利用动态调整方法改善赵凹油田非均质油藏开发效果

Using dynamic adjustment to improve development effect of inhomogeneous reservoir of Zhaowa oilfield

赵凹油田储层属于近物源陡坡型扇三角洲沉积体,储层非均质性严重,目前油田进入高含水开发阶段,地下剩余油分布更加复杂、隐蔽,挖潜难度大,需采取有效的技术手段在剩余油富集区注水井与采油井间建立有效的驱动压差,促进剩余油的合理流动。通过实施合理动态调整,促进了液流转向,扩大了注水波及体积,提高了注水效率,单元开发形势明显好转。

Zhaowa oilfield belongs to fan delta sedimentary bodies of steep slope type nearby provenances and the reservoir heterogeneity is serious.At present,the oilfield has entered into development stage of high water cut and the underground residual oil distribution is more complex and hidden.As there is great difficulty in tapping the potential,effective methods should be adopted.The effective driving pressure difference between water injection wells and production wells should be established to promote the rational flow of remaining oil.Through reasonable and dynamic adjustment,the fluid circulation has been promoted,the water-flood sweep volume has been enlarged and the efficiency of water injection has been improved.And then the unit development situation has been improved obviously.