Sandstone oil and gas carrier bed geophysics-geology-geochemistry detection method and device

A geochemical and geophysical technology used in oil and gas exploration to solve problems such as lack of general applicability

Active Publication Date: 2014-05-28
CHINA UNIV OF PETROLEUM (BEIJING)
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Problems solved by technology

However, this method uses the empirical formula given by the predecessors, which lacks universal applicability

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  • Sandstone oil and gas carrier bed geophysics-geology-geochemistry detection method and device
  • Sandstone oil and gas carrier bed geophysics-geology-geochemistry detection method and device
  • Sandstone oil and gas carrier bed geophysics-geology-geochemistry detection method and device

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Embodiment Construction

[0110] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.

[0111] In order to realize the effective detection of sandstone oil and gas transport layers, the embodiment of the present invention establishes a set of identification sandstone oil and gas based on the principle of oil and gas accumulation dynamics through the combination of geophysical logging-geology-geochemical theory and technology. Efficient detection method for the transport layer. That is, the driving force of oil and gas migration is buoyancy, and the resistance is displacement pressure. Only when the power exceeds the resistance, that is, when the buoyanc...

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Abstract

The invention discloses a sandstone oil and gas carrier bed geophysics-geology-geochemistry detection method and a sandstone oil and gas carrier bed earth physical-geological-geochemistry detection device, wherein the method comprises the following steps that a buoyancy model is built according to the actual measured density differences of oil, gas and water of underground oil-gas reservoirs; through combining the rock core analysis and logging curves, a sandstone shale content, porosity, permeability and displacement pressure model is built; an oil and gas conveying sealing surface is determined according to displacement pressure curves; sandstone layer sections with the buoyancy greater than the displacement pressure are detected, and possible carrier beds are sieved; through combining test results on hydrocarbons by oil-gas geology and geochemistry, the effective sandstone carrier bed is determined. The method and the device provided by the invention have the advantages that through combining the borehole geophysics, geology and geochemistry theories and technology, according to the oil and gas accumulation dynamics principle, the effective detection on the sandstone carrier bed is realized, so the scientificity on the oil-gas reservoir petroleum geology study is improved.

Description

technical field [0001] The invention relates to the technical field of oil and gas field exploration, in particular to a geophysical-geological-geochemical detection method and device for sandstone oil and gas transport layers. Background technique [0002] Effective detection of oil and gas transport layers is a difficult problem in oil and gas exploration research. At present, the method of using geological data to study the transporting layer at home and abroad is mainly to use the isopach map of the geological framework sand body to identify the thick sand body, and combine the sand body physical property isopach map to determine the relatively high porosity and permeability zone to comprehensively identify the effective transport layer. In addition, there are studies on the transport layer through the dynamics of oil and gas migration and accumulation. For the identification of sand bodies, the method of sequence stratigraphy is mostly used at present. Through the ide...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B49/00
Inventor 谢然红李美俊张慧王跃祥
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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