The 3-D Architecture of Point Bar and The Forming and Distribution of Remaining oil

摘要

It has generally been considered that remaining oil forming inrnvertical is mainly controlled by permeability succession, thernimportant effects of very thin lateral accretion mudstonern(LAM) interbeds and permeability subsuccession have beenrnneglected. By analyzing the sedimentary processes and efficiencyrnof displacement oil (EDO) of point bar in PI_2 timernunit, Daqin, 0 oilfield, point out that the 3-D architecture ofrnpoint bar is the key of the forming and distribution of remainingrnoil (FDRO) wd that many lunate-shape, oblique, very thinrn(