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高青地区位于济阳坳陷东营凹陷西南部的博兴洼陷西部地区 ,油气成藏主要受三角洲砂体分布控制。以沉积体系发育研究为指导 ,以地震相分析和测井约束反演技术为主要手段 ,分析高青地区沙三段沉积演化史 ,认为其沙三段砂体 (包括已发现的樊家砂体、高青砂体、正理庄砂体 )是高青三角洲 (物源来自洼陷西部青城凸起及西北更远地区 )不同发育时期的产物 ,成分成熟度都比较低。描述了高青地区沙三段砂体分布特征及储集层性质 ,指出沙三下亚段油藏以砂体上倾尖灭的构造 岩性油藏为主 ,沙三中亚段油藏以三角洲前缘的滑塌浊积岩的岩性油藏为主 ,沙三上亚段油藏以三角洲前缘的构造 岩性油藏为主。高青地区进一步勘探的要点是落实岩性圈闭和构造 岩性圈闭的分布 ,同时考虑断层封闭性。图 2 (王孝陵摘 )
The Gaoqing region is located in the western part of the Boxing Sag in the southwestern Dongying Sag of the Jiyang Depression. The hydrocarbon accumulation is mainly controlled by the distribution of sand bodies in the delta. Guided by the study of sedimentary system development, taking seismic facies analysis and logging constrained inversion as the main measures, the sedimentary evolution history of Es3 in Gaoqing area is analyzed. It is concluded that the sand body of Es3 Member , Gaoqing sandbody, and Zhenglizhuang sandbody) are the products of different developmental stages in the Qinghai-Xizang delta (provenance from the Qingcheng uplift in the west of the depression and the further northwest region), with relatively low maturity. The distribution characteristics of sand bodies and the properties of reservoirs in the third member of the Shahejie Formation are described. It is pointed out that the reservoirs in the third member of the Lower Reaches of Shahejie Formation are dominated by tectonic lithologic reservoirs with uplifted sand bodies, The lithologic reservoirs of the slump turbidite in the delta front are dominant, and the Upper Triassic reservoir in the delta is dominated by tectonic lithologic reservoirs in the delta front. The key point for further exploration in the Gaoqing area is to implement the distribution of lithologic traps and structural lithologic traps, taking into account the fault seal. Figure 2 (Wang Xiaoling Abstract)