Petroleum Science >2016,??Issue 1:??64-76 DOI: https://doi.org/10.1007/s12182-015-0074-1
Research into the inversion of the induced polarization relaxation time spectrum based on the uniform amplitude sampling method Open?Access
文章信息
作者：Pu Zhang,Sheng Wang,Kai-Bo Zhou,Li Kong and Hua-Xiu Zeng
作者單位：
School of Automation, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China;School of Automation, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China;School of Automation, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China;School of Automation, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China;China Petroleum Logging Co., Ltd, Xi’an 710077, Shaanxi, China
投稿時(shí)間：2016-01-14
引用方式：Zhang, P., Wang, S., Zhou, KB. et al. Pet. Sci. (2016) 13: 64. https://doi.org/10.1007/s12182-015-0074-1
文章摘要
The induced polarization relaxation time spectrum (RTS) re?ects the distribution of rock pore size, which is a key factor in estimating the oil or water storage capacity of strata. However, as the data acquisition and transmission abilities of well logging instruments are much limited due to the underground environment, it is necessary to explore suitable sampling methods which can be used to obtain an accurate RST with less sampling data. This paper presents a uniform amplitude sampling method (UASM), and compares it with the conventional uniform time sampling method (UTSM) and logarithm time sampling method (LTSM) in terms of the adaptability to different strata, RTS inversion accuracy, and stratum vertical resolution. Numerical simulation results show that the UASM can obtain high inversion accuracy of RTS with different kinds of pore size distribution formation, with high dynamic ranges of pore size, and with a small number of sampling points. The UASM, being able to adapt to the attenuation speed of polarization curve automatically, thus has the highest vertical resolution. The inversion results of rock samples also show that the UASM is superior to the UTSM and LTSM.
關(guān)鍵詞
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Uniform amplitude sampling Relaxation time spectrum Stratum pore distribution Induced polarization