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Seismic data post-stack quantitative prediction method for fractured reservoir in basin area

A technology of seismic data and prediction method, which is applied in the field of petroleum exploration and can solve the problems of reflecting the unsuitability of fractured reservoirs in the platform basin area.

Active Publication Date: 2021-07-23
PETROCHINA CO LTD
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0007] However, the workflow of the ant body is too long, and there are too many parameters to restrain each other. Any link in the very long process may increase or strengthen unwanted goals.
Moreover, the goal of the ant body is to strengthen the variance body, especially to solve the variance body because the step effect brought by the search time window on the large fault and some small faults can be re-identified. These two main goals are contradictory in themselves. Not suitable for fractured reservoirs in the basin

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  • Seismic data post-stack quantitative prediction method for fractured reservoir in basin area
  • Seismic data post-stack quantitative prediction method for fractured reservoir in basin area
  • Seismic data post-stack quantitative prediction method for fractured reservoir in basin area

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Embodiment Construction

[0051] The present invention will be described in connection with the preferred embodiments in connection with the preferred embodiments. Those skilled in the art will appreciate that the described in the following description is illustrative and not limiting, and the scope of the invention should not be limited.

[0052] In the embodiment of the present invention, there is provided a reservoir quantitative prediction scheme, and a basin region is a stacked quantitative prediction method for the seismic data of the carbonate rock sewing reservoir, including the following steps:

[0053] S100, get seismic data for the three-dimensional block of the basin area.

[0054]The seismic data of the Sanwi block of the basin area is obtained through the artificial earthquake. The seismic data is a three-dimensional seismic data, which is specifically a stacked depth shift seismic data.

[0055] S200, calculates the seismic data of the basin zone three-dimensional blocks to obtain better fra...

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Abstract

The invention discloses a seismic data post-stack quantitative prediction method for a fractured reservoir in a basin area. The invention innovatively provides a quantitative prediction process for the fractured reservoir of the carbonate rock according to the fracture control characteristics of the fractured reservoir of the carbonate rock. According to the process, post-stack depth migration seismic data is mainly used, similarity attributes of the target stratum of the carbonate rock are calculated on the basis of the seismic data, so that fracture characteristics caused by stratum changes are obtained; AFE attributes are calculated according to the similarity attributes; and the seismic attributes are good attributes reflecting the fracture effect at present. The method has the advantages of good plane effect, high layering sense, high fracture control effect, and simplified treatment process.

Description

Technical field [0001] The present invention relates to the field of petroleum exploration techniques, and more particularly to a basin region for seismic data overlay quantitative prediction methods for crack-type reservoirs. Background technique [0002] The crack-type reservoir in the basin area has seismic data. There is no obvious characteristic of the beaded reflection. In the current stacking crack prediction technique of seismic data, there are two types of ant body and seismic curvature, in large-scale During concentrated cracks in the vicinity of the fault in the fracture basin, these two types of technologies have a good effect, but the large amount of split crack effect is poor for the sliding breakage of the basin area. [0003] The crack of the basin area is currently considered to be part of the fracture cavity reservoir near the trunk break. It also has advantages in maintaining the oil and gas. When the reserves are predicted, quantitative engraving is required, ...

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Application Information

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IPC IPC(8): G01V1/30
CPCG01V1/306Y02A10/40
Inventor 朱光有陈志勇李婷婷王萌
Owner PETROCHINA CO LTD
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