Method for identifying development direction of strike-slip faults in sedimentary basin

A development direction and basin technology, applied in the evaluation field of structural geology and oil and gas exploration and development, can solve the problems of difficult seismic identification of small displacement strike-slip faults, lack of effective evaluation technology, and small scale.

Active Publication Date: 2019-12-27
SOUTHWEST PETROLEUM UNIV
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AI Technical Summary

Problems solved by technology

[0005] In view of the small scale of strike-slip faults in sedimentary basins, the difficulty in seismic identification of small-displacement strike-slip faul

Method used

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  • Method for identifying development direction of strike-slip faults in sedimentary basin
  • Method for identifying development direction of strike-slip faults in sedimentary basin
  • Method for identifying development direction of strike-slip faults in sedimentary basin

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Embodiment Construction

[0021] Based on the law of movement and development of fault blocks in the strike-slip fault zone, the following combines specific examples ( figure 2 ) It is further explained that the present invention recognizes the development direction of the strike-slip fault zone through the distribution pattern of the height difference along the strike-slip fault zone, but the examples do not limit the present invention in any form. Unless otherwise specified, the methods and equipment used in the present invention are conventional methods and equipment in the technical field.

[0022] (1) Establish an earthquake interpretation work area. Establish seismic interpretation work area along the strike-slip fault zone and load data.

[0023] (2) Earthquake interpretation. On the basis of seismic-geological horizon calibration, interpret the seismic section of the work area including the studied strike-slip fault zone. The interpretation content includes the main horizons and faults. The spacin...

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Abstract

The present invention discloses a method for identifying a development direction of strike-slip faults in a sedimentary basin. For the technical defects of the lack of data for the identification of the segmentation movement development direction of the fault zone in the sedimentary basin and the disability of continuous evaluation, the present invention proposes a method for identifying a development direction of strike-slip faults inside the basin. According to the method provided by the present invention, based on a large quantity of seismic geological horizons and fault interpretations, the height difference between uplift and drop along different sections of the strike-slip fault zone is measured, the movement direction of each fault block is identified through the height difference change trend pattern, and the developmental movement direction of the strike-slip fault zone can be comprehensively identified; and the method for identifying the development direction of the strike-slip fault zone provided by the present invention is applicable to a large strike-slip fault zone and the local sections in the sedimentary basin, and provides a technical means for the evaluation on the evolution and segmentation of the strike-slip fault zone.

Description

Technical field [0001] The invention belongs to the technical field of evaluation of structural geology and oil and gas exploration and development. More specifically, it relates to a method for identifying the development direction of strike-slip faults in sedimentary basins. Background technique [0002] Fractures are a type of structure widely developed in the earth's crust. They are closely related to the evolution of the earth's structure, seismic mechanisms, oil and gas and mineral distribution. They are used in earthquake prediction, oil and gas exploration and development, mineral mining, hydrology and road and bridge engineering, waste treatment and other engineering applications It has attracted much attention and is a hot and difficult point in the application of earth science and engineering. The fault zone of the petroliferous basin has an important control effect on the entire process of hydrocarbon generation, displacement, trapping, accumulation, adjustment and p...

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Application Information

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IPC IPC(8): G01V1/30
CPCG01V1/302G01V1/306G01V2210/62G01V2210/642
Inventor 邬光辉李萌韩剑发孙冲李国会谢舟朱永峰
Owner SOUTHWEST PETROLEUM UNIV
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