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1. (WO2018218702) METHOD FOR EVALUATING EVOLUTION OF DIFFERENT TYPES OF PORES IN SHALE

Pub. No.:    WO/2018/218702    International Application No.:    PCT/CN2017/088496
Publication Date: Fri Dec 07 00:59:59 CET 2018 International Filing Date: Fri Jun 16 01:59:59 CEST 2017
IPC: G01N 15/08
Applicants: CHINA UNIVERSITY OF PETROLEUM (EAST CHINA)
中国石油大学(华东)
Inventors: WANG, Min
王民
LIU, Yang
刘洋
LI, Chuanming
李传明
LU, Shuangfang
卢双舫
Title: METHOD FOR EVALUATING EVOLUTION OF DIFFERENT TYPES OF PORES IN SHALE
Abstract:
Disclosed is a method for evaluating evolution of different types of pores in shale. The method is applied in the field of unconventional oil and gas research. With the increasing of shale burial depth or maturity, all kinds of pores, including intergranular pores, Intragranular pores and organic pores and cracks, which are all developed in the shale are constantly changed, such that the storage amount of shale oil and gas is greatly influenced. According to the high resolution electronic scanning electron microscopy image of the shale, on the basis of building the classification standard and pore identification of different types of pores in the shale, surface porosities of different types of pores are respectively extracted, and are used, in combination with the total volume of the pores acquired through data from low temperature N 2 and CO 2 adsorption experiments and high pressure mercury experiments, to build an evolution map of various kinds of pores. The method has an important application value for unconventional shale oil and gas resource exploration.