马36井区提高注水开发效果的认识

Understanding on Improving the Effect of Water-injection Development in Ma-36 Well Area

江汉油田马36井区已进入高含水开发期,注水开发矛盾突出,主要表现在三个方面:注水、存水率低,驱替效果较差;地层压力难以恢复;挖潜难度增大。针对这种情况,提出四点建议:调整注水强度,确保分层注水;将增产增注措施改为以解堵为主的措施;将新下24层与新下25层进行分层开采;调整完善注采井网,挖掘剩余油增产潜力。

The contradiction of water-injection development is acute because high water-cut stage has come in Ma- 36 well area which appears in three aspects First, the rate of water-injection and water-storing is low and driving displacement effect isn＇t very well. Second, formation pressure is difficult to restore. Third, tapping latent power be- comes more difficult. There are four advices. First, To adjust water-injection intensity to ensure layer water-injection. Second, To change the measure of increase production and water-injection into the measure of reducing shielding,. Third, To implement layer mining in Xinxia-24 ＆25 formation. Forth, To adjust and perfect injection -mining well pattern so as to tap latent potentialities of residual oil production increasing.