摘要
针对吐哈盆地二叠系盆地性质不清,沉积环境、烃源岩潜力不明的问题,综合利用钻井、野外露头等资料,运用岩性组合特征、测井曲线、岩石元素、油气地球化学等方法,对研究区二叠系盆地性质、沉积特征及烃源岩潜力进行分析。研究结果表明:吐哈盆地二叠系为裂谷盆地,划分为裂谷初始期(P_1y—P_2d)、裂谷鼎盛期(P_2t)、裂谷萎缩期(P_(3w))3个阶段,塔尔朗组处于裂谷鼎盛期,是烃源岩的主要发育层系,具有广盆一体化沉积、现今残留分布的特点;沉积类型以滨浅湖、半深湖—深湖亚相为主,该套烃源岩具有厚度大、成熟度好、分布广的特点,具有较大的勘探潜力。该研究对区带优选及勘探部署具有一定的指导意义。
In view of the unclear understanding of the Permian properties,sedimentary environment and source-rock potential in Turpan-Hami Basin,the lithology combination properties,logging,rock element,hydrocarbon geochemistry and other methods are used to analyze the properties,sedimentary pattern and source-rock potential of Permian basin based on drilling,field outcrop and other data.Research indicates that the Permian in the TurpanHami Basin is a rift basin divided into three stages,namely the rift initiation stage（P1 y-P2 d）,the rift peak stage（P2 t） and the rift shrinking stage（P（3w））.The Taerlang Formation within the rift peak stage is considered as the major stratum for source-rock development,which is characterized by integrated wide-basin sedimentation and present residual distribution.The sedimentation is dominated by shore shallow lake,semi-deep lake and deep lake sub-facies.This set of source-rock is featured by large thickness,better maturity and wide distribution,which shows a great exploration potential.This research could provide certain guidance for zone optimization and exploration deployment.
作者
韩祥磊
Han Xianglei(Sinopec Shengli Oilfield Branch Company,Dongying,Shandong 257000,Chin)
出处
《特种油气藏》
CAS
CSCD
北大核心
2018年第3期18-22,共5页
Special Oil & Gas Reservoirs
基金
中国石化股份公司重点科技攻关项目"新疆北部石炭系成烃成藏与勘探方向"(P12035)
关键词
吐哈盆地
中二叠统
塔尔朗组
沉积特征
烃源岩
勘探潜力
Turpan-Hami Basin
Middle Permian
Taerlang Formation
sedimentary pattern
source-rock
exploration potential
