CN109886559A - A kind of oil field Water Flooding Layer Fine structural interpretation and remaining oil comprehensive estimation method - Google Patents
A kind of oil field Water Flooding Layer Fine structural interpretation and remaining oil comprehensive estimation method Download PDFInfo
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- CN109886559A CN109886559A CN201910074798.7A CN201910074798A CN109886559A CN 109886559 A CN109886559 A CN 109886559A CN 201910074798 A CN201910074798 A CN 201910074798A CN 109886559 A CN109886559 A CN 109886559A
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Abstract
The invention discloses a kind of oil field Water Flooding Layer Fine structural interpretation and remaining oil comprehensive estimation methods, including the comprehensive identification of logging in water flooded layer and evaluation and the assessment of remaining oil；The comprehensive identification of the logging in water flooded layer is with evaluation the following steps are included: 11) establishing the log interpretation model of Study In Reservoir parameter；12) Water Flooding Layer is analyzed by the old and new's well logging control methods, resistivity reconstructing method or desalination Y-factor method Y method according to individual well formation testing, operation data and well-log information；The Remaining Oil Saturation Evaluation currently employs information specifically includes the following steps: 21) obtaining reservoir；22) distribution of reservoir remaining oil in the longitudinal direction is determined；Determine distribution of the reservoir remaining oil on section and in plane；23) open hole well and production well log test data are analyzed, the distribution of remaining oil is determined in conjunction with oil field Production development data, reservoir formation feature and sand-body distribution situation, this method can obtain remaining oil in the specific distribution of oil reservoir.
Description
Technical field
The invention belongs to In Oil Field Exploration And Development technical field, it is related to a kind of oil field Water Flooding Layer Fine structural interpretation and remaining oil is comprehensive
Appraisal procedure.
Background technique
Waterflooding extraction is widely used in oil field at present, into high and super-high water-cut stage, but still have 40% or so can
Crude oil extraction, output under the conditions of Yao Zhong High water cut, oil field development contradiction become to become increasingly conspicuous.Especially under fracture conditions
Low permeability reservoir, in the case where moisture content gradually increases, how to improve recovery ratio, increase oil reservoir ultimate output be current face
The significant problem faced.Therefore, it further should deeply recognize oil reservoir, analyze development situation, solve the problems, such as production, make full use of survey
Well, test data see clearly exploitation actuality, find out Remaining Oil Distribution, cost-effectively carry out taping the latent power for mid-late oilfield development
With adjustment work, the whole development level and final economic benefit in oil field are improved.
For typical slit formation low-permeability oil deposit, slit formation water breakthrough situation is than more serious, slit band water breakthrough and watered-out well
More, production loss is serious, and by prolonged Persisting exploitation, there are several exploitation problems more outstanding:
(1) reservoir heterogeneity is strong, fracture development, and water breakthrough well is more
(2) well pattern adaptability is poor, cannot establish effective displacement system
(3) low yield inefficient well number is more, and difficulty of governance is big
(4) strata pressure is unevenly distributed, and main side is big to pressure gap
In order to resolve Submerged Layer Logging Interpretation and Remaining Oil Saturation Evaluation problem, it is necessary to for the different characteristics of each block,
Using different logging techniquies, in conjunction with data such as geology, Production developments, Fine structural interpretation is carried out to logging in water flooded layer data, over the ground
Area's Remaining Oil Distribution is evaluated, and with the recovery ratio in High water cut area in raising, reduces the cost of operation.
Summary of the invention
It is an object of the invention to overcome the above-mentioned prior art, provide a kind of oil field Water Flooding Layer Fine structural interpretation and
Remaining oil comprehensive estimation method, this method can obtain remaining oil in the specific distribution of oil reservoir.
In order to achieve the above objectives, oil field Water Flooding Layer Fine structural interpretation and remaining oil comprehensive estimation method of the present invention include
The comprehensive identification of logging in water flooded layer and evaluation and the assessment of remaining oil；
The comprehensive identification of the logging in water flooded layer with evaluation the following steps are included:
11) lithology of oil field energy storage, physical property, electrical property and oil-gas possibility are analyzed, is determined under oil reservoir log parameter
Limit value establishes the log interpretation model of Study In Reservoir parameter；
12) log response characteristics before and after analysis water logging obtain low permeability reservoir water logging front and back lithology, electrical transitivity becomes
Law is logged well control methods, resistivity reconstructing method or light according to individual well formation testing, operation data and well-log information by the old and new
Change Y-factor method Y method to analyze Water Flooding Layer；
The Remaining Oil Saturation Evaluation specifically includes the following steps:
21) comparison block encryption Xin Jing and old well open hole well test data analyze reservoir change information, and it is current to obtain reservoir
Employ information；
22) individual well production profile, casing resistivity and wide energy domain chlorine power spectrum remaining oil test are analyzed, determines storage
The distribution of layer remaining oil in the longitudinal direction；Micro-seismic monitoring data between more well waterflood fronts and well is analyzed, determines that reservoir is surplus
Distribution of the excess oil on section and in plane；
23) open hole well and production well log test data are analyzed, in conjunction with oil field Production development data, reservoir structure
It makes feature and sand-body distribution situation determines the distribution of remaining oil.
In step 21), using flood pot test source investigation water logging electrical conduction mechanism, tried according to the research block well being collected into
The statistical result of oily and aqueous situation, chooses Encryption Well and Lao Jing, Encryption Well and Encryption Well carry out electrical property feature comparative analysis, will
Water Flooding Layer is divided into clear water region, clear water sewage borderline region and three, sewage region region.
The invention has the following advantages:
Oil field Water Flooding Layer Fine structural interpretation and remaining oil comprehensive estimation method of the present invention include that logging in water flooded layer is comprehensive
Identification and evaluation and the assessment of remaining oil, specifically, passing through the old and new's well logging pair according to individual well formation testing, operation data and well-log information
Ratio method, resistivity reconstructing method or desalination Y-factor method Y method analyze Water Flooding Layer；Open hole well and production well log are surveyed
Examination data is analyzed, and determines remaining oil in conjunction with oil field Production development data, reservoir formation feature and sand-body distribution situation
Distribution.It should be noted that the present invention combines based on oil reservoir geological research, and by it with dynamic monitoring, pass through
The test of individual well longitudinal direction remaining oil, are-al remaining oil test, single layer produces the test of liquid condition and the test of single pressure situation is further recognized
Know oil reservoir, to assess reservoir water drive status, studies remaining oil in the specific distribution of oil reservoir, provided for Tapping Residual Oil measure
Scientific guidance.
Detailed description of the invention
Fig. 1 is the principle of the present invention figure；
Fig. 2 is the cross plot that sieve examines 34-364 well long 6 lithology and physical property；
Fig. 3 is the cross plot of Encryption Well interval transit time and core porosity；
Fig. 4 is the cross plot of Encryption Well interval transit time and core permeability；
Fig. 5 is the cross plot for encrypting well density and core porosity；
Fig. 6 is the cross plot for encrypting well density and core permeability；
Fig. 7 is the cross plot of Encryption Well natural gamma and core porosity；
Fig. 8 is the cross plot of Encryption Well natural gamma and core permeability；
Fig. 9 is resistivity-interval transit time cross plot.
Specific embodiment
The invention will be described in further detail with reference to the accompanying drawing:
Oil field Water Flooding Layer Fine structural interpretation and remaining oil comprehensive estimation method of the present invention include that logging in water flooded layer is comprehensive
Identification and evaluation and the assessment of remaining oil；
The comprehensive identification of the logging in water flooded layer with evaluation the following steps are included:
11) lithology of oil field energy storage, physical property, electrical property and oil-gas possibility are analyzed, is determined under oil reservoir log parameter
Limit value establishes the log interpretation model of Study In Reservoir parameter；
To study 6 mouthfuls of rocks such as area day 132, sieve 37-40, sieve 34-30, Luo Jian 34-364, Luo Jian 36-361, Luo Jian 38-365
Based on heart Physical Property Analysis data, the relationship of reservoir properties and log, core porosity, permeability and density curve are analyzed
Correlation it is best, as shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8 and Fig. 9.
12) log response characteristics before and after analysis water logging obtain low permeability reservoir water logging front and back lithology, electrical transitivity becomes
Law is logged well control methods, resistivity reconstructing method or light according to individual well formation testing, operation data and well-log information by the old and new
Change Y-factor method Y method to analyze Water Flooding Layer；
The Remaining Oil Saturation Evaluation specifically includes the following steps:
21) comparison block encryption Xin Jing and old well open hole well test data analyze reservoir change information, and it is current to obtain reservoir
Employ information；
22) individual well production profile, casing resistivity and wide energy domain chlorine power spectrum remaining oil test are analyzed, determines storage
The distribution of layer remaining oil in the longitudinal direction；Micro-seismic monitoring data between more well waterflood fronts and well is analyzed, determines that reservoir is surplus
Distribution of the excess oil on section and in plane；
23) open hole well and production well log test data are analyzed, in conjunction with oil field Production development data, reservoir structure
It makes feature and sand-body distribution situation determines the distribution of remaining oil, to instruct Encryption Well well spacing and water drive dynamic to adjust, increase remaining
Oil is taped the latent power dynamics.
In step 21), using flood pot test source investigation water logging electrical conduction mechanism, tried according to the research block well being collected into
The statistical result of oily and aqueous situation, chooses Encryption Well and Lao Jing, Encryption Well and Encryption Well carry out electrical property feature comparative analysis, will
Water Flooding Layer is divided into clear water region, clear water sewage borderline region and three, sewage region region.
Principal direction of stress remaining oil oil reservoir section is analyzed, is recognized as follows:
High water cut interval is often corresponding with perforated zone, and reservoir High water cut situation itself is less；What reservoir was not unified
Oil-water interfaces, remaining oil are mainly enriched at the top of reservoir, or are present in the middle part of reservoir with sandwich format, reservoir bottom remaining oil compared with
It is few；
Reservoir properties play an important role in exploitation every interlayer, due to the difference of physical property, depositing every interlayer inside reservoir
It is complicated in the oil water relation of formation, grease gravitational differentiation principle is not followed；
By north orientation south, middle high aquifer formation becomes more, and remaining oil abundance reduces, and property is deteriorated remaining oil distribution in flakes；
Comprehensive analysis learns that low aqueous reservoir is more, is the main layer position of next step Tapping Residual Oil at shape is distributed in flakes.
Finally it should be noted that: the above examples are only used to illustrate the technical scheme of the present invention rather than its limitations, to the greatest extent
Pipe is described the invention in detail referring to above-described embodiment, it should be understood by those ordinary skilled in the art that: still may be used
With modifications or equivalent substitutions are made to specific embodiments of the invention, and repaired without departing from any of spirit and scope of the invention
Change or equivalent replacement, should all cover in present claims range.
Claims (2)
1. a kind of oil field Water Flooding Layer Fine structural interpretation and remaining oil comprehensive estimation method, which is characterized in that comprehensive including logging in water flooded layer
Close identification and evaluation and the assessment of remaining oil；
The comprehensive identification of the logging in water flooded layer with evaluation the following steps are included:
11) lithology of oil field energy storage, physical property, electrical property and oil-gas possibility are analyzed, determine the lower limit value of oil reservoir log parameter,
Establish the log interpretation model of Study In Reservoir parameter；
12) log response characteristics before and after analysis water logging obtain lithology, electrical transitivity variation rule before and after low permeability reservoir water logging
Rule passes through the old and new's well logging control methods, resistivity reconstructing method or desalination system according to individual well formation testing, operation data and well-log information
Number method method analyzes Water Flooding Layer；
The Remaining Oil Saturation Evaluation specifically includes the following steps:
21) comparison block encryption Xin Jing and old well open hole well test data analyze reservoir change information, obtain reservoir and currently employ
Information；
22) individual well production profile, casing resistivity and wide energy domain chlorine power spectrum remaining oil test are analyzed, determines that reservoir is surplus
The distribution of excess oil in the longitudinal direction；Micro-seismic monitoring data between more well waterflood fronts and well is analyzed, determines reservoir remaining oil
Distribution on section and in plane；
23) open hole well and production well log test data are analyzed, it is special in conjunction with oil field Production development data, reservoir formation
Sign and sand-body distribution situation determine the distribution of remaining oil.
2. Water Flooding Layer Fine structural interpretation in oil field according to claim 1 and remaining oil comprehensive estimation method, which is characterized in that step
It is rapid 21) in, using flood pot test source investigation water logging electrical conduction mechanism, according to the research block well formation testing being collected into and contain regimen
The statistical result of condition, chooses Encryption Well and Lao Jing, Encryption Well and Encryption Well carry out electrical property feature comparative analysis, and Water Flooding Layer is divided into
Clear water region, clear water sewage borderline region and three, sewage region region.
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Cited By (8)
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|---|---|---|---|---|
| CN110617062A (en) * | 2019-10-14 | 2019-12-27 | 西南石油大学 | Reservoir residual gas distribution characteristic analysis method |
| CN111025409A (en) * | 2019-12-23 | 2020-04-17 | 中国石油大学(北京) | Flooded layer evaluation method and device and storage medium |
| CN112561279A (en) * | 2020-12-09 | 2021-03-26 | 中国石油化工股份有限公司胜利油田分公司孤岛采油厂 | Identification method and system for high-water-consumption zone |
| CN113107464A (en) * | 2021-05-11 | 2021-07-13 | 中国石油天然气集团有限公司 | Horizontal well stepping type flooded layer identification logging method |
| CN114060014A (en) * | 2020-07-29 | 2022-02-18 | 中国石油天然气股份有限公司 | Method for analyzing exploitation characteristics of new well of old oil field |
| CN116066067A (en) * | 2021-12-30 | 2023-05-05 | 中国石油天然气集团有限公司 | Evaluation method for potential of residual oil in oil field and application thereof |
| CN117823123A (en) * | 2023-12-28 | 2024-04-05 | 中国石油天然气集团有限公司 | Method for describing residual oil in sandstone reservoir in high water content period |
| CN117823123B (en) * | 2023-12-28 | 2024-09-24 | 中国石油天然气集团有限公司 | Method for describing residual oil in sandstone reservoir in high water content period |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110617062A (en) * | 2019-10-14 | 2019-12-27 | 西南石油大学 | Reservoir residual gas distribution characteristic analysis method |
| CN110617062B (en) * | 2019-10-14 | 2021-02-23 | 西南石油大学 | Reservoir residual gas distribution characteristic analysis method |
| CN111025409A (en) * | 2019-12-23 | 2020-04-17 | 中国石油大学(北京) | Flooded layer evaluation method and device and storage medium |
| CN114060014A (en) * | 2020-07-29 | 2022-02-18 | 中国石油天然气股份有限公司 | Method for analyzing exploitation characteristics of new well of old oil field |
| CN112561279A (en) * | 2020-12-09 | 2021-03-26 | 中国石油化工股份有限公司胜利油田分公司孤岛采油厂 | Identification method and system for high-water-consumption zone |
| CN112561279B (en) * | 2020-12-09 | 2023-02-24 | 中国石油化工股份有限公司胜利油田分公司孤岛采油厂 | Identification method and system for high-water-consumption zone |
| CN113107464A (en) * | 2021-05-11 | 2021-07-13 | 中国石油天然气集团有限公司 | Horizontal well stepping type flooded layer identification logging method |
| CN113107464B (en) * | 2021-05-11 | 2024-05-07 | 中国石油天然气集团有限公司 | Horizontal well stepping type water flooded layer identification logging method |
| CN116066067A (en) * | 2021-12-30 | 2023-05-05 | 中国石油天然气集团有限公司 | Evaluation method for potential of residual oil in oil field and application thereof |
| CN116066067B (en) * | 2021-12-30 | 2024-02-02 | 中国石油天然气集团有限公司 | Evaluation method for potential of residual oil in oil field and application thereof |
| CN117823123A (en) * | 2023-12-28 | 2024-04-05 | 中国石油天然气集团有限公司 | Method for describing residual oil in sandstone reservoir in high water content period |
| CN117823123B (en) * | 2023-12-28 | 2024-09-24 | 中国石油天然气集团有限公司 | Method for describing residual oil in sandstone reservoir in high water content period |
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Application publication date: 20190614 |