CN105863588A - Balanced injection and recovery method of thickened oil thermal recovery horizontal well - Google Patents
Balanced injection and recovery method of thickened oil thermal recovery horizontal well Download PDFInfo
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- CN105863588A CN105863588A CN201610280362.XA CN201610280362A CN105863588A CN 105863588 A CN105863588 A CN 105863588A CN 201610280362 A CN201610280362 A CN 201610280362A CN 105863588 A CN105863588 A CN 105863588A
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000011084 recovery Methods 0.000 title abstract description 13
- 238000002347 injection Methods 0.000 title abstract description 8
- 239000007924 injection Substances 0.000 title abstract description 8
- 238000010793 Steam injection (oil industry) Methods 0.000 claims abstract description 36
- 238000004519 manufacturing process Methods 0.000 claims abstract description 20
- 239000004576 sand Substances 0.000 claims abstract description 18
- 239000007788 liquid Substances 0.000 claims abstract description 6
- 230000035699 permeability Effects 0.000 claims abstract description 6
- 230000011218 segmentation Effects 0.000 claims abstract description 3
- 238000000605 extraction Methods 0.000 claims description 14
- 238000005065 mining Methods 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 6
- 239000012530 fluid Substances 0.000 claims description 5
- 230000000903 blocking effect Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000725 suspension 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
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Extraction Or Liquid Replacement (AREA)
Abstract
The invention relates to a balanced injection and recovery method of a thickened oil thermal recovery horizontal well. The method comprises steps as follows: before well completion of the horizontal well, a horizontal well section is designed section by section according to the permeability and oil saturation distribution of horizontal sections; the flow intensity of the horizontal sections is designed through comprehensive consideration of steam injection, production and wellbore flowing of the horizontal sections designed in the step 1; the sand blocking accuracy of a sand control screen pipe is designed according to distribution of the sand granularity of the stratum; a completion pipe string is designed and tripped in according to design results of steps 1 to 3; an injection and recovery integrated pipe string is designed and tripped in, steam injection is performed on the horizontal well section, and steam can be injected into corresponding well sections from flowing control devices of the section; the injection and recovery integrated pipe string is tripped out, a conventional production pipe string is tripped in for production, output liquids of all the segmentation sections can flow into a wellbore from respective flowing control devices. The balanced injection and recovery method of the thermal recovery horizontal well is provided, can realize uniform steam injection inside a pipe and outside the pipe in the horizontal well section at the steam injection stage of the thermal recovery horizontal well, can balance the output liquids in the horizontal well section at the production stage and can also perform the sand control function.
Description
Technical field
The present invention relates to a kind of heavy crude heat extraction horizontal well equilibrium note mining method.
Background technology
During heavy crude heat extraction horizontal well steam injection, owing to net horizontal section has certain length,
Conventional steam injection string only one of which steam injection point, makes pressure skewness in horizontal segment tubing string, adds
Upper reservoir heterogeneity, easily causes horizontal segment and inhales vapour inequality, form local and advance by leaps and bounds, occur
Vapour is altered, and makes steam excessive, causes capacity loss.Certain viscous crude field horizontal well thermal recovery domestic is supervised
Survey analysis shows, during horizontal well steam injection, " vapour is altered " is very serious, and more than 70% exists
Vapour is altered in various degree, and horizontal segment is employed the well of inequality and accounted for 80%, has a strong impact on heavy crude heat extraction
Horizontal well production effect.At present, both at home and abroad horizontal well thermal recovery horizontal segment is carried out uniform steam injection,
Mainly take two ways, i.e. net horizontal section Double-pipe gas-injection and multiple spot steam injection.Net horizontal section is double
Pipe steam injection technology, i.e. uses well head " double suspension ", tube-in-tube steam injection mode, and steam is from two
Individual passage injects, and one is to be injected into horizontal segment toe-end from small size integral joint tubing, one
It is to net horizontal section heel end from vacuum heat insulation tube and small size integral joint tubing annular injection；By ground
Surface current amount is reconciled valve and is carried out flow-control, it is achieved two controls going out vapour point different displacements.
Net horizontal section multiple spot steam injection technology is to install multiple steam injection valve on horizontal segment steam injection string, respectively
Use steam umbrella to be separated between steam injection valve, make each net horizontal section form independent steam injection list
Unit；Regulate horizontal segment each steam injection point steam injection amount by steam injection valve, thus the section of being up to the standard is uniform
The purpose of steam injection.The shortcoming of net horizontal section Double-pipe gas-injection is, only two steam injection points, to length
Horizontal segment uniform steam injection regulating power is limited.Multiple spot steam injection mode is due to the outer horizontal segment of screen casing not
Splitting, steam is the most easily absorbed by low pressure, high permeability formation section, actual all to net horizontal section
Even suction modulation limited use.Two kinds of steam injection mode net horizontal sections do not equalize production fluid and control dress
Put, affected by horizontal segment permeability contrast, Wellbore Flow pressure drop, still result in during production
Net horizontal section employs inequality, affects horizontal productivity.Two kinds of steam injection modes are both needed at horizontal segment
Under enter steam injection string, working procedure is complicated, and operating risk is high.
Summary of the invention
The technical problem to be solved in the present invention is the drawbacks described above how overcoming prior art, carries
For a kind of heavy crude heat extraction horizontal well equilibrium note mining method.
For solve above-mentioned technical problem, this heavy crude heat extraction horizontal well equilibrium note mining method include with
Lower step,
Step 1: before horizontal well completion, according to horizontal segment permeability, oil saturation distribution,
Net horizontal section is carried out segment design；
Step 2: the steam injection of the horizontal segment that combining step 1 is designed, production, Wellbore Flow,
Design level section traffic intensity；
Step 3: carry out sand control screen sand block accuracy Design according to the distribution of stratum fineness of sand；
Step 4: according to the design result of step 1 to 3, design and under enter completion tubular column；
Step 5: design and under enter note and adopt integral tubular column, to net horizontal section steam injection, steam meeting
Corresponding well section is injected from each section of flow control apparatus；
Step 6: tripping out note and adopt integral tubular column, lower conventional flow string produces, the respectively section of segmentation
Production fluid can flow into pit shaft from respective flow control apparatus.
As optimizing, completion tubular column described in step 4 is by hanger, light sleeve pipe, resistance to height
Temperature bore hole external packer of pipe, tune stream control sand sieve pipe group with flow control apparatus connect and form；
Described high temperature resistant bore hole external packer of pipe is Expansion sealing, and described hanging packer hangs and seals,
Described completion tubular column generally hangs sealing.
As optimizing, described in step 5, note is adopted in completion tubular column post intracavity under integral tubular column,
Note is adopted and is provided with production packer between integral tubular column outer wall and completion tubular column inwall.
As optimizing, each section of Liquid output of described horizontal ends controls strong with flow control apparatus
Degree is different and changes.
Designed by technique scheme, the invention provides one and be capable of thermal recovery level
Uniform steam injection in well steam injection stage net horizontal section pipe, outside pipe；Production phase net horizontal section equalizes
Production fluid, can play again the horizontal well thermal recovery equilibrium note mining method of sand-proof function simultaneously.
One heavy crude heat extraction horizontal well of the present invention equilibrium note mining method, enter under horizontal segment with
The tune stream control sand sieve pipe of flow control apparatus, utilizes high-temperature resistant tube external packer to net horizontal section
It is separated completion.Utilize note to adopt integral tubular column to carry out note and adopt, not be used under net horizontal section
Two-tube, or the instrument such as small size oil pipe, steam umbrella, flow control valve, easy construction is reliable.
During steam injection, flow control apparatus can be automatically adjusted the steam absorbing amount of each compartmented, can be automatically during production
Regulate each compartmented Liquid output, thus realize full horizontal segment equilibrium note and adopt, well section of improving the standard
Development degree, plays horizontal productivity advantage.
Accompanying drawing explanation
Below in conjunction with the accompanying drawings one heavy crude heat extraction horizontal well of the present invention equilibrium note mining method is made
Further illustrate:
Fig. 1 is the structural representation of the completion tubular column of this heavy crude heat extraction horizontal well equilibrium note mining method
Figure；
Fig. 2 is that the note of this heavy crude heat extraction horizontal well equilibrium note mining method adopts the structure of integral tubular column
Schematic diagram.
In figure: 8-completion tubular column, 1-hanger, 2-light sleeve pipe, 3-is high temperature resistant bore hole pipe covering
Stream control sand sieve pipe, 6-production packer, 7-is adjusted with flow control apparatus, 5-every device, 4-
Note adopts integral tubular column, 8-completion tubular column.
Detailed description of the invention
Step 1: before horizontal well completion, according to horizontal segment permeability, oil saturation distribution,
Net horizontal section is carried out segment design；
Step 2: the steam injection of the horizontal segment that combining step 1 is designed, production, Wellbore Flow,
Design level section traffic intensity；
Step 3: carry out sand control screen sand block accuracy Design according to the distribution of stratum fineness of sand；
Step 4: according to the design result of step 1 to 3, design and under enter completion tubular column 8；Institute
State completion tubular column 8 by hanger 1, light sleeve pipe 2, high temperature resistant bore hole external packer of pipe 3, band
The tune stream control sand sieve pipe 5 groups having flow control apparatus 4 connects and forms；Described high temperature resistant bore hole pipe
External packer 3 is Expansion sealing, and described hanging packer 1 hangs and seals, described completion tubular
Post 8 generally hangs sealing；
Step 5: design and under enter note and adopt integral tubular column 7, to net horizontal section steam injection, steam
Corresponding well section can be injected from each section of flow control apparatus；Described note adopts integral tubular column 7 times in complete
Well casing post 8 post intracavity, note is adopted and is provided with between integral tubular column 7 outer wall and completion tubular column 8 inwall
Production packer 6；
Step 6: tripping out note and adopt integral tubular column 7, lower conventional flow string produces, and respectively splits
Section production fluid can flow into pit shaft from respective flow control apparatus.
Each section of Liquid output of described horizontal ends controls intensity difference with flow control apparatus 4 and changes.
It can be that professional and technical personnel in the field are real that above-mentioned embodiment is intended to illustrate the present invention
Now or use, above-mentioned embodiment is modified for those skilled in the art will
It is apparent from, therefore the present invention includes but not limited to above-mentioned embodiment, any meet this power
Profit claim or description describe, and meet and principles disclosed herein and novelty, creativeness
The method of feature, technique, product, within each falling within protection scope of the present invention.
Claims (4)
1. a heavy crude heat extraction horizontal well equilibrium note mining method, is characterized in that: the method comprises the following steps,
Step 1: before horizontal well completion, according to horizontal segment permeability, oil saturation distribution, to horizontal well
Duan Jinhang segment design；
Step 2: the steam injection of the horizontal segment that combining step 1 is designed, production, Wellbore Flow, design level
Section traffic intensity；
Step 3: carry out sand control screen sand block accuracy Design according to the distribution of stratum fineness of sand；
Step 4: according to the design result of step 1 to 3, design and under enter completion tubular column (8)；
Step 5: design and under enter note and adopt integral tubular column (7), to net horizontal section steam injection, steam can be from each section
Flow control apparatus injects corresponding well section；
Step 6: tripping out note and adopt integral tubular column (7), lower conventional flow string produces, each segmentation section production fluid
Pit shaft can be flowed into from respective flow control apparatus.
Heavy crude heat extraction horizontal well the most according to claim 1 equilibrium note mining method, is characterized in that: step
Completion tubular column (8) described in rapid 4 is by hanger (1), light sleeve pipe (2), high temperature resistant bore hole external packer of pipe
(3), tune stream control sand sieve pipe (5) group with flow control apparatus (4) connects and forms；Described high temperature resistant naked
Eye external packer of pipe (3) is Expansion sealing, and described hanging packer (1) hangs and seals, described completion tubular
Post (8) generally hangs sealing.
Heavy crude heat extraction horizontal well the most according to claim 1 equilibrium note mining method, is characterized in that: step
Note described in rapid 5 is adopted in completion tubular column (8) post intracavity under integral tubular column (7), and note adopts integral tubular column (7)
Production packer (6) it is provided with between outer wall and completion tubular column (8) inwall.
Heavy crude heat extraction horizontal well the most according to claim 1 equilibrium note mining method, is characterized in that: described
Each section of Liquid output of horizontal ends controls intensity difference with flow control apparatus (4) and changes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610280362.XA CN105863588B (en) | 2016-04-28 | 2016-04-28 | A kind of heavy crude heat extraction horizontal well equilibrium note mining method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610280362.XA CN105863588B (en) | 2016-04-28 | 2016-04-28 | A kind of heavy crude heat extraction horizontal well equilibrium note mining method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105863588A true CN105863588A (en) | 2016-08-17 |
| CN105863588B CN105863588B (en) | 2019-07-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610280362.XA Expired - Fee Related CN105863588B (en) | 2016-04-28 | 2016-04-28 | A kind of heavy crude heat extraction horizontal well equilibrium note mining method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108547603A (en) * | 2018-02-28 | 2018-09-18 | 中国石油天然气股份有限公司 | A kind of water flood recovery integrated pipe column and water injection oil extraction method |
| CN110630234A (en) * | 2018-06-21 | 2019-12-31 | 中国石油天然气股份有限公司 | Steam injection method for heavy oil thermal recovery well |
| CN111411927A (en) * | 2020-03-30 | 2020-07-14 | 中国石油大学(华东) | Method for adjusting steam injection mode in steam huff and puff process |
| CN111946314A (en) * | 2019-05-15 | 2020-11-17 | 中国石油天然气股份有限公司 | Injection and extraction control pipe column for thickened oil horizontal well |
| CN115247543A (en) * | 2021-04-28 | 2022-10-28 | 中国石油化工股份有限公司 | Method for accurately injecting steam in fixed-point segmented water shutoff and dislocation mode of heavy oil reservoir horizontal well |
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| CN101892827A (en) * | 2010-04-30 | 2010-11-24 | 钟立国 | Optimized steam injection technology for horizontal well in segments |
| CN102108851A (en) * | 2010-12-30 | 2011-06-29 | 中国石油天然气股份有限公司 | Horizontal well steam injection method and system |
| CN202064920U (en) * | 2011-06-01 | 2011-12-07 | 中国石油天然气股份有限公司 | Pipe column for segmentation well completion technology of thickened oil horizontal well |
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| CN204283379U (en) * | 2014-12-08 | 2015-04-22 | 众通（北京）能源技术有限公司 | Screen casing completes oil well intelligent water control pipe post |
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2016
- 2016-04-28 CN CN201610280362.XA patent/CN105863588B/en not_active Expired - Fee Related
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101718190A (en) * | 2009-12-08 | 2010-06-02 | 安东石油技术（集团）有限公司 | Completed well body structure with temporary plugging function screen pipe and well completion method for suspending screen pipe at tail pipe |
| CN101892827A (en) * | 2010-04-30 | 2010-11-24 | 钟立国 | Optimized steam injection technology for horizontal well in segments |
| CN102108851A (en) * | 2010-12-30 | 2011-06-29 | 中国石油天然气股份有限公司 | Horizontal well steam injection method and system |
| CN202064920U (en) * | 2011-06-01 | 2011-12-07 | 中国石油天然气股份有限公司 | Pipe column for segmentation well completion technology of thickened oil horizontal well |
| CN102536172A (en) * | 2012-02-23 | 2012-07-04 | 石云夫 | Sectional production tubular pile for horizontal well |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108547603A (en) * | 2018-02-28 | 2018-09-18 | 中国石油天然气股份有限公司 | A kind of water flood recovery integrated pipe column and water injection oil extraction method |
| CN110630234A (en) * | 2018-06-21 | 2019-12-31 | 中国石油天然气股份有限公司 | Steam injection method for heavy oil thermal recovery well |
| CN110630234B (en) * | 2018-06-21 | 2021-11-02 | 中国石油天然气股份有限公司 | Steam injection method for heavy oil thermal recovery well |
| CN111946314A (en) * | 2019-05-15 | 2020-11-17 | 中国石油天然气股份有限公司 | Injection and extraction control pipe column for thickened oil horizontal well |
| CN111411927A (en) * | 2020-03-30 | 2020-07-14 | 中国石油大学(华东) | Method for adjusting steam injection mode in steam huff and puff process |
| CN111411927B (en) * | 2020-03-30 | 2022-07-29 | 中国石油大学(华东) | Method for adjusting steam injection mode in steam huff and puff process |
| CN115247543A (en) * | 2021-04-28 | 2022-10-28 | 中国石油化工股份有限公司 | Method for accurately injecting steam in fixed-point segmented water shutoff and dislocation mode of heavy oil reservoir horizontal well |
| CN115247543B (en) * | 2021-04-28 | 2024-04-09 | 中国石油化工股份有限公司 | Fixed-point segmented water shutoff and dislocation accurate steam injection method for horizontal well of heavy oil reservoir |
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| Publication number | Publication date |
|---|---|
| CN105863588B (en) | 2019-07-26 |
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Granted publication date: 20190726 |