摘要
储层的水敏特征评价对于注水开发至关重要 ,是保护油藏、防止油藏污染的重要参数 .从岩矿资料及黏土矿物成分看 ,长 2储层水敏矿物含量很少 ,从岩矿角度分析应该无水敏或弱水敏 .但试验结果表明长 2储层为中等水敏 ,显然两者是矛盾的 .利用试验方法来验证长 2储层存在的水敏特征 ,其伤害油藏水的主要原因是外来低矿化度流体的介入破坏了储层黏土矿物与地层水的原始平衡状态 ,引起黏土矿物品格膨胀分散运移 ,堵塞喉道造成的 .
The evaluation of reservoir water sensitivity is important to the water flooding development and to protecting oil reservoirs and preventing oil reservoirs from being contaminated. The mineral data and the components of clay minerals show that Chang 2 formation contains little water sensitive minerals, so it should be of no water sensitivity or slight water sensitivity. However, the experimental result indicates Chang 2 formation is moderate water sensitivity. The two results are contradictory to each other. In this paper, the water sensitivity of Chang 2 is determined in several methods. It is concluded that it is of moderate water sensitivity.
出处
《西安石油学院学报（自然科学版）》
2003年第1期24-26,共3页
Journal of Xi'an Petroleum Institute（Natural Science Edition)
关键词
方法
验证
靖东油田
储层
水敏特征
试验
渗透率
离子交换
Jingdong oilfield
reservoir
water sensitivity characteristic
test
permeability
ion exchange
