Fluvial reservoir characterization and identifi cation: A case study from Laohekou Oilfi eld
Zhang Jun-Hua1, Liu Zhen1, Zhu Bo-Hua1, Feng De-Yong2, Zhang Ming-Zhen2, and Zhang Xue-Fang2
1. School of Geosciences, China University of Petroleum, Qingdao 266555, China.
2. Shengli Geophysical Research Institute of SINOPEC, Dongying 257022, China.
Abstract Finding channel sandbodies is an important task in oil and gas exploration due to the importance of fl uvial reservoirs. It is diffi cult to describe fluvial reservoirs in detail owing to their frequent changes and serious intersections, as well as limitations of S/N ratio and seismic data resolution. Based on the Laohekou 3D data in Shengli Oilfi eld, we analyze the general characteristics of fluvial reservoirs in this area, from which we find that they are characterized by strong amplitudes on seismic profi les, high continuity on time slices, and low frequency in the frequency domain. In addition, a cluster of strong string-beadlike refl ections was found after color processing and detailed interpretation. To understand this observation, we conduct forward modeling to explain the mechanism. This provides a new way to identify ancient channels in similar areas. By using the multi-attribute fusion and RGB display techniques, channel incision is more obvious and the characteristics of the channel structures are manifested much better. Finally, we introduce and apply multi-wavelet detection technology to identify weaker fl uvial reservoir signals.
The work is sponsored by The Science and Technology Research Project, Shengli Oilfi eld (Grant No. YKW1002).
About author: Zhang Jun-Hua, Professor, graduated with a bachelor degreeinGeophysica l Prospecting at China University of Petroleum (East China) in 1987. He received a Master’s degree in Geophysical Exploration and Information Technology from China University of Petroleum (East China) in 1995 and he received his doctor’s degree in 2002.He is currently engaged in teaching and research of petroleum prospecting in China University of Petroleum (East China).
Cite this article:
ZHANG Jun-Hua,LIU Zhen,ZHU Bo-Hua et al. Fluvial reservoir characterization and identifi cation: A case study from Laohekou Oilfi eld[J]. APPLIED GEOPHYSICS, 2011, 8(3): 181-188.
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2011, Vol. 8 
