摘要
通过分析和评价涠洲12-1油田中块原修井液对储层产生损害的影响因素,确定了防止储层损害的有效措施和方法,即通过在修井液中加入表面活性剂CZZ和WPD来降低水锁产生的损害,并评价了2种表面活性剂降低油/水界面张力的能力、配伍性、抗温性以及乳化性。同时对易漏失的低压储层开展了改进型修井液技术研究,包括暂堵剂的优选、性能评价、储层保护研究、解堵试验评价、与地层流体配伍性评价和现场施工工艺研究,并提出了解除损害的有效方法。
Influence factors of the original workover fluid on the formation damage in the Middle Block of WZ12-1 oilfield was determined, and effective solutions were proposed. Surfactants CZZ and WPD was found to reduce the formation damage induced by water locking. The two surfactants were evaluated in surface tension,compatibility,temperature resistance and emulsification.At the same ti me,the modifiedworkover fluid was developed which was available tothelow-pressure andleaking reservoir.Furthermore,the effect...
出处
《钻井液与完井液》
CAS
北大核心
2006年第4期16-20,24+86-87,共8页
Drilling Fluid & Completion Fluid
关键词
低压储层
修井液
水锁
临时性封堵
lowpressure reservoir
workover fluids
water locking
temporary plugging
