摘要
查明准噶尔盆地玛北地区三叠系百口泉组储层发育于不同沉积微相的岩性相对储集性能的控制作用.通过岩心精细观察、薄片鉴定、测井、录井、物性等资料分析,结合研究区沉积背景和构造环境,在强调沉积微相与岩性配置的基础上,划分了扇三角洲不同沉积微相环境中发育的主要岩性相,指出了不同岩性相的物性特征及其对储层物性的控制作用.结果表明:水下河道砂砾岩相、河口坝-远砂坝砂岩相是最为有利的储集岩相;辫状河道砂砾岩相、水下主河道砾岩相、水下河道末端砂岩相、水上泥石流砾岩相为较有利的储集岩相;水下泥石流砂砾岩相、前扇三角洲粉砂岩相可作为增储的储集岩相;水下河道间砂泥岩相、平原河道间砂泥岩相、前扇三角洲泥岩相几乎不具备储集性能.最后在沉积相-岩性相研究的基础上对研究区有利储层发育区进行了预测.
This paper focuses on the reservoir of Triassic Baikouquan formation in Mabei area of Junggar basin and aims to find out the controlling effect of lithofacies developed in different sedimentary microfacies on reservoir property.Based on core observation,thin section authentication,well logging,mud logging and physical property analysis,combined with the depositional setting and tectonic environment of the study area,the main lithofacies developed in different fan-delta sedimentary microfacies were classified with the emphasis on the sedimentary microfacies and lithology juxtaposition;moreover,the physical property and the controlling effect on reservoir property of different lithofacies were also analyzed.The results show that underwater channel glutenite facies,estuary dam and distal sandbar sandstone facies are much more favorable reservoir facies than braided channel glutenite facies,subaqueous main channel conglomerate facies,end of underwater channel sandstone facies and superaqueous mudslides conglomerate facies.Subaqueous mudslides glutenite facies and frontal fan-delta siltstone faciesare potential reservoir facies.Subaqueous interchannel sand-mudstone facies,plain interchannel sand-mudstone facies,frontal fan-delta mudstone facies almost have no reservoir property.At last,on the basis of sedimentary facies and lithofacies research,favorable reservoir development area in Mabei was predicted.
出处
《中国矿业大学学报》
EI
CAS
CSCD
北大核心
2015年第6期1017-1024,1052,共9页
Journal of China University of Mining & Technology
基金
国家科技重大专项(2011ZX05000-01-06)
国家重点基础研究发展计划(973)项目(2011CB201104)
甘肃省重点实验室专项(1309RTSA041)
关键词
准噶尔盆地
玛北地区
三叠系百口泉组
岩性相
储层物性
Junggar basin
Mabei area
Triassic Baikouquan formation
lithofacies
reservoir property
