slim hole drilling

基本解释

Through a comparison, the economic benefit in slim-hole drilling for coalbed gas has been analyzed.
通过与常规煤层气试验井对比，分析了煤层气小井眼钻井的经济效益。
Developed step by step, the technology of sidetrack drilling horizontal well in slim-hole is relatively mature, whole it's fist time to apply it in Dagang oilfield.
小井眼侧钻水平井技术经过不断的完善已基本成熟，但在大港油区内应用属首次。
The brief description is given of the positive ion polymer mud system. A preliminary study hasbeen conducted in slim-hole coal geologic drilling resulting in some perfect effects.
对阳离子聚合物泥浆系统作了简要介绍．并在小口径煤田地质钻探中作了初步应用研究，取得一定效果。