The relationship between seismic acquisition parameters and data imaging in areas with cavern reservoirs
Zhang Junhua1, Li Jun1, Wu Cheng1, Xu Ying2, Wang Lixin2, Hu Zhongping2
1. School of Geosciences, China University of Petroleum (East China), Qingdao, Shandong 266580, China;
2. Research Institute of Petroleum Geophysical Prospecting, SINOPEC, Nanjing, Jiangsu 211103, China
Abstract：Seismic acquisition parameters such as fold, bin size, offset, source and receiver pattern, determine not only the field seismic data quality but also the acquisition cost. Based on 3D forward modeling of cavern reservoirs in TH area and with seismic data processing, we analyze in this paper the influences of some acquisition parameters on cavern reservoir imaging. The following observation are obtained: A. The bin size has mainly influence on the lateral resolution of the bead-like reflection, the bin size between 15m×15m to 30m×30m is appropriate; B. Fold mainly influences on signal to noise ratio, and it has little influence on resolution of cave imaging. Fold ranges from 140 to 180 can meet production requirements; C. The bigger offset is, the more convergent velocity spectrum's energy is. According to the number of channels of the recording system and the spread length, the maximum offset 6000m can meet velocity analysis and imaging requirements.
张军华, 李军, 吴成, 徐颖, 王立歆, 胡中平. 溶洞型储层地震采集参数与成像关系研究[J]. 石油地球物理勘探, 2015, 50(4): 573-579.
Zhang Junhua, Li Jun, Wu Cheng, Xu Ying, Wang Lixin, Hu Zhongping. The relationship between seismic acquisition parameters and data imaging in areas with cavern reservoirs. OGP, 2015, 50(4): 573-579.
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