苏里格气田苏147水平井整体开发区盒8下段储层精细描述*
FINE DESCRIPTION FOR LOWER PART OF SHIHEZI 8 MEMBER OF SU 147 HORIZONTAL WELL, SULIGE GASFIELD
郝骞1,2 李进步1,2 王继平1,2 王龙1,2 张志刚1,2
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作者单位：中国石油长庆油田分公司苏里格气田研究中心，低渗透油气田勘探开发国家工程实验室
中文关键字：苏147水平井整体开发区 盒8下段 储层精细描述 有利区筛选
英文关键字： whole development zone of Su 147 horizontal well, lower part of Shihezi 8 Member, fine description, selection of favorable zone
中文摘要： 通过对苏里格气田苏
147水平井整体开发区盒
8下段储层微幅构造精细刻画，沉积微相精细识别，砂体展布特征分析及储集性能精细描述，综合筛选出适宜部署水平井整体开发的有利区带。研究表明：盒
8下段储层微幅构造呈东
-西向鼻隆
-鼻凹相间排列，有效储层发育，辫状河三角洲平原底载荷型河道在地层剖面中呈“砂包泥”样式，河道砂与心滩坝砂体通过侵蚀面及侧积面相互叠置、连通，平面上构成毯状沉积复合体，垂向上河道下切、叠加、拼接，形成大型辫状河叠置砂体。沉积控制储层分布范围，成岩控制储层物性优劣，鼻褶平缓的构造区域是水平井部署的有利位置，由此制定出水平井整体开发区有利储集区域筛选原则并细化层次进行综合评价。
英文摘要： Based on the fine description of low-amplitude structure, sedimentary microfacies, and sandbody distribution and reservoir properties for lower part of Shihezi 8 Member of Su 147 horizontal well, Sulige gasfield, a favorable zone has been selected for the whole development. Results show that (1) low-amplitude structures of lower member are arranged in EW-trending uplift and sag, and effective reservoir develops; (2) loading channels in braided-river delta plain are arranged in “mud wrapped with sand” style; (3) through erosion surfaces, channel sand and channel bar sandbody are interbedded and connected to form a blanket-shaped deposition body in horizontal while in vertical, due to channel downcutting, overlying and jointing, they form a large-scale braided-river overlapping sandbody; (4) reservoir distribution is controlled by deposition whereas physical properties are affected by diagenesis; (5) structure area with smooth nosed fold is favorable for horizontal-well deployment.