Simulation method and system of hydrocarbon generation of shale and organic pore evolution

A technology of organic pores and mud shale, applied in the field of petroleum geophysical exploration, can solve the problems that the microscopic mechanism of source rocks cannot be revealed by simulation or inversion

Active Publication Date: 2014-11-19
PETROCHINA CO LTD
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Problems solved by technology

[0006] In order to overcome the problem that the research methods of source rocks in the prior art mostly use laboratory methods and cannot reveal the microcosmic mechanism of the simulation or inversion of the evolution process of source rocks, the present invention provides a shale hydrocarbon generation and organic The simulation method and system of pore evolution can be used in the research of source rock evolution and shale oil and gas migration. Microscopic rock structure characterization technology is used to establish a model for thermal evolution simulation of shale, and then the thermal evolution process of source rock is analyzed. Simulation, which can reproduce the thermal evolution process quantitatively and visually, provides strong technical support for the research of unconventional oil and gas resources, especially the research of shale oil

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Embodiment Construction

[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0026] At present, the microscopic rock structure characterization technology has been developed and quickly entered the mature stage. The methods for characterizing the three-dimensional structure of reservoir pores, including focused particle beam / electron beam double-beam scanning electron microscope (FIB-SEM), etc., have approached or reached nanoscale Resolution. With these devices, the organic nanopores and other structures in the ...

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Abstract

The invention provides a simulation method and system of hydrocarbon generation of shale and organic pore evolution. The method includes the steps that a scanned image obtained by conducting back scattering imaging on a shale sample block is preprocessed to obtain a preprocessed scanned image; phase identification is conducted on the preprocessed scanned image to obtain a scanned image obtained after phase identification is conducted; digital processing is conducted on the scanned image obtained after phase identification is conducted so as to obtain a digital model; inverse simulation of hydrocarbon generation of the shale and organic pore evolution is conducted on the digital model. The microscopic rock structure characterization technology is used for establishing a model for shale thermal evolution simulation, then the hydrocarbon source rock thermal evolution process is simulated, the thermal evolution process can be represented quantitatively and visually, and powerful technical support can be provided for unconventional oil and gas resource research, especially shale oil research.

Description

Technical field [0001] The present invention relates to the technical field of petroleum geophysical exploration, in particular to the technical field of the evolution of source rocks and the initial migration of shale oil and gas in petroleum exploration. Specifically, it is a simulation method of shale hydrocarbon generation and organic pore evolution and system. Background technique [0002] Unconventional oil and gas systems are more complex than conventional oil and gas. One of its characteristics is that shale, which is usually used as a source rock, also has oil and gas accumulation capacity and oil and gas development potential. Studying the hydrocarbon generation process, organic matter pore evolution, and hydrocarbon expulsion pressure of shale on the microscopic (nanoscale) scale is helpful for more accurate evaluation and effective development of shale oil resources. [0003] Hydrocarbon generation thermal simulation experiment is an important method for the hydrocarbo...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B49/00
Inventor 孙亮
Owner PETROCHINA CO LTD
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