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Petroleum reservoir rock constituent identification and quantitative evaluation method

A quantitative evaluation and rock technology, applied in the field of petroleum exploration, can solve the problems of inaccurate identification of reservoir rock pore components, unreliable quantitative evaluation results of reservoirs, etc., and achieve the effect of reliable quantitative evaluation results and high recognition accuracy

Active Publication Date: 2015-12-23
CHINA UNIV OF PETROLEUM (BEIJING)
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Problems solved by technology

[0005] The invention provides a method for component identification and quantitative evaluation of petroleum reservoir rocks, which is used to solve the problems of inaccurate identification of reservoir rock pore components and unreliable quantitative evaluation results of reservoirs in the existing petroleum exploration technology

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  • Petroleum reservoir rock constituent identification and quantitative evaluation method
  • Petroleum reservoir rock constituent identification and quantitative evaluation method
  • Petroleum reservoir rock constituent identification and quantitative evaluation method

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Embodiment Construction

[0014] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0015] The method of the present invention will be described in detail below with the nuclear magnetic resonance apparatus as the execution subject.

[0016] figure 1 A schematic flow chart of the method for component identification and quantitative evaluation of petroleum reservoir rocks provided by an embodiment of the present invention, a...

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Abstract

The invention provides a petroleum reservoir rock constituent identification and quantitative evaluation method. The method comprises the steps that nuclear magnetic resonance response signals of sample rocks are received, and inversion is performed on the response signals so that a first spectrogram is acquired; aperiodic relaxation time T2sec and the specific value T1 / T2 of longitudinal relaxation time T1 to transverse relaxation time T2 are calculated according to the first spectrogram, and the first spectrogram is projected to a coordinate system with the specific value T1 / T2 of longitudinal relaxation time T1 to transverse relaxation time T2 and aperiodic relaxation time T2sec acting as coordinate axes so that a second spectrogram is formed; and locating areas of different hole types are divided on the second spectrogram according to the preset cut-off value, and the proportion of each hole type is obtained via an integration method. According to the petroleum reservoir rock constituent identification and quantitative evaluation method, accuracy of reservoir rock constituent identification and reliability of the reservoir quantitative evaluation result can be enhanced.

Description

technical field [0001] The invention relates to the technical field of petroleum exploration, in particular to a method for component identification and quantitative evaluation of petroleum reservoir rocks. Background technique [0002] Petroleum resources are an important resource for life and production. With the development of society, in order to meet the increasing demand for oil, oil exploration technology has been developed rapidly. Among them, the oil exploration technology based on nuclear magnetic resonance is one of the mainstream exploration technologies today. [0003] Petroleum exploration technology based on NMR is a technology that obtains the pore composition information of reservoir rocks by studying the NMR response of porous media rocks in reservoirs. Based on this technology, the reservoir rock porosity, pore size distribution, saturation and other information independent of mineral composition can be obtained, which is of great significance for the qua...

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Application Information

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IPC IPC(8): G01V3/38G01V3/14
Inventor 廖广志肖立志杜群杰
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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