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Exploration method of faulted basin slope oil reservoir distribution

A slope and oil-carrying technology, applied in the field of oil exploration, can solve the problem of inaccurate distribution of oil reservoirs and other issues

Active Publication Date: 2014-10-22
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

[0005] The purpose of the present invention is to provide an exploration method for the distribution of oil reservoirs in the slope zone of the faulted lake basin, so as to solve the problem that the distribution of oil reservoirs in the slope zone of the faulted lake basin is affected by the segmentation characteristics of boundary faults, sedimentary facies and faults. The problem that the favorable reservoir distribution area in the target area selected by the exploration method is not accurate enough

Method used

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  • Exploration method of faulted basin slope oil reservoir distribution
  • Exploration method of faulted basin slope oil reservoir distribution
  • Exploration method of faulted basin slope oil reservoir distribution

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Embodiment

[0044] The oil fields selected in this example are mainly monoclinic structures, such as figure 1 It is 10km away from the oil source, and it is dominated by traps of fault nose, fault block and fault-lithology. The faults are complex, the faults are developed and small in scale, the extension length is short, and the intersecting relationship is complex and complex. Fault-block reservoirs are mainly characterized by small fault-block area, small oil-bearing height, narrow oil-bearing stripes, and vertically "toothbrush" reservoirs, and the exploration success rate of complex fault-block reservoirs is not high. Using the idea of ​​"source-potential facies guidance", comprehensive evaluation of reservoir-controlling factors such as oil source, sedimentary facies, and faults in the oilfield is carried out. The specific process is as follows:

[0045] (1) Controlling effect of source on reservoir

[0046] According to the statistics of the distance between oil reservoirs and hyd...

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Abstract

The invention relates to an exploration method of faulted basin slope oil reservoir distribution and belongs to the field of oil exploration technology. In allusion to the later period of faulted basin exploration, through statistics of related information of source rock, fluid potential, sedimentary rock phase and fault in a target area and according to the principle of source potential conduction, the above information is comprehensively analyzed so as to determine a favorable oil reservoir distribution area in the target area. Forward oil control exploration limitations are broken and are shifted to negative structure and positive structure. Comprehensive analysis is carried out according to an oil source, fluid potential, sedimentary facies distribution and fault occurrence in the area, the slope is evaluated, and a favorable exploration target area is selected.

Description

technical field [0001] The invention relates to an exploration method for the distribution of oil reservoirs in the slope zone of a faulted lake basin, belonging to the technical field of petroleum exploration. Background technique [0002] Faced with the increasingly severe crude oil production situation in our oilfield and the complex oil and gas accumulation conditions in the sag, it is the key to realize the next exploration breakthrough in the Nanyang sag to carry out in-depth research methods for evaluating the favorable areas of the faulted lake basin slope belt. At present, there have been many studies on continental complex faulted lake basins at home and abroad. The Nanyang Sag is a continental complex faulted lake basin with complex structures, well-developed faults, and rich provenance. Through decades of exploration, various types of oil and gas reservoirs have been discovered. There are also complex types of oil and gas reservoirs such as complex small fault (...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V11/00
Inventor 罗家群张帆杨云飞王冶张永华郭飞飞聂勇郑凯文
Owner CHINA PETROLEUM & CHEM CORP
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