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油田进入注水开发阶段以后,随着长期的注水开发,非均质性油层中渗透率较高的部分油层最先吸水,而且与连通油井之间极易形成水线,其他渗透率相对较低的油层得不到有效注水,产生单层突进现象,致使连通采油井的含水快速上升,致使注水的低效、无效循环。为了缓解这些矛盾,我们在油田开发中通常采用分层注水,但是仅仅采取分层注水的发法是不够的,调剖技术的应用在缓解油田注采矛盾的问题上起到了非常重要的作用。我们通过分析总结,正确的选取调剖的类型,采用先进的调剖工艺、选择最佳的调剖时机,最大限度的发挥调剖作用。
After the oilfield enters the waterflooding stage, some oil layers with higher permeability in the heterogeneous oil layer will be the first to absorb water with the long-term waterflooding development, and water lines will be easily formed between them and the connected oil well, and the other permeability will be relatively low The effective injection of oil layer, resulting in a single sudden phenomenon, resulting in rapid recovery of water connected oil well, resulting in ineffective water injection, ineffective circulation. In order to alleviate these contradictions, we usually use stratified waterflooding in oilfield development. However, stratified waterflooding is not enough. The application of profile control technology plays a very important role in alleviating the contradiction between injection and production in oilfields. Through analyzing and summarizing, we choose the right profile of profile control, adopt advanced profile control technology, choose the best timing of profile control, and maximize the profile control effect.