Integrated fluid prediction for carbonate reservoir
Zhang Junlin1, Tian Shicheng1, Zheng Duoming2, Lu Jianlin2
1. School of Energy Resources, China University of Geosciences (Beijing), Beijing 100083, China;
2. Exploration and Exploitation Institute, Tarim Oilfield Company, PetroChina, Korla, Xinjiang 841000, China;
3. Wuxi Petroleum Geology Institute, SINOPEC, Wuxi, Jiangsu 214126, China
Abstract：It is a real challenge to predict hydrocarbon in carbonate reservoir in the western Northern Tarim Uplift because carbonates in the region have strong heterogeneity. According to our experience, the Probe AVO software is more effective to predict fluid in fracture-cavity carbonate reservoir than conventional post-stack fluid attributes. Using automatic residual NMO, median filter and amplitude equalization, we reduce partially AVO pseudomorph caused by non-reservoir and non-hydrocarbon. It proves that AVO response aroused by hydrocarbon bearings is more obviously than water bearings in carbonate reservoir after utilizing fluid substitution and AVO forward modeling. Meanwhile, we utilize well logging data interpretation to predict fluid in carbonate reservoir to reduce prediction risks.
