Safety technology rules for underbalanced drilling 欠平衡钻井安全技术规程
2.
Specification for underbalanced drilling technology - part 1 : methods for design 欠平衡钻井技术规范.第1部分:设计方法
3.
Specification for underbalanced drilling technology - part 2 : the outfit requirements of the wellhead pressure control and surface equipment 欠平衡钻井技术规范.第2部分:井口压力控制装置及地面装置配备要求