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为了明确长岭气田沉积相对储层的控制作用,指导气田高效开发,通过对沉积背景、岩心描述、粒度分析等资料综合研究,确定了长岭气田登娄库组储层为浅湖背景三角洲平原相沉积,主要发育于分支河道、河道间、决口扇和天然堤等4种微相类型。结合测井、岩心分析等研究,确定了各微相特征及分布规律,明确了沉积微相对有效储层的控制作用,其中,分支河道为有效储层发育的主要微相类型,决口扇和天然堤次之,河道间微相则不发育有效储层。
In order to clarify the controlling role of sedimentary relative reservoirs in Changling gas field and to guide the efficient development of gas fields, a comprehensive study on sedimentary background, core description and grain size analysis has been carried out to determine that Denglouku Formation reservoir in Changling Gas Field is a shallow lake background delta plain Sedimentary facies, mainly in the branch river, inter-river channel, the mouth of the fan and natural dike 4 kinds of microfacies types. Combined with well logging and core analysis, the characteristics and distribution of each microfacies have been determined, and the control effect of sedimentary microfacies on effective reservoirs has been clarified. Among them, the branch channels are the main microfacies for the effective reservoir development. Second, the inter-channel microfacies do not develop effective reservoirs.