Patent ID: 9038740
Filing Date: 2015-05-26
Classification: E21B

Abstract:
1. A method of forming a plug in a wellbore, the method comprising: disposing a work string in a wellbore, the work string comprising a first tool comprising a port providing fluid communication between an interior space of the first tool to an exterior space to permit placement of the plug in a wellbore; introducing a first fluid volume via the work string to form a plug in the wellbore; and load testing the plug at least in part by applying an axial force on the plug with the work string to determine that the plug is set; wherein the work string comprises a rupture element assembly, wherein the rupture element assembly comprises: a first rupture element configured to rupture at a first predetermined pressure, wherein the first rupture element establishes circulation if the plug has not formed at a position corresponding to the first rupture element, and wherein the first rupture element does not establish circulation if the plug is formed at the position corresponding to the first rupture element; and a second rupture element configured to rupture at a second predetermined pressure, wherein the second rupture element establishes circulation if the plug has not formed at a position corresponding to the second rupture element, and wherein the second rupture element does not establish circulation if the plug is formed at a position corresponding to the second rupture element; wherein the first and second rupture elements are disposed in axially spaced relation; and wherein the rupture element assembly is configured to indicate an upper extent of the plug in the wellbore, the method further comprising: pressurizing a second fluid volume in the work string to determine the upper extent of the plug based, at least in part, on the pressure at which circulation is established.