CN109707327A - A kind of concentric double pipe dispensing Operating Pressure tubing string - Google Patents
A kind of concentric double pipe dispensing Operating Pressure tubing string Download PDFInfo
- Publication number
- CN109707327A CN109707327A CN201910054165.XA CN201910054165A CN109707327A CN 109707327 A CN109707327 A CN 109707327A CN 201910054165 A CN201910054165 A CN 201910054165A CN 109707327 A CN109707327 A CN 109707327A
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- China
- Prior art keywords
- oil pipe
- water injection
- pipe
- segment
- injection packer
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 64
- 238000002347 injection Methods 0.000 claims abstract description 62
- 239000007924 injection Substances 0.000 claims abstract description 62
- 239000011152 fibreglass Substances 0.000 claims abstract description 43
- 210000002445 nipple Anatomy 0.000 claims abstract description 39
- 238000002627 tracheal intubation Methods 0.000 claims abstract description 23
- 238000007789 sealing Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 abstract description 7
- 239000010410 layer Substances 0.000 description 6
- 239000011521 glass Substances 0.000 description 4
- 238000012856 packing Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 230000002706 hydrostatic effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000013589 supplement Substances 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 discloses a kind of concentric double pipes to dispense Operating Pressure tubing string, first segment 31/2" oil pipe, the first water injection packer, second segment 31/2" oil pipe, level pressure distributor, third section 31/2" oil pipe, the second water injection packer and the 4th section 31/2" oil pipe is sequentially connected from top to bottom, and first segment 31/2" upper end of oil pipe is connected with well head, and 1.9 " lower ends of glass fiber reinforced plastic oil pipe and 1.9 " intubation is connected, and 1.9 " preset seating nipple and glass fiber reinforced plastic oil pipe short section are located at first segment 31/2" in oil pipe, 1.9 " upper end of glass fiber reinforced plastic oil pipe sequentially passes through the 4th section 31/2" oil pipe, the second water injection packer, third section 31/2" oil pipe, level pressure distributor, second segment 31/2" oil pipe, the first water injection packer are inserted in first segment 31/2The lower end of " in oil pipe after with 1.9 " preset seating nipple is connected, which can satisfy the requirement that outer tube is with pressure, inner tube normal pressure concentric double pipe dispenses Operating Pressure technique.
Description
Technical field
The invention belongs to oil-field flooding fields, are related to a kind of concentric double pipe dispensing Operating Pressure tubing string.
Background technique
With deepening continuously for oil field development, stratum energy all declines quickly between different oil reservoirs and there are great differences,
It seriously affects oil field and continues Efficient Development.Carrying out water filling supplement stratum energy to different oil reservoirs is the effective hand for improving recovery ratio
Section, existing frequently-used zonal injection technology mainly has the techniques such as water injection through tubing and casing, bridge-type eccentric dispensing, bridge-type concentric separated-injection, with oil field
The iterative method of fine-grained management, the more or less presence survey of existing zonal injection technology adjust the rate height that is hampered, survey and adjust period length, allotment
The problems such as precision is low.In order to solve high angle hole, deep-well, produced-water reinjection well seperated layer water injection test allotment problem, carry out concentric
Two-tube dispensing technical research respectively fills the water dually completed injector by two casing column combination of size, and downhole instrument is surveyed and is adjusted
It is changed to ground flow automatic gauge and control, reducing the later period is measured and tuned into this, improves single layer dispensing qualification rate.Due to hyposmosis
Oil-field flooding is more difficult, replace water injection string generally not pressure release, it is desirable that Operating Pressure, at present oil field concentric double pipe dispense work
Skill is unsatisfactory for Operating Pressure requirement, therefore, dispenses and requires in conjunction with low permeability oil field concentric double pipe, propose it is a kind of " outer tube is with pressure,
The concentric double pipe dispensing Operating Pressure technique and tubing string of inner tube normal pressure ".
Summary of the invention
It is an object of the invention to overcome the above-mentioned prior art, a kind of concentric double pipe dispensing Operating Pressure is provided
Tubing string, the tubing string can satisfy the requirement of outer tube concentric double pipe dispensing Operating Pressure technique with pressure, inner tube normal pressure.
In order to achieve the above objectives, concentric double pipe of the present invention dispensing Operating Pressure tubing string includes 1.9 " glass reinforced plastic oil
" preset seating nipple, glass fiber reinforced plastic oil pipe pipe nipple, the second water injection packer, level pressure distributor, is inserted the first water injection packer for pipe, 1.9
Seal of tube distributor, 1.9 " intubation and four section 31/2 " oil pipes；
First segment 31/2 " oil pipe, the first water injection packer, second segment 31/2 " oil pipe, level pressure distributor, third section 31/2 "
" oil pipe is sequentially connected from top to bottom, and " the upper end of oil pipe of first segment 31/2 for oil pipe, the second water injection packer and the 4th section 31/2
It is connected with well head, 1.9 " lower ends of glass fiber reinforced plastic oil pipe and 1.9 " intubation is connected, 1.9 " preset seating nipple and glass fiber reinforced plastic oil pipes
Short section is located at first segment 31/2 " in oil pipe, 1.9 " upper end of glass fiber reinforced plastic oil pipe sequentially passes through the 4th section 31/2 " oil pipes, the second note
Water packer, third section 31/2 " oil pipe, level pressure distributor, second segment 31/2 " oil pipe, the first water injection packer are inserted in first
The lower end of the preset seating nipple of section 31/2 " in oil pipe after with 1.9 " is connected, and 1.9 " it is oily that the upper end of preset seating nipple passes through glass reinforced plastic
Pipe pipe nipple is connected with well head.
First water injection packer and the second water injection packer are Y341-114 type water injection packer.
The lower thread connected pipes pipe nipple and silk plug of intubation sealing distributor.
First segment 31/2 " oil pipe, the first water injection packer, second segment 31/2 " oil pipe, level pressure distributor, third section 31/2 "
Oil pipe, the second water injection packer and the 4th section 31/2 " are connected through a screw thread between oil pipe.
It is connected through a screw thread between the intubation of 1.9 " lower end of glass fiber reinforced plastic oil pipe and 1.9 "；
It is connected through a screw thread between 1.9 " glass fiber reinforced plastic oil pipe and 1.9 " preset seating nipples；
1.9 " it is connected through a screw thread between preset seating nipple and glass fiber reinforced plastic oil pipe pipe nipple.
The internal diameter of first water injection packer and the second water injection packer is 62mm.
The invention has the following advantages:
Concentric double pipe of the present invention dispensing Operating Pressure tubing string is when specific operation, using the structure shape of concentric double pipe
Formula, outer tube is with pressure, the dispensing Operating Pressure technique requirement of concentric double pipe of inner tube normal pressure to meet, and realizes the ground of two layers of dispensing flow
Face, which is surveyed, to be adjusted and controls, and water injection rate is round-the-clock up to standard；Using 1.9 simultaneously, " glass fiber reinforced plastic oil pipe is to improve the corrosion resistance of tubing string, effectively
Extend the service life of tubing string.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Wherein, 1 be 31/2 " oil pipe, 2 are 1.9 " glass fiber reinforced plastic oil pipe, 3 being 1.9, " preset seating nipple, 4 are the first water filling packing
Device, 5 be level pressure distributor, 6 be the second water injection packer, 7 be intubation sealing distributor, " the intubation that 8 is 1.9.
Specific embodiment
The invention will be described in further detail with reference to the accompanying drawing:
With reference to Fig. 1, concentric double pipe dispensing Operating Pressure tubing string of the present invention includes 1.9 " glass fiber reinforced plastic oil pipes 2,1.9 "
Preset seating nipple 3, the first water injection packer 4, glass fiber reinforced plastic oil pipe pipe nipple, the second water injection packer 6, level pressure distributor 5, intubation are close
Seal distributor 7,1.9 " intubation 8 and four section 31/2 " oil pipe 1；First segment 31/2 " oil pipe 1, the first water injection packer 4, second segment
" oil pipe 1 is from upper for 31/2 " oil pipe 1, level pressure distributor 5, third section 31/2 " oil pipe 1, the second water injection packer 6 and the 4th section 31/2
It is sequentially connected, and first segment 31/2 that " upper end of oil pipe 1 is connected with well head, 1.9 " lower ends of glass fiber reinforced plastic oil pipe 2 and 1.9 " under
Intubation 8 is connected, in 1.9 " preset seating nipple 3 and glass fiber reinforced plastic oil pipe short section are located at first segment 31/2 " oil pipes 1,1.9 " glass reinforced plastics
The upper end of oil pipe 2 sequentially passes through the 4th section of 31/2 " oil pipe 1, the second water injection packer 6, third section 31/2 " oil pipe 1, level pressure injection allocation
Rear and 1.9 " preset work in device 5, second segment 31/2 " oil pipe 1, the first water injection packer 4 are inserted in first segment 31/2 " oil pipe 1
The lower end of cylinder 3 is connected, and 1.9 " upper end of preset seating nipple 3 is connected by glass fiber reinforced plastic oil pipe pipe nipple with well head.
First water injection packer 4 and the second water injection packer 6 are Y341-114 type water injection packer, the first water filling packing
The internal diameter of device 4 and the second water injection packer 6 is 62mm；The lower thread connected pipes pipe nipple and silk plug of intubation sealing distributor 7.
First segment 31/2 " oil pipe 1, the first water injection packer 4, second segment 31/2 " oil pipe 1, level pressure distributor 5, third section
It is connected through a screw thread between 31/2 " oil pipe 1, the second water injection packer 6 and the 4th section 31/2 " oil pipe 1；1.9 " glass fiber reinforced plastic oil pipes
2 lower end and 1.9 " is connected through a screw thread between intubation 8；Pass through spiral shell between 1.9 " glass fiber reinforced plastic oil pipe 2 and 1.9 " preset seating nipples 3
Line connection；1.9 " it is connected through a screw thread between preset seating nipple 3 and glass fiber reinforced plastic oil pipe pipe nipple.
Tripping in 31/2 with pressure " oil pipe 1: intubation sealing 7 lower thread connected pipes pipe nipple of distributor and silk plug is intubated close
The threaded upper ends connection of envelope 7 threaded upper ends of distributor " lower end of oil pipe 1, the 4th section 31/2 " oil pipe 1 that connects the 4th section 3,1/2 the
The threaded upper ends of the lower end of two water injection packers 6, the second water injection packer 6 connect third section 31/2 " lower end of oil pipe 1, third
Section 31/2 " threaded upper ends of oil pipe 1 connect 5 lower end of level pressure distributor, and 5 threaded upper ends of level pressure distributor connect second segment 31/2 "
" threaded upper ends of oil pipe 1 connect the lower end of the first water injection packer 4, the first water filling packing for the lower end of oil pipe 1, second segment 31/2
The threaded upper ends of device 4 connect the 4th section 31/2, and " oil pipe 1, " oil pipe 1 is connected to well head to first segment 31/2.It is fixed during tripping in
It presses distributor 5 and intubation sealing 7 flow channels of distributor to close, is not connected to inside and outside oil pipe, using Operating Pressure equipment lower going-into-well
Cylinder predetermined position.
Normal pressure tripping in 1.9 " glass reinforced plastic tubing string: by 1.9 " is intubated 8 threaded upper ends connection, 1.9 " 2,1.9 " glass of glass fiber reinforced plastic oil pipe
Glass steel oil pipe 2 is connected to 1.9, and " " upper end of preset seating nipple 3 connects through glass fiber reinforced plastic oil pipe pipe nipple for the lower end of preset seating nipple 3,1.9
Interior " not being connected to inside and outside oil pipe 1, each 31/2 " oil pipe 1 that well head is connected to, due to each 31/2 is hydrostatic column, so meeting normal pressure tripping in.
Packer setting and open note: will be suppressed in the annular space between 31/2 " oil pipe 1 and 1.9 " glass fiber reinforced plastic oil pipe 2 to
When 1 external differential of 20MPa, when with 31/2 " oil pipe reaches 5MPa, the first water injection packer 4 and the second water injection packer 6 complete seat
Envelope；22~23MPa is boosted to again, " when the external differential of oil pipe 1 reaches 8MPa, is opened level pressure distributor 5 when with 31/2, is opened
Upper layer waterflood path, 1.9 " glass fiber reinforced plastic oil pipe 2 is suppressed to 20-22MPa, with 1.9 " glass fiber reinforced plastic oil pipe, 2 outer annular space (general 15MPa)
Pressure difference when reaching 8MPa, destroy the temporary stifled valve piston in intubation sealing distributor 7, opening lower layer's waterflood path, using ground
Each layer daily water-injection rate of automatic control valve regulation realizes two layers of dispensing.
" 1 outer oil jacket annulus injection of oil pipe, by the first water injection packer 4 and the second water filling that anti-flushing well: flushing fluid is from 31/2
6 backwash channel of packer, using intubation sealing 7 flow channels of distributor into 1.9 " in glass fiber reinforced plastic oil pipe 2, most afterwards through 1.9 " glass
Glass steel oil pipe 2 returns out to ground.
Normal pressure plays 1.9, and " glass fiber reinforced plastic oil pipe 2: level pressure distributor 5 is automatically closed when stopping note, from 1.9, and " glass fiber reinforced plastic oil pipe 2 is put into
Blanking plug seat enters 1.9, and " preset seating nipple 3, which blocks stratum back-pressure 1.9, " under preset seating nipple 3, to be unloaded well head, installs
Operating Pressure equipment, by 1.9 " glass fiber reinforced plastic oil pipe 2 above mentions 1m, makes 1.9 " is intubated 8 front ends and seal assembly is driven to move up, and closes intubation
The flow channels for sealing distributor 7, it is liquid column hydrostatic pressure in oil pipe 1 " outside oil pipe 1,31/2 " 31/2 that strata pressure, which is obstructed,
Intubation 8 that normal pressure successively plays out 1.9 " tubing nipple, 1.9 " preset seating nipple 3,1.9 " glass fiber reinforced plastic oil pipes 2 and 1.9 ".
With pressure 31/2 " Guan Guanzhu: above mentioning 31/2 " oil pipe 1 unseals the first water injection packer 4 and the second water injection packer 6,
" oil pipe 1, the first water injection packer 4, level pressure distributor 5, the second water injection packer 6 and intubation sealing with pressure successively to play out 31/2
Distributor 7 completes lift pipe string operation with pressure.
Claims (6)
1. a kind of concentric double pipe dispenses Operating Pressure tubing string, which is characterized in that preset including 1.9 " glass fiber reinforced plastic oil pipes (2), 1.9 "
Seating nipple (3), glass fiber reinforced plastic oil pipe pipe nipple, the second water injection packer (6), level pressure distributor (5), is inserted the first water injection packer (4)
Seal of tube distributor (7), 1.9 " intubation (8) and four section 31/2" oil pipe (1)；
First segment 31/2" oil pipe (1), the first water injection packer (4), second segment 31/2" oil pipe (1), level pressure distributor (5), third
Section 31/2" oil pipe (1), the second water injection packer (6) and the 4th section 31/2" oil pipe (1) is sequentially connected from top to bottom, and first segment
31/2" upper end of oil pipe (1) is connected with well head, and 1.9 " lower ends and 1.9 of glass fiber reinforced plastic oil pipe (2) " intubation (8) is connected, 1.9 "
Preset seating nipple (3) and glass fiber reinforced plastic oil pipe short section are located at first segment 31/2" in oil pipe (1), the 1.9 " upper ends of glass fiber reinforced plastic oil pipe (2)
Sequentially pass through the 4th section 31/2" oil pipe (1), the second water injection packer (6), third section 31/2" oil pipe (1), level pressure distributor (5),
Second segment 31/2" oil pipe (1), the first water injection packer (4) are inserted in first segment 31/2" after in oil pipe (1) and 1.9 " preset work
The lower end of cylinder (3) is connected, and 1.9 " upper end of preset seating nipple (3) is connected by glass fiber reinforced plastic oil pipe pipe nipple with well head.
2. concentric double pipe according to claim 1 dispenses Operating Pressure tubing string, which is characterized in that the first water injection packer
(4) and the second water injection packer (6) is Y341-114 type water injection packer.
3. concentric double pipe according to claim 1 dispenses Operating Pressure tubing string, which is characterized in that intubation sealing distributor
(7) lower thread connected pipes pipe nipple and silk plug.
4. concentric double pipe according to claim 1 dispenses Operating Pressure tubing string, which is characterized in that first segment 31/2" oil pipe
(1), the first water injection packer (4), second segment 31/2" oil pipe (1), level pressure distributor (5), third section 31/2" oil pipe (1), second
Water injection packer (6) and the 4th section 31/2" oil pipe is connected through a screw thread between (1).
5. concentric double pipe according to claim 1 dispenses Operating Pressure tubing string, which is characterized in that 1.9 " glass fiber reinforced plastic oil pipes
(2) lower end and 1.9 " is connected through a screw thread between intubation (8)；
It is connected through a screw thread between 1.9 " glass fiber reinforced plastic oil pipe (2) and 1.9 " preset seating nipples (3)；
1.9 " it is connected through a screw thread between preset seating nipple (3) and glass fiber reinforced plastic oil pipe pipe nipple.
6. concentric double pipe according to claim 1 dispenses Operating Pressure tubing string, which is characterized in that the first water injection packer
(4) and the internal diameter of the second water injection packer (6) is 62mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910054165.XA CN109707327A (en) | 2019-01-21 | 2019-01-21 | A kind of concentric double pipe dispensing Operating Pressure tubing string |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910054165.XA CN109707327A (en) | 2019-01-21 | 2019-01-21 | A kind of concentric double pipe dispensing Operating Pressure tubing string |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109707327A true CN109707327A (en) | 2019-05-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910054165.XA Pending CN109707327A (en) | 2019-01-21 | 2019-01-21 | A kind of concentric double pipe dispensing Operating Pressure tubing string |
Country Status (1)
| Country | Link |
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| CN (1) | CN109707327A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110617041A (en) * | 2019-10-09 | 2019-12-27 | 中国石油天然气股份有限公司 | Water injection well water absorption profile adjusting sleeve and adjusting method |
| CN112434394A (en) * | 2019-08-07 | 2021-03-02 | 中国石油天然气股份有限公司 | Method and device for selecting size of polymer flooding concentric double-pipe injection oil pipe |
| CN112647912A (en) * | 2020-12-29 | 2021-04-13 | 中国海洋石油集团有限公司 | Chemical flooding multi-medium layered injection pipe column and installation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87101671A (en) * | 1987-03-06 | 1988-09-14 | 新疆石油管理局油田工艺研究所 | Concentric double pipe stratified injection water technology |
| US20040011561A1 (en) * | 2002-07-22 | 2004-01-22 | Hughes W. James | Method and apparatus for inducing under balanced drilling conditions using an injection tool attached to a concentric string of casing |
| US20150376984A1 (en) * | 2013-01-31 | 2015-12-31 | Petrochina Company Limited | Bridge-type concentric continuously adjustable water distributor |
| CN209892121U (en) * | 2019-01-21 | 2020-01-03 | 中国石油天然气股份有限公司 | Concentric double-tube separate injection pressurized operation string |
-
2019
- 2019-01-21 CN CN201910054165.XA patent/CN109707327A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87101671A (en) * | 1987-03-06 | 1988-09-14 | 新疆石油管理局油田工艺研究所 | Concentric double pipe stratified injection water technology |
| US20040011561A1 (en) * | 2002-07-22 | 2004-01-22 | Hughes W. James | Method and apparatus for inducing under balanced drilling conditions using an injection tool attached to a concentric string of casing |
| US20150376984A1 (en) * | 2013-01-31 | 2015-12-31 | Petrochina Company Limited | Bridge-type concentric continuously adjustable water distributor |
| CN209892121U (en) * | 2019-01-21 | 2020-01-03 | 中国石油天然气股份有限公司 | Concentric double-tube separate injection pressurized operation string |
Non-Patent Citations (1)
| Title |
|---|
| 王薇等: "同心双管分注带压作业井下工具的研究与试验", 《2017油气田勘探与开发国际会议》, pages 1 - 7 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112434394A (en) * | 2019-08-07 | 2021-03-02 | 中国石油天然气股份有限公司 | Method and device for selecting size of polymer flooding concentric double-pipe injection oil pipe |
| CN110617041A (en) * | 2019-10-09 | 2019-12-27 | 中国石油天然气股份有限公司 | Water injection well water absorption profile adjusting sleeve and adjusting method |
| CN112647912A (en) * | 2020-12-29 | 2021-04-13 | 中国海洋石油集团有限公司 | Chemical flooding multi-medium layered injection pipe column and installation method thereof |
| CN112647912B (en) * | 2020-12-29 | 2022-09-13 | 中国海洋石油集团有限公司 | Chemical flooding multi-medium layered injection pipe column and installation method thereof |
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