CN104389563A - 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
- CN104389563A CN104389563A CN201410713361.0A CN201410713361A CN104389563A CN 104389563 A CN104389563 A CN 104389563A CN 201410713361 A CN201410713361 A CN 201410713361A CN 104389563 A CN104389563 A CN 104389563A
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- CN
- China
- Prior art keywords
- oil pipe
- continuous oil
- non metal
- metal continuous
- separate injection
- 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
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- 229910052755 nonmetal Inorganic materials 0.000 title claims abstract description 61
- 238000002347 injection Methods 0.000 title claims abstract description 60
- 239000007924 injection Substances 0.000 title claims abstract description 60
- 238000000034 method Methods 0.000 title abstract description 8
- -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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 21
- 230000000694 effects Effects 0.000 abstract description 3
- 239000003921 oil Substances 0.000 abstract 4
- 230000001105 regulatory effect Effects 0.000 abstract 3
- 238000000605 extraction Methods 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 17
- 238000005516 engineering process Methods 0.000 description 11
- 230000001681 protective effect Effects 0.000 description 8
- 239000011229 interlayer Substances 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 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
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 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
- 239000011241 protective layer Substances 0.000 description 1
- 238000011084 recovery Methods 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 oil production technology technical field, be specifically related to the two-layer zone separate injection technical string device of a kind of non metal continuous oil pipe.
Background technology
In order to make up, the strata pressure caused in oil field development exploitation declines, energy loss, needs to take the methods such as water filling (gas) to carry out supplementary underground energy, reaches energy balance, retentively stressor layer.In order to make each mined bed can keep good stress level, needing to inject the different water yields respectively in different to permeability, that pressure is different each substratum, reaching balanced oil displacement efficiency and recovery percent of reserves.Most widely used in the exploitation of heterogeneous body multiple zone is separate zone waterflooding technology, has now formed multiple water injection technology technology and special-purpose assorted instrument.In actual applications, for reaching geology injection allocation requirement, need to carry out injected water volume adjustment to each layer.Must successively pulling instrument during adjustment, in deep-well, depositing well, the risk of pulling operation is larger.
Although done some technological improvements in recent years on oil well zonal injection technology, have developed some new technologies, new technology, but traditional injection well downhole flow regulator all needs to carry out pulling operation repeatedly to down-hole mechanism, not only time and effort consuming, increase cost, and cause the unsuccessful situation of pulling operation to happen occasionally after the corrosion of down-hole mechanism and fouling, thus substantially prolongs construction period.In separate water injection well, the adjustment of flow is only temporary adjustment, namely when operation, flow is mixed up, but when after the end of job, each layer injection rate cannot ensure, the larger effect that have impact on seperated layer water injection.
The domestic patent had about carrying out water filling with nonmetal flexible clad pipe, but be only limitted to mixed layer water filling, be not suitable for dispensing.CN202349413U discloses a kind of with the flexible composite pipe under common non-high-pressure situations, for the conveying of liquid under low pressure; CN202176838U discloses a kind of petroleum gas industrial nonmetal flexible composite high pressure conveyer pipe, and for surface gathering and transferring, its internal pressure resistance ability is better, but can not bear excessive pulling force, cannot use in down-hole; CN102889437A discloses a kind of nonmetal flexible composite oil pipe for down-hole, but and its range of application undeclared and use ability; CN202531035U discloses the flow string of a kind of application flexibility clad pipe water filling, can solve the problem of reinjection well metal oil conduit corrosion preferably, but can not be used in seperated layer water injection.
Summary of the invention
The object of the invention is to overcome that the allotment of separate water injection well in prior art workload is large, allotment meets card and be hampered and have a big risk, allocate the problem that rear water injection rate cannot ensure.
For this reason, the invention provides the two-layer zone separate injection technical string device of a kind of non metal continuous oil pipe, comprise non metal continuous oil pipe, injection rate adjusting device, about centrosymmetric first waterflood path of non metal continuous oil pipe and the second waterflood path, the top of described first waterflood path and the second waterflood path is equipped with injection rate adjusting device, and is all connected with injection rate adjusting device by crossover sub;
Described non metal continuous oil pipe, the first waterflood path and the second waterflood path are polyvinyl piping materials, are filled with polyethylene filler and tension mixed packing wiry in non metal continuous oil pipe.
It is inner that described tension wire adopts the mode of axial screw to be distributed in polyethylene filler.
Described tension wire diameter is 1 ~ 1.5mm, and tensile strength is 1t.
Described injection rate adjusting device is needle-valve flow meter.
Described non metal continuous oil pipe is also provided with topping outward, and described topping and non metal continuous oil pipe adopt that the mode that absorbs is cementing to be integrated.
Described protective layer thickness is 2 ~ 3mm.
Described topping is polytetrafluoroethylene (PTFE), phenoplasts or hydrogenated nitrile-butadiene rubber.
The invention has the beneficial effects as follows:
1, non metal continuous oil pipe is designed with the passage that liquid passes through, and can meet the injection requirement of two-layer stratified injection well, and packer is protected with cover respectively in its underpart, interlayer packer communicates, and end is connected respectively with two reservoirs.Passage adopts processing mode manufacture in advance, can be connected at Injection Well well head with flow rate test governor motion, realizes ground test and the adjustment of flow;
2, the tension wire in non metal continuous oil pipe has stronger resistance to tension, while bearing nonmetal tubing weight, the pulling force of extra well head can also be born, by brute force proposes unfreezing, the requirement that cover protects packer, interlayer removing seal for packer pulling force can be met when meeting card in tubing string use procedure;
3, non metal continuous oil pipe has higher anti-internal pressure capability, and inner pre-processed liquid injection channel bearing capacity is better, be adapted to higher well head water injection pressure and uniaxial pressure poor, functional reliability is better;
4, non metal continuous oil pipe Continuous maching, non metal continuous oil pipe bottom connecting downhole instrument during individual well operation, top connects well head sealing tool, enter under continuous by rotating disk, do not need the order as metal oil conduit to want oil pipe operation, work operations amount is little, and personnel labor intensity reduces.
Be described in further details below in conjunction with accompanying drawing.
Accompanying drawing explanation
Fig. 1 is the sectional view of non metal continuous oil pipe;
Fig. 2 is the well head partial schematic diagram of the two-layer zone separate injection technical string device of the nonmetal continuous-tube of the present invention;
Fig. 3 is the down-hole string partial schematic diagram of the two-layer zone separate injection technical string device of the nonmetal continuous-tube of the present invention.
Description of reference numerals: 1, non metal continuous oil pipe; 2, injection rate adjusting device; 3, the first waterflood path; 4, the second waterflood path; 5, polyethylene filler; 6, tension wire; 7, topping; 8, casing protective packer; 9, reservoir packer; 10, the first reservoir; 11, the second reservoir; 12, interlayer; 13, casing head; 14, sleeve pipe; 15, tubing hanger.
Detailed description of the invention
Embodiment 1:
Large in order to solve separate water injection well allotment workload in prior art, allotment chance card is hampered and has a big risk, the problem that after allotment, water injection rate cannot ensure, present embodiments provide a kind of as Fig. 1, the two-layer zone separate injection technical string device of non metal continuous oil pipe shown in 2, comprise non metal continuous oil pipe 1, injection rate adjusting device 2, about centrosymmetric first waterflood path 3 and the second waterflood path 4 of non metal continuous oil pipe 1 in non metal continuous oil pipe 1, the top of described first waterflood path 3 and the second waterflood path 4 is equipped with injection rate adjusting device 2, and be all connected with injection rate adjusting device 2 by crossover sub.; Injection rate adjusting device 2 is made up of well head flow meter and metering pin valve, non metal continuous oil pipe 1, first waterflood path 3 and the second waterflood path 4 are pre-processed polyvinyl piping materials, the mixed packing of polyethylene filler 5 and tension wire 6 is filled with in non metal continuous oil pipe 1, it is inner that tension wire 6 adopts the mode of axial screw to be distributed in polyethylene filler 5, tension wire 6 diameter is 1 ~ 1.5mm, and tensile strength is 1t.
Non metal continuous oil pipe 1 is outer is also provided with topping 7, and topping 7 and non metal continuous oil pipe 1 adopt that the mode that absorbs is cementing to be integrated, and topping 7 thickness is 2 ~ 3mm, and topping 7 material is polytetrafluoroethylene (PTFE), phenoplasts or hydrogenated nitrile-butadiene rubber.
The two-layer zone separate injection technical string device of non metal continuous oil pipe of the present invention, substitutes the original technique of carrying out seperated layer water injection with injection well downhole flow regulator, has anticorrosion, anti-scaling action preferably.Because the adjustment of flow carries out on ground, because omitted herein numerous and diverse downhole measurement adjusting work, eliminating the down-hole accident surveyed and adjust and occur in operation, effectively ensure that the effective injection rate of each layer simultaneously.
Embodiment 2:
On the basis of embodiment 1, in-site installation of the present invention and the course of work are introduced:
As shown in Figure 3; nonmetal continuous-tube 1 is connected with tubing hanger 15, casing protective packer 8, reservoir packer 9 by metal crossover sub, and the first waterflood path 3, second waterflood path 4 of its inside passes through from the inside of casing protective packer 8, reservoir packer 9 respectively.Nonmetal continuous-tube 1 is contacted with casing head 13 by connected tubing hanger 15, utilizes tubing string gravity mutually to compress the annular space formed between the nonmetal continuous-tube 1 of sealing and sleeve pipe 14.First waterflood path 3, second waterflood path 4 regulates metering device 2 to be connected by crossover sub with injection rate, and injection rate regulates metering device 2 to carry out control and regulation to the injected water volume of the first reservoir 10, second reservoir 11 respectively.
The concrete position of the length of the nonmetal continuous-tube 1 that will use, casing protective packer 8 and reservoir packer 9 is determined according to the concrete degree of depth of the first reservoir 10, interlayer 12, second reservoir 11.Such as the 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 nonmetal continuous-tube 1 is at least more than 2020 meters, and period will consider the elongation effect of nonmetal continuous-tube 1 under gravity, hydraulic action.Tubing hanger 15 is connected by the topmost of metal crossover sub with nonmetal continuous-tube 1.The well fluid apertures that sets of casing protective packer 8 and reservoir packer 9 is connected with the second waterflood path 4.After tubing string G.I.H, the second waterflood path 4 adds hydraulic pressure casing protective packer 8 and reservoir packer 9 is set.After setting end, after the first waterflood path 3, second waterflood path 4 regulates metering device 2 to connect with injection rate respectively, carry out water filling by injection allocation requirement.
In sum, the present invention compared with prior art, has the following advantages:
1, non metal continuous oil pipe is designed with the passage that liquid passes through, and can meet the injection requirement of two-layer stratified injection well, and its underpart communicates with casing protective packer 8, reservoir packer 9 respectively, and end is connected respectively with two reservoirs.Passage adopts processing mode manufacture in advance, can be connected at Injection Well well head with flow rate test governor motion, realizes ground test and the adjustment of flow;
2, the tension wire 6 in non metal continuous oil pipe has stronger resistance to tension, while bearing non metal continuous oil pipe 1 weight, the pulling force of extra well head can also be born, by brute force proposes unfreezing, the requirement of casing protective packer 8, reservoir packer 9 deblocking pulling force can be met when meeting card in tubing string use procedure;
3, non metal continuous oil pipe has higher anti-internal pressure capability, and inner pre-processed liquid injection channel bearing capacity is better, be adapted to higher well head water injection pressure and uniaxial pressure poor, functional reliability is better; ,
4, non metal continuous oil pipe Continuous maching, non metal continuous oil pipe bottom connecting downhole instrument during individual well operation, top connects well head sealing tool, enter under continuous by rotating disk, do not need the order as metal oil conduit to want oil pipe operation, work operations amount is little, and personnel labor intensity reduces.
The technology that the present embodiment does not describe in detail belongs to known technology or the common technology of the industry, does not describe one by one here.
More than exemplifying is only illustrate of the present invention, does not form the restriction to protection scope of the present invention, everyly all belongs within protection scope of the present invention with the same or analogous design of the present invention.
Claims (7)
1. the two-layer zone separate injection technical string device of non metal continuous oil pipe, it is characterized in that: comprise non metal continuous oil pipe (1), injection rate adjusting device (2), be provided with about centrosymmetric first waterflood path (3) of non metal continuous oil pipe (1) and the second waterflood path (4) in described non metal continuous oil pipe (1), the top of described first waterflood path (3) and the second waterflood path (4) is equipped with injection rate adjusting device (2), and is all connected with injection rate adjusting device (2) by crossover sub;
Described non metal continuous oil pipe (1), the first waterflood path (3) and the second waterflood path (4) are polyvinyl piping materials, are filled with the mixed packing of polyethylene filler (5) and tension wire (6) in non metal continuous oil pipe (1).
2. the two-layer zone separate injection technical string device of a kind of non metal continuous oil pipe according to claim 1, is characterized in that: it is inner that described tension wire (6) adopts the mode of axial screw to be distributed in polyethylene filler (5).
3. the two-layer zone separate injection technical string device of a kind of non metal continuous oil pipe according to claim 2, is characterized in that: described tension wire (6) diameter is 1 ~ 1.5mm, and tensile strength is 1t.
4. the two-layer zone separate injection technical string device of a kind of non metal continuous oil pipe according to claim 1, is characterized in that: described injection rate adjusting device (2) is needle-valve flow meter.
5. the two-layer zone separate injection technical string device of a kind of non metal continuous oil pipe according to claim 1; it is characterized in that: described non metal continuous oil pipe (1) is also provided with topping (7) outward, described topping (7) and non metal continuous oil pipe (1) adopt that the mode that absorbs is cementing to be integrated.
6. the two-layer zone separate injection technical string device of a kind of non metal continuous oil pipe according to claim 5, is characterized in that: described topping (7) thickness is 2 ~ 3mm.
7. the two-layer zone separate injection technical string device of a kind of non metal continuous oil pipe according to claim 5 or 6, is characterized in that: described topping (7) is 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 true CN104389563A (en) | 2015-03-04 |
| CN104389563B CN104389563B (en) | 2017-08-04 |
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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 |
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| Country | Link |
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| CN (1) | CN104389563B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107461180A (en) * | 2015-03-07 | 2017-12-12 | 刘玉友 | A kind of underground continuous oil pipe implement |
| CN107587848A (en) * | 2017-09-30 | 2018-01-16 | 河北华通线缆集团股份有限公司 | A kind of multi-channel tube and the method using its progress layering gas recovery |
| CN110965950A (en) * | 2018-09-29 | 2020-04-07 | 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 |
| 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 |
| CN115182709A (en) * | 2021-04-06 | 2022-10-14 | 中国石油天然气股份有限公司 | Three-pipe separate-layer water injection pipe column and using method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN102337873A (en) * | 2011-09-01 | 2012-02-01 | 中国石油天然气股份有限公司 | Multi-channel separate injection pipe column for oil pipe of polymer |
| CN102889437A (en) * | 2012-10-08 | 2013-01-23 | 孟庆义 | 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 |
-
2014
- 2014-12-01 CN CN201410713361.0A patent/CN104389563B/en active Active
Patent Citations (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 |
| CN102337873A (en) * | 2011-09-01 | 2012-02-01 | 中国石油天然气股份有限公司 | Multi-channel separate injection pipe column for oil pipe of polymer |
| CN102889437A (en) * | 2012-10-08 | 2013-01-23 | 孟庆义 | 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 |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107461180A (en) * | 2015-03-07 | 2017-12-12 | 刘玉友 | A kind of underground continuous oil pipe implement |
| CN107587848A (en) * | 2017-09-30 | 2018-01-16 | 河北华通线缆集团股份有限公司 | A kind of multi-channel tube and the method using its progress layering gas recovery |
| CN110965950A (en) * | 2018-09-29 | 2020-04-07 | 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 |
| 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 |
| CN115182709A (en) * | 2021-04-06 | 2022-10-14 | 中国石油天然气股份有限公司 | Three-pipe separate-layer water injection pipe column and using 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104389563B (en) | 2017-08-04 |
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