CN102900409B - Throwing-fishing-free separated layer water injection process pipe column - Google Patents
Throwing-fishing-free separated layer water injection process pipe column Download PDFInfo
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- CN102900409B CN102900409B CN201110208675.1A CN201110208675A CN102900409B CN 102900409 B CN102900409 B CN 102900409B CN 201110208675 A CN201110208675 A CN 201110208675A CN 102900409 B CN102900409 B CN 102900409B
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- water injection
- fishing
- water
- tubing string
- injection process
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 108
- 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 claims abstract description 14
- 230000008569 process Effects 0.000 title claims abstract description 13
- 238000012856 packing Methods 0.000 claims abstract description 14
- 238000004873 anchoring Methods 0.000 claims abstract description 12
- 238000007789 sealing Methods 0.000 claims description 18
- 238000003780 insertion Methods 0.000 claims description 8
- 230000037431 insertion Effects 0.000 claims description 8
- 230000002457 bidirectional effect Effects 0.000 claims description 4
- 238000009826 distribution Methods 0.000 abstract description 15
- 238000005259 measurement Methods 0.000 abstract 2
- 229910000831 Steel Inorganic materials 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 239000010959 steel Substances 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 15
- 238000005266 casting Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 239000011229 interlayer Substances 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention relates to a separate layer water injection process pipe column of an oil pipe of a water injection well, which comprises a special screen pipe (8) for the water well, a double-valve ball seat (7), an anchoring device, a packing device, an oil pipe separator (3), a casing packer (2) and an oil pipe column (1), wherein the pipe column further comprises a hydraulic control switch quantitative water distributor (4), and all the components are sequentially and fixedly connected. The tubular column adopts a water distribution mode combining two functions of quantitative water distribution and intelligent water injection quantity allocation by a hydraulic control switch, can meet the requirement of multilayer subdivided layer water injection of the water injection well, and can also realize the allocation of the water injection quantity without using a steel wire throwing and fishing plug, realize the function of the separated layer water injection of the oil pipe, measuring and adjusting the water distribution quantity of any layer, and solve the problem of difficult throwing and fishing measurement and allocation of the oil field or the problem of separate injection of the water injection well without throwing and fishing measurement and allocation conditions. The tubing separator is matched with the tubing string, so that the scale-corroded water injection well is beneficial to the deblocking of the tubing string and the measure treatment of the tubing string in the later period, and the tubing string is simple in structure, safe and reliable.
Description
Technical field
The present invention relates to a kind of injection well tubing subdivision of reservoir water injection technological string, more particularly to a kind of injection well tubing subdivision
Layer casting-and-fishing-free separated layer water injection process pipe string.
Background technology
As oil field development is goed deep into, stratum becomes increasingly complex, and interlayer difference is big, and conjunction note or two sections of ground dispensings of one-level are not
Production requirement can be met, subdivision of reservoir water filling has become solution interlayer contradiction, improves producing degree of reservoir, excavates interlayer potentiality most
Effective measures.
At present, oil pipe eccentric separated-injection Technology meets more than two sections of one-level or two-stage three-segment in oil field using maturation
The demand of dispensing well, has reached the purpose of subdivision of reservoir water filling, injecting enough water, injecting good water and effective water filling.Due to part oil-field flooding
Pipeline secondary pollution, pit shaft tubing string and water injection tool fouling, seriously corroded, enforcement oil pipe eccentric separated-injection technique pulling is measured tired
Difficulty, pulling and running tool in the oil pipe under do not go, carry to come up.
In recent years, casting and dragging free separate injection tubing string is mainly by three types：One kind be with quantitative water distributor or Quantitative water tap be with
The quantitative water distribution separate injection tubing string of water conservancy project tool, domestic its structural principle basic simlarity of quantitative water distribution separate injection tubing string, injection well downhole flow regulator is carried
Water nozzle with tubing string it is direct under enter, during water filling by before and after water nozzle in blanking plug pressure reduction change control match somebody with somebody fluence, be always with fluence
One steady state value, compares with conventional oil pipe eccentric separated-injection tubing string, reduces the number of times that pulling is measured, and extends the effect duration of tubing string, improves
Dispensing effect.If water nozzle is pierced big or throttling spring failure when its deficiency is water filling, just change with fluence, be no longer constant
Being worth, then allocate water injection rate then needs fishing plugging device or proposes separate injection tubing string in well.Another kind is concentric double pipe ground dispensing pipe
Post, by ground control, convenient accurate, its deficiency is that the dispensing number of plies is restricted, and can only achieve two-stage three-segment for water injection rate allotment.Again
One kind is that dispensing is intelligent surveys allotment water pipe post, once puts into blanking plug, water nozzle can be continuously allocated, with traditional eccentric dispensing pipe
Post compares, and individual well test job efficiency can improve 4/5ths, and weak point is exactly high cost, and scene is difficult to spread should
With.
The content of the invention
It is an object of the invention to provide a kind of casting-and-fishing-free separated that quantitative water distributor is switched including novel hydraulic-control
Tubing string, solves oil field pulling and is measured difficulty or is measured a water injection well dispensing difficult problem for condition without pulling.Using quantitative water distribution and liquid
The water distribution mode that control switch intelligent allocation two kinds of functions of water injection rate are combined, you can meet water injection well multilamellar subdivision of reservoir water filling needs again
Reach and exempted to allocate water injection rate with wire Launching and Bailing blanking plug, realized oil pipe seperated layer water injection casting and dragging free and be measured adjustment random layer water distribution
The function of amount.String matching oil pipe separator, to the water injection well of fouling corrosion tubing string deblocking and the tubing string measure in later stage are conducive to
Process, tubular column structure is simple, convenient, safe and reliable.
The technical solution used in the present invention is：Casting-and-fishing-free separated layer water injection process pipe string includes well Special screen 8, double valves
Ball seat 7, anchoring device, packing device, oil pipe separator 3, set protect packer 2 and tubing string 1, and the tubing string also includes pilot-controlled switch
Quantitative water distributor 4, the water distribution mode combined using two kinds of functions of quantitative water distribution and pilot-controlled switch intelligent allocation water injection rate, you can full
Sufficient water injection well multilamellar subdivision of reservoir water filling needs to have reached again exempts to allocate water injection rate with wire Launching and Bailing blanking plug, realizes oil pipe layering
Water filling casting and dragging free is measured the function of adjustment random layer water distribution quantity.
The tubing string is by the well Special screen 8, described pair of valve ball seat 7, the pilot-controlled switch quantitative water distributor 4, institute
State anchoring device, the packing device, the oil pipe separator 3, set guarantor's packer 2 and the tubing string 1 to fix successively
Connection composition.
Wherein, the well Special screen 8 can also be composed of a fixed connection by plug 12 and screen casing 11.The anchoring device
Can be hydraulic slip 6 or bidirectional anchor 9.The packing device can be water injection packer 5 or insertion sealing device 10.Institute
State insertion sealing device 10 and be inserted into the interior sealing of preset sealing drum 13 positioning.Namely screen casing, anchoring device, packing device are all
There are two kinds of optional technical schemes.
In order to more preferably realize the purpose of the present invention, the tubing string can install many sets pilot-controlled switch quantitative water distributor 4.
It is an advantage of the current invention that：The tubing string installs many set pilot-controlled switch quantitative water distributors, not only realizes conventional well level Four
More than five sections of subdivision of reservoir water filling, and to do not possess oil pipe eccentric separated-injection condition dispensing well (such as：It is corrosion and scaling, deep-well, big
Gradient) etc. can realize oil pipe subdivision of reservoir water filling, either conventional dispensing well or special dispensing well realize multistage multilayer section
Subdivision note exempts from the function that wire Launching and Bailing allocates water injection rate, improves the success rate of dispensing well；The process pipe string simple structure, conjunction
Reason, performance safety reliability；Allotment water injection rate is convenient, time saving and energy saving, the accurate error of data is little.
Below in conjunction with accompanying drawing, the invention will be further described：
Description of the drawings
Fig. 1 is the structural representation of the first embodiment of tubing string of the present invention；
Fig. 2 is the structural representation of second embodiment of tubing string of the present invention.
Specific embodiment
Casting-and-fishing-free separated layer water injection process pipe string of the present invention includes well Special screen 8, double valve ball seats 7, anchoring device, envelope
Packer 2 and tubing string 1 are protected every device, oil pipe separator 3, set, the tubing string also includes pilot-controlled switch quantitative water distributor 4, adopts
The water distribution mode that quantitative water distribution is combined with two kinds of functions of pilot-controlled switch intelligent allocation water injection rate, you can meet the subdivision of water injection well multilamellar
Layer water filling needs to have reached again exempts to allocate water injection rate with wire Launching and Bailing blanking plug, realizes oil pipe seperated layer water injection casting and dragging free and is measured tune
The function of whole random layer water distribution quantity.
The tubing string is by the well Special screen 8, described pair of valve ball seat 7, the pilot-controlled switch quantitative water distributor 4, institute
State anchoring device, the packing device, the oil pipe separator 3, set guarantor's packer 2 and the tubing string 1 to fix successively
Connection composition.
Wherein, the well Special screen 8 can also be composed of a fixed connection by plug 12 and screen casing 11.The anchoring device
Can be hydraulic slip 6 or bidirectional anchor 9.The packing device can be water injection packer 5 or insertion sealing device 10.Institute
State insertion sealing device 10 and be inserted into the interior sealing of preset sealing drum 13 positioning.Namely screen casing, anchoring device, packing device are all
There are two kinds of optional technical schemes.
In order to more preferably realize the purpose of the present invention, the tubing string can install many sets pilot-controlled switch quantitative water distributor 4.
The first embodiment of the invention is as shown in Figure 1.The tubing string is by well Special screen 8, double valve ball seats 7, hydraulic control
Switch quantitative water distributor 4, hydraulic slip 6, the oil pipe separator 3 of water injection packer 5, set protect packer 2 and tubing string 1 is set by construction
Meter ground-mounted well lower going-into-well cylinder design attitude from bottom to top, oil pipe suppresses that water injection packer 5 is setting, and packing element is sealed in oil jacket ring
Sky, each water filling interval is separated, and becomes independent space.By with quantitative injection by fluence after construction, first by pilot-controlled switch
The constant device down-hole of quantitative water distributor 4 carries out constant water filling, and be not stressed influence of fluctuations；Need adjust water injection rate when, suppress to
Pilot-controlled switch injects pressure code, and pilot-controlled switch is connected to after same pressure code, opens or closes and just can carry out water injection rate
Adjust.Random layer regulation can be carried out, is not limited by layer position and number of times.
Second embodiment of the invention is as shown in Figure 2.The tubing string is by plug 12, the quantitative water distribution of screen casing 11, pilot-controlled switch
Device 4, insertion sealing device 10, bidirectional anchor 9, oil pipe separator 3, set guarantor's packer 2 and tubing string 1 are constituted, and are being drilled well
When the preset sealing drum 13 of sleeve pipe is pre-installed in into water filling Ceng Ding circle and bottom circle, tubing string by detail design requirement ground-mounted well from
Enter pit shaft up and down down, insertion sealing device is arrived behind the position of preset sealing drum 13 for 10 times, be inserted in preset sealing drum 13 and close
Envelope positioning, by oil reservoir some intervals are separated into, in each interval under enter pilot-controlled switch quantitative water distributor 4, realize two-stage three-segment with
Upper subdivision of reservoir water filling.By with quantitative injection by fluence after construction, first entered by the constant device down-hole of pilot-controlled switch quantitative water distributor 4
Row constant water filling, be not stressed influence of fluctuations；When needing to adjust water injection rate, suppress to pilot-controlled switch and inject pressure code, hydraulic control is opened
Pass is connected to after same pressure code, and opening or closing just can carry out the regulation of water injection rate.Random layer regulation can be carried out, is not received
Layer position and number of times are limited.
When needing water to change, upper lifting pipe post directly unseals proposition tubing string, if deblocking is not smoothly, rotation pipeline 1, and tubing string is from oil pipe
Proposition is turned at separator 3.Then, well-flushing enters fishing string down again, pulls remaining tubing string out.
Claims (5)
1. a kind of casting-and-fishing-free separated layer water injection process pipe string, including well Special screen (8), double valve ball seat (7), one
Individual anchoring device, two packing devices, oil pipe separator (3), a sets protect packer (2) and a tubing string (1), its
It is characterised by：The tubing string also includes three pilot-controlled switch quantitative water distributors (4)；
The well Special screen (8), described pair of valve ball seat (7), first the pilot-controlled switch quantitative water distributor (4), institute
State anchoring device, first packing device, second the pilot-controlled switch quantitative water distributor (4), second packing
Device, the 3rd the pilot-controlled switch quantitative water distributor (4), the oil pipe separator (3), the set protect packer (2) and institute
State tubing string (1) to be fixedly connected sequentially from bottom to top；
The well Special screen (8) is composed of a fixed connection by plug (12) and screen casing (11).
2. casting-and-fishing-free separated layer water injection process pipe string according to claim 1, it is characterised in that：The anchoring device is waterpower
Slips (6) or bidirectional anchor (9).
3. casting-and-fishing-free separated layer water injection process pipe string according to claim 1, it is characterised in that：The packing device is water filling
Packer (5).
4. casting-and-fishing-free separated layer water injection process pipe string according to claim 1, it is characterised in that：The packing device is insertion
Sealing device (10).
5. casting-and-fishing-free separated layer water injection process pipe string according to claim 4, it is characterised in that：On the top circle and bottom of water filling layer
Boundary is provided with preset sealing drum (13), and it is fixed that insertion sealing device (10) is inserted into preset sealing drum (13) interior sealing
Position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110208675.1A CN102900409B (en) | 2011-07-25 | 2011-07-25 | Throwing-fishing-free separated layer water injection process pipe column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110208675.1A CN102900409B (en) | 2011-07-25 | 2011-07-25 | Throwing-fishing-free separated layer water injection process pipe column |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102900409A CN102900409A (en) | 2013-01-30 |
| CN102900409B true CN102900409B (en) | 2017-04-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110208675.1A Active CN102900409B (en) | 2011-07-25 | 2011-07-25 | Throwing-fishing-free separated layer water injection process pipe column |
Country Status (1)
| Country | Link |
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| CN (1) | CN102900409B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105089571A (en) * | 2014-05-24 | 2015-11-25 | 天津大港油田钻采技术开发公司 | Water injection string without surface flow and water injection technological method of water injection string |
| CN104141477B (en) * | 2014-07-28 | 2017-01-25 | 克拉玛依市红都有限责任公司 | Concentric three-tube separated layer water injection device and using method thereof |
| CN104847319B (en) * | 2015-05-26 | 2018-10-19 | 成都北方石油勘探开发技术有限公司 | Trinity quantitative injection device |
| CN110905446B (en) * | 2018-09-18 | 2022-05-06 | 中国石油天然气股份有限公司 | Double-ball switch device |
| CN109594957A (en) | 2018-10-15 | 2019-04-09 | 中国石油天然气股份有限公司 | Separate-layer water injection device |
| CN112855096A (en) * | 2021-02-03 | 2021-05-28 | 李青 | Simple separate layer water injection string |
| CN114876424A (en) * | 2022-06-07 | 2022-08-09 | 中海石油(中国)有限公司深圳分公司 | Separate mining and separate injection string and separate mining and separate injection method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201013335Y (en) * | 2007-04-11 | 2008-01-30 | 大庆油田有限责任公司 | Water injection well pressure-working technique pipe column |
| CN101498211A (en) * | 2009-02-26 | 2009-08-05 | 中国石油化工股份有限公司 | Method for water distribution by sound wave remote control |
| CN201581877U (en) * | 2009-11-20 | 2010-09-15 | 大庆油田有限责任公司 | Same-well multi-layer injection-production technical tubing string |
| CN202249994U (en) * | 2011-07-25 | 2012-05-30 | 中国石油天然气股份有限公司 | Throwing-fishing-free separated layer water injection process pipe column |
-
2011
- 2011-07-25 CN CN201110208675.1A patent/CN102900409B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201013335Y (en) * | 2007-04-11 | 2008-01-30 | 大庆油田有限责任公司 | Water injection well pressure-working technique pipe column |
| CN101498211A (en) * | 2009-02-26 | 2009-08-05 | 中国石油化工股份有限公司 | Method for water distribution by sound wave remote control |
| CN201581877U (en) * | 2009-11-20 | 2010-09-15 | 大庆油田有限责任公司 | Same-well multi-layer injection-production technical tubing string |
| CN202249994U (en) * | 2011-07-25 | 2012-05-30 | 中国石油天然气股份有限公司 | Throwing-fishing-free separated layer water injection process pipe column |
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| Publication number | Publication date |
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| CN102900409A (en) | 2013-01-30 |
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