CN209308670U - A kind of fluid injection and apparatus to cause bursting for oil and gas reservoir - Google Patents
A kind of fluid injection and apparatus to cause bursting for oil and gas reservoir Download PDFInfo
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- CN209308670U CN209308670U CN201821890944.0U CN201821890944U CN209308670U CN 209308670 U CN209308670 U CN 209308670U CN 201821890944 U CN201821890944 U CN 201821890944U CN 209308670 U CN209308670 U CN 209308670U
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Abstract
The utility model discloses a kind of fluid injection for oil and gas reservoir and apparatus to cause burstings, the device includes center steel column, cylinder barrel, first piston, open quick-fried unit, steel column piston, perforated interval elastic packing unit, transition joint, it is compressed axially component, guide head into, the center steel column is connected with cylinder barrel by transition joint, the first piston is movably arranged in cylinder barrel, the right end for opening quick-fried unit and first piston being set, the steel column piston is movably arranged in the steel column of center, the center steel column outer cover sets perforated interval elastic packing unit, the two sides for being compressed axially component and perforated interval elastic packing unit being set, the right end guided head into and be fixed on center steel column by hold-down bolt；Matching is provided with fluid infusion channel on the perforated interval elastic packing unit and center steel column.The utility model, which safely, controllably, can be realized reliably, carries out exploding in fracture pressure break to oil-gas Layer.
Description
Technical field
The utility model belongs to oil gas field completion technique field, and in particular to a kind of fluid injection for oil and gas reservoir and
Apparatus to cause bursting.
Background technique
Currently, opening in petroleum gas unconventional shale storage exploitation and the high-quality close low permeability oil and gas field of other routines
It adopts in operation, in Completion Operations, hydraulic fracturing becomes the key means for obtaining industrial flow.However hydraulic fracturing is costly
High, expense has accounted for 50% or more of entire Completion cost, and, in addition hydraulic fracturing pair higher in water shortage oil field fracturing expense
A large amount of consumings of water resource and environmental pollution, cause many negative socials to influence；And in some oil gas fields with a varied topography, greatly
Type hydraulic fracturing vehicle is mobile difficult, also limits the exploitation of these Region of Oil-gas.
Stratum explosive fracturing is the technical solution of most potential substitution hydraulic fracturing.
Utility model content
In view of this, the main purpose of the utility model is to provide a kind of fluid injection for oil and gas reservoir and igniting
Device.
In order to achieve the above objectives, the technical solution of the utility model is achieved in that
The utility model embodiment provides a kind of fluid injection for oil and gas reservoir and apparatus to cause bursting, during which includes
Heart steel column, first piston, opens quick-fried unit, steel column piston, perforated interval elastic packing unit, transition joint, is compressed axially group cylinder barrel
Part guides head into, and the center steel column is connected with cylinder barrel by transition joint, and the first piston is movably arranged in cylinder barrel, institute
It states and opens the right end that first piston is arranged in quick-fried unit, the steel column piston is movably arranged in the steel column of center, the center steel column
Outside is arranged perforated interval elastic packing unit, the two sides for being compressed axially component and perforated interval elastic packing unit being arranged in, institute
It states and guides the right end that head is fixed on center steel column by hold-down bolt into；The perforated interval elastic packing unit and center steel column on
With being provided with fluid infusion channel.
In above scheme, the component that is compressed axially includes first annular piston, the second annular piston, described first annular
Piston, the second annular piston are set on the steel column of center and are separately positioned on the two sides of perforated interval elastic packing unit.
In above scheme, be provided between the first annular piston and transition joint for fluid flow into first between
Gap, second annular piston and guides between head the second gap being provided with for driving liquid stream to enter into.
It further include the fluid barrier part for fluid in barrier fluid storehouse in above scheme, the fluid barrier part setting
In the right end for opening quick-fried unit.
In above scheme, the fluid barrier part is hollow steel column, is provided with through-hole on the hollow steel column.
It is described to open quick-fried unit including pressing quick-fried head, the striker that detonates, opening quick-fried bullet, shear pin in above scheme；The quick-fried head of pressure is logical
Shear pin is crossed to be fixed on first piston；The left end central hole location of first piston is arranged in the detonation striker；It is described open it is quick-fried
The left end for pressing quick-fried head is arranged in bullet.
In above scheme, the perforated interval elastic packing unit includes the first elastic seal ring, stop sleeve, the second elasticity
Sealing ring；First elastic seal ring, stop sleeve, the second elastic seal ring are from left to right sequentially sleeved at center steel column
Outside；Second fluid injector tunnel is provided on the stop sleeve.
In above scheme, first fluid injector tunnel, the first fluid injector tunnel are provided on the center steel column
Cooperate with second fluid injector tunnel and constitutes fluid infusion channel.
In above scheme, the left end of the cylinder barrel is provided with the top connection for connecting with driving unit.
Compared with prior art, the utility model realizes the close of target perforated interval by the pressure transmitting of first piston first
Then envelope automatically turns on again liquid explosives injecting stratum by perforation tunnel high pressure；When required explosive charge is injected into ground
After layer, and the momentary status of injection pressure is kept, it is immediately automatic to ignite by the liquid explosives in injection hydrocarbon formations, to oil-gas Layer
Carry out exploding in fracture pressure break；The utility model can safely, controllably, reliably realize this serial procedures.
Detailed description of the invention
Fig. 1 shows for the structure that the utility model embodiment provides a kind of fluid injection and apparatus to cause bursting for oil and gas reservoir
It is intended to；
Fig. 2 provides a kind of fluid injection for oil and gas reservoir and apparatus to cause bursting in shaft sleeve for the utility model embodiment
In pipe, start status diagram when starting；
Fig. 3 provides a kind of fluid injection for oil and gas reservoir and apparatus to cause bursting in shaft sleeve for the utility model embodiment
In pipe, liquid explosives will inject the status diagram finished；
Wherein, the center 1- steel column, 101- first fluid injector tunnel, 2- cylinder barrel, 21- fluid storehouse, 3- first piston, 4- are opened
Quick-fried unit, 41- press quick-fried head, 42- detonation striker, 43- to open quick-fried bullet, 5- steel column piston, 51- driving fluid storehouse, 6- perforated interval elasticity
Sealing unit, the first elastic seal ring of 61-, 62- stop sleeve, 621- second fluid injector tunnel, the second elastic packing of 63-
Circle, 7- transition joint, 8- be compressed axially the first annular piston of component, 81-, the second annular piston of 82-, the first gap 811-,
The second gap 821-, 9- guide head, 10- hold-down bolt, 11- fluid barrier part, 12- top connection into.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
It is to be appreciated that "left", "right" mentioned in the following implementation of the utility model is shown in each figure
Direction on the basis of, these, which are used to limit the words in direction, is intended merely to facilitate explanation, does not represent to the utility model tool
The limitation of body technique scheme.
The utility model embodiment provides a kind of fluid injection for oil and gas reservoir and apparatus to cause bursting, as shown in Fig. 1,
The device includes center steel column 1, cylinder barrel 2, first piston 3, opens quick-fried unit 4, steel column piston 5, perforated interval elastic packing unit
6, transition joint 7, be compressed axially component 8, guide first 9 into, the center steel column 1 and cylinder barrel 2 are connected by transition joint 7, described
First piston 3 is movably arranged in cylinder barrel 2, the right end for opening quick-fried unit 4 and first piston 3 being arranged in, and the steel column piston 5 is living
It moves in centrally disposed steel column 1, perforated interval elastic packing unit 6 is arranged outside the center steel column 1, it is described to be compressed axially component
8 are arranged in the two sides of perforated interval elastic packing unit 6, described to guide first 9 into and be fixed on center steel column 1 by hold-down bolt 10
Right end；Matching is provided with fluid infusion channel on the perforated interval elastic packing unit 6 and center steel column 1.
It is fluid storehouse 21, the center steel column 1 that the region between first piston 3 and steel column piston 5 is in the cylinder barrel 2
The interior region between steel column piston 5 and hold-down bolt 10 is driving fluid storehouse 51.
For storing liquid explosives in the fluid storehouse 21, in the driving fluid storehouse 51, storage is for the second ring of driving
The driving liquid of shape piston 82.
The component 8 that is compressed axially includes first annular piston 81, the second annular piston 82, the first annular piston
81, the second annular piston 82 is set on center steel column 1 and is separately positioned on the two sides of perforated interval elastic packing unit 6,
By first annular piston 81, the second annular piston 82 to the axial compression of perforated interval elastic packing unit 6 so that perforated interval bullet
Property sealing unit 6 realize sealing to perforated interval.
The first gap 811 flowed into for fluid, institute are provided between the first annular piston 81 and transition joint 7
It states the second annular piston 82 and guides the second gap 821 being provided between first 9 for driving liquid stream to enter into.
When first piston 3 moves right, the liquid explosives in fluid storehouse 21 are flowed into and are pushed by the first gap 811
First annular piston 81 moves right, while the liquid explosives in fluid storehouse 21 also push steel column piston 5 to move right, driving stream
Driving liquid in body storehouse 51 is flowed by the second gap 821 and the second annular piston 82 is pushed to be moved to the left, first ring
Shape piston 81 and the second annular piston 82 apply pressure to the both direction of perforated interval elastic packing unit 6 respectively and achieve pair
The sealing of perforated interval.
Meanwhile the movement with steel column piston 5 to the right, when the left side of steel column piston 5 passes through first fluid injector tunnel
When 101, the fluid storehouse 21 is connected to fluid infusion channel, and the liquid explosives in fluid storehouse 21 are under the pressure of first piston 3
Stratum is injected by fluid infusion channel.
First fluid injector tunnel 101, the first fluid injector tunnel 101 and are provided on the center steel column 1
The cooperation of two fluid injector tunnels 621 constitutes fluid infusion channel.
It further, further include fluid barrier part 11 for fluid in barrier fluid storehouse 21, the fluid barrier part 11
The right end for opening quick-fried unit 4 is set, by fluid barrier part 11, on the one hand enables to the liquid explosives in fluid storehouse 21 complete
Portion squeezes out fluid storehouse 21, and on the other hand, isolation remains in the liquid explosives in the first gap 811.
The fluid barrier part 11 is hollow steel column, is provided with through-hole on the hollow steel column, in this way, hollow steel column is the
After one piston 3 moves right under driving to center steel column 1, outside the hollow steel column, in cylinder barrel 2, it is first piston 3, intermediate
The sealing area that connector 7 surrounds, the liquid explosives in the sealing area are entered by the through-hole that hollow steel column left end is arranged
Stratum is injected into the central passage of hollow steel column, and by fluid infusion channel, so that liquid explosives are living by first
Plug 3 all injects stratum.
It is described to open quick-fried unit 4 including pressing quick-fried head 41, detonation striker 42, opening quick-fried bullet 43, shear pin；The quick-fried head 41 of pressure passes through
Shear pin is fixed on first piston 3；The left end central hole location of first piston 3 is arranged in the detonation striker 42；It is described to open
The left end for pressing quick-fried head 41 is arranged in quick-fried bullet 43.
The band quick-fried head 41 of dynamic pressure moves right while the first piston 3 moves right, when the liquid in fluid storehouse 21 is fried
When medicine is completely expressed, the left end face contact of the pressure quick-fried head 41 and transition joint 7, the pressure of generation cuts shear pin, at this moment,
Under pressure, quick-fried bullet 43 is opened in carrying to the quick-fried head 41 of pressure, and the centre bore along first piston 3 is moved to the left, until described open
Quick-fried bullet 43 bumps against with detonation striker 42, described to open quick-fried bullet 43 and open quick-fried, the quick-fried head 41 of pressure is punched, in the central through hole for igniting hollow steel column
Liquid explosives, for the liquid explosives that fluid infusion channel and perforated interval retain as booster explosive, the liquid for igniting injection stratum is fried
Medicine explosion.
The perforated interval elastic packing unit 6 includes the first elastic seal ring 61, stop sleeve 62, the second elastic seal ring
63；First elastic seal ring 61, stop sleeve 62, the second elastic seal ring 63 are from left to right sequentially sleeved at center steel column
Outside 1；Second fluid injector tunnel 621 is provided on the stop sleeve 62.
The first annular piston 81 applies pressure to the right to the first elastic seal ring 61, and the second annular piston 82 is to the
Two elastic seal rings 63 apply pressure to the left, since stop sleeve 62 is located at the first elastic seal ring 61 and the second elastic packing
Among circle 63, it is compressed axially and diameter so first elastic seal ring 61 and the second elastic seal ring 63 generate after being under pressure
To expansion, finally, the sealing to perforated interval is realized.
The left end of the cylinder barrel 2 is provided with the top connection 12 for connecting with driving unit.
The course of work that each unit of the utility model embodiment starts sequencing automatically is as follows:
(1) starting of driving unit:
As shown in Fig. 2, the driving unit generates driving pressure F, first piston 3 is pushed to move right, to injecting before
Pressure is generated to the liquid explosives in fluid storehouse 21；
On the one hand liquid explosives pass through the first gap 811 and flow into first annular piston 81 application pressure, on the other hand right
Steel column piston 5 applies pressure, at this point, fluid infusion channel is not connected to fluid storehouse 21, at this moment, the driving unit starting,
It is exactly that the utility model opens work.
(2) the seal process starting of perforated interval:
After the driving unit of the utility model is opened, under the action of driving pressure F, for closing penetrating for target perforated interval
The preferential automatic starting of hole section elastic packing unit 6.
Liquid explosives in the fluid storehouse 21, pass through the first gap 811 flow into and push first annular piston 81 to
Move right, pressure passed into the first elastic seal ring 61, at the same the liquid explosives in fluid storehouse 21 also push steel column piston 5 to
It moves right, drives the driving liquid in fluid storehouse 51 to flow by the second gap 821, and push the second annular piston 82 to the left
It is mobile, pressure is passed into the second elastic seal ring 63；Since stop sleeve 62 is located at the first elastic seal ring 61 and the second bullet
Among property sealing ring 63, under the continuous action of driving pressure F, first elastic seal ring 61 and the second elastic seal ring 63
Axial width become smaller, the first elastic seal ring 61 and the second elastic seal ring 63 are to being radially expanded, until squeezed tight to well
Cylinder internal surface of sleeve pipe realizes the high-pressure-resistant sealed to perforated interval both ends, and when the first elastic seal ring 61 and the second elastic packing
When the axial crushing deformation of circle 63 reaches the deflection of design requirement, namely it ensure that the sealing pressure resistance water for reaching design requirement
Flat, this is to seal to complete from perforated interval, to the key node for starting injection in next step.
(3) the automatic starting of liquid explosives injection stratum process:
When the axial crushing deformation of the first elastic seal ring 61 and the second elastic seal ring 63 reaches the deformation of design requirement
When amount, the left side of the steel column piston 5 is moved into the right side of the first fluid injector tunnel 101 on the center steel column 1
The fluid infusion channel and perforation of the utility model at this point, the fluid storehouse 21 is connected to fluid infusion channel, and then are realized in side
Eyelet is connected to hydrocarbon formations, and under the action of driving pressure F, the first piston 3 continues to move right, in fluid storehouse 21
Liquid explosives start inject stratum, as shown in Figure 3.
Under the action of driving pressure F, the fluid injection that the liquid explosives in fluid storehouse 21 have stepped through connection is logical
Road is injected into stratum.
(4) instant pressure opens the automatic starting of quick-fried, propagation of explosion, explosive fracturing process:
It is at this moment, described to open quick-fried unit 4 and be connected to transition joint after liquid explosives in fluid storehouse 21 are all forced out
7 left end is kept for the moment of injection pressure under driving pressure F continuous action, and the shear pin of the quick-fried head 41 of pressure is cut,
Under pressure, quick-fried bullet 43 is opened in carrying to the quick-fried head 41 of pressure, and the centre bore along first piston 3 is moved to the left, and detonate striker 42
Bump against with quick-fried bullet 43 is opened, open quick-fried bullet 43 and open quick-fried, punch the quick-fried head 43 of pressure, ignite the liquid explosives in the central through hole of hollow steel column,
It is fried to ignite the liquid having been injected into hydrocarbon formations as booster explosive for the liquid explosives that fluid infusion channel and perforated interval retain
Medicine realizes exploding in fracture pressure break.
Ground exploding in fracture pressure break is a dynamic process, under the impact loading of certain loading speed, in reservoir shape
At fracture swarm, reservoir volume fracture spacing is significantly promoted.Detonation wave, stress wave and a large amount of high fever of generation of explosion are high
The comprehensive function of body of calming the anger makes crack extend extension at double, meanwhile, so that rock stratum torn, misplace, distorted and generates rubble support, from
And cannot restore to be closed in situ after unloading crack, form the fracture swarm with higher permeability；Meanwhile rock is being more than surrender
Under the high pressure effect of the limit, expendable plastic deformation is generated, crack is made still to keep certain remaining slit width after unloading.
As shown in table 1, the preliminary test of the utility model shows exploding in fracture pressure break significantly better than hydraulic fracturing, layer implosion
Fried pressure break can increase substantially the drainage area of oil and gas reservoir, the communication level being obviously improved between oil and gas reservoir and pit shaft,
And the recovery ratio and well yield of oil and gas reservoir is substantially improved.
Table 1
The above, the only preferred embodiment of the utility model, are not intended to limit the protection of the utility model
Range.
Claims (9)
1. a kind of fluid injection and apparatus to cause bursting for oil and gas reservoir, which is characterized in that the device includes center steel column, cylinder
Cylinder, first piston open quick-fried unit, steel column piston, perforated interval elastic packing unit, transition joint, are compressed axially component, guide into
Head, the center steel column are connected with cylinder barrel by transition joint, and the first piston is movably arranged in cylinder barrel, described to open quick-fried list
The right end of first piston is arranged in member, and the steel column piston is movably arranged in the steel column of center, and the center steel column outer cover is set
Perforated interval elastic packing unit, the two sides for being compressed axially component and perforated interval elastic packing unit being arranged in are described to guide head into
The right end of center steel column is fixed on by hold-down bolt；It matches and is provided on the perforated interval elastic packing unit and center steel column
Fluid infusion channel.
2. the fluid injection and apparatus to cause bursting according to claim 1 for oil and gas reservoir, which is characterized in that the axial direction
Compression assembly includes first annular piston, the second annular piston, during the first annular piston, the second annular piston are set in
On heart steel column and it is separately positioned on the two sides of perforated interval elastic packing unit.
3. the fluid injection and apparatus to cause bursting according to claim 2 for oil and gas reservoir, which is characterized in that described first
Be provided between annular piston and transition joint for fluid flow into the first gap, second annular piston and guide into head it
Between be provided with the second gap for driving liquid stream to enter.
4. the fluid for oil and gas reservoir according to claim 1 to 3 injects and apparatus to cause bursting, feature exist
In further including the fluid barrier part for fluid in barrier fluid storehouse, the right end for opening quick-fried unit is arranged in the fluid barrier part.
5. the fluid injection and apparatus to cause bursting according to claim 4 for oil and gas reservoir, which is characterized in that the fluid
Barriers are hollow steel column, are provided with through-hole on the hollow steel column.
6. the fluid injection and apparatus to cause bursting according to claim 5 for oil and gas reservoir, which is characterized in that it is described open it is quick-fried
Unit includes pressing quick-fried head, the striker that detonates, opening quick-fried bullet, shear pin；The quick-fried head of pressure is fixed on first piston by shear pin；Institute
State the left end central hole location that first piston is arranged in detonation striker；It is described to open quick-fried bullet the left end for pressing quick-fried head is set.
7. the fluid injection and apparatus to cause bursting according to claim 6 for oil and gas reservoir, which is characterized in that the perforation
Section elastic packing unit includes the first elastic seal ring, stop sleeve, the second elastic seal ring；First elastic seal ring,
Stop sleeve, the second elastic seal ring are from left to right sequentially sleeved at outside the steel column of center；Second is provided on the stop sleeve
Fluid injecting hole road.
8. the fluid injection and apparatus to cause bursting according to claim 7 for oil and gas reservoir, which is characterized in that the center
First fluid injector tunnel is provided on steel column, the first fluid injector tunnel and the cooperation of second fluid injector tunnel constitute stream
Body injection channel.
9. the fluid injection and apparatus to cause bursting according to claim 8 for oil and gas reservoir, which is characterized in that the cylinder barrel
Left end be provided with the top connection for connecting with driving unit.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821890944.0U CN209308670U (en) | 2018-11-16 | 2018-11-16 | A kind of fluid injection and apparatus to cause bursting for oil and gas reservoir |
| CN201921088692.4U CN210509102U (en) | 2018-11-16 | 2018-11-16 | Axial compression assembly for sealing perforation section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821890944.0U CN209308670U (en) | 2018-11-16 | 2018-11-16 | A kind of fluid injection and apparatus to cause bursting for oil and gas reservoir |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921088692.4U Division CN210509102U (en) | 2018-11-16 | 2018-11-16 | Axial compression assembly for sealing perforation section |
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| Publication Number | Publication Date |
|---|---|
| CN209308670U true CN209308670U (en) | 2019-08-27 |
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| CN201821890944.0U Active CN209308670U (en) | 2018-11-16 | 2018-11-16 | A kind of fluid injection and apparatus to cause bursting for oil and gas reservoir |
| CN201921088692.4U Active CN210509102U (en) | 2018-11-16 | 2018-11-16 | Axial compression assembly for sealing perforation section |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921088692.4U Active CN210509102U (en) | 2018-11-16 | 2018-11-16 | Axial compression assembly for sealing perforation section |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109339761A (en) * | 2018-11-16 | 2019-02-15 | 吴继先 | Fluid injection and apparatus to cause bursting for oil and gas reservoir |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113818922B (en) * | 2021-10-25 | 2022-09-20 | 重庆大学 | Fold type rock burst control method based on ground fracturing and liquid explosive blasting |
-
2018
- 2018-11-16 CN CN201821890944.0U patent/CN209308670U/en active Active
- 2018-11-16 CN CN201921088692.4U patent/CN210509102U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109339761A (en) * | 2018-11-16 | 2019-02-15 | 吴继先 | Fluid injection and apparatus to cause bursting for oil and gas reservoir |
| WO2020098307A1 (en) * | 2018-11-16 | 2020-05-22 | 屈波 | Axial compression assembly used to seal a perforated section |
| CN109339761B (en) * | 2018-11-16 | 2024-06-25 | 屈波 | Fluid injection and detonation device for hydrocarbon reservoirs |
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| Publication number | Publication date |
|---|---|
| CN210509102U (en) | 2020-05-12 |
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