Method for predicting volcanic rock high-quality reservoirs step by step

A technology for volcanic rocks and reservoirs, applied in the field of step-by-step prediction of high-quality volcanic rock reservoirs, can solve problems such as difficult to predict effects, and achieve the effect of reducing ambiguity

Inactive Publication Date: 2020-07-31
PETROCHINA CO LTD
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Problems solved by technology

As far as the current volcanic rock reservoir prediction methods are concerned, it is difficult to obtain good prediction results with a single method

Method used

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  • Method for predicting volcanic rock high-quality reservoirs step by step
  • Method for predicting volcanic rock high-quality reservoirs step by step
  • Method for predicting volcanic rock high-quality reservoirs step by step

Examples

Experimental program
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Effect test

Embodiment 1

[0037] (1) Use the paleogeomorphological depiction technology based on denudation recovery to identify favorable structural development areas

[0038] On the basis of seismic data interpretation, the depth-domain structural map is obtained through time-depth conversion, and then the residual thickness map is obtained by subtracting the upper and lower layers. The denuded area is restored by the "imprint method" to obtain a relative paleogeomorphic map, and then the dip angle is corrected, compaction correction, and finally get the original paleogeomorphic map ( figure 1 ). The long-term tectonic movement has caused the Carboniferous in the XQ area to form a pattern of uplifts and depressions in the BST uplift slope belt. At the same time, it is divided into two structural belts, the north and the south along the XQ fault zone. The northern structural belt is bounded by Well XIQ1 and narrowed to the east. The weathered residual hills and valleys are not obvious in the western ...

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Abstract

The invention provides a method for predicting volcanic rock high-quality reservoirs step by step. The method comprises the following steps: (1) finely depicting the distribution range of a structurefavorable area; (2) comprehensively identifying the distribution range of the favorable lithofacies; and (3) predicting the volcanic rock fracture development degree and distribution range. From an actual drilling result, a favorable reservoir development area identified by using a step-by-step control high-quality reservoir prediction technology has a good matching relationship with a drilling result. Exploration practice proves that the thought and the technology for predicting the high-quality reservoir are practical and feasible, and are worthy of popularization and application in similarregions.

Description

technical field [0001] The invention belongs to reservoir prediction technology in the petroleum industry, in particular to a technology for comprehensively predicting high-quality reservoirs in volcanic rock reservoirs by using geological-geophysical technology, specifically a method for predicting high-quality volcanic rock reservoirs step by step. Background technique [0002] Since the discovery of volcanic oil and gas reservoirs in the San Joaquin Basin of California, USA in 1887, volcanic rock reservoirs have been continuously discovered all over the world. The accumulation mechanism of volcanic rock reservoirs is relatively complex, and reservoir prediction is a worldwide problem. For reservoir prediction of volcanic rocks, foreign countries pay more attention to microseismic technology and horizon interpretation of seismic data itself, while China pays more attention to seismic prediction technology of volcanic rock reservoirs. Due to the rapid change of volcanic ro...

Claims

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Application Information

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IPC IPC(8): G01V11/00
CPCG01V11/00
Inventor 郭娟娟王彦君张虎权魏彩茹马德龙黄林军齐雯王斌黄玉王国栋
Owner PETROCHINA CO LTD
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