CN104389563B - Two-layer separate injection process pipe column device for nonmetal continuous oil pipe - Google Patents
Two-layer separate injection process pipe column device for nonmetal continuous oil pipe Download PDFInfo
- Publication number
- CN104389563B CN104389563B CN201410713361.0A CN201410713361A CN104389563B CN 104389563 B CN104389563 B CN 104389563B CN 201410713361 A CN201410713361 A CN 201410713361A CN 104389563 B CN104389563 B CN 104389563B
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- Prior art keywords
- oil pipe
- continuous oil
- non metal
- metal continuous
- waterflood path
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- 238000002347 injection Methods 0.000 title claims abstract description 50
- 239000007924 injection Substances 0.000 title claims abstract description 50
- 229910052755 nonmetal Inorganic materials 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title abstract description 8
- 230000008569 process Effects 0.000 title abstract description 6
- 230000001105 regulatory effect Effects 0.000 claims abstract description 15
- 239000010410 layer Substances 0.000 claims description 17
- 239000011241 protective layer Substances 0.000 claims description 13
- -1 polyethylene Polymers 0.000 claims description 10
- 239000004698 Polyethylene Substances 0.000 claims description 7
- 239000000945 filler Substances 0.000 claims description 7
- 229920000573 polyethylene Polymers 0.000 claims description 7
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 6
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 4
- 229920000459 Nitrile rubber Polymers 0.000 claims description 3
- 238000012856 packing Methods 0.000 claims description 3
- 229920001568 phenolic resin Polymers 0.000 claims description 3
- 229920002554 vinyl polymer Polymers 0.000 claims description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims 1
- 239000010931 gold Substances 0.000 claims 1
- 229910052737 gold Inorganic materials 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 21
- 230000000694 effects Effects 0.000 abstract description 4
- 239000003921 oil Substances 0.000 abstract 4
- 238000000605 extraction Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 12
- 230000033228 biological regulation Effects 0.000 description 8
- 230000001681 protective effect Effects 0.000 description 8
- 239000007788 liquid Substances 0.000 description 7
- 239000011229 interlayer Substances 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 239000002131 composite material Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 108091006146 Channels Proteins 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 102000012002 Aquaporin 4 Human genes 0.000 description 1
- 108010036280 Aquaporin 4 Proteins 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000003643 water by type Substances 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
- E21B43/14—Obtaining from a multiple-zone well
-
- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (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)
- Mechanical Engineering (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention belongs to the technical field of oil and gas industrial oil extraction processes, and particularly relates to a two-layer separate injection process tubular column device for a nonmetal continuous oil pipe. The tubular column device for the nonmetal continuous oil pipe two-layer separate injection process replaces the original process of injecting water by layers by using a water distributor, and has better anticorrosion and antiscaling effects. Because the flow is regulated on the ground, the complicated underground measuring and regulating work is omitted, the underground accidents in the measuring and regulating work are eliminated, and the effective injection amount of each layer is effectively ensured.
Description
Technical field
The invention belongs to industrial gas oil DP technology technical field, and in particular to a kind of non metal continuous oil pipe two
Layer zone separate injection technical string device.
Background technology
To make up the strata pressure decline caused in oil field development exploitation, energy loss, it is necessary to take water filling（Gas）Deng side
Method supplements underground energy, reaches energy balance, keeps strata pressure.In order that each mined bed can keep preferable press water
It is flat, it is necessary to be injected separately into different waters into each substratum that permeability is different, pressure is different, reach oil displacement efficiency in a balanced way and
Recovery percent of reserves.Most widely used in the exploitation of heterogeneous multiple zone is separate zone waterflooding technology, has formed a variety of water injection technologies
Technology and special-purpose assorted instrument.In actual applications, for reach geology injection allocation requirement, it is necessary to each layer carry out injected water volume tune
Section.During regulation must successively pulling instrument, in deep-well, depositing well, the risk of pulling operation is larger.
Although having made some technological improvements on oil well zonal injection technology in recent years, some new technologies, new technology are have developed,
Traditional injection well downhole flow regulator is required for carrying out pulling operation repeatedly to underground mechanism, not only time and effort consuming, increase cost, and underground machine
The unsuccessful situation of pulling operation is caused to happen occasionally after structure corrosion and fouling, so as to substantially prolongs construction period.In layering
In water injection well, the regulation of flow is only temporary regulation, i.e., flow is mixed up in operation, but is treated as after industry terminates, respectively
Layer injection rate can not ensure, the large effect effect of seperated layer water injection.
The country is related to be carried out the patent of water filling with nonmetal flexible multiple tube, but is only limitted to mixed layer water filling, does not apply to
In dispensing.CN202349413U discloses a kind of flexible composite pipe with the case of common non-high pressure, for liquid under low pressure
Conveying；CN202176838U discloses a kind of petroleum gas industrial nonmetal flexible composite high pressure conveyer pipe, for ground
Collection is defeated, and its internal pressure resistance ability preferably, but can not bear excessive pulling force, it is impossible to be used in underground；CN102889437A is public
A kind of nonmetal flexible composite oil pipe for underground of cloth, but and do not specify its application and use ability；
CN202531035U discloses a kind of flow string of application flexibility multiple tube water filling, can preferably solve reinjection well metal oil
The problem of pipe corrodes, but cannot be used in seperated layer water injection.
The content of the invention
The purpose of the present invention be overcome in the prior art that separate water injection well allotment workload is big, allotment is met card and is hampered risk
Greatly, the problem of water injection rate can not ensure after allocating.
Therefore, the invention provides a kind of two layers of zone separate injection technical string device of non metal continuous oil pipe, including nonmetallic company
Continuous oil pipe, injection quantity regulating device, on centrosymmetric first waterflood path of non metal continuous oil pipe and the second waterflood path,
The top of first waterflood path and the second waterflood path is equipped with injection quantity regulating device, and passes through crossover sub and note
Enter quantity regulating device to be connected；
The non metal continuous oil pipe, the first waterflood path and the second waterflood path are polyvinyl piping materials, nonmetallic company
Mixed packing filled with polyethylene filler and tension wire in continuous oil pipe.
The tension wire is distributed in inside polyethylene filler by the way of axial screw.
The tension wire diameter is 1 ~ 1.5mm, and tensile strength is 1t.
The injection quantity regulating device is needle-valve flowmeter.
Protective layer is additionally provided with outside the non metal continuous oil pipe, the protective layer uses the side of absorbing with non metal continuous oil pipe
Formula is cementing to be integrated.
The protective layer thickness is 2 ~ 3mm.
The protective layer is polytetrafluoroethylene (PTFE), phenoplasts or hydrogenated nitrile-butadiene rubber.
The beneficial effects of the invention are as follows：
1st, non metal continuous oil pipe is designed with the passage that liquid passes through, and disclosure satisfy that the injection of two layers of stratified injection well will
Ask, its underpart is protected packer, interlayer packer with set respectively and communicated, and end is respectively connected with leading to two reservoirs.Passage is used
The mode of being pre-machined is manufactured, and can be connected in injection well well head with flow rate test governor motion, be realized the ground test of flow
With regulation；
2nd, the tension wire in non metal continuous oil pipe has stronger tensile capacity, is bearing nonmetallic tubing weight
While, moreover it is possible to the pulling force of extra well head is born, unfreezing, energy can above be carried by strength when meeting card during tubing string use
Enough sets that meets protect packer, the requirement of interlayer removing seal for packer pulling force；
3rd, non metal continuous oil pipe has higher anti-internal pressure capability, internal pre-processed liquid injection channel pressure-bearing
Ability preferably, is adapted to higher well head water injection pressure and uniaxial pressure is poor, functional reliability is preferable；
4th, non metal continuous oil pipe Continuous maching, non metal continuous oil pipe bottom connects downhole tool during individual well operation, on
Portion connects wellhead sealing instrument, passes through the continuous tripping in of rotating disk, it is not necessary to which oil pipe process, operation are wanted in the order as metal oil conduit
Workload is small, personnel labor intensity reduction.
It is described in further details below in conjunction with accompanying drawing.
Brief description of the drawings
Fig. 1 is the sectional view of non metal continuous oil pipe；
Fig. 2 is the well head partial schematic diagram of nonmetallic continuous two layers of the zone separate injection technical string device of pipe of the present invention；
Fig. 3 is the down-hole string partial schematic diagram of nonmetallic continuous two layers of the zone separate injection technical string device of pipe of the present invention.
Description of reference numerals：1st, non metal continuous oil pipe；2nd, quantity regulating device is injected；3rd, the first waterflood path；4th, second
Waterflood path；5th, polyethylene filler；6th, tension wire；7th, protective layer；8th, casing protective packer；9th, reservoir packer；
10th, the first reservoir；11st, the second reservoir；12nd, interlayer；13rd, casing head；14th, sleeve pipe；15th, tubing hanger.
Embodiment
Embodiment 1：
In order to solve that separate water injection well allotment workload in the prior art is big, allotment meets card and is hampered that risk is big, notes after allotment
The problem of water can not ensure, present embodiments provides a kind of two layers of zonal injection technology pipe of non metal continuous oil pipe as shown in Figure 1, 2
On nonmetallic continuous oil in column device, including non metal continuous oil pipe 1, injection quantity regulating device 2, non metal continuous oil pipe 1
The centrosymmetric waterflood path 4 of first waterflood path 3 and second of pipe 1, the waterflood path 4 of the first waterflood path 3 and second
Top is equipped with injection quantity regulating device 2, and is connected by crossover sub with injection quantity regulating device 2.；Injection rate is adjusted
Device 2 is made up of well head flowmeter and metering pin valve, non metal continuous oil pipe 1, the first waterflood path 3 and the second waterflood path 4
It is that polyethylene filler 5 and tension wire 6 are filled with pre-processed polyvinyl piping materials, non metal continuous oil pipe 1
Mixed packing, tension wire 6 is distributed in inside polyethylene filler 5 by the way of axial screw, tension wire 6
A diameter of 1 ~ 1.5mm, tensile strength is 1t.
Protective layer 7 is additionally provided with outside non metal continuous oil pipe 1, protective layer 7 uses with non metal continuous oil pipe 1 and absorbs mode glue
Became one, the thickness of protective layer 7 is 2 ~ 3mm, the material of protective layer 7 is polytetrafluoroethylene (PTFE), phenoplasts or hydrogenated nitrile-butadiene rubber.
Two layers of zone separate injection technical string device of non metal continuous oil pipe of the present invention, replacement is original to be layered with injection well downhole flow regulator
The technique of water filling, with preferable anti-corrosion, anti-scaling action.Because the regulation of flow is carried out on ground, therefore is eliminated numerous and diverse
Downhole measurement adjusting work, eliminate to survey and adjust the down-hole accident that occurs in operation, while the effective injection rate of each layer has been effectively ensured.
Embodiment 2：
On the basis of embodiment 1, the in-site installation and the course of work of the present invention are introduced：
As shown in figure 3, nonmetallic continuous pipe 1 passes through metal crossover sub and tubing hanger 15, casing protective packer 8, storage
Layer packer 9 is connected, and its first internal waterflood path 3, second waterflood path 4 are respectively from casing protective packer 8, reservoir
The inside of packer 9 passes through.Nonmetallic continuous pipe 1 is in contact by connected tubing hanger 15 with casing head 13, utilizes pipe
Post gravity mutually compresses the annular space to be formed and sealed between nonmetallic continuous pipe 1 and sleeve pipe 14.First waterflood path 3, the second note
Aquaporin-4 is connected with injection rate regulation metering device 2 by crossover sub, and injection rate adjusts metering device 2 respectively to first
Reservoir 10, the injected water volume of the second reservoir 11 are controlled and adjusted.
The nonmetallic continuous pipe 1 to be used is determined according to the specific depth of the first reservoir 10, interlayer 12, the second reservoir 11
Length, the specific position of casing protective packer 8 and reservoir packer 9.Such as position of the first reservoir 10 is 2000 meters,
The thickness of interlayer 12 is 20 meters, the position of the second reservoir 11 is 2020 meters, then the length of nonmetallic continuous pipe 1 is at least 2020 meters
More than, during which to consider elongation effect of the nonmetallic continuous pipe 1 under gravity, hydraulic action.Tubing hanger 15 is changed by metal
Joint is connected with the topmost of nonmetallic continuous pipe 1.Casing protective packer 8 and reservoir packer 9 set well liquid hole with
Second waterflood path 4 is connected.The liquid feeding pressure of the second waterflood path 4 makes casing protective packer 8 and reservoir after tubing string G.I.H
Packer 9 is set.Set after end, the first waterflood path 3, the second waterflood path 4 connect with injection rate regulation metering device 2 respectively
After connecting, water filling is carried out by injection allocation requirement.
In summary, the present invention compared with prior art, with advantages below：
1st, non metal continuous oil pipe is designed with the passage that liquid passes through, and disclosure satisfy that the injection of two layers of stratified injection well will
Ask, its underpart is communicated with casing protective packer 8, reservoir packer 9 respectively, and end is respectively connected with leading to two reservoirs.It is logical
Road use is pre-machined mode and manufactured, and can be connected in injection well well head with flow rate test governor motion, realize the ground of flow
Face is tested and regulation；
2nd, the tension wire 6 in non metal continuous oil pipe has stronger tensile capacity, is bearing nonmetallic continuous oil
While 1 weight of pipe, moreover it is possible to bear the pulling force of extra well head, can above it be carried by strength when meeting card during tubing string use
Unfreezing, disclosure satisfy that casing protective packer 8, reservoir packer 9 unseal the requirement of pulling force；
3rd, non metal continuous oil pipe has higher anti-internal pressure capability, internal pre-processed liquid injection channel pressure-bearing
Ability preferably, is adapted to higher well head water injection pressure and uniaxial pressure is poor, functional reliability is preferable；,
4th, non metal continuous oil pipe Continuous maching, non metal continuous oil pipe bottom connects downhole tool during individual well operation, on
Portion connects wellhead sealing instrument, passes through the continuous tripping in of rotating disk, it is not necessary to which oil pipe process, operation are wanted in the order as metal oil conduit
Workload is small, personnel labor intensity reduction.
The technology that the present embodiment is not described in detail belongs to the known technology or common technology of the industry, does not chat one by one here
State.
It is exemplified as above be only to the present invention for example, do not constitute the limitation to protection scope of the present invention, it is all
It is to be belonged to the same or analogous design of the present invention within protection scope of the present invention.
Claims (1)
1. a kind of two layers of zone separate injection technical string device of non metal continuous oil pipe, it is characterised in that：Including non metal continuous oil pipe
（1）, injection quantity regulating device（2）, the non metal continuous oil pipe（1）It is interior to be provided with non metal continuous oil pipe (1) center pair
The first waterflood path claimed（3）With the second waterflood path（4）, first waterflood path（3）With the second waterflood path（4）Beginning
End is equipped with injection quantity regulating device（2）, and pass through crossover sub and injection quantity regulating device（2）It is connected；The non-gold
Belong to coiled tubing（1）, the first waterflood path（3）With the second waterflood path（4）It is polyvinyl piping materials, non metal continuous oil pipe
（1）It is interior to be filled with polyethylene filler（5）With tension wire（6）Mixed packing；The tension wire（6）Using axle
Polyethylene filler is distributed in the mode of spiral（5）It is internal；The tension wire（6）A diameter of 1 ~ 1.5mm, tensile strength
For 1t；The injection quantity regulating device（2）For needle-valve flowmeter；The non metal continuous oil pipe（1）It is additionally provided with protective layer outside
（7）, the protective layer（7）With non metal continuous oil pipe（1）It is integrated using the mode that absorbs is cementing；The protective layer（7）Thickness
For 2 ~ 3mm；The protective layer（7）For polytetrafluoroethylene (PTFE), phenoplasts or hydrogenated nitrile-butadiene rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410713361.0A CN104389563B (en) | 2014-12-01 | 2014-12-01 | Two-layer separate injection process pipe column device for nonmetal continuous oil pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410713361.0A CN104389563B (en) | 2014-12-01 | 2014-12-01 | Two-layer separate injection process pipe column device for nonmetal continuous oil pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104389563A CN104389563A (en) | 2015-03-04 |
| CN104389563B true CN104389563B (en) | 2017-08-04 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410713361.0A Active CN104389563B (en) | 2014-12-01 | 2014-12-01 | Two-layer separate injection process pipe column device for nonmetal continuous oil pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104389563B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104912530B (en) * | 2015-03-07 | 2017-10-10 | 东营天华石油技术开发有限公司 | A kind of coiled tubing underground multielement hot fluid generating means |
| CN107587848B (en) * | 2017-09-30 | 2023-07-14 | 河北华通线缆集团股份有限公司 | Multi-channel pipe and method for layered gas production by using same |
| CN110965950B (en) * | 2018-09-29 | 2021-07-30 | 中国石油天然气股份有限公司 | Ground separate injection process pipe column for special-shaped continuous oil pipe |
| CN115182709B (en) * | 2021-04-06 | 2024-06-25 | 中国石油天然气股份有限公司 | Three-pipe separate-layer water injection pipe column and use method |
| CN114575804A (en) * | 2022-02-09 | 2022-06-03 | 中海油能源发展股份有限公司 | Multi-layer pipe column capable of being used for underground layering, quality-based and partial-pressure injection |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2110659C (en) * | 1992-12-04 | 1996-11-12 | Frank J. Schuh | Viscid oil well completion |
| CN1831291A (en) * | 2006-04-19 | 2006-09-13 | 李诗春 | Continuous strenth compound tube for oil production of oil field and its production technology |
| CN102337873B (en) * | 2011-09-01 | 2014-09-17 | 中国石油天然气股份有限公司 | Multi-channel separate injection pipe column for oil pipe of polymer |
| CN102889437B (en) * | 2012-10-08 | 2015-11-11 | 孟庆义 | A kind of flexible compound oil pipe |
| CN204371263U (en) * | 2014-12-01 | 2015-06-03 | 中国石油天然气股份有限公司 | Two-layer separate injection process pipe column device for nonmetal continuous oil pipe |
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- 2014-12-01 CN CN201410713361.0A patent/CN104389563B/en active Active
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