CN206220942U - One kind passes fire and pressure relief device - Google Patents
One kind passes fire and pressure relief device Download PDFInfo
- Publication number
- CN206220942U CN206220942U CN201621235102.2U CN201621235102U CN206220942U CN 206220942 U CN206220942 U CN 206220942U CN 201621235102 U CN201621235102 U CN 201621235102U CN 206220942 U CN206220942 U CN 206220942U
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- China
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- screen casing
- fire
- joint
- sliding sleeve
- cavity
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Abstract
Fire and pressure relief device are passed the utility model discloses a kind of, including first passes fiery joint, the first plug, igniting primer, screen casing, starting mix, the fiery joint of the second biography, sliding sleeve, sealing ring, the second plug.Purpose is to solve the problems, such as have shell gas generator to be lighted a fire in multiple-pulse pressing crack construction process and high energy gas precisely acting at present.Fire can reliably be passed using the present apparatus and lighted powder charge in shell gas generator, ensure that the high temperature of burning generation, gases at high pressure reliably can quickly push sliding sleeve open simultaneously, effectively discharged from screen casing, the alignment accurate pulse pressure break in purpose stratum, multi-faceted crack is formed near wellbore, intrinsic fracture is linked up, so as to reach the purpose of oil-water well increasing yield and injection.
Description
Technical field
The utility model belongs to oil field compression fracture field, is used when relating generally to one kind using high enegry gas fracturing yield-increasing technique
Biography fire and high energy gas pressure relief device.
Background technology
High enegry gas fracturing (HEGF) is that conflagration generation is substantial amounts of in the wellbore using propellant powder or propellant
High temperature, gases at high pressure, extrude radial multiple cracking system on target payzone, improve the permeance property of near wellbore zone, so as to increase
One well stimulation of oiling gas well yield and water injection well injection rate.
There is one kind that shell gas generator is High-Energy Gas Fracturing Technology product.It refers to the high energy gas for having metal shell
Generator, the high enegry gas fracturing early stage of development, each state all once succeeded in developing can reuse the gas generator for having shell (also known as having
Shell fracturing bullet), the structure has the advantages that construction safety, low cost, easily goes into the well.But due to there is shell gas generator to have outside metal
Shell, explosive payload is few, has been rarely employed now, new application of having been got back in multiple-pulse pressure break and pressure pulse perforation recently.
The content of the invention
The utility model solve technical problem be：A kind of biography fire and pressure relief device are provided, to solve to have shell combustion gas at present
The problem of pressure break that generator is lighted a fire in multiple-pulse pressing crack construction process and high energy gas precisely do work.The device has structure letter
Single, effect reliability and the features such as have a safety feature.
The technical solution of the utility model is：One kind passes fire and pressure relief device, including igniting primer (3), screen casing (4), sliding sleeve
(7), plug, first pass fiery joint (1) and second and pass fiery joint (6)；First passes fiery joint (1) and second passes fiery joint (6)
It is stepped cavity column；Screen casing (4) is the cavity column of both ends open, and tube wall is radial and axial to be provided with some leading to
Hole；Screen casing (4) two ends pass fiery joint (1) and second with first and pass fiery joint (6) interconnection respectively, form the sky of internal run-through
Cavity；Igniting primer (3) in the cavity body of the insertion, stretch into the stepped cavity for passing fiery joint (1) with first by one end, and
First passes fiery joint (1) is connected and is sealed by sealing structure；Igniting primer (3) other end stretches into the second biography fire joint (6) ladder
In shape cavity, sliding sleeve (7), and sliding sleeve (7) and second are provided between igniting primer (3) and the fiery joint (6) of the second biography in the cavity
Sealed by sealing structure between the fiery joint (6) of biography, between sliding sleeve (7) and igniting primer (3)；In screen casing (4) internal cavity
Footpath passes the maximum ladder internal diameter of fiery joint (6) stepped cavity more than second；Igniting primer (3) built with starting mix (5), two ends with
First plug 2 and the second plug 8 of center drilling are threadedly coupled.External high pressure gas is from the second cavity for passing fiery joint (6)
Into promotion sliding sleeve (7) unidirectionally slides axially so that gases at high pressure enter in screen casing (4) cavity with sliding sleeve (7), by screen casing
(4) the through hole release discharge on.
Further technical scheme of the present utility model is：The screen casing (4) is metal circular tube, and the through-bore axis that outer wall is opened
It is mutually perpendicular to screen casing (4) center line
Further technical scheme of the present utility model is：Through hole external diameter >=the 5mm.
Further technical scheme of the present utility model is：The type of the starting mix 5 is powder column or bulk powder charge bag.
Invention effect
It is of the present utility model to have technical effect that：Can reliably be passed during fire has lighted shell gas generator using the present apparatus and filled
Medicine, while ensure that high temperature, gases at high pressure that the burning of shell gas generator produces reliably can quickly push sliding sleeve 7 open, and from
Radially spurted into pit shaft in screen casing 4, be directed at the accurate pulse pressure break in purpose stratum, multi-faceted crack is formed near wellbore,
Intrinsic fracture is linked up, so as to reach the purpose of oil-water well increasing yield and injection.
Brief description of the drawings
Fig. 1 is present apparatus structural representation
Description of reference numerals：1- first passes fiery joint；The plugs of 2- first；3- igniting primers；4- screen casings；5- starting mixs；6-；The
Two pass fiery joint；7- sliding sleeves；The plugs of 8- second；9- sealing rings.
Specific embodiment
1st, referring to Fig. 1, the device includes that first passes fiery joint 1, the first plug 2, igniting primer 3, screen casing 4, starting mix 5, the
Two pass fiery joint 6, sliding sleeve 7, the second plug 8, sealing ring 9.During assembling, starting mix 5 is put into center core igniter 3, uses
One plug 2 and the second plug 8 are blocked.Sealing ring 9 is installed in the periphery of sliding sleeve 7 and centre bore seal groove, second is placed in
Pass in fiery joint 6, sealing ring 9 then is installed in the upper end of center core igniter 3, be threaded on the first biography fire joint 1, will assemble
Good center core igniter 3 passes through screen casing 4, in the centre bore of lower end insertion sliding sleeve 7, finally passes fiery joint 1 and second by first and passes
Fiery joint 6 is threaded in the two ends of screen casing 4.The center core igniter 3 is metal circular tube of the external diameter not less than 10mm, the present embodiment
In be stainless pipe, upper end is provided with external screw thread and sealing surface, and is provided with internal thread in upper/lower terminal.The type of the starting mix 5
It is powder column or bulk powder charge bag.The plug 8 of first plug 2 and second is respectively equipped with centre bore, and the internal diameter of centre bore is less than biography
The external diameter of gunpowder powder column or bulk powder charge bag.The screen casing 4 is metal circular tube of the external diameter not less than 73mm, and interior spiral shell is provided with two ends
Line.Multigroup external diameter is furnished with not less than 5mm manholes on pipe surface, and every group of through hole is located normal to axial same plane
On, and every group of quantity of through hole is 2~12.The material of the sealing ring 9 is nitrile rubber or fluorubber.External high pressure gas from
Enter in second cavity for passing fiery joint 6, promote sliding sleeve 7 unidirectionally to slide axially so that gases at high pressure enter screen casing 4 with sliding sleeve 7
In cavity, discharge is discharged by the through hole on screen casing 4.
Operation principle of the present utility model is：By the method detonation igniter pressurizeed in well head caber or well mouth oil pipe,
Ignition device is ignited the starting mix 5 in the device, is passed fire and has been lighted powder charge in shell gas generator, and burning produces substantial amounts of
High temperature, gases at high pressure reliably, rapidly release sliding sleeve 7 from the fiery joint 6 of the second biography along center core igniter 3, are discharged into sieve
In pipe 4, and along screen casing 4 eyelet enter target zone in, to stratum do work, formed multiple-pulse pressure break, formed near wellbore
Multi-faceted crack, links up intrinsic fracture, so as to reach the purpose of oil-water well increasing yield and injection.
Claims (4)
1. it is a kind of to pass fire and pressure relief device, it is characterised in that to be passed including igniting primer (3), screen casing (4), sliding sleeve (7), plug, first
Fiery joint (1) and second passes fiery joint (6)；The fiery joint (1) of first biography and the fiery joint (6) of the second biography are stepped cavity column
Body；Screen casing (4) is the cavity column of both ends open, and tube wall is radial and axial to be provided with some through holes；Screen casing (4) two ends point
Fiery joint (1) and second is not passed with first and passes fiery joint (6) interconnection, form the cavity body of internal run-through；Igniting primer (3) position
In in the cavity body of the insertion, one end is stretched into the stepped cavity for passing fiery joint (1) with first, and first passes fiery joint (1)
Connect and sealed by sealing structure；Igniting primer (3) other end is stretched into the second biography fire joint (6) stepped cavity, in the sky
Be provided between igniting primer (3) and the fiery joint (6) of the second biography in chamber between sliding sleeve (7), and sliding sleeve (7) and the fiery joint (6) of the second biography,
Sealed by sealing structure between sliding sleeve (7) and igniting primer (3)；Screen casing (4) internal cavity internal diameter connects more than the second biography fire
The maximum ladder internal diameter of head (6) stepped cavity；Igniting primer (3) is blocked up built with starting mix (5), two ends with the first of center drilling
Head (2) and the second plug (8) threaded connection, external high pressure gas enter from the second cavity for passing fiery joint (6), promote sliding sleeve
(7) unidirectionally slide axially so that gases at high pressure enter in screen casing (4) cavity with sliding sleeve (7), are released by the through hole on screen casing (4)
Set a raft going out.
2. one kind as claimed in claim 1 passes fire and pressure relief device, it is characterised in that the screen casing (4) is metal circular tube, and
The through-bore axis that outer wall is opened are mutually perpendicular to screen casing (4) center line.
3. one kind as claimed in claim 2 passes fire and pressure relief device, it is characterised in that the through hole external diameter >=5mm.
4. one kind as claimed in claim 1 passes fire and pressure relief device, it is characterised in that starting mix (5) type is powder column
Or bulk powder charge bag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621235102.2U CN206220942U (en) | 2016-11-17 | 2016-11-17 | One kind passes fire and pressure relief device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621235102.2U CN206220942U (en) | 2016-11-17 | 2016-11-17 | One kind passes fire and pressure relief device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206220942U true CN206220942U (en) | 2017-06-06 |
Family
ID=58789690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621235102.2U Active CN206220942U (en) | 2016-11-17 | 2016-11-17 | One kind passes fire and pressure relief device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206220942U (en) |
-
2016
- 2016-11-17 CN CN201621235102.2U patent/CN206220942U/en active Active
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