Measurement and rule of velocity and attenuation for P-wave in core sampleof water-saturated sand in a condition of room temperature and confined pressure
Xu Guoming1, Sun Xinlei1, Xiao Xiang1, Wu Yonggang2, Zhao Baozhong2
Department of Earth and Space Science, Chinese University of Science andTechnology, Hefei City, AnhuiProvince, 230036, China
Abstract：Under the condition of 28~80℃ room temperature and 3.33~60.0 MPa confining pressure,and through measuring 19 core samples of water-saturated sand in Daqing Oilfield,a set of complete and reliable data,such as P-wave velocity(v0),pressure coefficient of wave velocity(av),temperature confficient(bv),and quality factor(Q,including P-wave quality factorQ0),pressure coefficient(bq)and temperature coefficient for pressure coefficient(cq))has been got.The regression formula for P-wave velocity as well as quality factor Q as a function of temperature and confining pressure has been got for core samples of Daqing well No.1 and No.2.The measurement results show that the relation between P-wave velocity and quality factor Q vs pressure and temperature is linear and relation of pressure coefficient of the Q and temperature is also linear for core samples of water-saturated sand.
徐果明, 孙新蕾, 肖翔, 吴永刚, 赵宝忠, 曲斌. 温压条件下水饱和砂岩岩样纵波波速和衰减的测量与规律[J]. 石油地球物理勘探, 2002, 37(1): 39-43.
Xu Guoming, Sun Xinlei, Xiao Xiang, Wu Yonggang, Zhao Baozhong, Qu Bin. Measurement and rule of velocity and attenuation for P-wave in core sampleof water-saturated sand in a condition of room temperature and confined pressure. OGP, 2002, 37(1): 39-43.
