Ancient landform restoration method

A kind of ancient landform restoration and ancient landform technology, applied in image data processing, instruments, analysis materials, etc., can solve problems such as inability to accurately reflect karst conditions, and achieve the effect of restoring ancient landforms and promoting restoration of ancient landforms.
CN108734779AActive Publication Date: 2018-11-02CHINA PETROLEUM & CHEM CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEM CORP
Publication Date
2018-11-02

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Abstract

The invention relates to an ancient landform restoration method which comprises the steps of: S1, according to different formation reasons, dividing breccia into karst crush breccia, karst collapse breccia and karst -accumulation breccia, and by establishing a karst breccia identification model, identifying karst breccia on a full section of a target layer; S2, carrying out marking on positions ofthe karst -accumulation breccia and the karst collapse breccia on the full section, marking a lowest position marked in each bored well as a lowest water table position, determining a lowest water table of the full section, marking an unconformity surface position of each bored well and determining an unconformity surface of the full section; S3, forming a karst ancient landform bored well analysis profile by the lowest water table of the full section, the unconformity surface of the full section and a bored well pillar, flattening the karst ancient landform bored well analysis profile by using the lowest water table of the full section as a base level, and drawing a karst ancient landform profile; and S4, labeling a relative elevation value of each bored well on the karst ancient landform profile so as to draw an isoline formed diagram, wherein the isogram is an ancient landform diagram.
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Description

technical field

[0001] The invention relates to the technical field of petroleum exploration and development, in particular to a method for restoring paleogeomorphology. Background technique

[0002] Karst reservoirs are the most important type of carbonate reservoirs, and the development of reservoirs is obviously controlled by paleogeomorphology. Therefore, it is essential to study the restoration of paleogeomorphology in karst reservoirs. Paleogeomorphology restoration is to study the concave-convex state of the interface surface represented by the isobath line on a certain interface in a certain period. With the continuous advancement of technology, the restoration technology of karst paleogeomorphology has also made great progress, and the research methods have become more and more diverse. These methods are based on the two basic methods of residual thickness method and impression method.

[0003] The so-called residual thickness method refers to the most direct meth...

Claims

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