试论富油凹陷油气分布的"互补性"特征

Oil and Gas Distribution of Oil-enriched Depression Characterized with "Reciprocity"

渤海湾盆地冀中坳陷和二连盆地岩性-地层油气藏研究和勘探实践发现,富油凹陷油气分布具有"互补性"特征,即构造和岩性一地层油气藏在油气资源分配、空间分布上具有"互补性",这种分布特征是由构造与岩性一地层油气藏所赋存的宏观地质背景、成藏条件、成藏机理等多种因素的耦合所决定的。进一步研究表明,油气分布的"互补性"在各类陆相盆地中具有普遍性。这一"规律"的揭示,有助于在油气勘探实践中树立新的勘探理念,建立科学的勘探程序,制定正确的勘探部署,对推进我国陆相含油气盆地油气勘探工作向纵深发展具有重要意义。

Based on the study and exploration of Jizhong Depression in Bohai Bay Basin and the lithologic-stratigraphic oil and gas reservoirs in Erlian Basin, the oil and gas distribution of oil-enriched depression is characterized with 'reciprocity,' namely the structural and the lithologic-stratigraphic oil and gas reservoirs sharing 'reciprocity' in space and oil and gas resources distribution. This distribution characteristics is caused in combination of a number of factors, such as the geological conditions as well as the reservoir formation conditions and mechanism of the structures and the lithologic-stratigraphic oil and gas reservoirs. The further study indicates that the 'reciprocity' of oil and gas distribution is quite common in the basin of continental facies. Acquisition of this 'law' is helpful to establishment of the new exploration conceptions in the oil and gas exploration practice, establishment of the scientific exploration procedure and formulation of the correct exploration deployment. The law is of great significance to promote the oil and gas exploration of the continental basins in China.