Designation:A860/A860M–10Standard Specification forWrought High-Strength Ferritic Steel Butt-Welding Fittings1 This standard is issued under thefixed designation A860/A860M;the number immediately follow
涪陵页岩气田钻井关键技术艾军;张金成;臧艳彬;许明标【摘 要】T he complex geological conditions in the Fuling region have led to many drilling problems such as inconsistent rate of penetrations ,different drilling cycles and compl
涪陵页岩气田钻井关键技术艾军;张金成;臧艳彬;许明标新年上班第一天【摘 要】T he complex geological conditions in the Fuling region have led to many drilling problems such as inconsistent rate of penetrations ,different drilling cycles an