A method and system for determining the porosity of shale organic matter
A technology of organic matter and porosity, applied in suspension and porous material analysis, instrumentation, permeability/surface area analysis, etc., can solve the problems of inability to judge the contribution rate of organic matter pores to shale reservoirs, lack of separate quantitative description of porosity, etc.
Active Publication Date: 2019-05-07
PETROCHINA CO LTD
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Problems solved by technology
[0004] The inventors found that there are at least the following problems in the prior art: the current evaluation of the physical properties of shale reservoirs is mostly biased towards the quantitative description of the porosity of the overall rock sample, and lacks a separate quantitative description of the porosity of each type of pore in the rock sample. Especially for the quantitative description of the porosity of organic pores, therefore, it is impossible to judge the contribution rate of organic pores to shale reservoirs
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[0053] The embodiment of the present application provides a method and system for determining the porosity of shale organic matter.
[0054] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.
[0055] figure 1 It is a flow chart of an embodiment of a method for determining the porosity of organic matter in shale in this application. Such as figure 1 As shown, the method for determining the poro...
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Abstract
The embodiment of the invention discloses a method and a system for determining shale organic matter porosity. The method comprises the following steps: obtaining shale information at the first position in a shale storage layer; and determining first organic matter porosity corresponding to the shale information at the first position according to a mapping relation between preset shale information and the organic matter porosity. The embodiment of the invention provides the method and the system for determining the shale organic matter porosity, so that the organic matter porosity in the shale storage layer can be determined.
Description
technical field [0001] This application relates to the technical field of natural gas exploration, in particular to a method and system for determining the porosity of shale organic matter. Background technique [0002] Shale gas is natural gas extracted from shale reservoirs and is an important unconventional natural gas energy source. Compared with conventional natural gas, shale gas has the advantages of large reserves and long production cycle. Therefore, more and more attention has been paid to the exploration and development of shale gas in my country. [0003] Pores in shale reservoirs are the main enrichment places of shale gas. The pore development characteristics such as pore type, pore scale, pore shape and pore distribution determine the effectiveness of shale gas storage and are important factors affecting the preservation conditions of shale gas. There are various types of pores in shale reservoirs, including matrix intercrystalline pores, intergranular pore...
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IPC IPC(8): G01N15/08
CPCG01N15/088
Inventor 毕赫李鹏
Owner PETROCHINA CO LTD