欠平衡钻井完井液技术(Ⅱ)——气体型完井液技术

Completion fluid technology for under-balanced drilling (part two) air, mist, foam and aerated fluid

在低压储层进行欠平衡钻井时常选用气体型低密度流体。综述了气体型流,本的发展简史和特点,并分别详细介绍了空气(或天然气)、雾、充气钻井液、稳定泡沫钻井液、硬胶泡沫钻井液的优缺点、关键技术、相应的性能参数以及测试与评价方法。

Gas drilling fluid is often used in UBD in low pressure formation. This paper reviews the history and introduces the property of gaseous fluids. Air drilling, mist drilling, stable foam drilling, stiff foam drilling and aerated drilling fluid are described in detail respectively, including their advantages, disadvantages and interrelated parameters. The testing and evaluation methods are also presented.