沉积学报2017，Vol.35Issue(6)：1225-1240,16.DOI:10.14027/j.cnki.cjxb.2017.06.014
同生逆断层控制的砂砾岩沉积模式及有利储集相带分布 ——以玛湖凹陷南斜坡白25井区上乌尔禾组为例
Glutenite Sedimentary Pattern under the Control of Contemporaneous Re-verse Thrust and Favorable Reservoir Facies Belt Distribution——Taking P3w, B25 Block, Mahu sag, as an example
摘要
Abstract
Based on the analysis of core facies, logging facies, seismic facies and analysis assay data, with the field practice induction of glutenite sedimentary,this paper draw conclusions that:Fan-fan delta glutenite sedimentary sys-tem under the control of contemporaneous reverse thrust show the progradation deposition on the whole in P 3 w. Indica-ting the phase-sequence characteristics called "Alluvial fan toe ( channel flow )-Alluvial fan middle/Fan delta plain (braided stream)-Fan delta front(distributary belt) - former fan delta/shallow lake (be mixed up with subaqueous fan)".with the development of such five typical glutenite sedimentary microfacies types as channel flow, debris flow/sandy debris flow, braided channel, underwater distributary channel, sectoral waterway. The cumulative effect of con-temporaneous reverse fault belt continuous uplifting and denudation, make the sedimentary of fan toe in alluvial fan thinning, with more and more obvious trend of contemporaneous reverse fault controlling the sedimentary facies differ-entiation. Shale content is the key control factors of glutenite reservoir quality under the extrusion background. The di-agenetic compaction cut hole effect in poor mud glutenite reservoir is weak, with the higher residual intergranular pore development and the higher development level of crush seam in coarse particles communicating intergranular pore, the reservoir quality of poor mud glutenite is best. Based on combination of reservoir space,the favorable reservoir facies belt can be divided into two types:primary intergranular pore-crush seam development zones and primary intergranu-lar pore-secondary dissolution pore development zones. The former mainly distributed in the fault zone-upper slope belt near structural high position, the latter mainly distributed in middle-lower slope belt.关键词
玛湖凹陷南斜坡/上乌尔禾组/冲积扇/扇三角洲/同生逆断层/泥质含量/压碎缝Key words
south slope in Mahu sag/P3w/alluvial fan/fan delta/contemporaneous reverse fault/shale content/crush seam分类
天文与地球科学引用本文复制引用
孟祥超,蒋庆平,李亚哲,孔垂显,吴爱成,王力宝,贾俊飞,肖芳伟,刘午牛..同生逆断层控制的砂砾岩沉积模式及有利储集相带分布 ——以玛湖凹陷南斜坡白25井区上乌尔禾组为例[J].沉积学报,2017,35(6):1225-1240,16.基金项目
中油股份公司<新疆大庆>科技攻关项目(HX132-41528-15)[<Xinjiang-Daqing>Science and Technology Key Project, CNPC, No.HX132-41528-15] （HX132-41528-15）
