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.
作者
何潇宁
何文祥
Xiaoning He Wenxiang He(College of Resources and Environment, Yangtze University, Wuhan Hube)
出处
《石油天然气学报》
CAS
2017年第2期25-29,共5页
Journal of Oil and Gas Technology
关键词
长4+5油层组
沉积微相
油藏分布
Chang 4 ＋ 5 Reservoir, Sedimentary Microfacies, Reservoir Distribution
