The RWD is an effective means to solve sticking in complex deep wells, apply the un-conventional well profile and improve cementing quality.
RWD随钻扩眼是解决复杂深井阻卡、非常规井身结构应用和提高固井质量的有效手段。
2
The existing dispersants cannot meet the cementing requirements of deep and ultra-deep wells, having low temperature tolerance, low brine resistance, retarding, bubbling, and some other problems.
现有分散剂存在抗温耐盐性能不能满足深井、超深井固井要求，有缓凝或起气泡副作用等问题。
3
In this paper the experience of Exploration Company, Zhongyan Petroleum Exploration Bureau, in using displacement fluids in cementingdeep wells is summarised.