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Three-dimensional target geologic body interpretation method based on horizontal navigation

A technology of three-dimensional target and target place, applied in the field of three-dimensional target geological body interpretation based on plane navigation, which can solve problems such as insufficient application of plane information and unclear understanding of target geological bodies

Active Publication Date: 2014-07-23
CHINA NAT OFFSHORE OIL CORP +1
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Problems solved by technology

Seismic interpretation based on two-dimensional interpretation has problems such as insufficient application of plane information and unclear understanding of target geological bodies

Method used

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  • Three-dimensional target geologic body interpretation method based on horizontal navigation
  • Three-dimensional target geologic body interpretation method based on horizontal navigation
  • Three-dimensional target geologic body interpretation method based on horizontal navigation

Examples

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Embodiment

[0042] Example: Narrow-striped channel sand bodies are generally developed in fluvial reservoir oil and gas fields. In order to quickly complete the interpretation of such target geological bodies, taking a certain oilfield narrow-striped channel sand body as an example, the method of the present invention is used to analyze the narrow-striped channel sand bodies. Sand body interpretation, including the following steps:

[0043] 1) Perform attribute analysis, inversion and other explanatory processing on the seismic data of the narrow channel sand bodies in the oilfield to highlight the characteristics of the narrow channel sand bodies in the oil field, and obtain seismic data bodies that can fully highlight the geological body information.

[0044] 2) By analyzing the logging and seismic response characteristics of the narrow-striped channel sand bodies in the oilfield, it can be known that the narrow-striped channel sand bodies in the oilfield have obvious low impedance chara...

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Abstract

The invention relates to a three-dimensional target geologic body interpretation method based on horizontal navigation. The three-dimensional target geologic body interpretation method based on horizontal navigation includes the following steps that (1), seismic data for target geologic body interpretation are processed in an interpretative mode, and a seismic data volume fully highlighting geologic body information is obtained; (2), horizon slices near a target geologic body are extracted on the seismic data volume under the restraint of fault interpretation and horizon interpretation, and the horizon slices serve as horizontal navigation slices for target geologic body interpretation; (3), section interpretation of the target geologic body is carried out, section interpretation results are projected on seismic sections extracted in the direction perpendicular to the target geologic body strike, and the section interpretation in the direction perpendicular to the target geologic body strike is finished; (4), the seismic sections are extracted in a rolling mode step by step in the direction perpendicular to the target geologic body strike, and the section interpretation of the target geologic body is finished until all the seismic sections of the geologic body within the whole area is finished; (5), interpretation results of all the seismic sections are projected to the planes of the navigation slices, and the target geologic body is interpreted; (6), the steps (3)-(5) are carried out repeatedly until interpretation of all the seismic sections of the target geologic body within the whole area is finished.

Description

technical field [0001] The invention relates to a seismic interpretation method in the field of oil and gas exploration, in particular to a three-dimensional target geological body interpretation method based on plane navigation. Background technique [0002] Seismic data interpretation includes three important parts: fault interpretation, horizon interpretation and target geological body interpretation. At present, for the 3D seismic data collected and processed in the stage of oil and gas exploration and development, the seismic interpretation still adopts the traditional 2D interpretation, which fails to achieve real three-dimensional spatial interpretation. Seismic interpretation based on two-dimensional interpretation has problems such as insufficient application of plane information and unclear understanding of target geological bodies. Contents of the invention [0003] In view of the above problems, the purpose of the present invention is to provide a three-dimens...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/28
Inventor 范廷恩胡光义董建华宋来明高云峰樊鹏军张会来井涌泉田建华周建楠
Owner CHINA NAT OFFSHORE OIL CORP
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