Abstract: The invention is a controller functionally associated with a reservoir model, a well network model, and a processing plant model and is adapted to optimize any one, two, or all three of the models. The controller can optimize the models using multiple, the same, or different optimizer modules.

Abstract: A system and method is provided for facilitating remote real-time surveillance, management, optimization, and control of pumping systems at a wellsite. A variety of sensors are deployed along pumping systems, such as electric submersible pumping systems, positioned in wellbores. Data from the sensors is output in real-time to a remote location via a network. The system analyzes the data to identify problems and potential problems in the pumping systems and suggest possible causes and corrective measures. The network can be used to provide two-way communication such that control signals may then be sent from the remote location to the pumping systems. Alarms may also be triggered when sensor data or data trends fall outside predetermined ranges.

Abstract: A valve assembly to control the intake of fluid. The valve assembly has a valve body and a valve choke disposed therein. The valve choke has a choke bore through the interior of the valve choke. The valve choke has a plurality of orifices to the choke bore spaced at intervals along the valve choke. A seal is disposed between the valve body and valve choke. The valve system is operable to position the valve choke so that the seal is positioned between the valve body and the valve choke at the intervals between the plurality of orifices.

Abstract: Methods for recovering a LWD or MWD data signal in the presence of mud pump noise are provided and generally comprise calibrating the drilling mud pressure as a function of the mud pump piston position, and then tracking the piston position during transmission of the LWD or MWD data signal and using the calibration information to subtract out the mud pump noise. Calibration is accomplished in the absence of the LWD or MWD data signal to provide a correlation between mud pump piston position and the drilling mud pressure. Then, when the LWD or MWD data signal is being generated, the mud pump piston position is tracked such that the pressure due to the pump can be subtracted and the LWD or MWD signal recovered.