CN109252834A - The concentric long-acting layered water filler of binary channels and method - Google Patents
The concentric long-acting layered water filler of binary channels and method Download PDFInfo
- Publication number
- CN109252834A CN109252834A CN201710572778.3A CN201710572778A CN109252834A CN 109252834 A CN109252834 A CN 109252834A CN 201710572778 A CN201710572778 A CN 201710572778A CN 109252834 A CN109252834 A CN 109252834A
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- locking
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 42
- 239000000945 filler Substances 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000002347 injection Methods 0.000 claims abstract description 48
- 239000007924 injection Substances 0.000 claims abstract description 48
- 238000011010 flushing procedure Methods 0.000 claims abstract description 22
- 238000012856 packing Methods 0.000 claims description 26
- 238000007789 sealing Methods 0.000 claims description 20
- 210000002445 nipple Anatomy 0.000 claims description 14
- 239000012530 fluid Substances 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 3
- 239000010410 layer Substances 0.000 abstract description 9
- 239000004576 sand Substances 0.000 abstract description 7
- 239000011229 interlayer Substances 0.000 abstract description 4
- 238000007689 inspection Methods 0.000 abstract description 2
- 230000007774 longterm Effects 0.000 abstract description 2
- 238000009825 accumulation Methods 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000008569 process 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/20—Displacing by water
-
- 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
- E21B33/126—Packers; Plugs with fluid-pressure-operated elastic cup or skirt
-
- 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
- E21B43/14—Obtaining from a multiple-zone well
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)
Abstract
The invention discloses the long-acting layered water filler of concentric binary channels and methods, wherein device include from top to bottom anti-return of sequentially connected deblocking controller, the self-locking amplificate packer of the first bridge-type, the first bridge-type spit injection well downhole flow regulator, the self-locking amplificate packer of the second bridge-type, the second bridge-type and prevent returning spitting injection well downhole flow regulator, wherein anti-return of the first bridge-type spits injection well downhole flow regulator positioned at the first water filling layer, and anti-return of the second bridge-type spits injection well downhole flow regulator positioned at the second water filling layer.Anti- return of second bridge-type spits injection well downhole flow regulator bottom end connection flushing valve.Packer does not unseal when stopping note, and interlayer pressure difference will not lead to removing seal for packer, is unsealed using anti-flushing well or rotating forward tubing string.Stratum is returned and spits the problem of causing sand pipe laying column during stopping note the invention avoids loose sand oil accumulation, to extending tubing string validity period, meet long-term injection allocation and later period inspection changes safety and is of great significance.
Description
Technical field
Be layered injection technique the present invention relates to oil-field flooding, the long-acting layered water filler of specifically concentric binary channels and
Method.
Background technique
Shallow-layer middle and high infiltration well reservoir loose cementation, near wellbore zone forms higher-pressure region in the injecting process, stops easily causing when note
Formation sand production leads to pit shaft and tubing string building up inside reservoir sand, causes water injection well to be shorted, surveys tune failure or even cause overhaul and make
Industry.Such Oil Reservoir Types is layered frequently with inflatable packer zonal injection technology, the technique using amplificate packer, injection well downhole flow regulator
With flushing valve using single stream design.Amplificate packer stops explaining envelope, and the big well of interlayer pressure, reservoir properties difference is easy when stopping note
High pressure zone is caused to return to spit and alter layer, tubing string is buried.
Summary of the invention
The purpose of the present invention is to provide the long-acting layered water filler of concentric binary channels and method, stops packer when note and do not understand
Envelope, interlayer pressure difference will not lead to removing seal for packer, be unsealed using anti-flushing well or rotating forward tubing string.The invention avoids dredge
Stratum is returned and spits the problem of causing sand pipe laying column during loose sandstone oil reservoir stops note, to extending tubing string validity period, meet long-term injection allocation
Safety is changed with later period inspection to be of great significance.
In order to achieve the above objectives, present invention employs following technical solution, the concentric long-acting layered water filler of binary channels,
Including sequentially connected deblocking controller from top to bottom, the self-locking amplificate packer of the first bridge-type, the first bridge-type it is anti-return spit injection well downhole flow regulator,
Anti- return of the self-locking amplificate packer of second bridge-type, the second bridge-type spits injection well downhole flow regulator, wherein anti-return of the first bridge-type spits injection well downhole flow regulator positioned at first
Layer is filled the water, anti-return of the second bridge-type spits injection well downhole flow regulator positioned at the second water filling layer.
Anti- return of second bridge-type spits injection well downhole flow regulator bottom end connection flushing valve.
The deblocking controller includes top connection 101, sealing ring 102, deblocking piston 103, spring 104 and lower contact
105.Top connection 101 is connected through a screw thread with lower contact 105, and sealing ring 102 is placed in deblocking 103 end of piston；Unseal piston
103, spring 104 is sequentially installed in the annular space between top connection 101 and lower contact 105.
The self-locking amplificate packer of bridge-type includes top connection 201, exterior central tube 202, inner central tube 203, deblocking piston
204, pressure ring 205, stopper 206, bridge-type pipe nipple 207, sealing ring 208, spring 209, gear bowl 210, packing element 211 and lower contact 212.
Top connection 201 is connected through a screw thread with exterior central tube 202；202 lower end of exterior central tube is connected through a screw thread with lower contact 213；Bridge
207 inner and outer ends of formula pipe nipple weld together respectively at inner central tube 203, exterior central tube 202；Deblocking piston 204 is placed in outer
In annular space between heart pipe 202 and top connection 201；205 upper and lower end portion of pressure ring is respectively placed in exterior central tube 202 and stopper
206, exterior central tube 202 and gear bowl 210 are formed by annular space, and stopper 206 passes through with top connection 201, gear bowl 210 respectively
It is threadedly coupled；Sealing ring 209 is placed in the end of pressure ring 205；Spring 209 is placed in exterior central tube 202 and gear bowl 210 is formed by ring
In shape space；Packing element 211 is placed in outside exterior central tube 202, and upper and lower ends pass through screw thread with gear bowl 210, lower contact 211 respectively
Connection.
The bridge-type is anti-to be returned and spits injection well downhole flow regulator and include top connection 301, exterior central tube 302, spring 303, inner central tube 304, go out
Water piston 305, bridge-type pipe nipple 306 and stopper 307.Top connection 301 is connected through a screw thread with exterior central tube 302；Exterior central tube 302
Lower end be connected through a screw thread with stopper 307；Spring 303 is placed in outside exterior central tube 302, and sequentially install out water piston 305,
Stopper 307；306 inner and outer ends of bridge-type pipe nipple weld together respectively at inner central tube 304, exterior central tube 302.
In order to reach above-mentioned another object, present invention employs following technical solution, the concentric long-acting seperated layer water injection of binary channels
Method, injection water is flow on the self-locking amplificate packer of bridge-type through oil pipe sets pressure transmission hole, makes packing element using hydraulic
It completes to set in bulging to casing；Injection water returns the waterflood path spat on injection well downhole flow regulator through bridge-type is anti-, overcomes spring pressure using hydraulic
Clamp force, which pushes piston open and enters oil jacket annulus, finally injects stratum；Stop pressure reduction in tubing string, the self-locking amplificate packer of bridge-type after infusing
Self-locking piston closed under the action of hydraulic coupling in self-locking spring and packing element, make packing element inner cavity sealing high-pressure liquid always, really
Guarantor's packing element is under lower pressure in tubing string sets state.
It is suppressed from oil jacket annulus, the fluid diversion hole that pressure fluid flows on deblocking controller overcomes the compression bullet installed in it
Spring simultaneously pushes sealing piston open, prevents returning the interior center for spitting injection well downhole flow regulator by deblocking controller, the self-locking amplificate packer of bridge-type and bridge-type
The local annulus access that pipe is formed with housing, pressure is transmitted to by the deblocking pressure transmission hole of the self-locking amplificate packer of bridge-types at different levels
On self-locking piston, overcomes self-locking spring pressing force to open self-locking piston and lay down the high-pressure fluid of packing element inner cavity, packing element returns automatically
It receives, completes deblocking.
It is counter suppress deblocking packer after, continue reacting cycle well-flushing, the annular space that flushing fluid is formed through tubing string and casing is to flowing down
Dynamic, the well-flushing passage through flushing valve, which enters, returns to ground inside tubing string.
Compared to the prior art, the invention has the following advantages:
1, controller, packer, injection well downhole flow regulator are unsealed and uses concentric channel structure, internal channel sets and fills the water, and annular space is logical
Road deblocking packer；
2, using enclosed self-locking formula demixing technology, packer is not unsealed after stopping note, and stratum high pressure and interlayer interference will not make
At deblocking, deblocking is suppressed by reversed；
3, injection well downhole flow regulator and flushing valve are designed using one-way flow, and formation fluid can not enter and leave pit shaft and enter tubing string after stopping note
It is internal.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the long-acting layered water filler of the concentric binary channels of the present invention；
Fig. 2 is deblocking controller architecture cross-sectional view；
Fig. 3 is the self-locking amplificate packer structure sectional view of bridge-type；
Fig. 4 is Fig. 3 partial enlarged view；
Fig. 5 is that anti-return of bridge-type spits injection well downhole flow regulator structure sectional view.
In Fig. 1: anti-return of deblocking controller 1, the self-locking amplificate packer 2 of bridge-type, bridge-type spits injection well downhole flow regulator 3, flushing valve 4.
In Fig. 2: top connection 101, sealing ring 102, deblocking piston 103, spring 104, lower contact 105.
In Fig. 3: top connection 201, exterior central tube 202, inner central tube 203, deblocking piston 204, pressure ring 205, stopper 206,
Bridge-type pipe nipple 207, sealing ring 208, spring 209, gear bowl 210, packing element 211, lower contact 212；
In Fig. 4: top connection 301, spring 303, inner central tube 304, goes out water piston 305, bridge-type pipe nipple at exterior central tube 302
306, stopper 307.
Specific embodiment
Detailed description for the present invention and technology contents, cooperation Detailed description of the invention it is as follows, however attached drawing only provides reference with
Purposes of discussion is not intended to limit the present invention.
According to Fig. 1 to Fig. 5, the concentric long-acting layered water filler of binary channels, including sequentially connected solution is sealed from top to bottom
Anti- return of device 1 processed, the self-locking amplificate packer of the first bridge-type, the first bridge-type spits injection well downhole flow regulator, the self-locking amplificate packer of the second bridge-type, second
Anti- return of bridge-type spits injection well downhole flow regulator, wherein anti-return of the first bridge-type spits injection well downhole flow regulator positioned at the first water filling layer, anti-return of the second bridge-type spits injection well downhole flow regulator
Positioned at the second water filling layer.Anti- return of second bridge-type spits injection well downhole flow regulator bottom end connection flushing valve.
The deblocking controller includes top connection 101, sealing ring 102, deblocking piston 103, spring 104 and lower contact
105.Top connection 101 is connected through a screw thread with lower contact 105, and sealing ring 102 is placed in deblocking 103 end of piston；Unseal piston
103, spring 104 is sequentially installed in the annular space between top connection 101 and lower contact 105.
The self-locking amplificate packer of bridge-type includes top connection 201, exterior central tube 202, inner central tube 203, deblocking piston
204, pressure ring 205, stopper 206, bridge-type pipe nipple 207, sealing ring 208, spring 209, gear bowl 210, packing element 211 and lower contact 212.
Top connection 201 is connected through a screw thread with exterior central tube 202；202 lower end of exterior central tube is connected through a screw thread with lower contact 213；Bridge
207 inner and outer ends of formula pipe nipple weld together respectively at inner central tube 203, exterior central tube 202；Deblocking piston 204 is placed in outer
In annular space between heart pipe 202 and top connection 201；205 upper and lower end portion of pressure ring is respectively placed in exterior central tube 202 and stopper
206, exterior central tube 202 and gear bowl 210 are formed by annular space, and stopper 206 passes through with top connection 201, gear bowl 210 respectively
It is threadedly coupled；Sealing ring 209 is placed in the end of pressure ring 205；Spring 209 is placed in exterior central tube 202 and gear bowl 210 is formed by ring
In shape space；Packing element 211 is placed in outside exterior central tube 202, and upper and lower ends pass through screw thread with gear bowl 210, lower contact 211 respectively
Connection.
Bridge-type is anti-to return that spit injection well downhole flow regulator include that top connection 301, exterior central tube 302, spring 303, inner central tube 304, water outlet are lived
Plug 305, bridge-type pipe nipple 306 and stopper 307.Top connection 301 is connected through a screw thread with exterior central tube 302；Under exterior central tube 302
End is connected through a screw thread with stopper 307；Spring 303 is placed in outside exterior central tube 302, and sequentially installs out water piston 305, stopper
307；306 inner and outer ends of bridge-type pipe nipple weld together respectively at inner central tube 304, exterior central tube 302.
Set and fill the water: injection water is flow on the self-locking amplificate packer 2 of bridge-type through oil pipe sets pressure transmission hole, utilizes liquid
Pressure makes to complete to set in packing element bulging to casing；Injection water returns the waterflood path spat on injection well downhole flow regulator 3 through bridge-type is anti-, utilizes
It is hydraulic to overcome pressing force of the spring to push piston open and enter oil jacket annulus finally to inject stratum.It is self-locking: stop pressure reduction in tubing string after infusing,
The self-locking piston of the self-locking amplificate packer 2 of bridge-type is closed under the action of hydraulic coupling in self-locking spring and packing element, makes packing element inner cavity
Always sealing high-pressure liquid, it is ensured that packing element is under lower pressure in tubing string and sets state.
Deblocking: suppressing from oil jacket annulus, and the fluid diversion hole that pressure fluid flows on deblocking controller 1 overcomes installation in it
Holddown spring simultaneously pushes sealing piston open, spits injection well downhole flow regulator 3 by deblocking controller 1, the self-locking amplificate packer 2 of bridge-type and anti-return of bridge-type
Inner central tube and the local annulus access that is formed of housing, pressure is passed through into the deblocking of the self-locking amplificate packer 2 of bridge-types at different levels biography
Pressure hole is transmitted on self-locking piston, is overcome self-locking spring pressing force to open self-locking piston and is laid down the high-pressure fluid of packing element inner cavity,
Packing element recycles automatically, completes deblocking.
Well-flushing: it is counter suppress deblocking packer after, continue reacting cycle well-flushing, the annular space that flushing fluid is formed through tubing string and casing to
Lower flowing, the well-flushing passage through flushing valve 4, which enters, returns to ground inside tubing string.
The present invention has stronger adaptability in sand output well, controls removing seal for packer using independent deblocking channel, effectively
It avoids formation sand production when stopping note and causes pipe laying column, be measured and tuned into power with important meaning to extending tubing string dispensing validity period, improving
Justice.
The foregoing is merely presently preferred embodiments of the present invention, non-to limit the scope of the patents of the invention, other are with this
The equivalence changes of the patent spirit of invention should all belong to the scope of the patents of the invention.
Claims (8)
1. the concentric long-acting layered water filler of binary channels, which is characterized in that including sequentially connected deblocking controller from top to bottom,
The self-locking amplificate packer of first bridge-type, the first bridge-type be anti-to return that spit injection well downhole flow regulator, the self-locking amplificate packer of the second bridge-type, the second bridge-type anti-
It returns and spits injection well downhole flow regulator, wherein anti-return of the first bridge-type spits injection well downhole flow regulator positioned at the first water filling layer, the second bridge-type is anti-to be returned and spit injection well downhole flow regulator and be located at the
Two water filling layers.
2. the long-acting layered water filler of concentric binary channels according to claim 1, which is characterized in that second bridge-type is anti-
It returns and spits injection well downhole flow regulator bottom end connection flushing valve.
3. the long-acting layered water filler of concentric binary channels according to claim 1, which is characterized in that the deblocking controller
Including top connection, sealing ring, deblocking piston, spring, lower contact, top connection is connected through a screw thread with lower contact, and sealing ring is placed in
Unseal pistons end；Deblocking piston, spring are sequentially installed in the annular space between top connection and lower contact.
4. the long-acting layered water filler of concentric binary channels according to claim 1, which is characterized in that the self-locking expansion of bridge-type
Packer include top connection, exterior central tube, inner central tube, deblocking piston, pressure ring, stopper, bridge-type pipe nipple, sealing ring, spring,
Keep off bowl, packing element and lower contact；Top connection is connected through a screw thread with exterior central tube；Exterior central tube lower end and lower contact are connected by screw thread
It connects；Bridge-type pipe nipple inner and outer ends weld together respectively at inner central tube, exterior central tube；Deblocking piston be placed in exterior central tube with it is upper
In annular space between connector；Pressure ring upper end is placed in exterior central tube and stopper is formed by annular space, inner pressure ring lower end
Portion is placed in exterior central tube and gear bowl is formed by annular space, and stopper is connected through a screw thread with top connection, gear bowl respectively；Sealing
Ring is placed in the end of pressure ring；Spring is placed in exterior central tube and gear bowl is formed by annular space；Packing element is placed in outside exterior central tube
Portion, and upper and lower ends are connected through a screw thread with gear bowl, lower contact respectively.
5. the long-acting layered water filler of concentric binary channels according to claim 1, which is characterized in that anti-return of bridge-type spits water distribution
Device includes top connection, exterior central tube, spring, inner central tube, goes out water piston, bridge-type pipe nipple and stopper；Top connection and exterior central tube
It is connected through a screw thread；The lower end of exterior central tube is connected through a screw thread with stopper；Spring is placed in outside exterior central tube, and is sequentially installed
Water piston, stopper out；Bridge-type pipe nipple inner and outer ends weld together respectively at inner central tube, exterior central tube.
6. the concentric long-acting layered water injection method of binary channels, which is characterized in that injection water flow to the self-locking expansion of bridge-type through oil pipe and seals
Every setting pressure transmission hole on device, make to complete to set in packing element bulging to casing using hydraulic；Injection water is returned through bridge-type is anti-
The waterflood path on injection well downhole flow regulator is spat, overcomes pressing force of the spring to push piston open and enter oil jacket annulus finally to inject stratum using hydraulic；
Stop pressure reduction in tubing string, the work of self-locking piston hydraulic coupling in self-locking spring and packing element of the self-locking amplificate packer of bridge-type after infusing
With lower closing, make packing element inner cavity sealing high-pressure liquid always, it is ensured that packing element is under lower pressure in tubing string and sets state.
7. the long-acting layered water injection method of concentric binary channels according to claim 6, which is characterized in that beaten from oil jacket annulus
Pressure, the fluid diversion hole that pressure fluid flows on deblocking controller overcome the holddown spring installed in it and push sealing piston open, lead to
Cross deblocking controller, the self-locking amplificate packer of bridge-type and the anti-local ring for returning the inner central tube for spitting injection well downhole flow regulator and housing and being formed of bridge-type
Pressure is transmitted on self-locking piston by the deblocking pressure transmission hole of the self-locking amplificate packer of bridge-types at different levels, is overcome self-locking by empty channel
Pressing force of the spring opens self-locking piston and lays down the high-pressure fluid of packing element inner cavity, and packing element recycles automatically, completes deblocking.
8. the long-acting layered water injection method of concentric binary channels according to claim 7, which is characterized in that counter to suppress deblocking packing
After device, continue reacting cycle well-flushing, the annular space that flushing fluid is formed through tubing string with casing flows downward, the well-flushing passage through flushing valve into
Enter and returns to ground inside tubing string.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710572778.3A CN109252834B (en) | 2017-07-13 | 2017-07-13 | Concentric double-channel long-acting layered water injection device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710572778.3A CN109252834B (en) | 2017-07-13 | 2017-07-13 | Concentric double-channel long-acting layered water injection device and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109252834A true CN109252834A (en) | 2019-01-22 |
| CN109252834B CN109252834B (en) | 2024-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710572778.3A Active CN109252834B (en) | 2017-07-13 | 2017-07-13 | Concentric double-channel long-acting layered water injection device and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111396008A (en) * | 2020-04-14 | 2020-07-10 | 山东大东联石油设备有限公司 | Small-diameter separate-layer sand-prevention water-injection whole-well backwashing integrated tubular column and method |
| CN112012703A (en) * | 2019-05-29 | 2020-12-01 | 中国海洋石油集团有限公司 | Layer-by-layer fixed-point fluid injection device and injection method |
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