Abstract: A method for detecting an oil mass covered by ice includes collecting polarimetric radar data at different depths into the ice using at least one airborne platform moved about a search area above the ice so that the polarimetric radar data defines polarimetric volumetric radar data. The polarimetric volumetric radar data is processed based upon at least one polarimetric feature to thereby detect an oil mass covered by the ice.

Abstract: A method for detecting an oil mass covered by ice includes collecting alert data at a first probability of detection using an airborne platform moved about a search area above the ice. An alert area having a likelihood of an oil mass covered by the ice is determined based upon the alert data. Confirmation data is collected at a second probability of detection higher than the first probability of detection using a ground platform moved over the alert area. An oil mass covered by the ice is detected based upon the confirmation data.

Abstract: A method for detecting an oil mass covered by ice includes collecting radiometric data different frequencies, corresponding to respective different depths into the ice, using at least one airborne platform moved about a search area above the ice so that the radiometric data defines radiometric volumetric data. The radiometric volumetric data is processed to thereby detect an oil mass covered by the ice.

Abstract: An apparatus for use in delivering tubulars to an elevated work area is described. A slideway for receiving a tubular is mounted on the leading end of an extendable carriage. The opposing end of the carriage is pivotally fixed to a frame assembly. Extension of the carriage drives the leading end towards a work area. A carriage support ramp receives the leading end of the carriage as it is extended, and guides the leading end towards the elevated work area for discharge of the tubular from the slideway.

Abstract: A method for detecting an oil mass covered by ice includes collecting alert data at a first probability of detection using an airborne platform moved about a search area above the ice. An alert area having a likelihood of an oil mass covered by the ice is determined based upon the alert data. Confirmation data is collected at a second probability of detection higher than the first probability of detection using a ground platform moved over the alert area. An oil mass covered by the ice is detected based upon the confirmation data.

Abstract: A method for detecting an oil mass covered by ice includes collecting radiometric data different frequencies, corresponding to respective different depths into the ice, using at least one airborne platform moved about a search area above the ice so that the radiometric data defines radiometric volumetric data. The radiometric volumetric data is processed to thereby detect an oil mass covered by the ice.

Abstract: A method for detecting an oil mass covered by ice includes collecting polarimetric radar data at different depths into the ice using at least one airborne platform moved about a search area above the ice so that the polarimetric radar data defines polarimetric volumetric radar data. The polarimetric volumetric radar data is processed based upon at least one polarimetric feature to thereby detect an oil mass covered by the ice.

Abstract: An apparatus for use in delivering tubulars to an elevated work area is described. A slideway for receiving a tubular is mounted on the leading end of an extendable carriage. The opposing end of the carriage is pivotally fixed to a frame assembly. Extension of the carriage drives the leading end towards a work area. A carriage support ramp receives the leading end of the carriage as it is extended, and guides the leading end towards the elevated work area for discharge of the tubular from the slideway.

Abstract: A pipe handling apparatus for raising and lowering pipe to and from a raised derrick work floor. The apparatus comprises a longitudinally-extending base, with a longitudinally-extending cavity therein. An elongate, longitudinally-extending boom member is provided, which is adapted for raising out of and nestable positioning in such cavity. The boom member has a longitudinally-extending trough therein on an upperside surface thereof, adapted to receive at least one section of pipe. At least one arm member is coupled to the boom member for raising a proximal end of such boom member. A carriage member, slidably coupled to the boom member, is moveable longitudinally along the boom in the trough. The carriage member is adapted to engage and slidably transport one end of the pipe along the trough. Motive means are provided to permit powered movement of the carriage member along the boom.

Abstract: A pipe handling apparatus for raising and lowering pipe to and from a raised derrick work floor. The apparatus comprises a longitudinally-extending base, with a longitudinally-extending cavity therein. An elongate, longitudinally-extending boom member is provided, which is adapted for raising out of and nestable positioning in such cavity. The boom member has a longitudinally-extending trough therein on an upperside surface thereof, adapted to receive at least one section of pipe. At least one arm member is coupled to the boom member for raising a proximal end of such boom member. A carriage member, slidably coupled to the boom member, is moveable longitudinally along the boom in the trough. The carriage member is adapted to engage and slidably transport one end of the pipe along the trough. Motive means are provided to permit powered movement of the carriage member along the boom.