CN104932014A - Triassic system clastic rock hydrocarbon reservoir identification method - Google Patents
Triassic system clastic rock hydrocarbon reservoir identification method Download PDFInfo
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- CN104932014A CN104932014A CN201510296140.2A CN201510296140A CN104932014A CN 104932014 A CN104932014 A CN 104932014A CN 201510296140 A CN201510296140 A CN 201510296140A CN 104932014 A CN104932014 A CN 104932014A
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Abstract
The invention relates to a triassic system clastic rock hydrocarbon reservoir identification method. The method comprises the following steps: 1, calibrating earthquake data; 2, establishing an identification and evaluation method system; 3, performing speed analyzing and modeling; and 4, carrying out research on an oil gas detection technology. According to the triassic system clastic rock hydrocarbon reservoir identification method, wide tests and popularization application are carried out in the Tahe oilfield by use of an earthquake amplitude identification clastic rock hydrocarbon reservoir technology, and remarkable achievements and effects are obtained. The identification method provided by the invention can improve the productivity proportion.
Description
Technical field
The present invention relates to a kind of recognition methods of Triassic system clastic oil-gas pools.
Background technology
The exploration engineering of Tahe clastic oil-gas pools mainly rests on the knowledge for macrostructure class traps such as anticlines
Not and analysis level, major technique utilizes three dimensional seismic data to carry out structure elucidation, method is simple, it is superficial to be familiar with, become diagram technology research, thin sand RESERVOIR RECOGNITION, trap description and Comprehensive Appraisal Study very weak especially for hidden-type trap structures such as structure with lower amplitude trap, lithologic traps, Triassic system earthquake, synthetic geology research is in earlier stage caused to lag behind drilling prospection, conservation trap wretched insufficiency, can not meet Production requirement far away.The subject matter that original technology exists in Tahe clastic oil-gas pools discrimination and evaluation shows as following several respects:
1) disguise of Triassic system low amplitude, lithologic deposit and the circumscribed contradiction of seismic data resolution more and more outstanding;
2) for the seismic interpretation complex art of structure, flagstone lithologic trap a little, want continuous Innovation and development, as improved low order fault Explanation Accuracy, the practicable structure by faults control, lithologic trap, petroclastic rock lateral speed change in Tahe Region is larger in addition, velocity field build a precision, directly affects ultra-deep structure with lower amplitude and hidden-type trap and find and implement;
3) the seismic response features research after sandstone reservoir and oily thereof is not deep enough, mudstone foundation or sandstone phase transformation in sand layers, together with the tunning effect of the seismic event that flagstone causes is interweaved with the former seismic response features, identification there is certain difficulty.Therefore seismic attribute abstraction (amplitude, frequency, reflection strength etc.) and analysis and research should be goed deep into, utilize the reservoir of fixed well, hydrocarbon zone calibration result, drilling well statistical study, and combination model just drills analysis result, set up the criterion of identification of reservoir and oil gas, favourable sandbody distribution feature and oil-gas possibility are identified.
Summary of the invention
The technical problem to be solved in the present invention is: in order to overcome the deficiencies in the prior art, provides a kind of recognition methods of Triassic system clastic oil-gas pools.
The technical solution adopted for the present invention to solve the technical problems is: a kind of recognition methods of Triassic system clastic oil-gas pools, comprises the following steps:
1) demarcate seismic data: according to brill, well-log information, forward simulation is carried out to models such as the oily sandstone of tomography, oily structure with lower amplitude, various stacked relation, and carries out result demarcation in conjunction with theogram;
2) set up discrimination and evaluation method system: by experiment and analyze, set up with seismic data fine stratum calibration, meticulous relevant fault interpretation, automatic tracing faults comparison, etc. time section, fine velocity analysis, seismic amplitude extraction, the multiparameter exponential family Triassic system Low amplitude trap discrimination and evaluation that is major technique technical staple;
3) velocity analysis and modeling: according to work area concrete condition, carries out velocity analysis and sets up rate pattern;
4) oil and gas testing technique research: by technology such as seismic amplitude, pattern-recognition, multiparameter clusters, the oil-gas possibility of direct-detection trap.
As preferably, step 3) in, the method for velocity analysis mainly contains three kinds, is respectively average velocity fitting process, layer position control methods and modeling tomographic.
As preferably, step 4) in, set up vertical Triassic system oily amplitude threshold quantitative criteria by transversely dividing point oil in three-dimensional work area (or being subdivided into little trap block again), longitudinal direction.
As preferably, step 1) in, the window during extraction of seismic amplitude attribute, must pass through theogram, is decided by oily thickness in the thickness of sand body or sand body.
The invention has the beneficial effects as follows, the recognition methods of this Triassic system clastic oil-gas pools, utilize seismic amplitude identification clastic oil-gas pools technology to carry out extensive experimentation in system in Tahe Oilfield and applied, achieve significant achievement and effect.Recognition methods of the present invention can improve production capacity ratio.
Embodiment
A recognition methods for Triassic system clastic oil-gas pools, comprises the following steps:
1) demarcate seismic data: according to brill, well-log information, forward simulation is carried out to models such as the oily sandstone of tomography, oily structure with lower amplitude, various stacked relation, and carries out result demarcation in conjunction with theogram;
2) set up discrimination and evaluation method system: by experiment and analyze, set up with seismic data fine stratum calibration, meticulous relevant fault interpretation, automatic tracing faults comparison, etc. time section, fine velocity analysis, seismic amplitude extraction, the multiparameter exponential family Triassic system Low amplitude trap discrimination and evaluation that is major technique technical staple;
3) velocity analysis and modeling: according to work area concrete condition, carries out velocity analysis and sets up rate pattern;
4) oil and gas testing technique research: by technology such as seismic amplitude, pattern-recognition, multiparameter clusters, the oil-gas possibility of direct-detection trap.
As preferably, step 3) in, the method for velocity analysis mainly contains three kinds, is respectively average velocity fitting process, layer position control methods and modeling tomographic.
As preferably, step 4) in, set up vertical Triassic system oily amplitude threshold quantitative criteria by transversely dividing point oil in three-dimensional work area (or being subdivided into little trap block again), longitudinal direction.
As preferably, step 1) in, the window during extraction of seismic amplitude attribute, must pass through theogram, is decided by oily thickness in the thickness of sand body or sand body.
By drilling well seismic data determination stratigraphic horizon, there are three kinds of modes:
1, drilling well source book is utilized to import earthquake base station;
2, earthquake base station forms earthquake original graph;
3, carry out accurately drawing of stratigraphic horizon according to knowledge and experience and form seismic horizon figure.
Compared with prior art, the recognition methods of this Triassic system clastic oil-gas pools, utilizes seismic amplitude identification clastic oil-gas pools technology to carry out extensive experimentation in system in Tahe Oilfield and applied, achieves significant achievement and effect.Recognition methods of the present invention can improve production capacity ratio.
With above-mentioned according to desirable embodiment of the present invention for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this invention technological thought, can carry out various change and amendment completely.The technical scope of this invention is not limited to the content on instructions, must determine its technical scope according to right.
Claims (4)
1. a recognition methods for Triassic system clastic oil-gas pools, is characterized in that, comprises the following steps:
1) demarcate seismic data: according to brill, well-log information, forward simulation is carried out to models such as the oily sandstone of tomography, oily structure with lower amplitude, various stacked relation, and carries out result demarcation in conjunction with theogram;
2) set up discrimination and evaluation method system: by experiment and analyze, set up with seismic data fine stratum calibration, meticulous relevant fault interpretation, automatic tracing faults comparison, etc. time section, fine velocity analysis, seismic amplitude extraction, the multiparameter exponential family Triassic system Low amplitude trap discrimination and evaluation that is major technique technical staple;
3) velocity analysis and modeling: according to work area concrete condition, carries out velocity analysis and sets up rate pattern;
4) oil and gas testing technique research: by technology such as seismic amplitude, pattern-recognition, multiparameter clusters, the oil-gas possibility of direct-detection trap.
2. the recognition methods of Triassic system clastic oil-gas pools as claimed in claim 1, is characterized in that, step 3) in, the method for velocity analysis mainly contains three kinds, is respectively average velocity fitting process, layer position control methods and modeling tomographic.
3. the recognition methods of Triassic system clastic oil-gas pools as claimed in claim 1, it is characterized in that, step 4) in, set up vertical Triassic system oily amplitude threshold quantitative criteria by transversely dividing point oil in three-dimensional work area (or being subdivided into little trap block again), longitudinal direction.
4. the recognition methods of Triassic system clastic oil-gas pools as claimed in claim 1, is characterized in that, step 1) in, the window during extraction of seismic amplitude attribute, must pass through theogram, is decided by oily thickness in the thickness of sand body or sand body.
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| CN201510296140.2A CN104932014A (en) | 2015-06-02 | 2015-06-02 | Triassic system clastic rock hydrocarbon reservoir identification method |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102373923A (en) * | 2010-08-20 | 2012-03-14 | 中国石油天然气股份有限公司 | Reservoir stratum identification method |
| CN102466815A (en) * | 2010-11-08 | 2012-05-23 | 中国石油化工股份有限公司 | Triassic clastic rock petroleum reservoir identification method |
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- 2015-06-02 CN CN201510296140.2A patent/CN104932014A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102373923A (en) * | 2010-08-20 | 2012-03-14 | 中国石油天然气股份有限公司 | Reservoir stratum identification method |
| CN102466815A (en) * | 2010-11-08 | 2012-05-23 | 中国石油化工股份有限公司 | Triassic clastic rock petroleum reservoir identification method |
Non-Patent Citations (1)
| Title |
|---|
| 李宗杰等: "塔河油田三叠系隐蔽圈闭识别与评价技术", 《中南大学学报(自然科学版)》 * |
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Application publication date: 20150923 |
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