低密度水包油钻井液在中原油田水平井的应用  

Application of Oil-in-water Low-density Drilling Fluid in Horizontal Wells of Zhongyuan Oilfield

作　　者：郑德荣[1] 孙善刚[2] 李国保[3] 黄宁[2] 史沛谦[2] 

机构地区：[1]中原石油勘探局钻井三公司,河南濮阳457001 [2]中原石油勘探局钻井工程技术研究院,河南濮阳457001 [3]中原石油勘探局钻井一公司,河南濮阳457001

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

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.

关 键 词：欠平衡 低密度 钻井液 水平井 水包油 储层保护 

分 类 号：TE254[石油与天然气工程—油气井工程]