Analysis on sedimentary provenance and palaeocurrent in Yao I Member in northern Gulong area

Yao I Member in Putaohua oilfield is one of important exploration formations in northern Gulong area controlled by north and south provenance.Predecessor about boundary of north and south provenance has great differences.Provenance and palaeocurrent direction in the formation are analyzed by using heavy mineral method,clastic rock method,sedimentary method and formation dip log method,to basically determine boundary of two provenances,thereby providing reliable foundation for evaluating reservoir characteristics,and studying sedimentary facies and reservoir features.