塔里木盆地塔北隆起油气勘探领域

Analysis of Hydrocarbon Prospecting Domain in Tabei Uplift of Tarim Basin

塔北隆起南坡阿克库勒凸起具有志留系-侏罗系碎屑岩和寒武-奥陶系碳酸盐岩两大套含油层系、构造和地层两大圈闭类型。在开拓构造圈闭领域时要重视非构造应力的形变作用和断裂破碎带的影响,加强对碳酸盐岩内幕构造的探索;对地层圈闭要重视开拓碎屑岩系中的勘探领域,实施岩溶缝洞网络型储集体和次生溶孔似层状储集体并举的勘探方针。对阿克库勒乃至整个塔北隆起区都要以“大岩溶”和“大隆起”的思路全面认识各勘探领域,立体勘探。

In Akekula swell in south slope of Tabei uplift has two suites of hydrocarbon,bearing sequences such as Silurian,Jurassic clastic rocks and Cambrian,Ordovician carbonate rocks and two types of structural trap and stratigraphic trap. Hence,the effects of non,structural stress deformation and faulted fractural zone should be paid attention to for petroleum exploration of the structural trap area,making in,depth investigation of the carbonate inner structures. For the stratigraphic trap,the oil exploratory efforts should focus on its clastic rock formations,implementing principle of prospecting of both reservoir with karst,vug,fracture networks and reservoir with secondary dissolved pores and quasi,stratified nature. For Akekula to full Tabei uplift area,clear understanding of individual exploratory domain would be needed to carry out 3D prospecting based on the ideas of 'large karst' and 'large uplift'.