石油物探2017，Vol.56Issue(3)：390-399,10.DOI:10.3969/j.issn.1000-1441.2017.03.009
井控各向异性速度建模技术在YKL地区的应用
The application of well-controlled anisotropy velocity modeling in YKL region
摘要
Abstract
The urgent demand for high quality imaging data,especially high-precision geological structure,is a key problem in the development of YKL gas field.Because of missing near-offset data and low fold of seismic data,well-seismic misfit for structural depth prediction in this region can`t meet the exploration requirement if we only use conventional velocity modeling.Therefore,well-controlled anisotropy grid-tomography technique was adopted to conduct velocity modeling layer-by-layer.Based on precise choosing the reasonable markers and building the initial velocity model in the selected area,we use known logging data to calculate anisotropic parameters within this region.Then we eliminate the influence of large set for stable formation velocity on gas reservoir depth,and from shallow to deep layer by layer inversion on marker layer,update iterative anisotropic parameters,velocity and depth migration imaging until the predicted depth errors from well log and seismic data for each marker layer to be reduced.In addition,it has been confirmed by 3 drilling wells that the misfit between the predicted structural depths respectively from the final seismic migration results and logging depth measurements in this gas reservoir are all within 5m.So we can draw a conclusion that our technique can significantly improve the imaging accuracy for structure and fracture of gas reservoir so as to reduce the risk of production drilling.关键词
叠前深度偏移/井控/各向异性/网格层析/速度建模/井震误差Key words
PSDM/well-controlled/anisotropy/grid-tomo/velocity modeling/well-seismic depth error分类
天文与地球科学引用本文复制引用
裴云龙,王立歆,邬达理,蒋波,邓锋..井控各向异性速度建模技术在YKL地区的应用[J].石油物探,2017,56(3):390-399,10.基金项目
国家科技重大专项"塔河油田6-7区室内参数组合处理采集方案优化研究"(2011ZX05049-001-002-004)资助.This research is financially supported by the National Science and Technology Major Project of China (Grant No.2011ZX05049-001-002-004). （2011ZX05049-001-002-004）
