| 摘要 |
The present invention generally relates to a method and apparatus for performing an operation in a tubular. In one aspect, a method comprises positioning an apparatus in the tubular, the apparatus having a tractor portion and an auxiliary module. The method further includes operating the tractor portion to move th e apparatus through the tubular and operating the auxiliary module to perform the operation in the tubular. In another aspect, an apparatus for use in a tubul ar is provided. The apparatus comprises a tractor having a drive member for moving the apparatus in a desired direction, a turbine member adapted to be driven by moving fluid and a conversion member for converting movement of the turbine member to power the drive member. The apparatus further includes an auxiliary module f or use in performing an operation in the tubular
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