CN110043244A - A kind of determination method of sandstone oil reservoir water injection well acidizing radius - Google Patents
A kind of determination method of sandstone oil reservoir water injection well acidizing radius Download PDFInfo
- Publication number
- CN110043244A CN110043244A CN201910317410.1A CN201910317410A CN110043244A CN 110043244 A CN110043244 A CN 110043244A CN 201910317410 A CN201910317410 A CN 201910317410A CN 110043244 A CN110043244 A CN 110043244A
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- China
- Prior art keywords
- guttation
- well
- acidizing
- radius
- pressure
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Links
- 238000000034 method Methods 0.000 title claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 11
- 238000002347 injection Methods 0.000 title claims abstract description 9
- 239000007924 injection Substances 0.000 title claims abstract description 9
- 238000011161 development Methods 0.000 abstract description 2
- 238000005259 measurement Methods 0.000 abstract description 2
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 5
- 238000004088 simulation Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
- 239000002349 well water 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
-
- 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
-
- 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
- E21B47/00—Survey of boreholes or wells
-
- 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
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
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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)
- Geophysics (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Measuring Arrangements Characterized By The Use Of Fluids (AREA)
Abstract
The invention belongs to oil field development technical field, in particular to a kind of determination method of sandstone oil reservoir water injection well acidizing radius, the present invention solves the problems, such as that individual well acidizing radius determines and is difficult to low cost, specific aim measurement.The following steps are included: a, return to under-injected well guttation operation, guttation volume is recorded；B, closing well restores pressure, and records pressure data and time, until pressure is stablized；C, figure is temporally thrown to pressure data, and chooses straightway and carries out linear fit, obtain straight slope；D, acidizing radius is calculated using guttation volume and straight slope.The present invention returns guttation amount and pressure data after guttation operation by monitoring water injection well, calculates under-injected well acidizing radius, method is simple, low in cost, individual well is with strong points, to the determination of acidizing radius suitable for acidizing treatment.
Description
Technical field: the invention belongs to oil field development technical field, in particular to a kind of sandstone oil reservoir water filling well acidizing half
The determination method of diameter.
Background technique: conventional determination acidizing radius method can be divided into test simulation method and two kinds of well testing method: the former uses
Artificial core or natural core simulation tamper converse the pollution condition of block water filling interval according to core plugging rule
Acidizing radius, however influenced by reservoir heterogeneity, this method individual well specific aim is poor；The table that the latter is found out using well test analysis
Skin coefficient, permeability and formation pressure calculation acidizing radius, this method need to carry out well testing operation, there are operating expenses height and account for
The disadvantage of well time length.In order to solve the deficiency in prior art, the present invention returns spitting after guttation operates by monitoring water injection well
Water and pressure data calculate under-injected well acidizing radius, and method is simple, low in cost, individual well is with strong points, does not need
Well testing operation is carried out, to the determination of acidizing radius suitable for acidizing treatment.
Summary of the invention: the object of the present invention is to provide can carry out the one of specific aim measurement economical, efficient and at low cost
The determination method of kind sandstone oil reservoir water injection well acidizing radius.
A kind of determination method of sandstone oil reservoir water injection well acidizing radius, comprising the following steps:
A, under-injected well is carried out returning guttation operation, guttation volume Q is read by flowmeter；
B, closing well restores pressure, and records pressure data and time, reads until the stable time T of pressure；
C, figure is temporally thrown to pressure data, and chooses straightway and carries out linear fit, obtain straight slope KTiltedly；
D, by guttation volume Q and straight slope KTiltedlyBring formula intoIt calculates and determines acidizing radius.
Wherein:
R-acidizing radius, m
Q-guttation volume, m3
B-volume factor, m3/m3
π-pi, value 3.14
- porosity, decimal
T-pressure stable time, h
H-perforation thickness, m
Ct- system compressibility, MPa-1
KTiltedly- straight slope, MPa/h
In the above method, the equipment that step a is related to includes tank car, hard pipeline, connector, clip, flowmeter, it is desirable that flow
It counts precision and is higher than 0.01m3；The equipment that step b is related to is digital display type electronic pressure gauge, it is desirable that precision is higher than 0.01MPa.
The present invention compared with the conventional method, has the advantages that
1) individual well production procedure is relied on, specific aim is good；
2) it is short to account for the well time for simple process；
3) low in cost without dynamic tubing string operation.
Detailed description of the invention: Fig. 1 is the pressue-graph of certain oil field N well in the embodiment of the present invention, K in figureTiltedlyFor the straight line of fitting
Slope.
Specific embodiment: below with reference to embodiment, present invention is further described in detail:
The determination method of certain oil field N well acidizing radius, N well are a bite under-injected well in certain oil field, and well perforation thickness H is
12.3 meters, porosityIt is 0.22, composite compressibility of reservoir CtIt is 1.6 × 10-3MPa-1, injection water volume coefficient B is 1m3/
m3.The well acidizing radius is determined in accordance with the following steps:
A, under-injected well is carried out returning guttation operation, reading guttation volume Q by flowmeter is 0.6m3；
B, closing well restores pressure, and records pressure data and time, reads until being the pressure stable time after half an hour；
C, figure is temporally thrown to pressure data, and chooses straightway and carries out linear fit, obtain straight slope KTiltedlyFor
It is as shown in Figure 1 to throw figure situation by 16.28MPa/h；
It d, is 0.6m by guttation volume Q3With straight slope KTiltedlyFormula is brought into for 16.28MPa/hMeter
It calculates and determines acidizing radius
Claims (1)
1. a kind of determination method of sandstone oil reservoir water injection well acidizing radius, it is characterised in that: the following steps are included:
A, under-injected well is carried out returning guttation operation, guttation volume Q is read by flowmeter；
B, closing well restores pressure, and records pressure data and time, reads until the stable time T of pressure；
C, figure is temporally thrown to pressure data, and chooses straightway and carries out linear fit, obtain straight slope KTiltedly；
D, by guttation volume Q and straight slope KTiltedlyBring formula intoIt calculates and determines acidizing radius.
Wherein:
R-acidizing radius, m
Q-guttation volume, m3
B-volume factor, m3/m3
π-pi, value 3.14
- porosity, decimal
T-pressure stable time, h
H-perforation thickness, m
Ct- system compressibility, MPa-1
KTiltedly- straight slope, MPa/h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910317410.1A CN110043244B (en) | 2019-04-19 | 2019-04-19 | Method for determining acidizing radius of sandstone oil reservoir water injection well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910317410.1A CN110043244B (en) | 2019-04-19 | 2019-04-19 | Method for determining acidizing radius of sandstone oil reservoir water injection well |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110043244A true CN110043244A (en) | 2019-07-23 |
| CN110043244B CN110043244B (en) | 2021-10-15 |
Family
ID=67278006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910317410.1A Active CN110043244B (en) | 2019-04-19 | 2019-04-19 | Method for determining acidizing radius of sandstone oil reservoir water injection well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110043244B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110454152A (en) * | 2019-08-12 | 2019-11-15 | 成都北方石油勘探开发技术有限公司 | The non-homogeneous injury skin factor calculation method of fracture-type reservoir |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120125603A1 (en) * | 2010-11-19 | 2012-05-24 | Willingham Thomas W | Systems and Methods For Enhanced Waterfloods |
| US20150378052A1 (en) * | 2014-06-27 | 2015-12-31 | Saudi Arabian Oil Company | Methods and systems for estimating sizes and effects of wellbore obstructions in water injection wells |
| CN105257248A (en) * | 2015-09-25 | 2016-01-20 | 中国石油天然气股份有限公司 | Negative-pressure exhausting blockage relieving method for low-permeability oilfield wastewater reinjection wells |
| CN108182300A (en) * | 2017-12-07 | 2018-06-19 | 中国石油化工股份有限公司华北油气分公司石油工程技术研究院 | A kind of determining method and device of open-hole horizontal well matrix acidifying radius |
| CN109403934A (en) * | 2018-09-26 | 2019-03-01 | 中国石油天然气股份有限公司 | A kind of determination method of Reservoir Acidization radius |
-
2019
- 2019-04-19 CN CN201910317410.1A patent/CN110043244B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120125603A1 (en) * | 2010-11-19 | 2012-05-24 | Willingham Thomas W | Systems and Methods For Enhanced Waterfloods |
| US20150378052A1 (en) * | 2014-06-27 | 2015-12-31 | Saudi Arabian Oil Company | Methods and systems for estimating sizes and effects of wellbore obstructions in water injection wells |
| US20180003858A1 (en) * | 2014-06-27 | 2018-01-04 | Saudi Arabian Oil Company | Methods and systems for estimating sizes and effects of wellbore obstructions in water injection wells |
| CN105257248A (en) * | 2015-09-25 | 2016-01-20 | 中国石油天然气股份有限公司 | Negative-pressure exhausting blockage relieving method for low-permeability oilfield wastewater reinjection wells |
| CN108182300A (en) * | 2017-12-07 | 2018-06-19 | 中国石油化工股份有限公司华北油气分公司石油工程技术研究院 | A kind of determining method and device of open-hole horizontal well matrix acidifying radius |
| CN109403934A (en) * | 2018-09-26 | 2019-03-01 | 中国石油天然气股份有限公司 | A kind of determination method of Reservoir Acidization radius |
Non-Patent Citations (3)
| Title |
|---|
| 唐泽玮等: "姬塬油田注水井清垢解堵设计优化研究", 《钻采工艺》 * |
| 李晓平等: "水平井分段酸化后表皮因子研究新方法", 《西南石油大学（自然科学版）》 * |
| 陆小兵等: "一种解除低渗透油田注水井井底滤饼堵塞的新方法", 《钻采工艺》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110454152A (en) * | 2019-08-12 | 2019-11-15 | 成都北方石油勘探开发技术有限公司 | The non-homogeneous injury skin factor calculation method of fracture-type reservoir |
| CN110454152B (en) * | 2019-08-12 | 2020-12-01 | 成都北方石油勘探开发技术有限公司 | Method for calculating heterogeneous damage skin coefficient of fractured reservoir |
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| CN110043244B (en) | 2021-10-15 |
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