【摘要】 白音查干凹陷有近 2 0年的勘探历史 ,一直没有重大发现 ,在全面分析已有钻井成败的基础上 ,运用新的理论方法 ,对该凹陷形成演化以及地层构造进行了深入研究 ,充分认识到不整合对油气运移、聚集以及对原有油藏的破坏 ,选准了目的层 ;三维地震解释 ,充分考虑到上下地层“二元结构”对构造的影响 ,解释方案有了大的变化 ,通过一系列新认识指导勘探 ,钻井成功率大大提高 ,2 0 0 3年探明石油储量 60 2× 1 0 4 t,为今后的勘探提供了成功经验。更多还原

【Abstract】 Nearly 20 years’ exploration has been done for Baiyinchagan depression but with no significant discovery. By comprehensive analysis on drilled wells and using new theory,further research has been done on depression evolution and stratigraphic structures. Strata: fully understand effect on petroleum migration,accumulation and original reservoir by unconformity and then select target zone; 3D seismic interpretation: fully consider effect on structures by “binary structures” overlying and underlying; interpretation plan also changed greatly. After further understanding for guiding,drilling succeeded greatly with proved OIP 602×10 4t,which provides experience for future exploration.更多还原