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国际钻塔设备公司现在制造的垂直伸缩式钻塔;在海洋钻井平台或海上自举式钻井平台上占去最小的钻台面积。据该公司的总工程师 David Limbert说:该钻塔上的大勾负荷能力从428000磅开始到大约一百万磅,能满足钻进工作的最大需要量。这种新钻塔的底座范围可小至14英尺,每个钻塔由四段组成。即可容易地用具有40英尺长的大卡车、平底船或其它船只运载.可用钻机上自有的卷扬机使得钻塔竖立。据 Limbert 所说:这种钻塔是应用该
Vertical telescopic rigs now manufactured by International Drilling Rig Equipment Company; account for the smallest area of rig floor on offshore or offshore jack-up rigs. According to David Limbert, the company’s chief engineer, the large load capacity on the rig rises from 428,000 pounds to about a million pounds to meet the maximum drilling requirements. The base of this new rig can range as little as 14 feet and each consists of four sections. It can be easily carried by a truck, quay or other vessel with a length of 40 ft. The rig can be erected using its own winch. According to Limbert: This rig is applied