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为稳定中国东部油气产量,除使东部老油区、老层系稳产增产外,同时还要加强新区、新层系的研究,渤海湾盆地深层就是新层系勘探的一个重要方面.迄今,人们对油气藏或油气圈闭的认识主要是从中、浅层油气藏研究中总结出来的,随着勘探领域的拓展,深层已成为东部稳产的一个重要的勘探目标.深层油气藏或油气分布控制因素与中、浅层不完全一致,用中、浅层研究方法来指导深层勘探常常事与愿违,影响深层开发进度.通过渤海湾盆地东淄凹陷地震、钻井和测试资料研究,发现深层存在一种新型的含油气圈闭,暂定名为非完全配置构造油气藏.通过对这种油气藏的特征进行分析,试图用孔隙压力所致压缩裂缝理论给予解释.这种新型含油气圈闭的发现,在理论和实践上具有一定的价值.
In order to stabilize the oil and gas production in eastern China, in addition to stabilizing and increasing oil production in the eastern old oil and old strata, as well as strengthening the study of new and new strata, deep in the Bohai Bay Basin is an important aspect of exploration of the new strata. So far, people’s understanding of oil and gas reservoirs or hydrocarbon traps has been mainly summarized from the studies of middle and shallow reservoirs. With the exploration in the field, deep has become an important exploration target of stable production in the east. The control factors of deep reservoirs or oil and gas distribution are not exactly the same as those of middle and shallow layers. It is often unrealistic to use the medium and shallow research methods to guide deep exploration, which affects the deep development progress. Through the seismic, drilling and testing data research in Dongzi Sag, Bohai Bay Basin, it is found that a new kind of oil-gas trap exists in the deep layer and is tentatively named as incompletely configuring structural reservoirs. Through the analysis of the characteristics of this reservoir, trying to explain the theory of compressive fracture caused by pore pressure. The discovery of this new oil and gas trap has certain value in theory and practice.