This article introduces the construction technology, facilities layout, derricksystem security, quality and safety requirements.
结合工程实践对施工工艺、设施布置、井架制安、质量安全要求进行了介绍。
2
Derrick: the main hoist winch and a system of elevators lifts 1,250 tons of pipes and machinery through the 72.
钻塔：主起吊绞车和升降机系统可通过船底72英尺宽的开口，提升1,250吨重的管道和机械。
3
As a new riser handling system, the vertical riser handling system is an extensional application of successful derrick drill stern vertical handling system in drilling machines.