CN105957147A - Strong edge-bottom water oil reservoir defining method - Google Patents
Strong edge-bottom water oil reservoir defining method Download PDFInfo
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- CN105957147A CN105957147A CN201610306900.8A CN201610306900A CN105957147A CN 105957147 A CN105957147 A CN 105957147A CN 201610306900 A CN201610306900 A CN 201610306900A CN 105957147 A CN105957147 A CN 105957147A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 81
- 238000000034 method Methods 0.000 title claims abstract description 29
- 239000011148 porous material Substances 0.000 claims abstract description 25
- 238000004088 simulation Methods 0.000 claims abstract description 4
- 238000012937 correction Methods 0.000 claims description 3
- 239000003921 oil Substances 0.000 description 21
- 238000011161 development Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 239000013589 supplement Substances 0.000 description 3
- 239000010779 crude oil Substances 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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Abstract
The invention discloses a strong edge-bottom water oil reservoir defining method comprising the following steps: (1) finely describing a target oil reservoir, and building an oil reservoir fine geological model; (2) on the basis of step (1), carrying out numerical simulation of the oil reservoir to modify and perfect the oil reservoir fine geological model; (3) using the modified and perfected oil reservoir fine geological model obtained in step (2) to calculate the underground pore volume of the edge-bottom water region and the underground pore volume of the oil region in the target oil reservoir; and (4) calculating the water body multiple of the underground pore volume of the edge-bottom water region and the underground pore volume of the oil region based on the underground pore volume of the water region and the underground pore volume of the oil region, and judging whether the candidate oil reservoir is a strong edge-bottom water oil reservoir or not according to a strong edge-bottom water oil reservoir defining standard. The problem that the standard for judging whether the edge water energy of an oil reservoir is strong or weak is not clear is solved, and normalized and standardized strong edge-bottom water oil reservoir judgment is realized. The method has the characteristics of being simple in principle, high in operability, effective and practical, and the like, and thus, has very good popularization and application values.
Description
Technical field
The present invention relates to bottom and edge water classification and bottom and edge water is greatly improved crude oil waterflood recovery efficiency factor method, specifically a kind of strong bottom and edge water confining method.
Background technology
Finding during the actual development of oil field, the power of edge-bottom water energy often affects the water flooding effectiveness of oil reservoir.But, which bottom and edge water needs to carry out supplementary energy and develops, which bottom and edge water need not supplement energy and is obtained with preferable development effectiveness, i.e. meet the bottom and edge water of what condition and be properly termed as strong bottom and edge water, and energy can be supplemented can obtain preferable water flooding effectiveness.Forefathers are through statistics, it is proposed that water oil volume ratio (i.e. underground pore volume shared by edge-bottom water and the ratio of the underground pore volume shared by You Qu (not including irreducible water)) >=100, fall ＜ 0.05 MPa/(10 of lamination fifty-fifty of every extraction 1% oil in place4T), elastic productivity ratio ＞ 100 000 t/MPa, zero dimension elasticity yield than >=30 etc. index evaluate or differentiate strong bottom and edge water natural energy abundance whether.Research shows, These parameters is in actual application or the process of calculating is complicated, and also depends critically upon the quality of mining site data, or is only capable of considering the classification of the original reservoir natural energy, it is not directed to discrimination standard or the method for the strategy choice problems of development phase, only exploration phase.In order to identify real strong bottom and edge water, it is achieved energy need not be supplemented and can obtain the purpose of preferable water flooding effectiveness, solve in the urgent need to new strong bottom and edge water identification technology, the waterflood recovery efficiency factor of bottom and edge water is greatly improved further.In view of value the most both at home and abroad still without corresponding discrimination standard or method, seriously hinder the research and development of dissimilar bottom and edge water difference development technique, constrain the benefit exploitation of bottom and edge water primary, secondary.For the problems referred to above, through exploring, the present invention proposes and utilizes oil reservoir water body multiple to define whether oil reservoir exists the method for discrimination of strong edge-bottom water.
Summary of the invention
It is an object of the invention to provide a kind of strong bottom and edge water confining method, solve screening or the indefinite problem of the condition that defines being suitable for utilizing self edge-bottom water energy exploitation oil reservoir, evade forefathers' method of discrimination and may be only available for the shortcoming such as exploration phase or initial stage of development natural energy evaluation, it is achieved that strong bottom and edge water has differentiated work standardization, the purpose of standardization.
In order to reach above-mentioned purpose, the present invention can adopt the following technical scheme that, strong bottom and edge water confining method, and its step includes: (1) carries out meticulous pool description to target reservoir, sets up oil reservoir detailed geological model；(2) on the basis of step (1), reservoir numerical simulation is carried out to revise, to improve this oil reservoir detailed geological model；(3) utilize the correction obtained in step (2), improve after this oil reservoir detailed geological model ask for underground pore volume and the oil underground pore volume shared by district in region shared by edge-bottom water in target reservoir；And (4) utilize and obtain the water body multiple of the underground pore volume in region and the oil underground pore volume shared by district shared by pool, You Qu underground pore volume calculating edge-bottom water in step (3), and with reference to strong bottom and edge water defining standard, it is judged that whether this candidate reservoir is strong bottom and edge water.
This strong bottom and edge water discriminant criterion includes, water body multiple, i.e. the ratio of this underground, oil reservoir pool pore volume and You Qu underground pore volume.
This strong bottom and edge water defining standard includes, this oil reservoir water body multiple ＞ 100.
Strong bottom and edge water confining method in the present invention, application simplicity, crude oil water drive recovery efficiency technique research is greatly improved provides a set of reliable judgement and evaluation standard for carrying out bottom and edge water classification and bottom and edge water.The bottom and edge water meeting These parameters can apply the edge-bottom water energy of self to realize the exploitation of economic benefit efficient, high, simultaneously, it is possible to form strong edge-bottom water for the more weak oil reservoir of edge-bottom water energy drive to realize increasing reservoir water drive control reserve, effectively supplement energy, expand water drive and involve, slow down limit overflow and enter with bottom water coning, effectively alleviate the 5 big targets offer technological borrowing such as wastewater disposition problem by optimizing energy supplement mode water filling or re-injection oilfield sewage.As can be seen here, this technological invention popularizing application prospect is wide, remarkable economic and social benefits.
Accompanying drawing explanation
Fig. 1 is the flow chart of the strong bottom and edge water confining method of the present invention；
Fig. 2 be the present invention a specific embodiment in bottom and edge water water body multiple discrimination standard figure.
Detailed description of the invention
Detailed description for the present invention and technology contents, coordinate accompanying drawing to be described as follows, but accompanying drawing only provides reference and purposes of discussion, is not used for being any limitation as the present invention.
As it is shown in figure 1, the strong bottom and edge water confining method of the present invention, its step is as follows:
In step 101, target reservoir being carried out meticulous pool description, set up oil reservoir detailed geological model, the purpose of this step is to set up the reservoir model that precision is of a relatively high, and for obtaining pool, You Qu underground pore volume lays the first stone.Flow process enters step 102.
In step 102, based on target reservoir detailed geological model, utilizing reservoir numerical simulation means, fully examination dynamic and static data is repeatedly revised, is improved oil reservoir detailed geological model.The purpose of this step is to make geological model can represent actual oil reservoir as far as possible.Flow process enters into step 103.
In step 103, utilize the correction obtained in step 102, improve after oil reservoir detailed geological model obtain target reservoir volume parameter.In one embodiment, oil reservoir volume parameter includes pool in target reservoir, You Qu underground pore volume.Flow process enters into step 104.
In step 104, utilize target reservoir pool, the You Qu underground pore volume obtained in step 103, calculate target reservoir water body multiple.Flow process enters into step 104.
In step 105, the target reservoir volume factor obtained in step 103 is utilized to judge whether target reservoir is strong bottom and edge water.If target reservoir volume factor is more than 100, then target reservoir volume is strong bottom and edge water.Flow process terminates.
For the strong indefinite situation of bottom and edge water discrimination standard, the present invention utilizes water body multiple to define strong bottom and edge water, it is provided that one is convenient defines strong bottom and edge water method.The method not only strong bottom and edge water differentiates work standardization, the purpose of standardization, but also can be that the more weak oil reservoir of edge-bottom water energy realizes efficiently, economic development gives technical research enlightenment.
Claims (3)
1. one kind strong bottom and edge water confining method, it is characterised in that the method comprises the steps:
(1) target reservoir is carried out meticulous pool description, set up oil reservoir detailed geological model；
(2) on the basis of step (1), reservoir numerical simulation is carried out to revise, to improve this oil reservoir detailed geological model；
(3) utilize the correction obtained in step (2), improve after this oil reservoir detailed geological model ask for underground pore volume and the oil underground pore volume shared by district in region shared by edge-bottom water in target reservoir；And
(4) utilize and step (3) obtains the water body multiple of the underground pore volume in region and the oil underground pore volume shared by district shared by pool, You Qu underground pore volume calculating edge-bottom water, and with reference to strong bottom and edge water defining standard, it is judged that whether this candidate reservoir is strong bottom and edge water.
Strong bottom and edge water confining method the most according to claim 1, it is characterised in that this water body multiple is the underground pore volume ratio with the underground pore volume shared by oil district in region shared by edge-bottom water in target reservoir.
Strong bottom and edge water confining method the most according to claim 1, it is characterised in that strong bottom and edge water discrimination standard is the water body multiple ＞ 100 of target reservoir.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610306900.8A CN105957147A (en) | 2016-05-11 | 2016-05-11 | Strong edge-bottom water oil reservoir defining method |
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| CN201610306900.8A CN105957147A (en) | 2016-05-11 | 2016-05-11 | Strong edge-bottom water oil reservoir defining method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107366526A (en) * | 2017-07-25 | 2017-11-21 | 中国石油天然气股份有限公司 | A kind of screening technique for the compact oil reservoir that suitable carbon dioxide mixed phase drives |
| CN109424354A (en) * | 2017-08-29 | 2019-03-05 | 中国石油化工股份有限公司 | The calculation method and system of bottom water reservoir single well-controlled water oil volume ratio |
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| CN103993862A (en) * | 2014-02-12 | 2014-08-20 | 中国石油天然气股份有限公司 | Stratification developing method for complex fault block thin oil reservoir |
| CN104100245A (en) * | 2013-04-08 | 2014-10-15 | 中国石油化工股份有限公司 | Method for screening and evaluating artificial edge water drive fault block oil reservoir |
| CN104699954A (en) * | 2015-01-30 | 2015-06-10 | 中国地质大学（武汉） | Calibration method for oil recovery rate of karst-fissure-cavity carbonatite reservoir |
-
2016
- 2016-05-11 CN CN201610306900.8A patent/CN105957147A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104100245A (en) * | 2013-04-08 | 2014-10-15 | 中国石油化工股份有限公司 | Method for screening and evaluating artificial edge water drive fault block oil reservoir |
| CN103993862A (en) * | 2014-02-12 | 2014-08-20 | 中国石油天然气股份有限公司 | Stratification developing method for complex fault block thin oil reservoir |
| CN104699954A (en) * | 2015-01-30 | 2015-06-10 | 中国地质大学（武汉） | Calibration method for oil recovery rate of karst-fissure-cavity carbonatite reservoir |
Non-Patent Citations (1)
| Title |
|---|
| M.A. KLINS ET AL.: "A Polynomial Approach to the van Everdingen-Hurst Dimensionless Variables for Water Encroachment", 《SPE RESERVOIR ENGINEERING》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107366526A (en) * | 2017-07-25 | 2017-11-21 | 中国石油天然气股份有限公司 | A kind of screening technique for the compact oil reservoir that suitable carbon dioxide mixed phase drives |
| CN109424354A (en) * | 2017-08-29 | 2019-03-05 | 中国石油化工股份有限公司 | The calculation method and system of bottom water reservoir single well-controlled water oil volume ratio |
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Application publication date: 20160921 |