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Method for determining oil and gas reservoir-forming age

A technology for oil and gas accumulation and uniformity, which is applied in measurement devices, instruments, fluorescence/phosphorescence, etc., can solve the problems of low chronological accuracy and strong multi-solution of oil and gas accumulation prediction, and achieve the effect of reducing the influence of erosion thickness parameters and improving the accuracy.

Inactive Publication Date: 2017-01-11
XI'AN PETROLEUM UNIVERSITY
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Problems solved by technology

[0007] The purpose of the present invention is to provide a method for determining the age of oil and gas accumulation, which can predict the age of oil and gas accumulation in multi-stage superimposed basins, so as to solve the problem of low accuracy and multiple ages of oil and gas accumulation prediction in the prior art. Solvable technical issues

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  • Method for determining oil and gas reservoir-forming age
  • Method for determining oil and gas reservoir-forming age

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[0053] In order to have a clearer understanding of the technical features, purposes and beneficial effects of the present invention, the technical solution of the present invention will be described in detail below in conjunction with the embodiments and drawings, but it should not be construed as limiting the scope of the present invention.

[0054] The Ordos Basin in central my country is a sedimentary basin where oil, natural gas, coal, uranium and other minerals are accumulated and enriched. Since the Mesozoic Triassic, the basin has experienced multi-stage deposition and multi-cycle reformation, multi-stage hydrocarbon generation and multi-layer It is a process of compound oil (gas), multiple migration and multi-stage adjustment and dissipation. The existing research results have basically found out that the Upper Paleozoic natural gas reservoirs in the Ordos Basin have the characteristics of multi-stage accumulation and multi-layer composite gas-bearing, and the main accum...

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Abstract

The invention discloses a method for determining an oil and gas reservoir-forming age and relates to the technical field of oil and gas reservoir forming. According to the technical scheme, the method mainly includes the steps that research area oil-bearing formation inclosure flakes and apatite minerals are acquired; the inclosure formative periods and sequence are researched, the inclosure formative periods and sequence are determined, and hydrocarbon inclosure and saline inclosure are screened; through combination of a cold and hot table and a polarizing microscope, homogenization temperature of the hydrocarbon inclosure and saline inclosure with different attitudes is quantitatively acquired; thermal evolutional history model parameters are determined, the fission track length and density of apatite are counted, the fission track age is calculated, a multielement sector-shaped annealing model is established, and set geological conditions are screened; AFSolve software is used for thermal history simulation, and an optimal thermal history path T-t curve is acquired; the oil gas one-period or multi-period reservoir-forming time is determined. According to the method, the problems that in the prior art, oil and gas reservoir-forming age prediction precision is low, and multiplicity of solutions is high can be effectively solved, and great significance is provided for predicting oil and gas favorable zones and reducing the exploration cost.

Description

technical field [0001] The invention relates to the technical field of oil and gas accumulation, in particular to a method for determining the age of oil and gas accumulation. Background technique [0002] As an important research content of oil and gas accumulation geology, oil and gas accumulation age has attracted much attention of geologists, especially petroleum geologists. The research on the age of oil and gas accumulation has gone through a process of development from qualitative, semi-quantitative to quantitative. At present, how to accurately determine the age of oil and gas accumulation has become a technical problem. At the same time, whether the age of oil and gas accumulation is accurate will lead to Different understandings of efficiency, accumulation mechanism, etc. will increase the risk of oil and gas reservoir distribution prediction and increase the cost of exploration. [0003] The traditional method to determine the age of oil and gas accumulation is m...

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Application Information

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IPC IPC(8): G01N21/64G01N21/65
CPCG01N21/64G01N21/65G01N2021/6419
Inventor 丁超张振军郭小波
Owner XI'AN PETROLEUM UNIVERSITY
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