关于柴达木盆地跃进地区岩性油气藏勘探的建议

柴达木盆地西部南区是该盆地勘探程度相对较高、资源潜力大的区块,也是其下一步开展精细岩性油气藏勘探的有利区带,然而随着勘探程度的不断深入,制约这一地区油气勘探的关键地质问题也日趋明显。通过对跃进地区油气成藏机理、有利沉积相带展布的重新认识和对新三维地震资料的解释,认为在该区尕斯东南斜坡应寻找E13的岩性油气藏,即沿着斜坡背景的鼻状隆起继续下坡找油;跃西地区坡折带相对发育,下一步则应查明E23的藻灰岩分布范围,实施钻探,另外,该带基岩潜山也是值得探索的领域;跃进二号地区跃深11井以南斜坡背景上发育有鼻状隆起,与已获得油流的跃进四号具有相似的构造背景和成藏背景,也是一个值得重视的领域。

ABOUT PROPOSALS FOR SANDBODY LITHOLOGICAL EXPLORATION OF YUEJIN REGION IN QAIDAM BASIN

The south-west Qaidam basin is the high exploration degree region and has the large resource potential,so it become the favorable area for sandbody lithological reservoirs exploration.Along with exploration increase,the key problems of confinement exploration become gradual exposal.We have studied the accumulation model of petroleum and sedimentary facies,and interpreted the 3-D seismics.The result of study show that ramp grade of Gasi is the favorable area for seeking sandbody lithological reservoirs on E~1_3,we should seek the sandbody lithological reservoirs along the nose hump on ramp grade.At the same time,Yuexi structure slope belt is the favorable area for seeking sandbody lithological reservoirs,the major problem is finding algal limestone and defining the distributing dimension.Buial hill zone is important field for exploration in Yuexi region.There is the nose hump at the south of Yueshen11 drill on the ramp grade of Yuejinerhao,it's tectonic setting and conditions of formation are similar with that of Yuejinsihao region,so it is still important field for sandbody lithological reservoirs exploration.