ENGINEERING METHODOLOGY TO TREAT SEVERE LOSS ZONES WITH THIXOTROPIC CEMENT SYSTEM

摘要

A method of treating lost circulation issues stemming from loss zones during the drilling and cementing process through the utilization of a thixotropic cement. The method comprises the steps of encountering a loss zone in a bore hole during drilling or running casing and pumping a treatment fluid into the loss zone, wherein the treatment fluid is a gel capable of gelling, breaking when sheared, and building back shear strength after shearing is removed.