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《Progress in Geophysics》 2015-04
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Recovery of denudation amount by integrating well log and seismic attributes analysis:a case study on the second member of Suhongtu in Chagan sag

FENG Zheng-dong;PENG Jun;LI Cong;LI Jian-guo;SHI ying;ZHOU Wei;College of safety science and engineerin,Henan Polytechnic University;Henan Key Laboratory Cultivation Base for Gas CGeology and Gas Control;Research Institute of Exploration an Development,Zhongyuan Oilfield;Research Institute of Exploration and Development,Ji dong Oilfield;PetroChina Jidong Oilfield Company Onland Workarea;  
According to the characteristics of the existing statistics about Chagan Sag,this paper calculating the denudation amount of well point by interval transit time,estimating the erosion thickness of the area where is no well points under the characteristics of seismic reflection and recovering the denudation amount of Su Sec with the help of high resolution well log and seismic data.Based on the above results,The study shown that the denudation amount of Su Sec is 130~560mand can be divided into three grades accurately.The results about Mao1 and other 6 drillings are creditable which are so best fitting degree and less errors that can be act as the control points to recover the denudation amount all over the region.Then the structural patterns result in the difference of the denudation amount of Su Sec.The denudation amounts of the high positions of stratigraphic such as Uligi Slope and the downwall side of Barun Fau are generally greater than 500 m.But the closest to the center of depression the less of the denudation quantity,the denudation amounts of the center of Ehen Sag is only 50 m and even in the center of HuLe Sag where deposition is approximately continuous it can be ignored.
【Fund】: 国家科技重大专项(2011ZX-05040-005及2011ZX05006-004)资助
【CateGory Index】: P618.13
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