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随着麻黄山地区油气开发的深入,油气分布的非均质性日益明显。通过对各区带典型井区油水分布规律的研究,采用录井、岩心及测井资料等,发现研究区油气分布、成藏组合、成藏体系在不同区带(西缘冲断带、中央凹陷带和东部凸起带)、不同层位有明显差异。油区“油源”充足,成藏条件在纵横向的配置良好,圈闭距油源的远近、运移通道、圈闭有效程度对油气藏形成的控制作用显著,成藏主要受构造影响。西缘冲断带发育断块油藏和断背斜(鼻)油藏,油藏面积小、油柱高度大;中央凹陷带主要为致密低渗岩性油藏,油藏面积大、油柱高度小;东部凸起带,主要为背斜岩性油藏。
With the deepening of oil and gas exploitation in Mahuangshan area, the heterogeneity of oil and gas distribution is increasingly obvious. Through the study of oil and water distribution in typical zones of each zone, logging, core and well logging data are used to find that the distribution of hydrocarbon in the study area and the combination of hydrocarbon accumulation and accumulation in different zones (western margin of thrust belt, central depression Belt and the eastern raised zone), there are significant differences between different layers. Oil zone “oil source ” is sufficient. The accumulation conditions are well arranged in the vertical and horizontal directions. The traps are close to the oil source. The migration channel and the effective degree of traps have a significant control over the formation of oil and gas reservoirs. influences. The western margin of the thrust belt develops faulted block reservoirs and faulted anticline (nose) reservoirs, with small reservoir area and large oil column height. The central depression zone is mainly a tight low permeability lithologic reservoir with large reservoir area and high oil column height Small; the eastern uplift belt, mainly anticline lithologic reservoirs.