In recent years, new technology, such as three-dimensional (3D) seismic, has stimulated renewed exploration and development of mature oil fields. The ability to locate and produce previously undiscovered hydrocarbons in mature fields has led to increased drilling activity using sidetracking methods. In mature fields, plugging and sidetracking an existing wellbore is often more cost effective than drilling a new well. Offshore, the limited number of unused slots on a platform makes sidetracking the only feasible way to redevelop a field in many cases. Developments in tools and methods have also made sidetracking an economic alternative to conventional fishing jobs, and operators are choosing sidetracking ...
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