GENESIS AND DISTRIBUTION REGULARITY OF THE TURBIDITE BODIES IN THE DELTA FRONT
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摘要: 在室内水槽模拟实验的基础上,系统分析了三角洲前缘浊积体的形成机制、分布规律及控制因素.三角洲前缘浊积体的形成过程可概括为滑塌前的沉积物积累、触发机制作用、沉积物的二次搬运和浊积体的最终沉积4个阶段.多种成因机制综合分析表明,浊积体主要分布在三角洲前缘至深水区之间的4个有利区带内,其分布具有明显的分带性.三角洲前缘深水洼陷区沉积的与地震作用相关的二级滑塌浊积体是最有利的岩性油气藏类型之一.触发机制、三角洲前缘沉积物组成及特征、前三角洲地区沉积底形形态、盆地水体深度以及水平面的升降、沉积物供应通量等因素都在不同方面直接或间接地影响到了浊积砂体的形成和分布.Abstract: The forming mechanisms,the distribution regularities and the controlling factors of the turbidite bodies in the delta front are analyzed systematically based on the in-door flume experiment simulation results.The forming process of the turbidite bodies can be classified into four stages,e.g.the sediment accumulation before slumping,the triggering action,the secondary transportation of sediments and the final deposition of turbidite bodies.The comprehensive analysis results of various genetic mechanisms indicate that the turbidities mainly distribute in four favorable zones between the delta front and the deep water area with apparent zonality.The secondary slumping turbidities associated to the earthquakes and developed in the deep-water depression are one of the most favorable lithological hydrocarbon reservoir types.The main controlling factors of the turbidities in the delta front include the triggering mechanism,the component and the characteristics of the sediments,the bed shape of the prodelta,the water depth,the elevation and subsidence of the water level,and the supply of the sediments,which all affect,directly or indirectly,the formation and the distribution of the turbidite bodies in different aspects.
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Key words:
- turbidite body /
- distribution regularity /
- controlling factor /
- triggering mechanism /
- delta front
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[1] 严进荣,陈东,郭勤涛等.洼陷中浊积岩沉积特征及油气富集规律研究[J].沉积与特提斯地质,2002,22(3):19～24 [2] 韦东晓,田景春,倪新峰.湖相浊积砂体沉积特征及油气勘探意义[J].油气地质与采收率,2006,13(5):21～23 [3] 赵密福,信荃麟,刘泽容.惠民凹陷临南洼陷滑塌浊积岩的分布规律及其控制因素[J].石油实验地质,2001,23(3):267～271 [4] 饶孟余,钟建华,王夕宾等.东营凹陷东部沙三段滑塌浊积砂体沉积特征[J].煤田地质与勘探,2004,32(3):15～17 [5] 饶孟余,钟建华,王海侨等.山东东营牛庄洼陷沙三中亚段浊积砂体储层特征及影响因素[J].现代地质,2004,18(2):256～262 [6] 高永进,邱桂强,陈冬霞等.牛庄洼陷岩性油藏含油气性及主控因素[J].石油与天然气地质,2004,25(3):284～287 [7] 李虎山,吴云桐,吕义军等.牛庄地区沙三段远岸浊积扇发育与分布规律[J].油气地质与采收率,2003,10(2):19～21. [8] 陈嘉树,杨立明.东辛地区沙河街组三段中部砂体沉积特征及控制因素[J].石油勘探与开发,1997,24(5);38～41 [9] 王金铎,韩文功,于建国等.东营凹陷沙三段浊积岩沉积体系及其油气勘探意义[J].石油学报,2003,24(6):24～29 [10] 赖志云,周维.舌状三角洲和鸟足状三角洲形成及演变的沉积模拟实验[J].沉积学报,1994,12(2):37～44 [11] 刘忠保,赖志云,汪崎生.湖泊三角洲砂体形成及演化的水槽实验初步研究[J].石油实验地质,1995,17(1):34～41 [12] 张关龙,陈世悦,鄢继华等.三角洲前缘滑塌浊积体形成过程模拟[J].沉积学报,2006,24(1):50～55 [13] 鄢继华,陈世悦,宋国奇等.三角洲前缘滑塌浊积岩形成过程初探[J].沉积学报,2004,22(4):573～578 [14] Einsele G,Chough S K,Shiki T.Depositional events and their records-an introduction[J].Sedimentary Geology,1996,104:1～9 -
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