论文部分内容阅读
经过多年的勘探实践 ,渤海湾盆地滩海地区虽然目前的勘探程度仍很低 ,但在认识和实践两方面却均有较大的突破。依据盆地自第三纪古新世以来 ,沉积和沉降中心由陆地周缘向海域中心的逐步迁移特征 ,并从含油气体系的角度 ,结合已知含油气区带 ,探讨滩海地区所处的有利石油地质位置和含油气特征。滩海地区正处于 Es4 —Es3和 Es1— Ed两大套生烃岩系的叠置复合区。同时具备陆上的 Es3和 Es1以及海上的 Ng和 Nm等多套区域盖层。两大套烃源岩供油期长( Ed— Q) ,形成 Ar至 Nm多套含油气层系。油气非常富集。
After many years of exploration, the current exploration level in the beach area of the Bohai Bay Basin is still very low. However, both breakthroughs have been made in both understanding and practice. Based on the gradual migration of sedimentary and sedimentary centers from the periphery of the land to the center of the sea area since the Third Paleocene, and from the perspective of oil and gas system, combined with the known oil and gas zones, Geological location and petroleum characteristics. Beach area is in the superposition of Es4-Es3 and Es1-Ed two sets of hydrocarbon-bearing rock series. At the same time with onshore Es3 and Es1 and Ng and Nm at sea and other sets of cover. The two major sets of source rocks have a long oil supply period (Ed-Q), forming multiple sets of Ar to Nm oil-bearing gas reservoirs. Very rich in oil and gas.