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Lower-order fault development rule quantitative prediction method for uplift area

A prediction method and low-order technology, applied in the field of oil and gas exploration and development

Inactive Publication Date: 2017-01-04
CHINA UNIV OF GEOSCIENCES (BEIJING)
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Problems solved by technology

In 2012, Zhang Xin et al. proposed the identification method of well-seismic combined low-order sequence faults under the condition of dense well pattern, but this method puts forward high requirements on the richness and quality of oilfield data; Secondary processing of seismic data to identify low-order sequence faults, this method puts forward high requirements on the quality of seismic data, and the prediction results are often multi-solution

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  • Lower-order fault development rule quantitative prediction method for uplift area
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[0053] Take the Ma 35 fault block near the Hanliu fault zone in Weizhuang Majiazui area of ​​Gaoyou sag as an example to illustrate the specific implementation of the present invention. Margin, west of the Shaobo sub-sag, most of the area is located in the deep sag. The Majiazui structure is located in the descending wall of the Hanliu fault. Regionally, it is a monocline structure with the overall stratum uplifted to the northwest, and the north and south are clamped by the Zhen② fault and the Hanliu fault respectively. The Weizhuang structure is located on the ascending wall of the Hanliu fault, which belongs to the southern margin of the north slope of the Gaoyou Sag, and its tectonic activity is mainly affected by the Hanliu fault. The Weima area has well-developed sedimentary rock series, good oil-generating environment, various types of oil and gas reservoirs, and high enrichment degree. It is one of the oil and gas areas with relatively high exploration degree. The Ma ...

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Abstract

The invention relates to the field of exploration and development of oil and gas fields, in particular to a lower-order fault development rule quantitative prediction method for an uplift area. On the basis of seismic interpretation, a structural map for petroleum reservoir exploitation is acquired; on the basis of related experiments of analysis of a petroleum reservoir structure, geomechanics modeling and the like, seismic data are combined to identify the local uplift scope, then a geomechanics model is further created to simulate a stress field, the analysis of the orientation of a major principle stress is utilized to quantify the potential tendency of two groups of lower-order faults, and a planar or sectional rock peripheral mechanics experiment is utilized to further determine the tendency of the lower-order fault. The method solves the problems of difficulty in accurate recognition of the lower-order fault through the traditional seismic interpretation, and implements accurate and quantitative predication of lower-order fault of a petroleum reservoir.

Description

technical field [0001] The invention relates to the field of exploration and development of oil and gas fields, in particular to a method for quantitatively predicting the development law of low-order sequence faults in an uplift area. Background technique [0002] In the prediction of low-order faults, the distribution of low-order faults affects oil and gas development and the distribution of remaining oil, and is also a difficulty that plagues the further development of oil areas. Dai Junsheng et al. proposed to qualitatively predict the distribution of low-order faults through the stress field simulation method, use plane shear stress to predict the trend of low-order faults, and use profile shear stress to predict the tendency of low-order faults, but this method can only qualitatively analyze the low-order faults. The distribution of faults and the use of shear stress to predict the dip of low-order faults lack theoretical support, and the principle needs to be further...

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Application Information

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IPC IPC(8): G01V99/00G01V1/30
CPCG01V1/306G01V20/00
Inventor 刘敬寿丁文龙王濡岳肖子亢金林卢霖
Owner CHINA UNIV OF GEOSCIENCES (BEIJING)
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