CN1027914C - Compound bullet for perforation and fracturing - Google Patents
Compound bullet for perforation and fracturing Download PDFInfo
- Publication number
- CN1027914C CN1027914C CN 91111244 CN91111244A CN1027914C CN 1027914 C CN1027914 C CN 1027914C CN 91111244 CN91111244 CN 91111244 CN 91111244 A CN91111244 A CN 91111244A CN 1027914 C CN1027914 C CN 1027914C
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- fracturing
- bullet
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- compound
- perforation
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Abstract
The present invention relates to a compound bullet for perforation and fracturing, which is composed of perforating segments, an igniting segment for explosion and a fracturing segment. The compound bullet is characterized in that the perforating segments and the fracturing segment are connected into a whole by the igniting segment for explosion, a perforator and a fracturing bullet are detonated and ignited by a detonating cord, the perforating segments are connected in series by a detonating cord, and a plurality of compound bullets for perforation and fracturing are connected in series by an ignition cord. The compound bullet can perforate and fracture at different levels and in different directions underground simultaneously, which has obvious effect. The present invention provides a new tool for the exploitation of petroleum and natural gas.
Description
The present invention relates to puncture the device of sleeve pipe and fracturing rock-layer underground, be mainly used in the stratum transformation of oil gas well and the compound bullet for perforation and fracturing of oil development, this bullet is made up of perforated interval, fracturing section etc.
At present in the exploitation of oil and natural gas, perforation and pressure break are the activitiess of two interruptions: penetrate with perforator earlier and wear pipe and cement sheath, and in the rock in the cement sheath outside, produce thin short crack, make thin short crack widen and extend with fracturing or high enegry gas fracturing then.The interruption of perforation and pressure break causes energy dissipation because the thin faulted joint that perforator forms can not take advantage of a favourable situation to enlarge, so during pressure break also the energy of handy pressure break open the crack again.
United States Patent (USP) 4391337(1983) introduced a kind of " integral type " compound bullet for perforation and fracturing, this compound bullet jet perforating and high enegry gas fracturing compound be one, promptly the gunpowder used of perforating bullet, detonating fuse and pressure break is loaded among the same housing.This compound resilience energy after high speed penetration jet, the instantaneous powder burning formed " gas wedge " of catching up with, the formation fracture that the effect of gas wedge forms the penetration jet is widened and is extended.But the weak point of this compound bullet is: the powder charge chamber is irregular, causes powder charge difficulty, danger, and loading density is inhomogeneous, so that influences the stability of charging quality and burning; The powder charge chamber is little, and explosive payload is few, cause the crack width that forms and length DeGrain; The structure of this compound bullet only can be at specific direction and same level perforating and fracturing.
The objective of the invention is to avoid above-mentioned weak point of the prior art and a kind of powder charge chamber rule is provided, loading density is even, and explosive payload is unrestricted, and fracturing effect obviously again can be at the compound bullet of different levels different directions while perforating and fracturing.
Design of the present invention: realize above-mentioned purpose, have only perforating bullet and Pressure breaking bullet are separated, not only be divided into two bullets but also fuse mutually on the structure.This separation has correspondingly brought new difficulty again: the one, and powder burning must be at closed system, and the 2nd, powder burning is wanted in time after the perforation, and the way that adopts common ignition and light a fire and carry out respectively says that technically difficulty is very big; If adopt a detonating fuse, can only ignite and to light a fire.Adopt now a kind of lighter, realizes that same detonating fuse ignite perforator earlier and then ignite alms giver's medicine in the igniter, the parallel wave of blast formation excites and is subjected to main ingredient, ignite the again gunpowder of Pressure breaking bullet of the starting mix that ignites, starting mix.Utilize detonating fuse that compound bullet for perforation and fracturing is connected into one.
A kind of compound bullet for perforation and fracturing of the present invention is made up of perforated interval and fracturing section, its characteristics are that perforated interval is by 1-15 perforator, fracturing section is made of 1-30 Pressure breaking bullet, with the blast section of igniting perforated interval and fracturing section are fused, the detonating fuse lower end of perforator is fixed on the bolt 19 on the igniter 8 with nut 18, and contact with alms giver's medicine 9, alms giver's medicine is pressed in the last blind hole 20 of igniter, the main ingredient 10 that is subjected to that compresses in the following blind hole 21 is connected with ignition grain 11 upper ends, the lower end is connected with the ignition charge 14 on Pressure breaking bullet top, with the fixing ignition grain of gland 12, the perforating gun 2 of compound bullet and housing 13 usefulness housings 7 are threaded.
Preferable compound bullet for perforation and fracturing of the present invention is made up of perforated interval and fracturing section, and its characteristics are that perforated interval is in series by 10 Pressure breaking bullets by 5 perforators and fracturing section.
Preferable compound bullet for perforation and fracturing of the present invention is made up of perforated interval and fracturing section, and its characteristics are that perforated interval is divided into two sections of A, B, and every section 5 perforators connect with detonating fuse between two sections, and fracturing section is in series by 20 Pressure breaking bullets.
The present invention has following advantage compared to existing technology:
1, the powder charge chamber is the cylinder of rule, and powder charge capacity, degree of packing are even, flameholding.
2, the powder charge chamber is unrestricted, and explosive payload is many, and fracturing effect is obvious.
3, can be in different levels perforation and pressure break.
Description of drawings of the present invention is as follows:
Fig. 1 is the sectional drawing of compound bullet for perforation and fracturing.
Fig. 2 is the sectional drawing of the blast section of igniting among Fig. 1.
Fig. 3 is the sectional drawing of the igniter among Fig. 1.
Fig. 4 is the schematic diagram of the compound bullet for perforation and fracturing of many perforated intervals.
Embodiment:
1, the present invention implements with reference to accompanying drawing 1,2,3:
Compound bullet for perforation and fracturing of the present invention is made up of perforated interval 1-6, the blast section of igniting 7-12 and fracturing section 13-16.
Perforated interval 1-6 is made of 5 perforators, and perforator is made of detonator 1, perforating gun 2, blind hole 3, detonating fuse 4, perforating bullet 5 and bullet frame 6.
Detonator 1: use impact detonator, be contained in the detonating fuse upper end and ignite detonating fuse.
Perforating gun 2: make with 45 steel, a lot of blind holes 3 are arranged on the body of a gun.
Detonating fuse 4: use the sheet lead detonating fuse, the upper end is connected with detonator, middle series connection perforating bullet, and the lower end is connected with the blast section of igniting.
Perforating bullet 5: use the power-assembling breaking armour bullet, be contained in and aim at blind hole 3 on the firing mount 6 as puncturing blind hole and cement sheath.
The blast section of igniting 7-12: by housing 7, igniter 8, alms giver's medicine 9, be subjected to main ingredient 10, ignition grain 11, gland 12, strengthening cap 17, nut 18, bolt 19, go up blind hole 20 and following blind hole 21 is formed.
Housing 7: use 40Mn
2Steel becomes, and top and bottom are that external screw thread is used to connect perforating gun 2 and housing 13.
Igniter 8: made upper and lower blind hole cylindrical structure with 45 steel, last blind hole dress alms giver medicine, following blind hole dress are subjected to main ingredient.
Alms giver's medicine 9: lead azide and Tai An form, and blast produces shock wave.
Be subjected to main ingredient 10: peace too, accept the shock wave ignition grain that ignites.
Ignition grain 11: the column black powder is used for the firing point gunpowder.
Gland 12: with 45
#The dome that steel is made centre bore is used for fixing ignition grain.
Strengthening cap 17: Huang Gang makes, as preventing alms giver's medicine and being subjected to main ingredient loosening.
Fracturing section 13-16: be to constitute by 10 Pressure breaking bullets.
Pressure breaking bullet: form by housing 13, ignition charge 14, gunpowder 15, pipe collar 16.
Housing 13:35CrMnSi steel is made.
Ignition charge 14: the powdery black powder, as lighting gunpowder.
Gunpowder 15: be pressed into the two virtue of column porous-3 gunpowder, produce the main charge of high energy gas.
Pipe collar 16: make with 45 steel, be used for the connector between perforator and the Pressure breaking bullet housing.
At first make the blast section of igniting with reference to accompanying drawing 2: housing 7 usefulness 35CrMnSi materials processing growth 180mm, external diameter 108mm, external diameter 100mm drum, the two ends car becomes tubing round thread, makes igniter 8 with reference to accompanying drawing 3, selects 45 for use
#Steel processing growth 70mm, maximum outside diameter 25mm, last blind hole 20 long 35mm, internal diameter 6mm, following blind hole 21 long 30mm, upper-end inner diameter 6mm, middle 10mm, lower end 15mm, and mix one on igniter top and overlap bolt 19 and nut 18, be pressed into alms giver's medicine 9 in the last blind hole, following blind hole is pressed into is used as medicine 10, and strengthening cap 17 covers, perforated interval is in series by 5 perforators, connect with pipe collar 16, inner with a detonating fuse series connection, perforator is selected existing 89 perforators for use, fracturing section is in series by 10 Pressure breaking bullets, connect with pipe collar 16, inner with many ignition grains 11 and ignition charge 15 linkings, Pressure breaking bullet is selected existing TYD-90-1 type Pressure breaking bullet for use.
Compound bullet for perforation and fracturing of the present invention is with reference to accompanying drawing 1 assembling: the lower end that the detonating fuse of perforated interval is drawn is fixed on the bolt 19 on the igniter 8 with nut 18, and contact with alms giver's medicine 9 of last blind 20, igniter housing 2 lower ends of packing into are connected, the main ingredient 10 that is subjected to of following blind hole 21 is connected upward ignition grain 11, ignition grain is fixing with gland 12, be connected by the ignition charge 14 of centre bore with Pressure breaking bullet gunpowder 15 tops, housing 13 upper ends are threaded with housing 7 lower ends.
Load onto impact detonator 1 at perforated interval during test, through ground experiment, reach a detonating fuse and ignite the designing requirement of afterwards igniting earlier, when using in the oil field, after perforated interval upper end impact detonator was gone into the well, the shutoff well head was with clashing into the Chinese toon detonating primer.
2, the present invention implements with reference to accompanying drawing 4, perforated interval is divided into A section 22 and B section 23, every section is in series by 5 perforators, connect with detonating fuse between two sections, fracturing section 25 is in series by 20 Pressure breaking bullets, fracturing section 25 is connected with blast section 24, and the blast section of igniting 24 is connected with B section 23 in the perforated interval by detonating fuse.Its implementation method is identical with example 1.Perforated interval is loaded onto electric cap when using in the oil field, connects cable shutoff well head electricity consumption detonating primer, is mainly used in the perforating and fracturing of the rock stratum of different levels close together.
Claims (3)
1, a kind of compound bullet for perforation and fracturing is made up of perforated interval and fracturing section, it is characterized in that perforated interval is by (1-15) individual perforator, fracturing section is made of (1-30) individual Pressure breaking bullet, drawing right section with blast fuses perforated interval and fracturing section, the detonating fuse lower end of perforator is fixed on the bolt (19) on the igniter (8) with nut (18), and contact with alms giver's medicine (9), alms giver's medicine is pressed in the last blind hole (20) of igniter, be pressed in the following blind hole (21) and be connected with ignition grain (11) upper end by main ingredient (10), the lower end is connected with the ignition charge (14) on Pressure breaking bullet top, with the fixing ignition grain of gland (12), perforating gun of compound bullet (2) and housing (13) are threaded with housing (7).
2, compound bullet according to claim 1 is characterized in that perforated interval is in series by 10 Pressure breaking bullets by 5 perforators and fracturing section.
3, compound bullet according to claim 1 is characterized in that perforated interval is divided into two sections of A, B, and every section 5 perforators connect with detonating fuse between two sections, and fracturing section is in series by 20 Pressure breaking bullets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91111244 CN1027914C (en) | 1991-12-03 | 1991-12-03 | Compound bullet for perforation and fracturing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91111244 CN1027914C (en) | 1991-12-03 | 1991-12-03 | Compound bullet for perforation and fracturing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1072990A CN1072990A (en) | 1993-06-09 |
| CN1027914C true CN1027914C (en) | 1995-03-15 |
Family
ID=4910527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91111244 Expired - Fee Related CN1027914C (en) | 1991-12-03 | 1991-12-03 | Compound bullet for perforation and fracturing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1027914C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1073664C (en) * | 1994-11-01 | 2001-10-24 | 地矿部西南石油地质局 | Perforator |
| CN1055330C (en) * | 1995-02-14 | 2000-08-09 | 史慧生 | Perforation and fracturing device for oil well |
| CN110318723B (en) * | 2019-07-18 | 2021-04-13 | 中国石油集团渤海钻探工程有限公司 | Intelligent bottom fracturing tool |
| CN113898330B (en) * | 2021-10-14 | 2024-02-02 | 中国石油大学(华东) | Methane in-situ perforation, blasting and fracturing integrated device and method for open hole section of horizontal well |
| CN114060006B (en) * | 2021-11-26 | 2023-11-03 | 西南石油大学 | Device for testing strength and sealing performance of cement sheath after perforation and application method thereof |
-
1991
- 1991-12-03 CN CN 91111244 patent/CN1027914C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1072990A (en) | 1993-06-09 |
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| C10 | Entry into substantive examination | ||
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |