CN110359894A - A kind of hydraulic fracturing pressure releasing method and device - Google Patents
A kind of hydraulic fracturing pressure releasing method and device Download PDFInfo
- Publication number
- CN110359894A CN110359894A CN201910563633.6A CN201910563633A CN110359894A CN 110359894 A CN110359894 A CN 110359894A CN 201910563633 A CN201910563633 A CN 201910563633A CN 110359894 A CN110359894 A CN 110359894A
- Authority
- CN
- China
- Prior art keywords
- elastic membrane
- pressure
- pressure release
- target hole
- fracturing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 111
- 239000012528 membrane Substances 0.000 claims abstract description 120
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 66
- 230000008569 process Effects 0.000 claims abstract description 63
- 238000002347 injection Methods 0.000 claims abstract description 45
- 239000007924 injection Substances 0.000 claims abstract description 45
- 230000007246 mechanism Effects 0.000 claims description 18
- 238000005553 drilling Methods 0.000 claims description 8
- 239000003245 coal Substances 0.000 abstract description 9
- 238000009825 accumulation Methods 0.000 abstract description 5
- 230000006378 damage Effects 0.000 description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 208000027418 Wounds and injury Diseases 0.000 description 6
- 208000014674 injury Diseases 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 206010020852 Hypertonia Diseases 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/1208—Packers; Plugs characterised by the construction of the sealing or packing means
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
The present invention relates to coal mine roadway equipment technical field more particularly to a kind of hydraulic fracturing pressure releasing methods and device.This method includes pressure release process, pressure release process the following steps are included: S1, by elastic membrane pressure release under the packer for setting the fracturing section lower end in target hole to non-pressurising state so that the ponding in fracturing section is all flowed out along target hole；S2, by elastic membrane pressure release on the packer for setting the fracturing section upper end in target hole to non-pressurising state so that remaining ponding is all flowed out along target hole above fracturing section；S3, the water injection pipe being connected on packer is removed.The pressure leak process of this method is divided into pressure release twice, it can guarantee the pressure release work energy complete independently of upper elastic membrane and lower elastic membrane, even if the accumulation water in target hole is in high pressure conditions in lower elastic membrane pressure leak process, also stable state can be kept by upper setting for elastic membrane, to solve the problems, such as pressure release of packer when conventional hydraulic pressure break pressure release and water injection pipe is caused quickly to scurry out.
Description
Technical field
The present invention relates to coal mine roadway equipment technical field more particularly to a kind of hydraulic fracturing pressure releasing methods and device.
Background technique
Coal mine roadway hydraulic fracturing technology has become one that coal mine solves working face initial mining and discharging and workings subject to dy namic pressure release
A important means.Existing hydraulic fracturing technology usually first takes the drilling of one section of exposed bedrock in running, will be upper with packer
Lower both ends seal, and are then injected into liquid, pressurize until cell wall rupture.
Straddle type dilatancy drilling packer is generallyd use in coal mine roadway hydraulic fracturing technology, is advantageously implemented same drilling
Multistage pressure break.Straddle type dilatancy drills packer two elastic membranes same root inflation catheter series control up and down, when pressure release
Two elastic membranes are shunk simultaneously, and pressure release is once completed, but are found in construction at the scene, when packer pressure release to the anhydrous slime flux that drills
After out, when exiting packer, water filling iron pipe sometimes at a terrific speed, huge inertia go out drilling, be inserted directly into
Ground or rebound, harmfulness are very big.
Summary of the invention
(1) technical problems to be solved
The embodiment of the invention provides a kind of hydraulic fracturing pressure releasing method and devices, to solve existing hydraulic fracturing side
It is finished in later pressure leak process in method in interim pressure break, water filling iron pipe is always scurried out with the speed that is exceedingly fast, to cause greatly
The problem of risk.
(2) technical solution
In order to solve the above-mentioned technical problems, the present invention provides a kind of hydraulic fracturing pressure releasing method, this method includes pressure release
Process, the pressure release process the following steps are included:
S1, by elastic membrane pressure release under the packer for setting the fracturing section lower end in target hole to non-pressurising state so that
Ponding in the fracturing section is all flowed out along target hole；
S2, elastic membrane pressure release will be set on the packer of the fracturing section upper end in the target hole to non-pressurising state,
So that remaining ponding is all flowed out along the target hole above the fracturing section；
S3, the water injection pipe being connected on the packer is removed.
In some embodiments, before the pressure release process, this method further includes pressure break process, the pressure break process packet
Include following steps:
N1, the upper elastic membrane of the packer and lower elastic membrane are advanced into respectively in the target hole, until on described
Elastic membrane and lower elastic membrane are located at the both ends of the fracturing section；
It N2, is respectively the upper elastic membrane and the pressurization of lower elastic membrane, so that the upper elastic membrane and lower elastic membrane difference are swollen
It is swollen to set；
Water filling pressurization in N3, Xiang Suoshu fracturing section, the side wall of the fracturing section is pressurized and is cracked.
In some embodiments, the step N3 further comprises:
The water injection pipe is connected to the fracturing section, fills the water pressurization into fracturing section by the water injection pipe.
In some embodiments, the upper elastic membrane and lower elastic membrane are respectively connected with conduit, and the upper elastic membrane is led
It is not connected between pipe and the conduit of the lower elastic membrane, and two conduits are protruding from the target hole respectively.
In some embodiments, the water injection pipe is through in the lower elastic membrane, and is sleeved on the upper elastic membrane
Outside conduit.
In some embodiments, the section of stretching out of the conduit of the upper elastic membrane is equipped with upper shut-off valve.
In some embodiments, the section of stretching out of the conduit of the lower elastic membrane is equipped with lower shut-off valve.
In some embodiments, before the step N1 further include:
N0, the oblique drilling hole in ore bed, to obtain the target hole.
In some embodiments, this method further include:
The pressure break process and pressure release process are sequentially repeatedly recycled, to complete the multiple fracturing work of same target hole.
The present invention also provides a kind of hydraulic fracturing pressure relief devices, comprising:
First pressure relief mechanism, elastic membrane pressure release is not under the packer for that will set the fracturing section lower end in target hole
Pressurising state；
Second pressure relief mechanism, for the elastic membrane pressure release on the packer of the fracturing section upper end in the target hole will to be set
To non-pressurising state；
Drainage mechanism, for drawing the ponding in the target hole；
Mechanism is removed, the water injection pipe for that will be connected on the packer removes.
(3) beneficial effect
Above-mentioned technical proposal of the invention has the advantages that hydraulic fracturing pressure releasing method of the invention includes pressure release
Process, pressure release process the following steps are included: S1, by elastic membrane pressure release under the packer for setting the fracturing section lower end in target hole
To non-pressurising state, so that the ponding in fracturing section is all flowed out along target hole；S2, it will set on the fracturing section in target hole
Elastic membrane pressure release is to non-pressurising state on the packer at end, so that remaining ponding is all flowed out along target hole above fracturing section；
S3, the water injection pipe being connected on packer is removed.This method is finished in interim pressure break in later pressure leak process, point
For pressure release twice, in guarantee the pressure release work of elastic membrane and lower elastic membrane can complete independently, to guarantee to accumulate in target hole
High pressure water can flow out after lower elastic membrane pressure release along hole, even if the accumulation water in target hole is in lower elastic membrane pressure leak process
In high pressure conditions, also stable state can be kept by upper setting for elastic membrane, be unlikely to so that water injection pipe quickly goes out target
Hole and cause equipment damage or injury, pressure release of packer when solving conventional hydraulic pressure break pressure release and cause water injection pipe quick
It scurries out problem, this is because the participation of people is generally required in hydraulic fracturing pressure leak process, and quickly scurrying out for water injection pipe is easily made
At the injury of personnel, hydraulic fracturing pressure releasing method and device of the present invention greatly improve hydraulic fracturing in coal mine operation
The safety of pressure leak process.
On the other hand, when carrying out pressure release using traditional hydraulic fracturing pressure releasing method and device, the phenomenon that water injection pipe is scurried out
It is more, the case where causing a large amount of water injection pipe bending and must not be changed without；Hydraulic fracturing pressure releasing method of the present invention and
Device can effectively control the phenomenon of scurrying out of water injection pipe, reduce material loss.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is the present invention
Some embodiments for those of ordinary skill in the art without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is the flow diagram of pressure release process in the hydraulic fracturing pressure releasing method of the embodiment of the present invention；
Fig. 2 is the flow diagram of pressure break process in the hydraulic fracturing pressure releasing method of the embodiment of the present invention；
Fig. 3 is the structure chart of the hydraulic fracturing pressure relief device of the embodiment of the present invention.
Wherein, 1, upper elastic membrane；2, lower elastic membrane；3, conduit；4, water injection pipe；5, upper shut-off valve；6, lower shut-off valve；7, it presses
Split section.
Specific embodiment
Embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples.Following embodiment is used for
Illustrate the present invention, but cannot be used to limit the scope of the invention.
In the description of the present invention, term " on ", "lower", "left", "right", "inner", "outside", " front end ", " rear end ", " head
The orientation or positional relationship of the instructions such as portion ", " tail portion " is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of retouching
It states the present invention and simplifies description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific
Orientation construction and operation, therefore be not considered as limiting the invention.In addition, term " first ", " second " etc. are only used for
Purpose is described, relative importance is not understood to indicate or imply.
As shown in Figure 1, present embodiments providing a kind of hydraulic fracturing pressure releasing method.This method includes pressure release process, pressure release
Process the following steps are included:
S1, by 2 pressure release of elastic membrane under the packer for setting 7 lower end of the fracturing section in target hole to non-pressurising state, with
Flow out the ponding in fracturing section 7 all along target hole；
S2, by 1 pressure release of elastic membrane on the packer for setting 7 upper end of the fracturing section in target hole to non-pressurising state, with
Flow out the 7 remaining ponding in top of fracturing section all along target hole；
S3, the water injection pipe 4 being connected on packer is removed.
Wherein, packer is preferably straddle type drilling packer, other packers can also be used, as long as guaranteeing pressure break
Section 7 upper and lower ends packing.Packer includes upper elastic membrane 1 and lower elastic membrane 2, and water injection pipe 4 is connect with packer, and and mesh
The fracturing section 7 for marking hole connects, and water injection pipe 4 in upper elastic membrane 1 and lower elastic membrane 2 for setting respectively in 7 upper and lower ends of fracturing section
After, high pressure water is injected into fracturing section 7, thus by the side wall pressure break of fracturing section 7.
In step sl, when the ponding in fracturing section 7 is all flowed out along target hole, upper elastic membrane 1 still in setting state,
The accumulation high pressure water in target hole will not be in no-console condition due to 2 pressure release of lower elastic membrane of packer at this time.
Pressure release process after interim pressure break is divided into two independent blowdown steps by method described in the present embodiment,
To improve the ability that sets of packer, and guarantee that the pressure release work of the upper elastic membrane 1 and lower elastic membrane 2 of packer can be independent complete
At to guarantee that a part of high pressure water accumulated in target hole can flow out after lower 2 pressure release of elastic membrane along hole, even if mesh in this way
It marks the accumulation water in hole and is in high pressure conditions in lower 2 pressure leak process of elastic membrane, it also can setting and keeping by upper elastic membrane 1
Stable state makes water injection pipe 4 quickly go out target without causing hypertonia in target hole after lower 2 pressure release of elastic membrane
Cause equipment damage or injury in hole.
Pressure release of packer when method described in the present embodiment can solve conventional hydraulic pressure break pressure release and cause water injection pipe 4
Quick problem of scurrying out.On the one hand, the participation of people is generally required in hydraulic fracturing pressure leak process, and the pole of quickly scurrying out of water injection pipe 4
The injury of personnel is easily caused, this method greatly improves the safety of hydraulic fracturing pressure leak process in coal mine operation.Another party
Face, when carrying out pressure release using traditional hydraulic fracturing pressure releasing method and device, the phenomenon that water injection pipe 4 is scurried out, is more, causes big
The case where water injection pipe 4 of amount is bent and must not be changed without；And the hydraulic fracturing pressure releasing method and device energy of the embodiment of the present invention
The phenomenon of scurrying out of enough effectively control water injection pipes 4, reduces material loss.
Further, before pressure release process, this method further includes pressure break process.
Specifically, as shown in Fig. 2, pressure break process the following steps are included:
N1, the upper elastic membrane 1 of packer and lower elastic membrane 2 are advanced into target hole simultaneously, until upper elastic membrane 1 is under
Elastic membrane 2 is located at the both ends of fracturing section 7；
It N2, is respectively upper elastic membrane 1 and the pressurization of lower elastic membrane 2, so that upper elastic membrane 1 and lower elastic membrane 2 expand seat respectively
Envelope；
N3, pressurization is filled the water into fracturing section 7, the side wall of fracturing section 7 is pressurized and is cracked.
In above-mentioned pressure break process, before step N1 further include:
N0, the oblique drilling hole in ore bed, to obtain target hole.
In above-mentioned pressure release process and pressure break process, step N3 further comprises:
N31, water injection pipe 4 are connected to fracturing section 7, fill the water pressurization into fracturing section 7 by water injection pipe 4.
In the preferred embodiment of part, upper elastic membrane 1 and lower elastic membrane 2 are respectively connected with conduit 3, pass through two conduits 3
Pressurization or the pressure release from upper elastic membrane 1 and lower elastic membrane 2 respectively in upward elastic membrane 1 and lower elastic membrane 2 can be distinguished.Upper elasticity
It is not connected between the conduit 3 of film 1 and the conduit 3 of lower elastic membrane 2, so as to the pressure process of upper elastic membrane 1 and lower elastic membrane 2 and let out
Pressing through journey is Parallel Control, i.e., the pressure process and pressure leak process of upper elastic membrane 1 and lower elastic membrane 2 can respective complete independently,
The pressurization of two elastic membranes 1,2, which is set, restores non-interference with pressure release.
For the ease of controlling the pressure process and pressure leak process of two elastic membranes 1,2, in the preferred embodiments of part, two
Conduit 3 is protruding from target hole respectively.The section of stretching out of the conduit 3 of upper elastic membrane 1 is equipped with upper shut-off valve 5.Lower elastic membrane 2
The section of stretching out of conduit 3 is equipped with lower shut-off valve 6.It, can be by controlling respectively when carrying out step S1, step S2 or step N2
The open/close states of shut-off valve 5 and lower shut-off valve 6, so that the pressure process and pressure leak process of upper elastic membrane 1 and lower elastic membrane 2
It can respective complete independently.Water injection pipe 4 is and protruding from target hole through in lower elastic membrane 2.Water injection pipe 4 is sleeved on
Outside the conduit 3 of elastic membrane 1, to utilize 4 sets of the water injection pipe intervals by the conduit 3 of upper elastic membrane 1 and the inner cavity of lower elastic membrane 2
From so that the pressurization of two elastic membranes 1,2, which is set, restores non-interference with pressure release.
It will be appreciated that danger is generated in order to avoid there is hypertonia in target hole, it, must in the method for the present embodiment
The upper elastic membrane 1 of packer and lower elastic membrane 2 must clearly be distinguished, forbid first to open upper shut-off valve 5 in pressure release, under rear unlatching
Shut-off valve 6.In other words, forbid first by after upper 1 pressure release of elastic membrane by lower 2 pressure release of elastic membrane, this is because if first by upper elasticity
1 pressure release of film, then splitting pressure section will jointly press to lower elastic membrane 2 with the high pressure water for splitting pressure section top, so as to cause lower 2 mistake of elastic membrane
Amount pressure-bearing and be easy to appear and set failure, when elastic membrane 2 is set unsuccessfully instantly, the excessive high pressure water that is blocked above lower elastic membrane 2
Directly water injection pipe 4 will be gone out, to can all generate danger to operator and equipment.
Further, hydraulic fracturing pressure releasing method described in the present embodiment further include:
Circulation step: pressure break process and pressure release process are sequentially repeatedly recycled, to complete the multiple pressure break of same target hole
Operation.
Due to single pressure break process after can be by pressure release process by the pressure releases of packer, so that mesh
It marks the high pressure water decompression sealed up for safekeeping in hole and is flowed out along hole.The diameter of packer is less than the diameter of target hole, therefore packer pressure release
Restore that artificial removal can be carried out to non-pressurising state and pressurizes again, it is real accordingly hence into the pressure break process of next stage
The multiple safe pressure break of existing same target hole.
Based on above-mentioned hydraulic fracturing pressure relief method, the present embodiment additionally provides a kind of hydraulic fracturing pressure relief device.Such as Fig. 3
Shown, which realizes that the either phase pressure break process in coal mine roadway in hydraulic fracturing finishes with the aforedescribed process
The generation for the unsafe condition for effectively avoiding water injection pipe 4 from scurrying out with the speed that is exceedingly fast in pressure release process afterwards, effectively prevent water injection pipe 4 to penetrate
Equipment damage or other safety accidents are caused out.
Device described in the present embodiment includes the first pressure relief mechanism, the second pressure relief mechanism, drainage mechanism and removes mechanism.The
One pressure relief mechanism is used to set under the packer of 7 lower end of fracturing section in target hole 2 pressure release of elastic membrane to non-pressurising state；
Second pressure relief mechanism is used to set on the packer of 7 upper end of fracturing section in target hole 1 pressure release of elastic membrane to non-pressurising shape
State.First pressure relief mechanism and the second pressure relief mechanism are mutually indepedent, with realize elastic membrane 1 and lower elastic membrane 2 in independent control plus
Press through journey and pressure leak process.Drainage mechanism is used to draw in the ponding in target hole.Mechanism is removed for packer will to be connected to
On water injection pipe 4 remove.
It will be appreciated that water injection pipe 4 is preferably metal tube, to improve bearing strength, iron pipe is used in the present embodiment.Upper bullet
The conduit 3 of property film 1 and the conduit 3 of lower elastic membrane 2 are resin high-pressure pipe.The pressure process of upper elastic membrane 1 and lower elastic membrane 2 and
Pressure leak process can be realized each by force (forcing) pump and pressure release pump.
In conclusion the hydraulic fracturing pressure releasing method of the present embodiment includes pressure release process, pressure release process the following steps are included:
S1, by 2 pressure release of elastic membrane under the packer for setting 7 lower end of the fracturing section in target hole to non-pressurising state so that fracturing section 7
Interior ponding is all flowed out along target hole；S2, elastic membrane 1 on the packer for setting 7 upper end of fracturing section in target hole is let out
It is depressed into non-pressurising state, so that the ponding of 7 top of fracturing section is all flowed out along target hole；S3, the note that will be connected on packer
Water pipe 4 removes.This method is finished in interim pressure break in later pressure leak process, is divided into pressure release twice, elasticity in guarantee
The pressure release work energy complete independently of film 1 and lower elastic membrane 2, to guarantee that the high pressure water accumulated in target hole is let out in lower elastic membrane 2
It can be flowed out along hole after pressure, it, also can be with even if the accumulation water in target hole is in high pressure conditions in lower 2 pressure leak process of elastic membrane
Stable state is kept by means of upper setting for elastic membrane 1, is unlikely to so that water injection pipe 4 quickly goes out target hole and causes equipment damage
Or injury, solve the problems, such as pressure release of packer when conventional hydraulic pressure break pressure release and water injection pipe 4 caused quickly to scurry out, this be by
The participation of people is generally required in hydraulic fracturing pressure leak process, and quickly scurrying out for water injection pipe 4 easily causes the injury of personnel, this
The invention hydraulic fracturing pressure releasing method and device greatly improve the safety of hydraulic fracturing pressure leak process in coal mine operation
Property.
On the other hand, when carrying out pressure release using traditional hydraulic fracturing pressure releasing method and device, the phenomenon that water injection pipe 4 is scurried out
It is more, the case where causing a large amount of bending of water injection pipe 4 and must not be changed without；The hydraulic fracturing pressure release side of the embodiment of the present invention
Method and device can effectively control the phenomenon of scurrying out of water injection pipe 4, reduce material loss.
The embodiment of the present invention is given for the purpose of illustration and description, and is not exhaustively or by this to send out
It is bright to be limited to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.Choosing
Selecting and describe embodiment is and to make those skilled in the art to more preferably illustrate the principle of the present invention and practical application
It will be appreciated that the present invention is to design various embodiments suitable for specific applications with various modifications.
Claims (10)
1. a kind of hydraulic fracturing pressure releasing method, which is characterized in that this method includes pressure release process, and the pressure release process includes following
Step:
S1, by elastic membrane pressure release under the packer for setting the fracturing section lower end in target hole to non-pressurising state so that described
Ponding in fracturing section is all flowed out along target hole；
S2, elastic membrane pressure release will be set on the packer of the fracturing section upper end in the target hole to non-pressurising state, so that
Ponding above the fracturing section is all flowed out along the target hole；
S3, the water injection pipe being connected on the packer is removed.
2. hydraulic fracturing pressure releasing method according to claim 1, which is characterized in that before the pressure release process, the party
Method further includes pressure break process, the pressure break process the following steps are included:
N1, the upper elastic membrane of the packer and lower elastic membrane are advanced into the target hole simultaneously, until the upper elasticity
Film and lower elastic membrane are located at the both ends of the fracturing section；
It N2, is respectively the upper elastic membrane and the pressurization of lower elastic membrane, so that the upper elastic membrane and lower elastic membrane expand seat respectively
Envelope；
Water filling pressurization in N3, Xiang Suoshu fracturing section, the side wall of the fracturing section is pressurized and is cracked.
3. hydraulic fracturing pressure releasing method according to claim 2, which is characterized in that the N3 further comprises:
The water injection pipe is connected to the fracturing section, fills the water pressurization into fracturing section by the water injection pipe.
4. hydraulic fracturing pressure releasing method according to claim 3, which is characterized in that the upper elastic membrane and lower elastic membrane are each
It from conduit is connected with, is not connected between the conduit of the upper elastic membrane and the conduit of the lower elastic membrane, and two conduits are distinguished
It is protruding from the target hole.
5. hydraulic fracturing pressure releasing method according to claim 4, which is characterized in that the water injection pipe is through the lower bullet
In property film, and it is sleeved on outside the conduit of the upper elastic membrane.
6. hydraulic fracturing pressure releasing method according to claim 4, which is characterized in that the stretching of the conduit of the upper elastic membrane
Section is equipped with upper shut-off valve.
7. hydraulic fracturing pressure releasing method according to claim 4, which is characterized in that the stretching of the conduit of the lower elastic membrane
Section is equipped with lower shut-off valve.
8. according to the described in any item hydraulic fracturing pressure releasing methods of claim 2-7, which is characterized in that also wrapped before the N1
Include following steps:
N0, the oblique drilling hole in ore bed, to obtain the target hole.
9. hydraulic fracturing pressure releasing method according to claim 1-7, which is characterized in that this method further include:
The pressure break process and pressure release process are sequentially repeatedly recycled, to complete the multiple fracturing work of same target hole.
10. a kind of hydraulic fracturing pressure relief device characterized by comprising
First pressure relief mechanism, elastic membrane pressure release is to non-pressurising under the packer for that will set the fracturing section lower end in target hole
State；
Second pressure relief mechanism, for elastic membrane pressure release will to be set on the packer of the fracturing section upper end in the target hole to not
Pressurising state；
Drainage mechanism, for drawing the ponding in the target hole；
Mechanism is removed, the water injection pipe for that will be connected on the packer removes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910563633.6A CN110359894B (en) | 2019-06-26 | 2019-06-26 | Hydraulic fracturing pressure relief method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910563633.6A CN110359894B (en) | 2019-06-26 | 2019-06-26 | Hydraulic fracturing pressure relief method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110359894A true CN110359894A (en) | 2019-10-22 |
| CN110359894B CN110359894B (en) | 2021-09-21 |
Family
ID=68217170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910563633.6A Active CN110359894B (en) | 2019-06-26 | 2019-06-26 | Hydraulic fracturing pressure relief method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110359894B (en) |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1239296A1 (en) * | 1984-09-05 | 1986-06-23 | Специальное конструкторское бюро прикладной геофизики СО АН СССР | Apparatus for hydraulic fracturing of wells |
| CN2740777Y (en) * | 2004-09-30 | 2005-11-16 | 中国石化胜利油田有限公司采油工艺研究院 | Layered fracturing tubular column |
| US20050269101A1 (en) * | 2004-06-04 | 2005-12-08 | Halliburton Energy Services | Methods of treating subterranean formations using low-molecular-weight fluids |
| US7134505B2 (en) * | 2001-11-19 | 2006-11-14 | Packers Plus Energy Services Inc. | Method and apparatus for wellbore fluid treatment |
| CN200975248Y (en) * | 2006-12-06 | 2007-11-14 | 吐哈石油勘探开发指挥部钻采工艺研究院 | Fracturing of separate layers technique pipe column |
| CN201723245U (en) * | 2010-05-26 | 2011-01-26 | 义马煤业集团股份有限公司千秋煤矿 | Liquid injection type hole plugging device in gas drainage |
| CN102140900A (en) * | 2011-05-17 | 2011-08-03 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Design method of expanding type anti-sticking packer |
| CN102213077A (en) * | 2011-05-25 | 2011-10-12 | 煤炭科学研究总院沈阳研究院 | Coal seam reaming system using three-dimensional (3D) swirling water jet and reaming and fracturing method for permeability enhancement |
| CN202170806U (en) * | 2011-08-15 | 2012-03-21 | 河南理工大学 | Integrally drilling and permeability-improving device in tectonic coal development area |
| CN102639808A (en) * | 2009-11-20 | 2012-08-15 | 埃克森美孚上游研究公司 | Open-hole packer for alternate path gravel packing, and method for completing an open-hole wellbore |
| CN102704905A (en) * | 2012-06-11 | 2012-10-03 | 煤炭科学研究总院沈阳研究院 | Segmental hydraulic fracturing coal seam pressure releasing device and method |
| CN102852522A (en) * | 2012-04-01 | 2013-01-02 | 天地科技股份有限公司 | Hydraulic fracturing method and device for releasing pressure of coal mine tunnel |
| CN103953317A (en) * | 2014-04-14 | 2014-07-30 | 宝鸡市赛孚石油机械有限公司 | High-reliability hydraulic ejector |
| CA2835128C (en) * | 2011-05-11 | 2015-12-15 | Baski, Inc. | Method and system for fracking anc completing wells |
| CN105178934A (en) * | 2015-09-24 | 2015-12-23 | 中国石油天然气股份有限公司 | Horizontal well throttling-free straddle type double-seal single-clamp fracturing process |
| CN108678721A (en) * | 2018-06-15 | 2018-10-19 | 吕梁学院 | Packaged type hydraulic fracturing and injection hole sealing integrated apparatus and its construction method |
-
2019
- 2019-06-26 CN CN201910563633.6A patent/CN110359894B/en active Active
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1239296A1 (en) * | 1984-09-05 | 1986-06-23 | Специальное конструкторское бюро прикладной геофизики СО АН СССР | Apparatus for hydraulic fracturing of wells |
| US7134505B2 (en) * | 2001-11-19 | 2006-11-14 | Packers Plus Energy Services Inc. | Method and apparatus for wellbore fluid treatment |
| US20050269101A1 (en) * | 2004-06-04 | 2005-12-08 | Halliburton Energy Services | Methods of treating subterranean formations using low-molecular-weight fluids |
| CN2740777Y (en) * | 2004-09-30 | 2005-11-16 | 中国石化胜利油田有限公司采油工艺研究院 | Layered fracturing tubular column |
| CN200975248Y (en) * | 2006-12-06 | 2007-11-14 | 吐哈石油勘探开发指挥部钻采工艺研究院 | Fracturing of separate layers technique pipe column |
| CN102639808A (en) * | 2009-11-20 | 2012-08-15 | 埃克森美孚上游研究公司 | Open-hole packer for alternate path gravel packing, and method for completing an open-hole wellbore |
| CN201723245U (en) * | 2010-05-26 | 2011-01-26 | 义马煤业集团股份有限公司千秋煤矿 | Liquid injection type hole plugging device in gas drainage |
| CA2835128C (en) * | 2011-05-11 | 2015-12-15 | Baski, Inc. | Method and system for fracking anc completing wells |
| CN102140900A (en) * | 2011-05-17 | 2011-08-03 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Design method of expanding type anti-sticking packer |
| CN102213077A (en) * | 2011-05-25 | 2011-10-12 | 煤炭科学研究总院沈阳研究院 | Coal seam reaming system using three-dimensional (3D) swirling water jet and reaming and fracturing method for permeability enhancement |
| CN202170806U (en) * | 2011-08-15 | 2012-03-21 | 河南理工大学 | Integrally drilling and permeability-improving device in tectonic coal development area |
| CN102852522A (en) * | 2012-04-01 | 2013-01-02 | 天地科技股份有限公司 | Hydraulic fracturing method and device for releasing pressure of coal mine tunnel |
| CN102704905A (en) * | 2012-06-11 | 2012-10-03 | 煤炭科学研究总院沈阳研究院 | Segmental hydraulic fracturing coal seam pressure releasing device and method |
| CN103953317A (en) * | 2014-04-14 | 2014-07-30 | 宝鸡市赛孚石油机械有限公司 | High-reliability hydraulic ejector |
| CN105178934A (en) * | 2015-09-24 | 2015-12-23 | 中国石油天然气股份有限公司 | Horizontal well throttling-free straddle type double-seal single-clamp fracturing process |
| CN108678721A (en) * | 2018-06-15 | 2018-10-19 | 吕梁学院 | Packaged type hydraulic fracturing and injection hole sealing integrated apparatus and its construction method |
Non-Patent Citations (2)
| Title |
|---|
| 刘科伟等: "双封拖动分层压裂管柱的研制与应用", 《石油地质与工程》 * |
| 陈文文等: "高阶煤水力压裂负效应分析及改造方法优化", 《煤炭技术》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110359894B (en) | 2021-09-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE102011107835A1 (en) | Pumped-storage power plant installed in e.g. landscape, has lower reservoirs that are arranged in salt dome | |
| CN102704905A (en) | Segmental hydraulic fracturing coal seam pressure releasing device and method | |
| CN107939333B (en) | Multistage pressure-bearing type permeable hole sealing method and device | |
| CN102155251A (en) | Waterpower hole packer | |
| CN106813987B (en) | Gas cylinder low temperature test system | |
| CN208900072U (en) | A kind of novel bag type paste hole packer | |
| CN104153734A (en) | Hydraulic pressure type coring tool | |
| CN204753611U (en) | Deep basal pit pressure -bearing water precipitation gas well gas bag plugging device | |
| CN106285561B (en) | Downhole safety valve system | |
| CN207660586U (en) | From anchoring, the integrated apparatus of self-sealing, high pressure water injection pressure break | |
| CN210798914U (en) | Drilling multi-section plugging, fracturing, grouting and water injection integrated equipment | |
| CN110359894A (en) | A kind of hydraulic fracturing pressure releasing method and device | |
| CN104847324A (en) | Injection-production auxiliary device and injection-production system and method thereof | |
| CN107313472A (en) | Pile for prestressed pipe bearing capacity of pile tip test device and method | |
| CN210068121U (en) | Reusable mining multi-section hydraulic hole sealing fracturing device | |
| CN204572615U (en) | Nitrogen pressurization oil cylinder and pressurizing system thereof | |
| CN108661693B (en) | A kind of multi-stag coal-bed flooding drilling and sealing system and water injecting drilling method for sealing | |
| CN103806889B (en) | Method for infinite-grade chemical layering fracturing or acidizing | |
| CN110761734B (en) | Sealing method of sealing device for drilling high-gas soft coal seam | |
| CN102966329A (en) | Drainage borehole plugging device and method | |
| CN104612625A (en) | Hole sealing device for low-permeability coal bed gas-phase fracturing drilling | |
| CN204113210U (en) | Full well section does not have bridging plug half range cementing tool | |
| CN204457689U (en) | Safe water injection string capable of releasing stuck step by step | |
| CN106677740A (en) | Underground coal mine one-section type water sealing device and sealing method thereof | |
| CN217925805U (en) | Novel mining hole packer capable of relieving pressure and returning water |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |