Quantitative identification method suitable for torsion-tensional fault in fault basin

A quantitative identification and fault technology, applied in seismology, geophysical measurement, seismology, etc. for well logging records, can solve problems such as identification, and achieve the effect of reasonable method, simple application, and wide application value

Active Publication Date: 2021-11-02
CHINA PETROLEUM & CHEM CORP +1
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  • Description
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  • Application Information

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Problems solved by technology

This patent is also only aimed at the imaging and identification of faults, and cannot identify different types of faults, such as strike-slip, extensional, and reverse faults.

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  • Quantitative identification method suitable for torsion-tensional fault in fault basin
  • Quantitative identification method suitable for torsion-tensional fault in fault basin
  • Quantitative identification method suitable for torsion-tensional fault in fault basin

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[0021] It should be noted that the following detailed description is exemplary and intended to provide further explanation of the present invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

[0022] It should be noted that the terminology used here is only for describing specific embodiments, and is not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations and / or combinations thereof.

[0023] Such as figure 1 as shown, figure 1 It is a flowchart of a quantitative identification method of a torsional fault in the present invention.

[0...

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Abstract

The invention provides a quantitative identification method suitable for a torsion-tensional fault in a continental fault basin. The method comprises the steps of extracting a two-dimensional seismic section based on three-dimensional seismic data, well data and a seismic coherent data body; calculating a section true dip angle alpha based on the two-dimensional seismic section perpendicular to the fault trend; determining a horizontal movement distance L of the fault based on a fault cutting relation method, and calculating a vertical movement distance H of the fault and a displacement distance D along the fault trend; calculating the total displacement distance M of the fault; calculating the proportion R of the fault horizontal distance L in the total displacement M of the fault, and defining the R as a strike-slip ratio; and quantitatively identifying the fault according to the strike-slip ratio R. The quantitative identification method suitable for the torsion-tensional fault in the continental fault basin is simple and convenient to apply, comprehensive in consideration factor and reasonable, quantitative characterization is realized, and the quantitative identification method has a wide popularization and application value in the exploration of a complex structural belt of the torsion-tensional basin.

Description

technical field [0001] The invention relates to the technical field of oil field exploration and development, in particular to a quantitative identification method for torsional faults in faulted basins. Background technique [0002] Under the background of extensional structure, strike-slip effect has been paid more and more attention in structural analysis of oil provinces. Affected by the subduction of the Pacific plate and the Indian plate, more twisting factors have been injected into the petroleum basins in my country, and the extension-faulting action of the superimposed basins has formed a series of torsional faults. Scholars at home and abroad have studied the structural oil and gas reservoirs controlled by the discovered torsional faults, and the results show that torsional faults affect the provenance pathways, depositional conditions, subsidence rates, trap types, etc. Petroleum-bearing conditions such as oil and gas, storage, migration, trapping, and preservati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/30G01V1/40
CPCG01V1/306G01V1/301G01V1/40G01V2210/642Y04S10/52
Inventor 张伟忠韩宏伟张云银冯德永郝陈琛于景强史士龙
Owner CHINA PETROLEUM & CHEM CORP
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