河南泌阳凹陷南部陡坡带油气藏特征及勘探技术

河南泌阳凹陷南部陡坡带平行于边界断裂，北边紧邻深凹生油区，油源丰富。该带发育有岩性侧缘尖灭圈闭、扇内小型岩性圈闭、断层＋岩性圈闭以及基岩内幕圈闭；实钻在砂砾岩体、基岩层发现油气显示，并试获工业油流，砂砾岩层厚度大、有效厚度薄、物性差、油层产量低；从北向南油层埋藏深度逐渐变浅，原油性质相应变差，南边有稠油油藏。准确落实圈闭分布，综合研究砂砾岩体、基岩层油气聚集规律是勘探成功的关键。不断完善的三维地震构造解释、测井、现场录井、井筒及油气层保护等技术，提高了南部陡坡带油气勘探效益。

Geological Features and Exploration Methodology of Petroleum Reservoir in Steep Slope Zone of the South Biyang Depression

Steep slope zone of the south Biyang depression parallel to the boundary faults neighbours closely on oil source depression in the north.Lithologic pinch-out trap,fault trap and lithologic-fault trap as well as basement trap are developed in this steep slope zone.Drilling indicates that the depth of the sandstone and conglomerate reservoir decreases southtowards and crud oil is poor in quality,becoming thickened oil in the south.Accurate delineation of various traps and comprehensive study of sandstone and ...