Fluid sensitivity study of elastic parameters in low-medium porosity and permeability reservoir rocks |
| |
Authors: | Fa-Gen Pei Chang-Chun Zou Tao He Ge Shi Gen-Gen Qiu Ke-Ying Ren |
| |
Institution: | 1.Key Laboratory of Geo-detection (China University of Geosciences, Beijing),Ministry of Education,Beijing,China;2.School of Earth and Space Sciences,Peking University,Beijing,China;3.Zhanjiang Branch of China National Offshore Oil Corporation Ltd.,Zhanjiang,China |
| |
Abstract: | In this article, based on the acoustic measurements of core samples obtained from the low to medium porosity and permeability
reservoirs in the WXS Depression, the densities and P and S wave velocities of these core samples were obtained. Then based
on these data, a series of elastic parameters were computed. From the basic theory and previous pore fluid research results,
we derived a new fluid identification factor (F). Using the relative variations, Ag/w and Ao/w, of the elastic parameters between gas and water saturated samples and between oil and water saturated samples, λρ, σ
HSFIF, Kρ, λρ ? 2μρ, and F as quantitative indicators, we evaluate the sensitivity of the different fluid identification factors to identify
reservoir fluids and validate the effects by crossplots. These confirm that the new fluid identification factor (F) is more
sensitive for distinguishing oil and water than the traditional method and is more favorable for fliud identification in low
to medium porosity and permeability reservoirs. |
| |
Keywords: | elastic parameters pore fluid fluid identification factor wave impedance crossplot validation |
本文献已被 万方数据 SpringerLink 等数据库收录! |
|