Real time flow rate meter
AssigneeHalliburton Energy Services, Inc.
InventorsDale E. Jamison, Xiangnan Ye
Life of this patent
Estimating the term…
Abstract
A system and method for calibrating discharge coefficients using either an orifice plate flow rate meter or a venturi flow rate meter in a well operation is provided. Using differential pressures obtained from the flow rate meter along with real time calibration of the discharge coefficient with density and rheology data, the flow rate meter can be used in a much more analytical manner. In this way, real time detection of influx or cuttings can be determined in real time, along with estimated concentrations.
Claims20
A method for calibrating a discharge coefficient for well operations, comprising:
- receiving a differential pressure indication of a rate of fluid flow in a flow line of a well operation;
- determining viscosity and density data of the fluid flow;
- determining a discharge coefficient using the differential pressure indication and the viscosity and density data;
- comparing the determined discharge coefficient to a prior determined discharge coefficient of the fluid flow;
- and
- ascertaining the presence of one of:
- cuttings in the fluid flow and influx in the fluid flow based on the comparing step.
A method of calibrating a discharge coefficient for well operations, comprising:
- calibrating in real time, a discharge coefficient using a pressure indication from an orifice flow meter assembly monitoring return drilling fluid flow from a wellbore, and using viscosity and density data of the return drilling fluid flow;
- comparing the determined discharge coefficient to a prior determined discharge coefficient of the return drilling fluid flow;
- and
- detecting one of:
- cuttings and influx in the return drilling fluid flow based on the comparing step.
A system for calibrating a discharge coefficient for well operations, comprising:
- a flow rate meter that provides a pressure indication of return drilling fluid flow;
- a device to determine a discharge coefficient using the pressure indication and viscosity and density data determined by density and rheology of the return drilling fluid flow;
- and
- a device to identify cuttings or influx in the return drilling fluid flow based on the determined discharge coefficient and a prior determined discharge coefficient.
Dependencies are inferred from the claim text.