Abstract: A system for monitoring a parameter of a subterranean formation using swellable materials is disclosed. The system may include a sensor device configured to detect a parameter of a subterranean formation. The system may also include a swellable material configured to position the sensor device toward a surface of the subterranean formation by swelling of the swellable material. The system may further include a telescoping section coupled to the sensor device and emplaced in the swellable material. The telescoping section may be configured to extend with the positioning of the sensor device.

Abstract: A disclosed method and associated apparatus provide convenient and accurate control of rates of fluid flow within a subterranean well. In one described embodiment, an apparatus has multiple tubing strings installed within multiple wellbores intersecting formations or intervals into, or from which, fluid is to be flowed. A remotely controllable flow regulating device is provided for each of the formations or intervals to regulate the rate of fluid flow through its associated tubing string. In another described embodiment, a single tubing string is utilized with multiple remotely controllable flow regulating devices interconnected therein.

Abstract: A method and apparatus for establishing a fluid plug within a well bore which can then be substantially destroyed upon demand to permit reestablishment of the well within a short period of time thereafter. Increased pressure actuates a plug rupture mechanism which destroys the integrity of the plug and allows the plug to be substantially eliminated from the wellbore within a short period of time thereafter. In described preferred embodiments, the plug is comprised of a salt and sand mixture which is highly resistant to fluid compressive forces but is subject to destruction under shear tension forces. The plug may be encased within a plug sleeve which is, in turn, encased within a plug housing which may be disposed within the well bore. The sleeve is associated within the housing so that fluid may be displaced about the plug sleeve as the housing is disposed into the well bore.