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通过对岩心、录井、测井及地震资料的综合研究,识别出冲积扇和扇三角洲等8种沉积相类型,并组合为冲积沉积体系、河流—三角洲沉积体系、水下扇—扇三角洲沉积体系和湖泊—深水重力流沉积体系等4种类型。研究表明在箕状单断凹陷的构造背景下,十屋断陷早期以冲积沉积体系为主,从沙河子组沉积期至泉头组沉积期,西部断裂带及北部陡坡带沉积体系由冲积沉积体系演化为水下扇—扇三角洲沉积体系,东南缓坡带的沉积体系由滨—浅湖相沉积体系演化为辫状河三角洲—河流相沉积体系,中部沉积类型多样。
Through comprehensive study of core, logging, well logging and seismic data, eight types of sedimentary facies such as alluvial fan and fan delta are identified and combined into alluvial sedimentary system, river-delta sedimentary system, underwater fan-fan delta deposition System and lake - deep water gravity flow deposition system and other four types. The study shows that in the context of the half-graben monotonic sag, the early Shihuayou fault was dominated by the alluvial sedimentary system. From the depositional period of Shahezi Formation to the deposition of Quantou Formation, the sedimentary system of the western fault zone and the northern steep slope zone were composed of alluvial deposits The system evolved into an underwater fan-fan delta depositional system. The sedimentary system of the southeast gentle slope belt evolved into a braided river delta-fluvial facies sedimentary system from the shallow foreland sedimentary system, and the central sedimentary facies varied.