物探与化探2016，Vol.40Issue(4)：763-770,8.DOI:10.11720/wtyht.2016.4.20
浅层气对下伏地层深度预测影响定量研究及在渤海B油田中的应用
Quantitative research and application of influence of shallow gas on depth prediction for underlying strata in B oilfield in Bohai
摘要
Abstract
The quality of seismic image of underlying strata is negatively affected by shallow gas. Therefore, it is difficult to predict the depth of target zone accurately. Thus the drilling risk of horizontal wells is greatly raised as well. In order to improve the accuracy of depth prediction, we use theoretical model analysis to quantize the gas influence including the range and extent. Furthermore, we build many models to achieve pre⁃stack forward modeling and acquire a series of correlation templates which can be applied to quantitatively depth correlation. According to our research, we successfully explain why there exits so large depth difference between two drilled wells in B oilfield. Furthermore, we compute correlation templates to achieve a high⁃precision depth prediction for underlying reservoir of shallow gas. Therefore we efficiently guide the drilling of follow⁃up development wells. We believe our research production will be well used in other offshore oilfields containing shallow gas as well, especially under the condition of sparse well patterns offshore.关键词
浅层气/理论模型分析/正演模拟/深度预测/定量研究Key words
shallow gas/theoretical model analysis/forward modeling/depth prediction/quantitative research分类
天文与地球科学引用本文复制引用
刘建辉,夏同星,郭军,周学锋..浅层气对下伏地层深度预测影响定量研究及在渤海B油田中的应用[J].物探与化探,2016,40(4):763-770,8.基金项目
中国海洋石油总公司“十二五”重大攻关项目课题“海上开发地震技术集成与应用研究” （）
