Petroleum migration pathways quantitative evaluation method

A transport system and quantitative evaluation technology, which is applied in the field of oil and gas geological exploration, can solve the problems such as the comparison of transport performance, the evaluation of the transport performance of the transport system is not comprehensive, accurate and intuitive, and it restricts the selection of favorable exploration areas. Accurate success rate, geological analysis and quantitative evaluation, and the effect of improving the success rate of exploration

Inactive Publication Date: 2015-11-18
CHINA UNIV OF PETROLEUM (EAST CHINA)
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Problems solved by technology

[0014] (1) Most of the current quantitative evaluation methods for the transport system are based on the single parameter of a single transport body, without considering multiple parameters at the same time to realize the quantitative evaluation of the entire transport system, and the evaluation of the transport performance of the transport system is not comprehensive enough. accurate an

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Embodiment Construction

[0046] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0047] Taking the quantitative evaluation of the oil and gas transport system in the middle sub-member of the third member of the Shahejie Formation in the Wenliu area of ​​the Dongpu Sag as an example, figure 1 It is a flowchart of a quantitative evaluation method for oil and gas transport systems according to an embodiment of the present invention. The method contains the following steps:

[0048] Step 1: Geological analysis of fault transport elements, the specific steps are:

[0049] (1) Calculate the difference in the development of the corresponding strata on both sides of the fault and the deposition time of the strata, calculate the activity rate of the fault, and combine the oil and gas accumulation period to compare the active, relatively active and weak activities during the accumulation period Faults, combined with the amount of oil and gas...

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Abstract

The invention relates to a petroleum migration pathways quantitative evaluation method. The method combines geological analysis and hierarchical analysis. Parameters affecting the migration performance of faults and sand bodies in fault-sand body migration pathways are considered more comprehensively, including fault mobility, lithology opposition relationship between the two sides of faults, section morphology in the longitudinal direction, section morphology in the moving direction and level of fault as well as sand body effective thickness, porosity and permeability, sand body top morphology, sand body slope and sedimentary facies. On the basis of fault and sand body migration pathways multiple-parameter geological analysis, a hierarchical analysis mathematical method is adopted, the roles of the multiple parameters in the migration pathways are considered in a unified way, and quantitative evaluation of the fault-sand body migration pathways is realized. Meanwhile, the migration performances of unit migration pathways of different structures are compared quantitatively, and a favorable exploration area is easier to select. Compared with the existing evaluation method, geological analysis and the quantitative evaluation of the migration pathways are more accurate, and the success rate of petroleum exploration is effectively improved.

Description

technical field [0001] The invention belongs to the technical field of oil and gas geological exploration, and in particular relates to a quantitative evaluation method for an oil and gas transport system. Background technique [0002] Petroleum migration pathways were first proposed by Gussow in 1954 and defined as limited fluid migration pathways mainly controlled by structural morphology. With the development of the transport system, most scholars currently define it as: all the path networks experienced by oil and gas from source rocks to traps and related surrounding rocks, including connected sand bodies, faults, unconformities and Its combination (Zhang Zhaolu, 2000). On the one hand, this definition clarifies the elements of the transport system, and on the other hand, it implies the relationship between the transport system and source rocks and traps, that is, the transport system must connect source rocks and traps in some way. As a "bridge and link" between hydr...

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Application Information

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IPC IPC(8): G01V9/00
Inventor 刘景东蒋有录王成旺刘华郝建光
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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