Use of Pressure Activated Sealants to Cure Sources of Casing Pressure

Pressure leaks in a wellhead or in downhole tubulars or equipment can lead to inoperable subsurface safety valves, casing pressure, environmental pollution, loss of production and, in extreme cases, blowouts. As such, it is essential to the safe and environmentally sound operation of a well that the sources of the pressure leaks be identified and cured. Use of a new and unique pressure activated sealant technology allows utilization of a method of repairing wellhead and downhole leaks in-situ without employing any mechanical downhole operations. Only at the point of differential pressure, through the leak site, will the sealant reaction occur and create a bond across the leak. Use of the pressure activated sealant technology obviates the need to employ expensive and risky rig or wireline operations to cure downhole leaks.