Abstract: A submerged hydrocarbon recovery apparatus for the collection and conveyance of fluids from sub surface leaks to the water body surface. The apparatus comprises a hydrocarbon fluid collector having an opening for receiving and collecting fluids emanating from an underwater hydrocarbon leak; a floatation assembly located below the water surface at a depth not affected by surface disturbances; and a conduit extending between the fluid collector and floatation assembly. The apparatus includes components to prevent the formation of hydrates or accumulation of solids that would obstruct the conveyance of fluids.

Abstract: A submerged hydrocarbon recovery apparatus fro the collection and conveyance of fluids from sub surface leaks to the water body surface. The apparatus comprises a hydrocarbon fluid collector having an opening for receiving and collecting fluids emanating from an underwater hydrocarbon leak; a floatation assembly located below the water surface at a depth not affected by surface disturbances; and a conduit extending between the fluid collector and floatation assembly. The apparatus includes components to prevent the formation of hydrates or accumulation of solids that would obstruct the conveyance of fluids.

Abstract: An electronic HEMD determines the optimum balance between gas cooling and heat exchanger pressure loss, for any given operating condition, and adjusts the gas flow rate through the exchanger accordingly, to yield the maximum net power savings (and thereby energy savings) afforded by the exchanger. Maintaining the optimum balance between cooling and exchanger pressure loss reduces the amount of energy required to transport a given volume of gas through a pipeline and thereby increases the transmission efficiency of the gas pipeline system. A method of operating a heat exchanger on a natural gas transmission pipeline using a control algorithm that in turn controls the position of a heat exchanger bypass valve.

Abstract: An electronic HEMD determines the optimum balance between gas cooling and heat exchanger pressure loss, for any given operating condition, and adjusts the gas flow rate through the exchanger accordingly, to yield the maximum net power savings (and thereby energy savings) afforded by the exchanger. Maintaining the optimum balance between cooling and exchanger pressure loss reduces the amount of energy required to transport a given volume of gas through a pipeline and thereby increases the transmission efficiency of the gas pipeline system. A method of operating a heat exchanger on a natural gas transmission pipeline using a control algorithm that in turn controls the position of a heat exchanger bypass valve.