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:
Jul. 24, 2018
Filed:
Dec. 30, 2015
Petrochina Company Limited, Beijing, CN;
Zhonghua Liu, Beijing, CN;
Lianteng Song, Beijing, CN;
Cancan Zhou, Beijing, CN;
Chaoliu Li, Beijing, CN;
Jixin Deng, Beijing, CN;
Changxi Li, Beijing, CN;
Xiangzhi Cheng, Beijing, CN;
Xia Li, Beijing, CN;
Chao Yuan, Beijing, CN;
Qiangfu Kong, Beijing, CN;
Song Hu, Beijing, CN;
Hongjun Xu, Beijing, CN;
Baoyin Xue, Beijing, CN;
Peiyuan Zhang, Beijing, CN;
PETROCHINA COMPANY LIMITED, Beijing, CN;
Abstract
The present invention proposes a method and apparatus of determining stiffness coefficients of formation, wherein the method comprising: setting up a relation of stiffness coefficients of formation Cand C, C, Cbased on stiffness coefficients of a formation core sample; computing clay content of formation along depth continuously based on formation logging information; computing the stiffness coefficient of formation Calong depth continuously based on a P-wave velocity and a volume density of the formation; computing the stiffness coefficient of formation Calong depth continuously based on a S-wave velocity and a volume density of the formation; and then computing the stiffness coefficients of formation Cand Calong depth continuously based on the calculations above, the relation of stiffness coefficients of formation Cand C, C, C, and a relation of an anisotropy coefficient of the P-wave of the formation and its clay content or a relation of an anisotropy coefficient of the S-wave of the formation and its clay content. The present invention does not need to calculate stiffness coefficients by using a horizontal S-wave velocity inversed from the extracted stoneley waves, and avoids an extraction process of horizontal S-wave, such that the calculation is simple and effective.