System and method for optimizing production in an artificially lifted well
AssigneeSchlumberger Technology Corporation
InventorsJulian R. Cudmore, Julian B. Haskell, Francis X. T. Miranda
Life of this patent
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Abstract
A system and method is provided for optimizing production from a well. A plurality of sensors are positioned to sense a variety of production related parameters. The sensed parameters are applied to a wellbore model and validated. Discrepancies between calculated parameters in the wellbore model and results based on sensed parameters indicate potential problem areas detrimentally affecting production.
Claims45
A method of optimizing production in a well, comprising:
- operating an artificial lift system in a wellbore;
- monitoring a plurality of production parameters at the surface;
- monitoring a plurality of downhole parameters in the wellbore;
- evaluating measured data derived from the plurality of production parameters and the plurality of downhole parameters according to an optimization model that optimizes at least one function of the measured data;
- and
- adjusting operation of the artificial lift system based on the evaluation.
A system for optimizing production in a well, comprising:
- an electric submersible pumping system positioned in a well;
- a sensor system having sensors positioned in the well and/or at the surface to sense a plurality of production related parameters;
- and
- a well modeling module operatively connected to the sensors to receive input from the sensors, wherein the well modeling module is able to contrast model values with measured data based on input from the sensors in a manner indicative of specific problem areas detrimental to optimizing production from the well.
A method of diagnosing the operation of an electric submersible pumping system, the system having a pump powered by a submersible motor, sensors for measuring production related data, and a processing system for calculating values of production related data and comparing calculated production related data and measured data, the method comprising:
- measuring production related data with the sensors;
- comparing calculated pressure, volume, and temperature values with measured pressure, volume, and temperature data;
- calculating above the pump gradient values;
- comparing calculated above the pump gradient values with measured data;
- calculating across the pump values;
- comparing calculated across the pump values with measured data;
- and
- identifying any discrepancies between calculated values and measured data.
A method of optimizing production when an electric submersible pumping system is used as an artificial lift system to produce a fluid, the system having a pump powered by a submersible motor, sensors for measuring production related data, and a processing system for calculating pressure, volume, and temperature (PVT) data according to a desired model, comparing measured PVT data against calculated PVT data, and optimizing production based on discrepancies determined between the measured PVT data and the calculated PVT data, the method comprising:
- measuring production related data;
- comparing measured (PVT) PVT data against calculated PVT data calculated according to a desired model;
- and
- optimizing production based on discrepancies determined between the measured PVT data and the calculated PVT data.
Dependencies are inferred from the claim text.