提高马25井区开发效果的主要做法及效果

马25井区油层断失现象比较普遍,断失层剩余油富集,利用老井侧钻挖掘断失层剩余油是有效的增油手段;马25井区注入水水质差,对地层产生了严重的伤害,只有改善注水水质,利用水井增注解除地层伤害,方能保证油井稳产;马25井区的层间差异大,非主力层储层物性差,要保证挖潜效果,必须油、水并重。

Practice of Enhancing Development Efficiency in Ma25 Wellblock

Recovering remaining oil from broken--off layers by sidetracking maturing wells is effective in increasing 0il production of Ma25 Wellblock where broken--off oil layers are common and contain plenty of remaining oil. Due to poor quality of injected water, the stratum in Ma25 Wellblock is severely damaged. To ensure steady output of oil wells in this wellblock, it is essential to improve water quality and relieve damage on the stratum through injection stimulation. In light of big difference between its layers and poor reservoir physical property in its non--main layers, equal priority must be given to oil and water to ensure potential ＇digging efficiency in Ma25 Wellblock.