A Method for Tracing Oil and Gas Migration Pathways Using Geological, Geophysical and Geochemical Methods

Abstract

The invention provides an oil-gas migration route tracing method through geology, geophysics and geochemistry methods. The oil-gas migration route tracing method through the geology, geophysics and geochemistry methods comprises the following steps of (1) performing geologic study of a carrier bed to determine the configuration relation between the carrier bed and source rock; (2) determining geophysics characterization of the carrier bed to determine spatial distribution and petrophysical distribution of the carrier bed to predict an oil-gas migration route; (3) tracing and checking the predicted oil-gas migration route in step (2) through a geochemistry method. According to the oil-gas migration route tracing method through the geology, geophysics and geochemistry methods, the geology, geophysics and geochemistry methods are comprehensively used for studying the oil-gas migration route. The oil-gas migration route tracing method through the geology, geophysics and geochemistry methods aims at effectively determining oil source relationship, establishing a transportation frame and tracking the oil-gas migration route and serving oil-gas exploration.

Description

technical field [0001] The invention belongs to the field of secondary migration of oil and gas, in particular to the lateral migration of oil and gas in sandstone transport layers, and in particular to a method for tracing oil and gas migration paths by comprehensively applying geological, geophysical and geochemical methods. Background technique [0002] "Oil and gas migration is the most difficult problem in petroleum geology to study and predict in oil and gas exploration" (Deng Yunhua, 2004). Static oil source layers, reservoirs, cap rocks, traps and preservation conditions can be directly analyzed and more accurately predicted with high-quality seismic and drilling data. However, oil and gas migration is a dynamic process that occurred in geological history (Chen Heli, 1995; Li Mingcheng, 1995; Deng Yunhua, 2004), which is difficult to identify under geological conditions. [0003] At present, there are two different views on the secondary migration of oil and gas (Ha...

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Problems solved by technology

[0006] For the above PATHWAYS TM The model is too simplified, the factors considered by the OILTRACK model are difficult to realize, and in the exploration of oil and gas resources in my country, the oil and gas migration paths are intricate and require more detailed research on oil and gas migration paths. The present invention comprehensively applies geological, geophysical and geochemical methods The research of oil and gas migration path is carried out in order to effectively determine the oil source relationship, establish the transport grid and trace the oil and gas migration path, so as to serve oil and gas exploration

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