车2井区齐古组油藏因其油层岩性具有较强水敏性,没有相应配套的注水开发工艺而不能注水补充能量,造成地层亏空严重。1998年通过地质分析,防膨剂筛选,室内岩心模拟试验,现场试注,研究编制了注水开发工艺方案,设计建设变排量注水流程。工艺方案采用段塞式加药注入方式,较连续加药注水方式注水成本有了大幅下降。 Chek 2 reservoirs in Well Chek 2 have strong water sensitivity due to the lithology of their reservoirs, and can not be replenished with water due to their lack of corresponding waterflood development technology, resulting in a serious shortage of groundwater. In 1998, through the geological analysis, screening of anti-swelling agent, indoor core simulation test, site test injection, the research developed a water injection development process plan, design and construction of variable displacement water injection process. Scenario uses slug dosing injection method, compared with continuous dosing water injection water costs have dropped significantly.