure breaking bullet with reference to screen casing in the accompanying drawing 1, it is characterized in that: main charge 7 its joint numbers can be 1 to 9 joint, and cross section is made single hole tubulose or perforated tubular (as shown in Figure 3), can constitute adjustable pulsed screen casing after the assembling and load Pressure breaking bullet.
4, load Pressure breaking bullet with reference to screen casing in the accompanying drawing 1, it is characterized in that: when ignite powder charge powder column 5 and main charge 7, its composition were chloric acid amine, rubber and supplementary element, applicable to dark more than 3000 meters and or ultradeep well construction down.
Claims (2)
1, screen casing loading Pressure breaking bullet is made up of connector (1), core-pipe subassembly (2-4), the powder charge of igniting (5-6), main charge (7) and screen assembly (8-9); It is characterized in that: load ignite powder charge (5-6) and each joint main charge (7) with screen assembly (8-9), in the centre bore of the powder charge of igniting (5-6), insert core-pipe subassembly (2-4), the upper end and the perforating gun of connector (1) are tightly connected, and light the powder charge of igniting (5-6) with the energy of detonating fuse in the perforating gun by flash hole, core-pipe subassembly (2-4);
Core-pipe subassembly (2-4): form by core pipe (2), igniting powder column (3) and sealing stifled (4);
The powder charge (5-6) of igniting: powder charge powder column (5) and clad (6) are formed by igniting;
Screen assembly (8-9): form by screen casing (8) and plug (9).
2, screen casing according to claim 1 loads Pressure breaking bullet, it is characterized in that: its joint number of main charge (7) can be 1 to 9 joint, and cross section is made single hole tubulose or perforated tubular, can constitute the pulsed screen casing after the assembling and load Pressure breaking bullet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96214105 CN2308708Y (en) | 1996-06-27 | 1996-06-27 | Sieving tube loaded fracturing pellet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96214105 CN2308708Y (en) | 1996-06-27 | 1996-06-27 | Sieving tube loaded fracturing pellet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2308708Y true CN2308708Y (en) | 1999-02-24 |
Family
ID=33896288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96214105 Expired - Fee Related CN2308708Y (en) | 1996-06-27 | 1996-06-27 | Sieving tube loaded fracturing pellet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2308708Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101358519B (en) * | 2007-08-02 | 2012-04-25 | 黑龙江华安民爆器材有限责任公司 | Lifting bail type core pipe connecting with high energy gas fracture bomb |
| CN111689824A (en) * | 2020-07-08 | 2020-09-22 | 泸州北方化学工业有限公司 | Thermosensitive wire and preparation method thereof |
| CN111878002A (en) * | 2020-07-30 | 2020-11-03 | 北方斯伦贝谢油田技术（西安）有限公司 | A thread loosening bullet for tubular column coupling in pit |
-
1996
- 1996-06-27 CN CN 96214105 patent/CN2308708Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101358519B (en) * | 2007-08-02 | 2012-04-25 | 黑龙江华安民爆器材有限责任公司 | Lifting bail type core pipe connecting with high energy gas fracture bomb |
| CN111689824A (en) * | 2020-07-08 | 2020-09-22 | 泸州北方化学工业有限公司 | Thermosensitive wire and preparation method thereof |
| CN111878002A (en) * | 2020-07-30 | 2020-11-03 | 北方斯伦贝谢油田技术（西安）有限公司 | A thread loosening bullet for tubular column coupling in pit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Gao Changyou Document name: Correction notice |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |