新型空心分注工艺的研究与应用

Research and application of a modern hollow separate layer water injection technique

随着油田开发进入后期,层间矛盾越来越突出,分层注水工艺是目前解决层间矛盾最有效、最经济的一种途径。针对江苏油田储层物性差,非均质性较强,夹层薄,斜井多,井斜大等特点,目前所采用的偏心、液力投捞分注工艺不能满足于小卡距、大斜度和同位素测试要求,为改善层间矛盾,提高开发效果,研制了一种新型空心分注工艺,有效解决了薄夹层、大斜度井的分注难题,并在现场的应用过程中取得了良好的应用效果。

At later stage of oilfield development,the interlayer conflicts are more and more prominent.As we all known,the technique of separate layer water injection is the most efficient and economical approach to solve the interlayer conflicts.Aimed at the poor reservoir physical properties,strong anisotropy and thin interlayer,excessive inclined well and big well deviation,the adopted technique of separate layer water injection presently can't satisfy the small chuck distance and large degree of inclination.In order to improve the interlayer conflicts and enhance developed effect,this paper develops a modern technique of hollow separate layer water injection,which can availability solve the encountered problem and acquire a good effect in field applied process.