Abstract

Liner removal to facilitate sidetracking has been proven to be a cost saving solution over drilling new horizontal wells to increase production from existing wells. Most problems that might be encountered when removing casing can be identified prior to beginning a liner removal job. By identifying these potential problems, the proper equipment can be used effectively to keep the job running smoothly. Technical advances in mill design such as the development of a cutting structure that effectively manages the cuttings size and carbide inserts with greater wear resistance have increased the efficiency of the entire operation.

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