sensor system for use in an underground well, intumescent well tool system, intumescent plug and method for determining that an intumescent plug has been seated

摘要

sensor system for use in an underground well systems and methods are provided for activating and monitoring intumescent material in an underground well. a sensor system for use in an underground well includes an inturnescent material and at least one sensor that is moved to a well hole surface in response to swelling of the intumescent material. · another sensor system includes a sensor that detects swelling. of an intumescent material. a well tool inturnescent system includes a base tube, an intumescent material on the outside of the base tube and eccentric compensation to induce rotation of the intumescent material around a longitudinal axis of the base tube.