Experimental Research on Rock Mechanics Parameters in the Lower Youshashan Formation, Wunan Oilfield

International Conference on Manufacturing Technology, Materials and Chemical Engineering

机械制造;材料科学;化学工业

Jia, Suogang^1 ; Hu, Ruohan^2 ; Lin, Hai^1 ; Zhang, Yong^1 ; Mao, Chun^3 ; Xiong, Tingsong^1 ; Zhang, Ting^3

Research Institute of Drilling and Production Technology in Qinghai Oilfield of China Petroleum, China^1

University of Southern California, United States^2

Southwest Petroleum University, China^3

关键词: Acoustic features;    Comparative analysis;    Deformation Characteristics;    Dynamic modulus of elasticity;    Dynamic Poisson's ratios;    Experimental research;    Rock mechanics parameters;    Static modulus of elasticities;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/392/4/042019/pdf
DOI  :  10.1088/1757-899X/392/4/042019

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Qinghai oilfield has moved one of its currently developmental focuses onto the Lower Youshashan formation, Wunan oilfield. This paper presents acoustic features of 16 vertical and 40 horizental core samples (56 samples in total) from Youshashan Formation, Wunan Oilfield, which tested by SCMS-E high-temperature & pressure core multi-parameters tester and the furtherly dynamic modulus of elasticity and Poisson's ratio of core samples were obtained. Most specimens present a strong plastic deformation characteristic by applying the RTR-1000 high-temperature & pressure triaxial rock mechanics testing device to evaluate the stress-strain curve of the corresponding specimens; Static modulus of elasticity and Poisson's ratio of the separate core samples were calculated as per GB/T50266-2013. Experimental results demonstrate: static modulus of elasticity of core samples shows much less than dynamic modulus of elasticity of that while static Poisson's ratio presents much greater than dynamic Poisson's ratio. This paper provides a comparative analysis on dyamic & static mechanics property parameters according to the classification of vertical and horizontal and complete samples, and the conversion relation between dyamic and static mechanics property parameters was established, which lays the foundation of rational and efficient reservoir expoitation in the Lower Youshashan Formation, Wunan Oilfield in terms of mechanics parameters.