Provenance system analysis at Ek_2 in Nanpi sag based on well to seismic integrated studies
Qian Geng1, Li Yong1, Yan Zhaokun1, Xu Yancai2, Wang Jincheng1, Zhang Jing1, Xiao Dunqing3, Pu Xiugang3, Liu Zicang3
1. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Chengdu University of Technology,Chengdu,Sichuan 610059,China;
2. PetroChina Engineering Cost Management Center,Zhuozhou Branch,Zhuozhou,Hebei 072751,China;
3. Institute of Exploration and Development,Dagang Oilfield Company,PetroChina,Tianjin 300280,China
Abstract：An analysis of provenance,paleocurrent,sandstone content isogram and distribution characteristics of sand bodies at Ek2 in Nanpi Sag has been conducted mainly based on 3D seismic data,combined with heavy minerals,sandstone content of single wells,seismic attributes and seismic facies interpretation.The results demonstrate that there are three main material source areas at Ek2 in Nanpi Sag: Xuhei salient,Dongguang salient,and Cangxian uplift.Then paleocurrent has been determined by the imbricate or S-type progradational reflection configuration of delta facies from seismic facies interpretation of single well and crosswell seismic profiles.And sand body boundaries have been determined by high amplitude,high frequency,high continuous parallel seismic reflection configuration from the seismic facies interpretation of lacustrine facies.The sandstone content isograms are obtained.The two-direction paleocurrents with a portion of sediment from Xuhei salient and Dongguang salient had come together near well Wu 7,Wu 12 and Wushen 1,producing mix-deposition material source with the relatively high sandstone content.Nevertheless the sediment from Cangxian uplift definitely deposited in coastal shallow lake following the paleocurrent passed by well Ye 21 and Ye 22 in Nanpi sag.
钱赓, 李勇, 颜照坤, 许彦才, 王锦程, 张晶, 肖敦清, 蒲秀刚, 刘子藏. 南皮凹陷孔二段物源体系综合分析[J]. 石油地球物理勘探, 2012, 47(2): 331-337.
Qian Geng, Li Yong, Yan Zhaokun, Xu Yancai, Wang Jincheng, Zhang Jing, Xiao Dunqing, Pu Xiugang, Liu Zicang. Provenance system analysis at Ek_2 in Nanpi sag based on well to seismic integrated studies. OGP, 2012, 47(2): 331-337.
