Abstract: A hydrate inhibitor comprising a boronic acid moiety and associated methods and compositions.

Abstract: A hydrate inhibitor comprising a sulfolane derivative and associated methods and compositions.

Abstract: A hydrate inhibitor comprising a boronic acid moiety and associated methods and compositions.

Abstract: A hydrate inhibitor comprising a sulfolane derivative and associated methods and compositions.

Abstract: A method, system, controller and computer program product, for controlling the flow of a multiphase fluid comprising gas and liquid in a conduit, which conduit is provided at a downstream side with a flow restriction and a valve having a variable aperture, which method comprises the steps of selecting a flow parameter of the multiphase fluid in the conduit as a function of a pressure difference over the flow restriction; selecting a setpoint for the flow parameter; allowing the multiphase fluid to flow at a selected setpoint of the aperture of the variable valve; determining the pressure difference over the flow restriction and determining an actual value of the flow parameter from the pressure difference, without using a measurement of another variable in order to determine an actual gas/liquid ratio pertaining to the pressure difference at the flow restriction; controlling the flow of the multiphase fluid by determining a deviation of the flow parameter from its setpoint, determining an updated setpoint

Abstract: A method, system, controller and computer program product, for controlling the flow of a multiphase fluid comprising gas and liquid in a conduit, which conduit is provided at a downstream side with a flow restriction and a valve having a variable aperture, which method comprises the steps of selecting a flow parameter of the multiphase fluid in the conduit as a function of a pressure difference over the flow restriction; selecting a setpoint for the flow parameter; allowing the multiphase fluid to flow at a selected setpoint of the aperture of the variable valve; determining the pressure difference over the flow restriction and determining an actual value of the flow parameter from the pressure difference, without using a measurement of another variable in order to determine an actual gas/liquid ratio pertaining to the pressure difference at the flow restriction; controlling the flow of the multiphase fluid by determining a deviation of the flow parameter from its setpoint, determining an updated setpoint for

Abstract: Disclosed is a method for suppressing and controlling liquid slugs and gas surges in a stream of multiphase fluid flowing from a flowline into a gas/liquid separator having a liquid outlet with a liquid flow control valve, and a gas outlet with a gas flow control valve, and a control system for monitoring said control variables and adjusting said control valves which comprises: a) Measuring at least one control variable selected from the group of the liquid level in the separator, the liquid flow rate in the liquid outlet, the gas flow rate in the gas outlet, the sum of the liquid flow rate in the liquid outlet and the gas flow rate in the gas outlet, and the fluid pressure at or near the separator; b) Entering said measurements to a control system with a controller for receiving said values as a mathematical number and responding to preset numbers; c) Said control system adjusting said liquid and gas flow control valves to reduce a difference between a selected control variable and a pre-set reference val