CN105863588B - A kind of heavy crude heat extraction horizontal well equilibrium note mining method - Google Patents
A kind of heavy crude heat extraction horizontal well equilibrium note mining method Download PDFInfo
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- CN105863588B CN105863588B CN201610280362.XA CN201610280362A CN105863588B CN 105863588 B CN105863588 B CN 105863588B CN 201610280362 A CN201610280362 A CN 201610280362A CN 105863588 B CN105863588 B CN 105863588B
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000000605 extraction Methods 0.000 title claims abstract description 14
- 238000005065 mining Methods 0.000 title claims abstract description 14
- 238000010793 Steam injection (oil industry) Methods 0.000 claims abstract description 34
- 238000004519 manufacturing process Methods 0.000 claims abstract description 21
- 239000004576 sand Substances 0.000 claims abstract description 17
- 239000007788 liquid Substances 0.000 claims abstract description 6
- 230000035699 permeability Effects 0.000 claims abstract description 5
- 239000012530 fluid Substances 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 9
- 239000000725 suspension Substances 0.000 claims description 5
- 230000011218 segmentation Effects 0.000 claims 1
- 238000011084 recovery Methods 0.000 abstract description 6
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 230000005465 channeling Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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 present invention relates to a kind of heavy crude heat extraction horizontal well equilibriums to infuse mining method comprising following steps before horizontal well completion, are distributed according to horizontal segment permeability, oil saturation, carry out segment design to net horizontal section；The steam injection for the horizontal segment that combining step 1 is designed, production, Wellbore Flow, design level section traffic intensity；It is distributed according to stratum fineness of sand and carries out sand control screen sand block accuracy Design；According to the design result of step 1 to 3, simultaneously tripping in completion tubular column is designed；It designs and tripping in note adopts integral tubular column, to net horizontal section steam injection, steam can inject corresponding well section from each section of flow control apparatus；It acts note and adopts integral tubular column, lower routine flow string production, each section production fluid of dividing can flow into pit shaft from respective flow control apparatus.Providing one kind can be realized in horizontal well thermal recovery steam injection stage net horizontal section pipe, manages outer uniform steam injection；Production phase net horizontal section equilibrium produces liquid, while can play the horizontal well thermal recovery equilibrium note mining method of sand-proof function again.
Description
Technical field
The present invention relates to a kind of heavy crude heat extraction horizontal well equilibriums to infuse mining method.
Background technique
During heavy crude heat extraction horizontal well steam injection, since net horizontal section has certain length, conventional steam injection string only has
One steam injection point, is unevenly distributed pressure in horizontal segment tubing string, in addition reservoir heterogeneity, be easy to cause horizontal segment to inhale vapour not
, it forms part to advance by leaps and bounds, channeling occurs, keeps steam excessive, causes capacity loss.Domestic certain viscous crude field horizontal well thermal recovery monitoring
Analysis shows when horizontal well steam injection that " channeling " is very serious, and 70% or more there are different degrees of channeling, horizontal segments to employ not
Equal well accounts for about 80%, seriously affects heavy crude heat extraction horizontal well production effect.Currently, both at home and abroad to horizontal well thermal recovery horizontal segment into
The uniform steam injection of row, mainly takes two ways, i.e. net horizontal section Double-pipe gas-injection and multiple spot steam injection.Net horizontal section Double-pipe gas-injection skill
Art uses well head " double suspensions ", tube-in-tube steam injection mode, steam is injected from two channels, and one is from small size without box cupling
Oil pipe is injected into horizontal segment toe-end, one be from vacuum heat insulation tube and small size integral joint tubing annular injection to net horizontal section with
End；Flow control is carried out by ground flow mediation valve door, realizes two controls for going out vapour point different displacements.Net horizontal section multiple spot note
Vapour technology is that multiple steam injection valves are installed on horizontal segment steam injection string, is separated between each steam injection valve using steam umbrella, is made each
Net horizontal section forms independent steam injection unit；By each steam injection point steam injection amount of steam injection valve regulation horizontal segment, to reach horizontal segment
The purpose of uniform steam injection.The shortcomings that net horizontal section Double-pipe gas-injection is that only there are two steam injection points, is adjusted to the uniform steam injection of long horizontal sections
Ability is limited.Multiple spot steam injection mode due to outside screen casing horizontal segment be not split, steam still easily by low pressure, hypertonic interval inhale
It receives, uniformly suction modulation effect practical to net horizontal section is limited.Two kinds of steam injection mode net horizontal sections produce hydraulic control system dress without balanced
It sets, is influenced by horizontal segment permeability contrast, Wellbore Flow pressure drop, when production still results in net horizontal section and employs unevenness, influences
Horizontal productivity.Two kinds of steam injection modes are both needed in horizontal segment tripping in steam injection string, and working procedure is complicated, and operating risk is high.
Summary of the invention
The technical problem to be solved by the present invention is to how overcome the drawbacks described above of the prior art, a kind of heavy crude heat extraction water is provided
Mining method is infused in horizontal well equilibrium.
In order to solve the above technical problems, this heavy crude heat extraction horizontal well equilibrium note mining method includes the following steps,
Step 1: before horizontal well completion, being distributed according to horizontal segment permeability, oil saturation, net horizontal section is segmented
Design；
Step 2: the steam injection for the horizontal segment that combining step 1 is designed, production, Wellbore Flow, design level section traffic intensity；
Step 3: being distributed according to stratum fineness of sand and carry out sand control screen sand block accuracy Design；
Step 4: according to the design result of step 1 to 3, designing simultaneously tripping in completion tubular column；
Step 5: designing and tripping in note adopts integral tubular column, to net horizontal section steam injection, steam can be from each section of flow control apparatus
Inject corresponding well section；
Step 6: acting note and adopt integral tubular column, lower routine flow string production, each section production fluid of dividing can be from respective flowing
Control device flows into pit shaft.
As optimizing, completion tubular column described in step 4 is by hanger, light casing, high temperature resistant naked eye external packer of pipe, band
There is the tune flow control sand sieve pipe group of flow control apparatus to connect；The high temperature resistant naked eye external packer of pipe is Expansion sealing, described
Hanging packer suspension sealing, the completion tubular column generally hang sealing.
As optimizing, note described in step 5 is adopted intracavitary in completion tubular column column under integral tubular column, and note adopts integral tubular column outer wall
Production packer is equipped between completion tubular column inner wall.
As optimizing, each section of Liquid output of the horizontal ends is different with flow control apparatus control intensity and changes.
It designs through the above technical solution, the present invention provides one kind can be realized horizontal well thermal recovery steam injection stage horizontal well
In section pipe, manage outer uniform steam injection；Production phase net horizontal section equilibrium produces liquid, while can play the horizontal well thermal recovery of sand-proof function again
Equilibrium note mining method.
Mining method is infused in a kind of heavy crude heat extraction horizontal well equilibrium of the present invention, has the tune of flow control apparatus in horizontal segment tripping in
Flow control sand sieve pipe has been separated well to net horizontal section using high-temperature resistant tube external packer.Integral tubular column is adopted using note to be infused
It adopts, does not have to net horizontal section tripping in is two-tube or the tools such as small size oil pipe, steam umbrella, flow control valve, it is easy for construction reliable.
Flow control apparatus can automatically adjust the steam absorbing amount of each compartmented when steam injection, and when production can automatically adjust each compartmented Liquid output,
To realize that full horizontal segment equilibrium note is adopted, well section of improving the standard development degree plays horizontal productivity advantage.
Detailed description of the invention
A kind of present invention heavy crude heat extraction horizontal well equilibrium note mining method is described further with reference to the accompanying drawing:
Fig. 1 is the structural schematic diagram of the completion tubular column of this heavy crude heat extraction horizontal well equilibrium note mining method；
Fig. 2 is that the note of this heavy crude heat extraction horizontal well equilibrium note mining method adopts the structural schematic diagram of integral tubular column.
In figure: 8- completion tubular column, 1- hanger, 2- light casing, 3- high temperature resistant naked eye external packer of pipe, 4- are with flowing control
Device processed, 5- tune flow control sand sieve pipe, 6- production packer, 7- note adopt integral tubular column, 8- completion tubular column.
Specific embodiment
Step 1: before horizontal well completion, being distributed according to horizontal segment permeability, oil saturation, net horizontal section is segmented
Design；
Step 2: the steam injection for the horizontal segment that combining step 1 is designed, production, Wellbore Flow, design level section traffic intensity；
Step 3: being distributed according to stratum fineness of sand and carry out sand control screen sand block accuracy Design；
Step 4: according to the design result of step 1 to 3, designing simultaneously tripping in completion tubular column 8；The completion tubular column 8 is by hanging
Device 1, light casing 2, high temperature resistant naked eye external packer of pipe 3,5 groups of pipe of tune flow control sand sieve with flow control apparatus 4 connect；Institute
Stating high temperature resistant naked eye external packer of pipe 3 is Expansion sealing, and the suspension of hanging packer 1 sealing, the completion tubular column 8 is generally
Suspension sealing；
Step 5: designing and tripping in note adopts integral tubular column 7, to net horizontal section steam injection, steam can be from each section of flow control apparatus
Inject corresponding well section；It is described note adopt it is intracavitary in 8 column of completion tubular column under integral tubular column 7, note adopt 7 outer wall of integral tubular column and completion tubular column
Production packer 6 is equipped between 8 inner walls；
Step 6: acting note and adopt integral tubular column 7, lower routine flow string production, each section production fluid of dividing can be from respective flowing
Control device flows into pit shaft.
Each section of Liquid output of the horizontal ends controls intensity difference with flow control apparatus 4 and changes.
Above embodiment, which is intended to illustrate the present invention, to be realized or use for professional and technical personnel in the field, to above-mentioned
Embodiment, which is modified, will be readily apparent to those skilled in the art, therefore the present invention includes but is not limited to
Above embodiment, it is any to meet the claims or specification description, meet with principles disclosed herein and novelty,
The method of inventive features, technique, product, fall within the scope of protection of the present invention.
Claims (2)
1. mining method is infused in a kind of heavy crude heat extraction horizontal well equilibrium, it is characterized in that: this approach includes the following steps,
Step 1: before horizontal well completion, being distributed according to horizontal segment permeability, oil saturation, segmentation is carried out to net horizontal section and is set
Meter；
Step 2: the steam injection for the horizontal segment that combining step 1 is designed, production, Wellbore Flow, design level section traffic intensity；
Step 3: being distributed according to stratum fineness of sand and carry out sand control screen sand block accuracy Design；
Step 4: according to the design result of step 1 to 3, designing simultaneously tripping in completion tubular column (8), the completion tubular column (8) is by hanging
Device (1), light casing (2), high temperature resistant naked eye external packer of pipe (3), the tune flow control sand sieve pipe (5) for having flow control apparatus (4)
Group connects；The high temperature resistant naked eye external packer of pipe (3) is Expansion sealing, hanger (1) the suspension sealing, the complete well
Tubing string (8) generally hangs sealing；
Step 5: designing and tripping in note adopts integral tubular column (7), to net horizontal section steam injection, steam can be infused from each section of flow control apparatus
Enter corresponding well section；It is described note adopt it is intracavitary in completion tubular column (8) column under integral tubular column (7), note adopt integral tubular column (7) outer wall and complete well
Production packer (6) are equipped between tubing string (8) inner wall；
Step 6: acting note and adopt integral tubular column (7), lower routine flow string production, each section production fluid of dividing can be from respective flowing control
Device processed flows into pit shaft.
2. mining method is infused in heavy crude heat extraction horizontal well equilibrium according to claim 1, it is characterized in that: the smooth casing (2)
Each section of Liquid output of horizontal ends is different with flow control apparatus (4) control intensity 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 |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610280362.XA 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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| Publication Number | Publication Date |
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| CN105863588A CN105863588A (en) | 2016-08-17 |
| CN105863588B true CN105863588B (en) | 2019-07-26 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108547603B (en) * | 2018-02-28 | 2021-03-30 | 中国石油天然气股份有限公司 | Water injection and oil extraction integrated tubular column and water injection and oil extraction method |
| 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 |
| CN111946314B (en) * | 2019-05-15 | 2022-12-02 | 中国石油天然气股份有限公司 | Injection and extraction control pipe column for thickened oil horizontal well |
| 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 |
| 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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| CN202064920U (en) * | 2011-06-01 | 2011-12-07 | 中国石油天然气股份有限公司 | Sectional well completion process technology tubular column for thickened oil horizontal well |
| CN102536172A (en) * | 2012-02-23 | 2012-07-04 | 石云夫 | Sectional production tubular pile for horizontal well |
| CN102852502A (en) * | 2012-04-18 | 2013-01-02 | 中国石油天然气股份有限公司 | Intelligent steam distribution process pipe column of horizontal steam injection well |
| CN104481484A (en) * | 2014-12-26 | 2015-04-01 | 东营市福利德石油科技开发有限责任公司 | Horizontal well segmented intermittent steam huff and puff injection-production integrated pipe column |
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| CN101718190B (en) * | 2009-12-08 | 2012-10-24 | 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 |
| CN204041030U (en) * | 2014-05-15 | 2014-12-24 | 成都北方石油勘探开发技术有限公司 | With the horizontal well in segments completion tubular column of the close screen casing of variable orifice |
| CN204283367U (en) * | 2014-12-08 | 2015-04-22 | 众通（北京）能源技术有限公司 | Horizontal well Intelligent water-controlled completion tubular column |
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Patent Citations (6)
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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 | Sectional well completion process technology tubular column for thickened oil horizontal well |
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| CN102852502A (en) * | 2012-04-18 | 2013-01-02 | 中国石油天然气股份有限公司 | Intelligent steam distribution process pipe column of horizontal steam injection well |
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| CN105863588A (en) | 2016-08-17 |
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Granted publication date: 20190726 |