井楼、古城油田互层状稠油油层吞吐后剩余油潜力

井楼、古城油田互层状稠油油层累计有效厚度在5～20 m,经过20多年的开发,因储层平面上非均质性严重,储量动用不均,纵向上高渗透层段蒸汽吞吐动用高,中低渗透层剩余油富集;平面上剩余油主要分布在井网控制程度低的区域,分流河道侧缘和分流间湾处.认清剩余油潜力分布,针对剩余油潜力状况,采用相应调整措施,在稠油后备资源不足的情...

The residual oil potential of interbedded heavy oil reservoirs after stimulation in Jinglou, Gucheng oilfields

The cumulative effective thickness of the interbeded heavy oil reservoirs in Jinglou,Gucheng oilfield is up to 5～20m.After over 20 years of development,due to the severe reservoir heterogeneity,the producing level of reserves are uneven in plane;the producing level of steam stimulation is high in highly permeable layers and residual oil mainly accumulated in medium and low permeable layers in vertical.The residual oil mainly distributed in the regions with low level of controlling well pattern,lateral side of distributary channel or the gulf between the distributary channel in plane.So as for the residual oil potential,we should make clear the distribution of residual oil,take effective measures to improve the utilization of existing resources under the circumstance of lack of backup resources.So it is very important for the continuous stable production of heavy oil.