Patent ID: 8214993
Filing Date: 2012-07-10
Classification: B23P,E21B,Y10T

Abstract:
1. A method of removing a satellite pipe from a pipe bundle that includes multiple satellite pipes supported by a plurality of spaced apart supports that include end supports and intermediate supports, comprising the steps of; a) supporting the pipe bundle in a generally horizontal position; b) providing a hoisting apparatus that includes an overhead rail, said rail extending along the pipe bundle, generally aligned with the pipe bundle; c) attaching a plurality of lifts to selected satellite pipe, each lift having a carriage and being supported by a carriage, enabling the lift to travel along the rail; d) separating the satellite pipe from the intermediate supports and at least one of the end supports; e) elevating the selected satellite pipe with the lifts of step “c”, each lift being able to change the elevation of the pipe independently of the other lifts; and f) moving the pipe longitudinally toward one of the end supports, wherein the lifts move simultaneously with the satellite pipe, each lift carriage traveling in the same direction upon the rail.