摘要
针对羊塔11井区白垩系亚格列木组物源问题,结合岩石学、阴极发光矿物学,以及地震资料属性分析技术,综合分析明确了物源方向,完成了沉积相划分。对羊塔11井区白垩系岩石组分及阴极发光特征分析发现,羊塔11井亚格列木组岩屑存在大量花岗结构,石英阴极发光以紫色为主,钾长石阴极发光以亮蓝色为主,与齐满1井变质花岗岩阴极发光特征一致,有别于温参1井变质岩、英买35-1井玄武岩阴极发光特征。综合分析认为,羊塔11井区亚格列木组物源主要来自塔北隆起轮台凸起古元古界变质花岗岩地层。对羊塔11井区进行地震属性分析,进一步明确了砂体东西向的空间展布特征,最终完成该区辫状河三角洲沉积相划分。
In order to understand the provenance of Cretaceous Yageliemu Formation in the Yangta 11 well block,comprehensive analysis is carried out using petrology,cathodoluminescence mineralogy,and seismic attribute analysis techniques.As a result,the provenance direction is confirmed and sedimentary facies identified.Detail analysis of rock composition and cathodoluminescence(CL)characteristics of Cretaceous Yageliemu Formation in the Yangta 11 well block reveals that there are many granitic textures in lithics,the CL of quartz is mainly purple,and the CL of potash feldspar is mainly bright blue,which are consistent with the CL characteristics of metamorphic granite in Well Qiman 1,but different from those of metamorphic rock in Well Wencan 1 and basalt rock in Well Yingmai 35-1.It is concluded that the provenance of Yageliemu Formation in the Yangta 11 well block is the Proterozoic metamorphic granite from the Luntai Bulge in Tabei Uplift.According to the seismic attributes analysis,it is further clarified the east-westward spatial distribution of sand body and braided river delta sedimentary facies in the Yangta 11 well block.
作者
程明
刘永福
刘运宏
孙琦
周思宇
蒋俊
Cheng Ming;Liu Yongfu;Liu Yunhong;Sun Qi;Zhou Siyu;Jiang Jun(Research Institute of Exploration&Development,PetroChina Tarim Oilfield Company;Research Institute of BGP INC.,CNPC)
出处
《中国石油勘探》
CAS
CSCD
北大核心
2021年第2期77-84,共8页
China Petroleum Exploration
基金
国家科技重大专项“塔里木盆地大型地层油气藏分布规律与有利区带评价”(2017ZX05001-001-008)
中国石油天然气股份有限公司重大科技专项“塔里木盆地油气重点勘探领域研究与风险目标优选”(22181A01201)。
关键词
阴极发光
物源
亚格列木组
石英
长石
地震属性
沉积相
cathodoluminescence
provenance
Yageliemu Formation
quartz
feldspar
seismic attributes
sedimentary facies
