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本文利用高家涯油田的地面地质、钻井、测井、测试资料对泥质岩裂缝油藏的特征、控制裂缝发育的地质因素及裂缝对产能的影响进行了研究。研究认为,该油藏具有缺乏矿质渗透层、裂缝形成主要储渗空间、形成有利的“自生自储”生储盖组合、井间产能相差大等特点。控制裂缝形成的因素复杂,主要有岩性、物性、构造作用、沉积成岩作用等。
In this paper, the characteristics of fractured shale reservoirs, the geological factors controlling fractures and the influence of fractures on productivity are studied by using the surface geology, drilling, well logging and test data of Gaojiaye Oilfield. The study shows that the reservoir is characterized by the lack of mineral permeable layers, the fractures forming the main reservoir for reservoirs, and the favorable combination of “self-generated and self-storage” reservoirs and caprocks with large difference in well productivity. The factors that control the formation of cracks are complex, mainly including lithology, physical property, tectonic function and sedimentary diagenesis.