
TY  - JOUR
A1  - Tan, Wenhui 
A1  - Ba, Jing 
A1  - Zhao, Haibo 
A1  - Fang, Gang 
A1  - Qian, Wei 
A1  - Chen, Hao 
A1  - Yu, Ting 
A1  - Wu, Chunfang 
T1  - Analysis on brittleness characteristics of tight oil siltstones
JF  - ASEG Extended Abstracts
JO  - ASEG Extended Abstracts
Y1  - 2018
VL  - 2018
IS  - 1
SP  - 1
EP  - 6
KW  - 
UR  - https://doi.org/10.1071/ASEG2018ABP063 
N2  - We obtain the basic parameters of the rocks of Qingshankou formation by performing the rock uniaxial and triaxial compression mechanics experiments. Different brittleness indexes are computed and we select the best brittleness index of B2 (E/&#x3c5;, Young&#x2019;s modulus / Poisson&#x2019;s ratio) to evaluate rock brittleness characteristics. The coefficient of brittle stress drop is introduced to evaluate rock brittleness characteristics which coincide with the selected brittleness index. The relationships between brittleness indexes and rock parameters such as elastic parameters, mineral components and reservoir physical properties (porosity, and density) are analyzed. Results show that E and &#x3c5; are the good indicators of rock brittleness, while shale content has no obviously influence on the elastic parameters. Quartz and carbonate minerals are considered as brittle components for evaluating rock brittleness. There is a good correlation between the brittleness index B2 and reservoir porosity, which is important for analyzing rock brittleness characteristics in the study area. 
ER  -

