摘要
WZ油田W6断块主要产油层为阜一段和泰一段,由于沉积特征、成岩矿物、孔渗特征以及敏感性矿物不同,造成储集层的潜在伤害类型的差异。速敏和水敏是阜一段储层伤害的主要因素,因此在注水、修井、酸化、压裂等作业过程中应注意采取防膨措施,控制注水压力。泰一段储层具有极强酸敏特性,应以压裂为主,改善注水开发效果,同时在作业过程中注意采取防膨措施。
E1f1 and K2t1 both are main pay zones of W6 fault block in WZ Oilfield. Due to the sedimentary characteristics, diagenetic mineral, porosity and permeability characteristics and sensitivity of different minerals, there is different on types of reservoir potential damages. Because major factors of E1f1 reservoir damage are the velocity sensitivity and water sensitivity, expansion prevention measures should be taken in the operation process of water injection, workover, acidizing, fracturing,etc. ,to control injection water pressure. The K2t1 reservoir is strongly acid sensitive, so fracturing should be mainly carried out to improve the effect of water injection, and expansion prevention measures are simultaneously conducted in the operation.
出处
《复杂油气藏》
2011年第4期59-63,共5页
Complex Hydrocarbon Reservoirs
关键词
WZ油田
储层特征
伤害评价
敏感性
水锁
WZ Oilfield
reservoir characteristics
damage assessment
sensitivity
water lock
