CAJ | 학술논문

近年来的勘探实践表明,通南巴地区上三叠统须家河组具有良好的油气勘探前景.通过外剖面及岩心观察,结合测井和各种分析鉴定资料以及沉积相标志的综合分析,识别出冲积扇、河流、湖泊三角洲、湖泊(受间歇性海水改造)和海相三角洲5种沉积体系,建立了海陆过渡三角洲、冲积扇—辫状河三角洲—湖泊两种沉积演化模式.研究结果还显示,本区沉积体系主要受控古气候、构造运动和物区母岩性质:古气候控制着须家河组煤系地层特殊的砂、泥间互的沉积结构及生储盖组合;构造运动控制着各沉积时期的沉积体系类型及砂体展布;不同物区母岩性质影响沉积物的组分与结构.
근년래적감탐실천표명,통남파지구상삼첩통수가하조구유량호적유기감탐전경.통과외부면급암심관찰,결합측정화각충분석감정자료이급침적상표지적종합분석,식별출충적선、하류、호박삼각주、호박(수간헐성해수개조)화해상삼각주5충침적체계,건립료해륙과도삼각주、충적선—변상하삼각주—호박량충침적연화모식.연구결과환현시,본구침적체계주요수공고기후、구조운동화물구모암성질:고기후공제착수가하조매계지층특수적사、니간호적침적결구급생저개조합;구조운동공제착각침적시기적침적체계류형급사체전포;불동물구모암성질영향침적물적조분여결구.
@@@@Exploration and research show that the Upper Triassic Xujiahe Formation has good prospect for explo-ration in Tongnanba area. Based on observation of outcrops and core, combining with comprehensive analysis of well logging and analysis data, as well as facies marks, the paper concludes that Xujiahe Formation has a composite sedimentary system consisting of alluvial fans, fluvial, lacustrine deltas, lacustrine (affected by seawater), marine deltas facies. The main sedimentary system models are marine-continental transition delta and alluvial fans-braided river delta-lacustrine. It is also revealed that the paleoclimate, tectonic movement and provenance had controlled the sedimentary system. The paleoclimate controlled the especial sedimentary structure formed by alternating lay-ers of mudstone-sandstone and source-reservoir-cap assemblage of Xujiahe Formation. Tectonic movement con-trolled sedimentary system types and sand-body distribution during every sedimentary period. The property of parent rock in different provenances have controlled the composition and the texture of sediments.