摘要
根据低压力储层水平井钻井油气层保护要求,通过室内研究形成了密度在0.89~0.99 g/cm3之间可调,具有良好乳化稳定性和流变性,防塌能力强的低密度水包油钻井液配方。在达平1井等井的现场应用中,水包油钻井液性能稳定,易于维护调节,钻井施工安全快速,能够满足低压水平井近平衡、欠平衡钻井和地质要求,保护储层作用明显,收到了良好的应用效果。
To satisfy the requirements of protecting hydrocarbon reservoir of low pressure reservoir horizontal well,by means of research in laboratory,oil-in-water drilling fluid formula with variable density in 0.89-0.99g/cm3 was obtained.This oil-in-water low-density drilling fluid has good capability of emulsion stability,rheological property and anti-sloughing property.The result of application in Daping #1 well showed that the drilling fluid has stable property and can be simply maintained and adjusted for safe and fast drilling operation.It also can satisfy the demands of near-balanced drilling underbalanced drilling for low pressure horizontal well and geologic requirement.There are obvious effects for hydrocarbon reservoir protection.
出处
《探矿工程（岩土钻掘工程）》
2010年第9期15-18,共4页
Exploration Engineering:Rock & Soil Drilling and Tunneling
关键词
欠平衡
低密度
钻井液
水平井
水包油
储层保护
underbalanced
low density
drilling fluid
horizontal well
oil-in-water
reservoir protection
