CN105275437A - Oil-gas field combined perforation device - Google Patents
Oil-gas field combined perforation device Download PDFInfo
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- CN105275437A CN105275437A CN201410354950.4A CN201410354950A CN105275437A CN 105275437 A CN105275437 A CN 105275437A CN 201410354950 A CN201410354950 A CN 201410354950A CN 105275437 A CN105275437 A CN 105275437A
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- oil
- pedestal
- gas field
- transmitting tube
- perforation
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Abstract
The invention discloses an oil-gas field combined perforation device which comprises a base body and is characterized in that a horizontal inner hole of the base body is connected to a transmitting tube by threads, a temperature-resistant ignition tool is connected in a vertical inner hole of the base body by threads, a bullet body is installed in the transmitting tube, a grain and a delay detonator are installed in the bullet body, and ignition powder is filled in a tail hole of the delay detonator. The oil-gas field combined perforation device disclosed by the invention reduces a high-temperature sintering area caused by energy-gathering perforation on the inner wall of a perforation hole canal, generates more and longer cracks on the hole canal inner wall, and effectively increases permeability of an oil well oil-gas layer.
Description
Technical field
The present invention relates to a kind of oil gas field composite gun perforation equipment.
Background technology
At present, it is investigated that the oil well that card oil field at home belongs to low-permeability oil deposit accounts for more than 70%, and improve this type of oil-well strata permeability, the comparatively effective way realizing well yield is Fracturing Technology, but technique construction is complicated, cost is higher (60 70 ten thousand yuan/well), and its construction total effective rate is only about 70%.Present stage, from the development of domestic and international perforating technology, due to the impact by oil well casing size, wear on the basis of dark 1 meter realizing perforation, then wear and deeply improve stratum permeability by improving perforation and need research.Therefore, a kind of applicable China's low-permeability oil deposit oil field feature, low cost and can be extremely urgent for the new technology of oil reservoir enforcement effect is developed.When Oil/gas Well carries out composite gun perforation operation, the overall blow-by of prior art, need during operation to load in advance in airtight perforator, prior art adopts acupuncture firer element to detonate, relative safety is lower, due to the impact by oil well casing size, and prior art requires once to complete perforation and bullet with entering blast action, so its internal emission medicine and the inner explosive charge of bullet body just limit relative charge weight less by size, so its emission rate and brisance will be affected, then will reduce the validity that OIH layer permeability improves.
Summary of the invention
For solving above-mentioned existing shortcoming, main purpose of the present invention is that the oil gas field composite gun perforation providing a kind of practicality is equipped, reduce perforation tunnel inwall because of while jet perforating high temperature sintering area, make duct inwall create more, longer crack, effectively improve oil well oil-gas layer permeability.
For reaching above-described object, following technical scheme taked by a kind of oil gas field composite gun perforation equipment of the present invention:
A kind of oil gas field composite gun perforation equipment, comprise pedestal, it is characterized in that, the horizontal endoporus of described pedestal is threaded connection transmitting tube, the vertical endoporus of pedestal is threaded connection heatproof igniter, install bullet body in described transmitting tube, be provided with powder column and delay detonator in described bullet body, the uropore of described delay detonator is built with ignition charge.
Between described pedestal and transmitting tube, sealing ring is installed.
The external embedding two place's bearing bands of described bullet.
Be provided with sealing ring between described heatproof igniter and pedestal, in pedestal, transmitting medicine is equipped with in the end of heatproof igniter.
Adopt the present invention of as above technical scheme, there is following beneficial effect:
Transmitting tube is bonded with interference mode and bullet body, the external embedding two place's bearing bands of bullet, there is sealing and function of holding one's breath, it is built with powder column and delay detonator, to complete bullet body delayed explosibility function, pedestal is assembling main body, and transmitting tube parts and heatproof igniter are all threaded connection with pedestal, propellant powder loads pedestal and launches in coyote hole before heatproof igniter is connected with pedestal, and its effect produces high temperature and high pressure gas instantaneously bullet body is launched being subject to external drive.Sealing ring is installed, thus good airproof performance between pedestal and transmitting tube and heatproof igniter.Achieve and can launch by predetermined way, and can complete in oil and gas wells in oil fields perforation tunnel implement explode requirement, the detonation wave that its blast produces produces pressure instantaneously and can reach 70MPa, and oily vapour rock stratum cracking pressure 40-60MPa, therefore generation crack, rock stratum can be ensured after bullet blast, decrease duct inwall because of jet perforating high temperature sintering area on the one hand, duct inwall is made to produce more, longer crack on the other hand, when operating cost significantly reduces, improve the permeability of OIH gas-bearing formation.Safety is good, can be widely used in various Oil/gas Well and carry out composite gun perforation operation.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Detailed description of the invention
In order to further illustrate the present invention, be described further below in conjunction with accompanying drawing:
As shown in Figure 1, a kind of oil gas field composite gun perforation equipment of the present invention, the horizontal endoporus of pedestal 5 is threaded connection transmitting tube 2, the vertical endoporus of pedestal 5 is threaded connection heatproof igniter 8, in transmitting tube 2, bullet body 1 is installed, powder column 4 and delay detonator 7 are installed in bullet body 1, the uropore of delay detonator 7 is built with ignition charge 11, sealing ring 3 is installed between pedestal 5 and transmitting tube 2, the outer two place's bearing bands 6 of bullet body 1, be provided with sealing ring 9 between heatproof igniter 8 and pedestal 5, in pedestal 5, the end of heatproof igniter 8 is equipped with and is launched medicine 10.During use, first the present invention's (10, every rice bran oil layer) is arranged on energy gathered bullet composite blast perforation apparatus precalculated position and is fixed by screw, make heatproof igniter of the present invention and energy gathered bullet composite blast perforation apparatus detonating fuse close contact, then perforating site is completed in cable transmission mode down to oil well oil reservoir with energy gathered bullet composite blast perforation apparatus, to be detonated energy gathered bullet composite blast perforation apparatus chopped-off head priming system by cable again, by detonating fuse propagation of explosion, detonating fuse detonation wave detonates multistage heatproof igniter of the present invention instantaneously, the flame that after heatproof igniter is detonated, it exports will light propellant powder, bullet body is launched by high temperature and high pressure gas that propellant powder produces on the one hand, light delay detonator input point gunpowder on the other hand, delay powder is lighted by ignition charge again, after delaying after a while, inner for bullet body powder column detonates by delay detonator output priming, then whole mechanism is completed.Bullet body injects perforation tunnel, in duct, certain depth is blasted, its detonation wave produced that explodes can reduce duct inwall on the one hand because of jet perforating high temperature sintering area, makes duct inwall produce more, longer crack on the other hand, improves the infiltrative object of OIH layer to reach.
Claims (4)
1. an oil gas field composite gun perforation equipment, comprise pedestal, it is characterized in that, the horizontal endoporus of described pedestal is threaded connection transmitting tube, the vertical endoporus of pedestal is threaded connection heatproof igniter, install bullet body in described transmitting tube, be provided with powder column and delay detonator in described bullet body, the uropore of described delay detonator is built with ignition charge.
2. a kind of oil gas field composite gun perforation equipment according to claim 1, is characterized in that, be provided with sealing ring between described pedestal and transmitting tube.
3. a kind of oil gas field composite gun perforation equipment according to claim 1, is characterized in that, the external embedding two place's bearing bands of described bullet.
4. a kind of oil gas field composite gun perforation equipment according to claim 1, it is characterized in that, be provided with sealing ring between described heatproof igniter and pedestal, in pedestal, transmitting medicine is equipped with in the end of heatproof igniter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410354950.4A CN105275437A (en) | 2014-07-24 | 2014-07-24 | Oil-gas field combined perforation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410354950.4A CN105275437A (en) | 2014-07-24 | 2014-07-24 | Oil-gas field combined perforation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105275437A true CN105275437A (en) | 2016-01-27 |
Family
ID=55145169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410354950.4A Withdrawn CN105275437A (en) | 2014-07-24 | 2014-07-24 | Oil-gas field combined perforation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105275437A (en) |
-
2014
- 2014-07-24 CN CN201410354950.4A patent/CN105275437A/en not_active Withdrawn
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C04 | Withdrawal of patent application after publication (patent law 2001) | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20160127 |