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Inversion structure belt plane range identification method based on inversion intensity coefficient

A technology of intensity coefficient and identification method, which is applied in the field of petroleum seismic exploration to achieve accurate identification and strong universality

Active Publication Date: 2021-03-09
CHINA NAT OFFSHORE OIL CORP +1
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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for identifying the plane range of inversion structural belts based on inversion intensity coefficients to solve the problems of the background technology

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  • Inversion structure belt plane range identification method based on inversion intensity coefficient
  • Inversion structure belt plane range identification method based on inversion intensity coefficient
  • Inversion structure belt plane range identification method based on inversion intensity coefficient

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Embodiment Construction

[0036] In order to better understand the purpose, structure and function of the present invention, the understanding of the present invention will be given below in conjunction with the accompanying drawings.

[0037] like Figure 1-5 , a method for identifying the plane range of inversion structural zones based on the inversion intensity coefficient, comprising the following steps:

[0038] S1: Establish reverse structure with reverse mode, such as figure 2 As shown, there are two inversion modes of the inversion structural belt, one is the single-fault inversion structural belt controlled by a single fault, and the other is a double-fault inversion structural belt controlled by two faults. The inversion structural belts experienced the inversion effect of early subsidence and later uplift;

[0039] S2: From the profile of the research area, identify whether the type of inversion structure conforms to the model established in step S1, as the basis for whether the method is...

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Abstract

The invention discloses an inversion tectonic zone plane range identification method based on an inversion intensity coefficient, which comprises the following steps: S1, establishing an inversion tectonic zone inversion mode, S2, identifying whether an inversion tectonic zone type accords with a model established in the step S1 from a section of a research area, and taking this result as a basisfor judging whether the method is applicable or not, and S3, performing analyzing according to the inversion mode in the step S1, establishing an inversion intensity formula; S4, calculating the stratum thickness of the research area, wherein stratum thickness in the inversion period is delta H; S5, recovering the denudation amount of the research area, wherein the stratum denudation amount thickness of the inversion period is E; S6, substituting the stratum thickness obtained in the step S4 and the denudation amount obtained in the step S5 into the inversion strength calculation formula established in the step S2; obtaining a maximum value and a minimum value of the inversion intensity; and S7, establishing an inversion strength coefficient formula, and substituting the inversion strengthmaximum value and the inversion strength minimum value obtained in the step S6 into the formula to obtain a final dimensionless inversion strength coefficient R ', so as to identify the range of theinversion tectonic zone on the plane.

Description

technical field [0001] The invention belongs to the technical field of petroleum seismic exploration, in particular to a method for identifying the plane range of an inversion structural zone based on an inversion intensity coefficient. Background technique [0002] The concept of an inversion structural zone (abbreviated as an inversion zone) is a composite structure produced by the reverse change of tectonic action in the same geological body in different geological historical periods (Williams, 1989; McClay, 1991; Mitra, 1993;). Because of its good anticline shape, it is often a favorable place for oil and gas enrichment, and it is a hot spot for oil exploration. Therefore, the identification of the plane range of the structural inversion zone in the exploration stage is not only helpful to the analysis of the genetic mechanism of the inversion structural zone, but also conducive to the rapid selection of exploration targets. [0003] For a long time, inversion structur...

Claims

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Application Information

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IPC IPC(8): G01V1/28G01V1/30
CPCG01V1/282G01V1/306G01V2210/624G01V2210/661
Inventor 吴奎康琳张中巧高京华王伟樊建华张江涛
Owner CHINA NAT OFFSHORE OIL CORP
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