帮忙翻译一下红色的部分，谢谢……？ 帮忙翻译一下红色的部分，谢谢…… when there is water over the prospective hydrocarbons,the equipment needed to drill becomes more complicated.the deeper is the water, the more complex theoperation becomes. in shallow water, such as encounteredin swamps, barge rigs are used. a barge rig is simply adrilling rig transported on a shallow water boat. one of the first was mr. charlie,' which is shown infigures 3.10 and 3.11. mr. charlie, the first transportablesubmersible drilling rig, was built in 1953 and served theindustry for 32 years. with submersible drilling rigs, theflotation devices are flooded with seawater and sink tothe bottom, providing a stable base from which to operate. as the water gets deeper offshore, we use more elaboratedrilling rigs and flotation systems. in water depths upto about 400 feet, we use “jack-up” rigs, which simply lift themselves out of the water to drill.查看更多
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