Quantitative description method for torsional/tensional geological structure

A geological structure and torsional technology, applied in the field of oilfield exploration and development, can solve the problems of limited research on torsional basins, unclear understanding of oil-rich subsags, and low success rate of drilling in torsional basins

Active Publication Date: 2016-03-02
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

[0002] Dynamic and static quantitative analysis of torsional geological structure, based on torsional basins, with strong segmentation, complex stratigraphic deposits, multi-provenance, and multi-sedimentary systems; the understanding of oil-rich depressions is unclear, especially in th

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  • Quantitative description method for torsional/tensional geological structure
  • Quantitative description method for torsional/tensional geological structure
  • Quantitative description method for torsional/tensional geological structure

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[0015] In order to make the above and other objects, features and advantages of the present invention more comprehensible, preferred examples are listed below and described in detail in conjunction with the accompanying drawings.

[0016] Such as figure 1 as shown, figure 1 It is a flow chart of the quantitative description method of the twisted geological structure of the present invention.

[0017] In step 101, according to the analysis of the geometric characteristics of faults, combined with the tectonic stress field and fault formation simulation, the torsional structural style of the basin is determined. In one embodiment, the static research work fracture analysis is carried out for the structure of Huimin Sag: the statistics of the fault trend of each reflection layer and the compilation of the rose diagram. Fracture classification, fault tendency, fault strike statistics, plane-section structural style analysis, fracture complexity statistics, basement fracture anal...

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Abstract

The invention provides a quantitative description method for a torsional/tensional geological structure. The quantitative description method for the torsional/tensional geological structure comprises the steps of a step 1, analyzing according to fault geometric features, forming an analog according to a tectonic stress field and a fault, determining the type of a basin torsional/tensional structure; a step 2, establishing a basin and fault forming mechanism and a static model; a step 3, performing dynamic quantitative analysis, obtaining the development characteristic of the basin torsional/tensional structure, performing quantitative calculation for obtaining the vertical displacement and horizontal displacement of a torsional/tensional fault in each key period, and meeting a quantization standard; and a step 4, establishing a dynamic geological structure for torsional/tensional fault of the basin, and defining control function for a basin sedimentary reservoir and oil-and-gas migration and entrapment. The quantitative description method for the torsional/tensional geological structure has functions of defining control function of the torsion/tension structure to deposition, reservoiring and entrapment, settling a problem of low well drilling success rate in torsional/tensional basins, and realizing profound measuring for oil-gas exploration on similar basins.

Description

technical field [0001] The invention relates to the technical field of oil field exploration and development, in particular to a quantitative description method of twisted geological structure. Background technique [0002] The dynamic and static quantitative analysis of the torsional geological structure is based on the torsional basin, which is highly segmented, with complex stratigraphic deposits, multi-provenance, and multi-sedimentary systems. In the Zhang Basin, such as the Huimin Sag, the exploration level is relatively low, and the drilling success rate in the twisted Basin is low. On the other hand, the research on the twisted basin is extremely limited at home and abroad. For this reason, we invented a new quantitative description method of torsional geological structure, which solved the above technical problems. Contents of the invention [0003] The purpose of the present invention is to provide a quantitative description method for the twisted geological st...

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Application Information

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IPC IPC(8): G01V1/30
Inventor 刘惠民李文涛李趁义王宝言刘华封东晓董冬李孝军曹爱峰孙远峰张艳芳左利伟雷利庆于民凤张冰段海凤张秋实郭琴陈登超
Owner CHINA PETROLEUM & CHEM CORP
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