The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 13, 2021
Filed:
Dec. 30, 2019
Petrochina Company Limited, Beijing, CN;
Lichun Kuang, Beijing, CN;
Dongming Zhi, Beijing, CN;
Yong Song, Beijing, CN;
Zhongchun Sun, Beijing, CN;
Zhenlin Wang, Beijing, CN;
Wei Wang, Beijing, CN;
Rui Mao, Beijing, CN;
Ni Zhang, Beijing, CN;
Zhijun Qin, Beijing, CN;
Qiusheng Chang, Beijing, CN;
Haiming Wang, Beijing, CN;
PetroChina Company Limited, Beijing, CN;
Abstract
Provided is a method for determining effective porosity of high clay-bearing rock core, comprising: acquiring a saturated sample NMR Tspectrum of a high clay-bearing rock core sample, which is measured when temperature of saturated aqueous solution reaches a preset temperature after rock core sample saturated with water being immersed into the saturated aqueous solution and placed and heated in constant temperature and humidity environment; determining a nuclear magnetic total porosity of rock core sample according to the saturated sample NMR Tspectrum; acquiring permeability and NMR Tspectrum of the rock core sample placed in the constant temperature and humidity environment and dried until different time; generating cross-plot of permeability and nuclear magnetic porosity; determining first porosity and second porosity; and determining an effective porosity of the h rock core based on the first porosity, the second porosity, and the nuclear magnetic total porosity.