| 摘要 |
A drillpipe line installation system, the drillpipe string being composed of drillpipe sections which are added and removed to increase and decrease the length of the drillpipe, and a length of cable is disposed within the drillpipe string. The length of this cable is greater than that of the drilipipe string when the cable is put in the drill pipe. The system includes a lower cable storage means which stows the cable in a compact manner and pays the cable out when the length of the drillpipe is increases, and an upper cable storage means which can take up the cable in a compact manner when the length of the drillpipe is decreased.
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