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Determining method and device for sedimentary body main object source direction, medium and equipment

A method for determining a method and a sedimentary body technology, applied in the field of offshore oil and gas exploration and development, can solve the problems of cumbersome application, lack of application, and inaccurate prediction, and achieve the effects of wide application, easy operation, and simple calculation.

Pending Publication Date: 2022-07-22
CNOOC TIANJIN BRANCH +1
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Problems solved by technology

However, in the past, when using the seismic foreset structure to carry out provenance direction judgment, most of them used the phase-surface method for qualitative analysis, and lacked a set of effective methods for quantitatively characterizing the main provenance direction of sedimentary bodies, resulting in inaccurate predictions
In addition, some people have proposed various calculation methods for the front product angle, but the application is cumbersome and the operability is not strong

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  • Determining method and device for sedimentary body main object source direction, medium and equipment
  • Determining method and device for sedimentary body main object source direction, medium and equipment
  • Determining method and device for sedimentary body main object source direction, medium and equipment

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[0035] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention are described clearly and completely below. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0036] Unless otherwise defined, technical or scientific terms used in the present invention should have the ordinary meaning as understood by one of ordinary skill in the art to which the present invention belongs. The terms "first," "second," "third," "fourth," and similar terms used herein do not denote any order, quantity, or importance, but are merely used to distinguish the various components. "Comprises" or "comprising" and similar words mean that ...

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Abstract

The invention relates to a method and device for determining the direction of a main object source of a sedimentary body, a medium and equipment. The determining method comprises the steps that the position of an object source injection opening of the sedimentary body and the advancing direction of the sedimentary body are determined according to an ancient geomorphic map of the sedimentary body; any seismic section is extracted at equal intervals on the three-dimensional seismic work area along the advancing direction of the sedimentary body by taking the position of the object source injection port of the sedimentary body as a starting point; flattening the top surface of the sedimentary body on any seismic section to obtain a top surface flattening line; the elevation H and the horizontal distance L of each pre-lamination layer are obtained for each seismic section; and according to the elevation and the horizontal distance of each pre-build-up layer, calculating a pre-build-up angle alpha of each seismic section, and finally calculating to obtain a maximum pre-build-up angle alpha max, namely the main object source direction of the sedimentary body. The method is simple and convenient in calculation and easy to realize, and can intuitively, effectively and quantitatively represent the main source direction of the sedimentary body.

Description

technical field [0001] The invention relates to a method, device, medium and equipment for determining the main provenance direction of a sedimentary body, and belongs to the technical field of marine oil and gas exploration and development. Background technique [0002] In sedimentary facies analysis, determining the main provenance direction of sedimentary bodies is an important basic work, which is crucial for determining the sediment dispersion system and predicting the distribution of sand bodies. Provenance analysis is a method to determine the source of sediment by inferring the characteristics of the provenance area by using various data information and methods. The analysis of the ancient provenance system can determine the location, properties, and sediment transport channels of the provenance area, predict the paleocurrent system, and then judge the distribution of sedimentary facies belts and sediment dispersion system, so as to reconstruct the evolution process ...

Claims

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Application Information

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IPC IPC(8): G01V1/30
CPCG01V1/302G01V1/30
Inventor 刘子玉吴克强高玉飞谢晓军李建平廖计华白海强陈莹徐微唐武熊连桥李鑫韩雅坤
Owner CNOOC TIANJIN BRANCH
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