鄂尔多斯盆地化子坪地区延长组长6沉积特征及其与油藏分布关系探讨  

Study on the Depositional Feature and the Relation between It and Reservoir Distribution in Chang6 of Yanchang Formation, Huaziping Area, Ordos Basin

作　　者：秦晓艳[1] 武富礼[1] 张志升[2] 何文忠[1] 王宝萍[2] 

机构地区：[1]西安石油大学,西安710065 [2]延长油田股份有限公司,延安716000

出　　处：《重庆科技学院学报（自然科学版）》2010年第3期8-10,共3页Journal of Chongqing University of Science and Technology：Natural Sciences Edition

基　　金："十一五"国家科技支撑计划项目(2007BAB17B05)

摘　　要：根据岩性、沉积结构与构造、测井相综合分析认为,本区长6油层组为三角洲前缘亚相沉积,可细分为三角洲前缘水下分流河道、分流间湾微相。水下分流河道砂体为其主要的储集层。这些砂体横向上复合连片往往呈带状展布,岩性以细粒长石砂岩为主,残余粒间孔和次生溶蚀孔为主要的孔隙类型。通过沉积相与油藏分布的关系研究,认为油气的聚集受沉积微相的控制,水下分流河道砂体为长6油层组良好的储集层,是有利的油气聚集场所。According to the lithology, structure and construction of sedimentary and logging facies, it analyzes that Chang-6 reservoir group in Huaziping area is front-delta deposition subfacies. In the paper, it divides sedimentary microfacies into the underwater distributary channel and the inter-distributary deposits. The distributary channel deposits is the main sandbody. The sandbody distributes as strip forms with upward transverse, it＇s generally fine-grained feldspathic sandstone. The main reservoir space is the residual interparticle porosity and the secondary solution porosity. Through the studies of the relationship between sedimentary facies distribution and reservoir distribution, the accumulation of oil and gas are controlled by sedimentary mierofacies, the distributary channel deposits is the good reservoir of Chang6 as well as the place beneficial for oil and gas accumulation.

关 键 词：化子坪 长6油层组 沉积微相 富集关系 

分 类 号：TE122[石油与天然气工程—油气勘探]