CAJ | 학술논문

为了探究焉耆盆地博湖坳陷岩性圈闭发育的有利区带,在地震层序划分的基础上,利用地震波振幅、频率、连续性、内部结构以及外部形态等特征,在研究区目的层划分出6种地震相类型。通过井-震结合,将地震相转化为与之相对应的沉积相。结果表明：三工河组下段主要发育冲积扇、辫状河三角洲平原、三角洲前缘、滨浅湖、浊积扇、半深湖等6种沉积相（亚相）类型;同时该区发育5个规模较大的沉积体,大体上对应着北西、北东及南部3个物源区。综合分析认为,三工河组下段整体上岩性圈闭发育条件较差,局部发育的河口砂坝、滨浅湖滩坝、浊积扇等可以形成岩性圈闭。
위료탐구언기분지박호요함암성권폐발육적유리구대,재지진층서화분적기출상,이용지진파진폭、빈솔、련속성、내부결구이급외부형태등특정,재연구구목적층화분출6충지진상류형。통과정-진결합,장지진상전화위여지상대응적침적상。결과표명：삼공하조하단주요발육충적선、변상하삼각주평원、삼각주전연、빈천호、탁적선、반심호등6충침적상（아상）류형;동시해구발육5개규모교대적침적체,대체상대응착북서、북동급남부3개물원구。종합분석인위,삼공하조하단정체상암성권폐발육조건교차,국부발육적하구사패、빈천호탄패、탁적선등가이형성암성권폐。
In order to study the favorable distribution area of lithologic traps in Bohu Depression of Yanqi Basin,based on seismic sequence division,the amplitude,frequency,continuity,internal structure and external form of seismic reflection wave were applied to analyze the seismic facies in the study area,and the seismic facies of the target zone can be divided into six types.The seismic facies is transformed into sedimentary facies by means of well-seismic combination.The result shows that six types of sedimentary facies are distinguished in the lower segment of Sangonghe Formation of Bohu Depression,including alluvial fan,braided river delta plain,delta front,shore-shallow lacustrine,turbidite fan and semi-deep lake facies.Meanwhile,there developed five types of larger sedimentary bodies,which corresponds to the three provinces in the northwest,northeast and south of the study area.It is considered that lithologic traps are less developed in the lower segment of Sangonghe Formation,only formed in the locally developed mouth bar,shore-shallow lacustrine beach bar and turbidite fan.