CN103711482A - Method for quickly identifying clastic rock reservoir based on two well log overlapped picture - Google Patents
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Abstract
A method for quickly identifying a clastic rock reservoir based on a two well log overlapped picture includes the following steps that (1) according to a clastic rock stratum, an interval transit time parameter and a spontaneous potential parameter of the clastic rock stratum are obtained in a drilling hole through a logging instrument; (2) a relatively thick mud rock development section and a possible compact layer section are determined by referring to rock core or cutting logging data obtained through a special sampler in the drilling hole, and a mud rock base line is determined by combination with a spontaneous potential logging curve; (3) the spontaneous potential logging curve and an interval transit time curve are overlapped in the reverse direction according to a logging curve overlapping principle, and it is required that the two logging curves are basically overlapped on the mud rock base line portion and the compact layer section; (4) in the overlapped picture of the spontaneous potential logging curve and the interval transit time curve, an amplitude difference between the two curves on the separation portion of the two curves is determined according to the overlapping and separation relation between the two curves, and whether the storage physical property of the reservoir is good or not is judged according to the amplitude difference of the two curves. The method has the advantages of being easy and convenient to use, high in identification accuracy and high in speed.
Description
Technical field
The invention belongs to Geophysical Logging field, be specifically related to a kind of method of identifying fast clastic reservoir rock based on two kinds of log overlay chart.
Background technology
Along with improving constantly of exploration and development degree, the geologic objective complexity and the well log interpretation difficulty that face are also increasing, as the dual-pore medium reservoirs of complex lithology body sandstone, Complicated Pore Structures reservoir constantly occurs, cause in the past as identification lithology and Main Basis and the log interpretation technology of evaluating reservoir, more and more be difficult to meet the integrated needs of exploration and development under complex geological condition, in well log interpretation process, exist reservoir is misread to the phenomenon that is interpreted as non-reservoir class.But at present also not for complex lithology and preserve characteristic Fast Evaluation, select respectively lithology, comparatively responsive log parameter and the curvilinear characteristic thereof of physical property response, and then set up the interpretation model that geology-log parameter is combined constraint, to improve the precision of reservoir grading.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the object of this invention is to provide a kind of method of identifying fast clastic reservoir rock based on two kinds of log overlay chart, based on natural potential and interval transit time curve overlay chart, identify fast clastic reservoir rock, that the method has is simple and convenient, accuracy of identification is high and fireballing feature.
For achieving the above object, the technical solution used in the present invention is: a kind of method of identifying fast clastic reservoir rock based on two kinds of log overlay chart, comprises the following steps:
The first, first for Clastic Stratum of Country Rocks, in boring, by use logger, obtain interval transit time parameter, the natural potential parameter of Clastic Stratum of Country Rocks;
The second, with reference to passing through to use special obtained rock core or the sieve residue log data of sampler in boring, definite relatively thick mud stone is grown section and possible fine and close interval, and determines shale line in conjunction with nutural potential logging curve;
The 3rd, according to log overlay method principle, natural potential, interval transit time curve are carried out oppositely overlapping, require at shale line position and fine and close interval, two kinds of logs overlap substantially;
The 4th, in natural potential, two kinds of log overlay chart of interval transit time, according to the overlapping and separation relation between two curves, at the position of two kinds of curve separation, determine the amplitude difference between two curves, and according to amplitude extent between curve, the quality relatively of judgement reservoir reservoir physical, general amplitude difference is large, and storage and collection performance is relatively good, otherwise, amplitude difference is little, and storage and collection performance is poor.
advantage of the present invention is:
Compared with prior art, the present invention is based on natural potential and acoustic travel time logging curves overlapped figure and process and identify fast clastic reservoir rock, consider pore characteristic and the filtration properties of clastic reservoir rock simultaneously, also comprise following advantage:
(1) pay attention to the comparatively sensitive parameter of the degree of porosity of reservoir itself, Permeability Parameters log response preferably;
(2) utilize mud stone, compacted zone to carry out constraint curve overlay chart, directly respond reservoir porosity, permeability and variation thereof, improved the precision of log overlay chart reflection reservoir storage and collection performance.
In a word, the present invention has developed the efficiency of clastic reservoir rock logging evaluation.
Accompanying drawing explanation
Fig. 1 is that the nutural potential logging curve of the embodiment of the present invention 1 is determined shale line figure, and the figure that utilizes natural potential, acoustic travel time logging curves overlapped figure feature identification clastic reservoir rock.
Fig. 2 is that the nutural potential logging curve of the embodiment of the present invention 2 is determined shale line figure, and the figure that utilizes natural potential, acoustic travel time logging curves overlapped figure feature identification clastic reservoir rock.
The specific embodiment
Below in conjunction with embodiment, the present invention is described in further detail.
Embodiment 1:
It is example (Fig. 1) that the X well in Middle of Ordos Basin Yi You district of take extends group leader's 10 oil reservoir groups:
A method of identifying fast clastic reservoir rock based on two kinds of log overlay chart, comprises the following steps:
The first, first for Clastic Stratum of Country Rocks, in boring, by use logger, obtain interval transit time parameter, the natural potential parameter of Clastic Stratum of Country Rocks;
The second, with reference to passing through to use special obtained rock core or the sieve residue log data of sampler in boring, definite relatively thick mud stone is grown section and possible fine and close interval, and determines shale line in conjunction with nutural potential logging curve; In Fig. 1, mainly according to the thicker mud stone of 2059.3 ~ 2064.5m well section position, determine shale line position and see black straight dashed line in figure, according to the fine and close interval of 2078.3 ~ 2080.0m, determine curve coincidence position;
The 3rd, according to log overlay method principle, natural potential, interval transit time curve are carried out oppositely overlapping, require at shale line position and fine and close interval, two kinds of logs overlap substantially; In mud stone section 2059.3 ~ 2064.5m well section, compacted zone 2078.3 ~ 2080.0m well section, natural potential, interval transit time curve overlap substantially;
The 4th, in natural potential, two kinds of log overlay chart of interval transit time, according to the overlapping and separation relation between two curves, at the position of two kinds of curve separation, determine the amplitude difference between two curves, and according to amplitude extent between curve, the quality relatively of judgement reservoir reservoir physical, according to the amplitude difference between two kinds of curves, comparative analysis rock core physical property degree of porosity, permeability analysis result are known, amplitude difference between general two curves is large, storage and collection performance is relatively good, and between curve, amplitude difference is little, and storage and collection performance is poor.
Embodiment 2:
It is example (Fig. 2) that the X well in Middle of Ordos Basin Yi You district of take extends group leader's 9 oil reservoir groups:
A method of identifying fast clastic reservoir rock based on two kinds of log overlay chart, comprises the following steps:
The first, first for Clastic Stratum of Country Rocks, in boring, by use logger, obtain interval transit time parameter, the natural potential parameter of Clastic Stratum of Country Rocks;
The second, with reference to passing through to use special obtained rock core or the sieve residue log data of sampler in boring, definite relatively thick mud stone is grown section and possible fine and close interval, and determines shale line in conjunction with nutural potential logging curve; In Fig. 2, mainly according to the thicker mud stone of 1825.3 ~ 1834.3m well section position, determine shale line position and see black straight dashed line in figure, according to the fine and close interval of 1823.0 ~ 1825.3m, 1819.9 ~ 1823.4m, determine curve coincidence position;
The 3rd, according to log overlay method principle, natural potential, interval transit time curve are carried out oppositely overlapping, require at shale line position and fine and close interval, two kinds of logs overlap substantially; In mud stone section 1825.3 ~ 1834.3m well section, fine and close interval 1823.0 ~ 1825.3m, 1819.9 ~ 1823.4m well section, natural potential, interval transit time curve overlap substantially;
The 4th, in natural potential, two kinds of log overlay chart of interval transit time, according to the overlapping and separation relation between two curves, at the position of two kinds of curve separation, determine the amplitude difference between two curves, and according to amplitude extent between curve, the quality relatively of judgement reservoir reservoir physical, according to the amplitude difference between two kinds of curves, comparative analysis rock core physical property degree of porosity, permeability analysis result are known, amplitude difference between general two curves is large, storage and collection performance is relatively good, and between curve, amplitude difference is little, and storage and collection performance is poor.
Principle of the present invention:
In view of logging signal is the concentrated expression of formation lithology, physical property, water-based, oiliness, so for lithology, physical property, pore structure, the changeable oily district of formation water system complex, can meticulous reflection complicated reservoirs lithology, the log parameter of physical property and oiliness feature thereof is also complicated and changeable, and in log response parameter, lithology and physical property characteristic thereof explain it is the basis that well logging oiliness is explained.Therefore, for clastic reservoir rock, the concept based on reservoir in reservoir geology, more focus on pore character and the filtration properties thereof of rock, so, this just need to both focus on individual event logging signal and focus on again many information comprehensive analysis of logging well, and came fast its degree of porosity, permeability to be reflected.So, based on natural potential, acoustic travel time logging principle, set up the method for identifying fast reservoir according to natural potential, acoustic travel time logging curves overlapped figure feature.The essence of the method is: for clastic reservoir rock, getting rid of under the prerequisite of drilling fluid, depth of stratum impact, spontaneous potential curve is positive relationship with respect to size and the rock stratum filtration properties of the abnormal amplitude of its shale line deflection, the filtration properties of general rock stratum is better, the abnormal amplitude of its spontaneous potential curve is larger, the abnormal amplitude reflection of spontaneous potential curve permeability, meanwhile, for clastic reservoir rock, the size of interval transit time curve numerical value, has fine positive correlation with rock stratum degree of porosity, the height of acoustic travel time logging numerical value, the degree of porosity of reflection reservoir, therefore, utilize above-mentioned natural potential, two kinds of curves of interval transit time, according to log overlay chart principle, two kinds of curves are carried out oppositely overlapping, requirement is compacted zone position at mud stone position and significantly, two kinds of logs of natural potential and interval transit time overlap substantially, namely near the shale line of nutural potential logging curve, make two kinds of logs substantially overlapping, so at reservoir position, owing to thering is certain porosity and permeability, cause spontaneous potential curve to have obvious negative anomaly, interval transit time curve reduces compared with mud stone position and increases compared with compacted zone position, between two curves, there is amplitude difference, if physical property is better, amplitude difference between two curves is larger.The method is mainly based on reservoir concept, from the principle of natural potential, acoustic travel time logging, utilizes the principle of log overlay method simultaneously, two kinds of curves is carried out to reverse overlapping processing fast direct and connect reflection reservoir pore space and filtration properties.
Claims (1)
1. based on two kinds of log overlay chart, identify fast a method for clastic reservoir rock, it is characterized in that, comprise the following steps:
The first, first for Clastic Stratum of Country Rocks, in boring, by use logger, obtain interval transit time parameter, the natural potential parameter of Clastic Stratum of Country Rocks;
The second, with reference to passing through to use special obtained rock core or the sieve residue log data of sampler in boring, definite relatively thick mud stone is grown section and possible fine and close interval, and determines shale line in conjunction with nutural potential logging curve;
The 3rd, according to log overlay method principle, natural potential, interval transit time curve are carried out oppositely overlapping, require at shale line position and fine and close interval, two kinds of logs overlap substantially;
The 4th, in natural potential, two kinds of log overlay chart of interval transit time, according to the overlapping and separation relation between two curves, at the position of two kinds of curve separation, determine the amplitude difference between two curves, and according to amplitude extent between curve, the quality relatively of judgement reservoir reservoir physical, general amplitude difference is large, and storage and collection performance is relatively good, otherwise, amplitude difference is little, and storage and collection performance is poor.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103993871A (en) * | 2014-05-08 | 2014-08-20 | 中国石油化工股份有限公司 | Method and device for processing well logging information of thin interbed stratums in standardization mode |
| CN104678455A (en) * | 2014-12-12 | 2015-06-03 | 中国石油化工股份有限公司 | Terrestrial fracture-cavern reservoir identification method |
| CN105064986A (en) * | 2015-07-24 | 2015-11-18 | 中国石油天然气集团公司 | Method for building reservoir four-property relationship spectrum by using conventional well detection and logging information |
| CN105089662A (en) * | 2015-07-24 | 2015-11-25 | 中国石油天然气股份有限公司 | Method and system for correcting well logging synthetical histogram of carbonate rock stratum |
| CN105525917A (en) * | 2014-09-28 | 2016-04-27 | 中国石油化工股份有限公司 | Method for identifying reservoir and method for identifying fluid type in reservoir |
| CN105988137A (en) * | 2015-02-11 | 2016-10-05 | 中国石油化工股份有限公司 | Well logging characteristic curve reconstruction method of gravel rock based on rock core scale well logging |
| CN107065011A (en) * | 2017-06-22 | 2017-08-18 | 东北石油大学 | A kind of curve frequencies fusion method applied to continental basins reservoir inversion |
| CN110320572A (en) * | 2018-03-29 | 2019-10-11 | 中国石油化工股份有限公司 | A kind of method and system identifying sedimentary facies |
| CN110320573A (en) * | 2018-03-29 | 2019-10-11 | 中国石油化工股份有限公司 | A kind of log parameter construction method and system reflecting reservoir productivity |
| CN111487691A (en) * | 2020-01-19 | 2020-08-04 | 西北大学 | Method for quantitatively identifying lithology and sand body structure of tight sandstone reservoir |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4369497A (en) * | 1970-02-02 | 1983-01-18 | Schlumberger Technology Corp. | Machine method and apparatus for determining the presence and location of hydrocarbon deposits within a subsurface earth formation |
| CN1664616A (en) * | 2005-04-07 | 2005-09-07 | 西北大学 | Method for forecasting oil gas in reservoir bed of constant velocity argillite formation |
| CN103132993A (en) * | 2013-03-26 | 2013-06-05 | 西北大学 | Method for gradually recognizing oil layer and water layer in low-permeability complex lithologic oil deposit |
-
2014
- 2014-01-06 CN CN201410003860.0A patent/CN103711482B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4369497A (en) * | 1970-02-02 | 1983-01-18 | Schlumberger Technology Corp. | Machine method and apparatus for determining the presence and location of hydrocarbon deposits within a subsurface earth formation |
| CN1664616A (en) * | 2005-04-07 | 2005-09-07 | 西北大学 | Method for forecasting oil gas in reservoir bed of constant velocity argillite formation |
| CN103132993A (en) * | 2013-03-26 | 2013-06-05 | 西北大学 | Method for gradually recognizing oil layer and water layer in low-permeability complex lithologic oil deposit |
Non-Patent Citations (3)
| Title |
|---|
| 周银玲等: "气水层测井识别方法在苏里格气田东南部盒8段应用", 《地下水》 * |
| 韩品龙等: "陕北东部延长气区上古生界储层测井属性特征分析", 《现代地质》 * |
| 黄薇: "鄂尔多斯盆地吴堡—永宁油区长9油水层识别", 《中国优秀硕士学位论文全文数据库 基础科学辑》 * |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103993871A (en) * | 2014-05-08 | 2014-08-20 | 中国石油化工股份有限公司 | Method and device for processing well logging information of thin interbed stratums in standardization mode |
| CN103993871B (en) * | 2014-05-08 | 2017-02-15 | 中国石油化工股份有限公司 | Method and device for processing well logging information of thin interbed stratums in standardization mode |
| CN105525917A (en) * | 2014-09-28 | 2016-04-27 | 中国石油化工股份有限公司 | Method for identifying reservoir and method for identifying fluid type in reservoir |
| CN104678455A (en) * | 2014-12-12 | 2015-06-03 | 中国石油化工股份有限公司 | Terrestrial fracture-cavern reservoir identification method |
| CN105988137B (en) * | 2015-02-11 | 2018-01-09 | 中国石油化工股份有限公司 | Logging character curve Reconstruction method of the sand-conglomerate body based on Core-Calibrated Logging |
| CN105988137A (en) * | 2015-02-11 | 2016-10-05 | 中国石油化工股份有限公司 | Well logging characteristic curve reconstruction method of gravel rock based on rock core scale well logging |
| CN105089662A (en) * | 2015-07-24 | 2015-11-25 | 中国石油天然气股份有限公司 | Method and system for correcting well logging synthetical histogram of carbonate rock stratum |
| CN105064986A (en) * | 2015-07-24 | 2015-11-18 | 中国石油天然气集团公司 | Method for building reservoir four-property relationship spectrum by using conventional well detection and logging information |
| CN105089662B (en) * | 2015-07-24 | 2018-04-06 | 中国石油天然气股份有限公司 | The bearing calibration of carbonate formation well logging composite columnar section and system |
| CN107065011A (en) * | 2017-06-22 | 2017-08-18 | 东北石油大学 | A kind of curve frequencies fusion method applied to continental basins reservoir inversion |
| CN107065011B (en) * | 2017-06-22 | 2018-11-02 | 东北石油大学 | A kind of curve frequencies fusion method applied to continental basins reservoir inversion |
| CN110320572A (en) * | 2018-03-29 | 2019-10-11 | 中国石油化工股份有限公司 | A kind of method and system identifying sedimentary facies |
| CN110320573A (en) * | 2018-03-29 | 2019-10-11 | 中国石油化工股份有限公司 | A kind of log parameter construction method and system reflecting reservoir productivity |
| CN110320572B (en) * | 2018-03-29 | 2021-04-23 | 中国石油化工股份有限公司 | Method and system for identifying sedimentary facies |
| CN110320573B (en) * | 2018-03-29 | 2021-05-25 | 中国石油化工股份有限公司 | Logging parameter construction method and system reflecting reservoir productivity |
| CN111487691A (en) * | 2020-01-19 | 2020-08-04 | 西北大学 | Method for quantitatively identifying lithology and sand body structure of tight sandstone reservoir |
| CN111487691B (en) * | 2020-01-19 | 2022-06-24 | 西北大学 | Method for quantitatively identifying lithology and sand body structure of tight sandstone reservoir |
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