白豹油田157区长4＋5油层组沉积相及油藏分布规律  

Sedimentary Facies and Reservoir Distribution of Chang 4 ＋ 5 Reservoir of Yanchang Formation in Block 157 of Baibao Oilfield

作　　者：何潇宁 何文祥[1] Xiaoning He Wenxiang He(College of Resources and Environment, Yangtze University, Wuhan Hube)

机构地区：[1]长江大学资源与环境学院,湖北武汉

出　　处：《石油天然气学报》2017年第2期25-29,共5页Journal of Oil and Gas Technology

摘　　要：白豹油田157区内主要的含油层位是长4＋S油层组，通过分析岩性、沉积构造、测井及垂向剖面结构等沉积相标志表明，区内长4＋5油层组为三角洲前缘亚相沉积。研究认为，长4＋5油层组油藏的形成和分布主要受沉积相控制，为典型的岩性油藏，油气富集在水下分流河道、河口坝等有利相带中的砂体发育部位，以岩性上倾尖灭油藏为主。The main oil-bearing strata were Triassic Chang 4 ＋ 5 Reservoirs in Block 157 of Baibao Oilfield. By analyzing the sedimentary facies marks such as lithology, sedimentary structures, logging data and vertical sections, it indicated that Chang 4 ＋ 5 reservoirs in Baibao Oilfield were a delta front subface. Study shows that the formation and distribution of Chang 4 ＋ 5 reservoirs are mainly controlled by sedimentary facies, which is a typical lithologic reservoir; oil and gas are accumu- lated in underwater distributary channel, mouth bar and other favorable facies for the main sand body development; and the main type of reservoir is lithologic updip pinch out reservoir.

关 键 词：长4+5油层组 沉积微相 油藏分布 

分 类 号：TE121.13[石油与天然气工程—油气勘探]