Abb Research Ltd.

Dag Kristiansen

Olav Slupphaug

Bjørn Bjune

Veslemøy Kristiansen

Jostein Moe

A method for automatically controlling a flow in a flow line system including a flow line, a flow line inlet and outlet, and a control valve located in the flow line at the outlet. The method includes controlling the opening of the valve with a control unit. An outlet flow rate is measured or estimated from the flow line. The valve is opened. It is determined if a sudden drop occurs in any of the measurements or estimates. It is decided if a liquid blockage in the flow line is present or approaching. If a liquid blockage is indicated as present or approaching, the opening of the valve is increased by an amount determined by the measurements or estimates. Any further manipulation of the valve is inhibited before a non-zero time period has expired. The steps are repeated. Also a system and a computer program product.

Method and a system for enhanced flow line control

A method for automatic feedback control and/or monitoring of an oil and/or gas production system, or part(s) thereof, which includes one or more processing unit(s) and/or one or more flow line(s) and/or one or more controls. The method includes measuring or estimating value(s) of at least one level or pressure or flow rate or load indicator associated with at least one of the processing unit(s) and/or flow line(s) and at least one of calculating setting(s) for the controls based on at least one controlled variable in form of the measured or estimated level or pressure or flow rate or load indicator, including compensating for nonlinearities of the control means or estimating at least one of the oil-, gas-, water-, or liquid flow rate(s) into and/or out of at least one of the processing units and/or flow line(s).

Growing community of inventors

Oslo, Norway

Dag Kristiansen