四川地质学报
四川地質學報
사천지질학보
ACTA GEOLOGICA SICHUAN
2012年
4期
424-427
,共4页
沉积相%扇三角洲%沙一段%新开油田
沉積相%扇三角洲%沙一段%新開油田
침적상%선삼각주%사일단%신개유전
Xinkai oilfield%fan delta%the first Member of the Shahejie Formation%facies
通过岩心观察描述和沉积相分析,结合测井、录井、分析化验资料综合分析结果表明:开38、39井区沙一段发育扇三角洲前缘亚相和前扇三角洲亚相.进一步将沙一段扇三角洲前缘亚相细分为水下分流河道、水下分流河道间、河口砂坝及前缘席状砂四个微相.其中以水下分流河道微相为主,河道砂体为本区沙一段主力油层.
通過巖心觀察描述和沉積相分析,結閤測井、錄井、分析化驗資料綜閤分析結果錶明:開38、39井區沙一段髮育扇三角洲前緣亞相和前扇三角洲亞相.進一步將沙一段扇三角洲前緣亞相細分為水下分流河道、水下分流河道間、河口砂壩及前緣席狀砂四箇微相.其中以水下分流河道微相為主,河道砂體為本區沙一段主力油層.
통과암심관찰묘술화침적상분석,결합측정、록정、분석화험자료종합분석결과표명:개38、39정구사일단발육선삼각주전연아상화전선삼각주아상.진일보장사일단선삼각주전연아상세분위수하분류하도、수하분류하도간、하구사패급전연석상사사개미상.기중이수하분류하도미상위주,하도사체위본구사일단주력유층.
Core observation and study of sedimentary facies in combination with the date of well-log, logging and chemical analyses indicate that the first Member of the Shahejie Formation in the Kai 38, 39 well field may be divided into fan delta front subfacies and pre-fan delta subfacies. The fan delta front subfacies may be subdivided into such four microfacies as underwater distributary channel, inter-underwater distributary channel, channel mouth bar and distal bar and frontal sheet sand. The underwater distributary channel and channel and channel sand bodies are is major reservoirs.
