Slickline power unit on coiled tubing provides innvative solution for setting a nippleless lock in a multilateral completion

摘要

The procedure most often used for drilling laterals from horizontal completions requires a retrievable bridge plug to be set in the casing. The bridge plug serves as the base for orienting and setting the whipstock used to mill the window in the casing so that the drilling of the lateral section can be initiated. In recent years, monobore completions have allowed operators to drill lateral sections through the tubing. Using coiled tubing drilling technology, this procedure can often be performed without killing the well and without pulling the present completion. With this method, a horizontal lateral can be drilled with the well flowing, which allows efficient removal of the cuttings and minimizes formation permeability impariment.