Determining properties of wellbore fluid systems
AssigneeNorce Innovation AS
InventorEric Cayeux
Life of this patent
Estimating the term…
Abstract
Methods and an apparatuses are for determining at least one property of a wellbore fluid system. A measurement apparatus having one or more pipe sections is provided, a drilling fluid is communicated through the pipe section, at least one density which is associated with at least one condition of pressure and temperature of the drilling fluid in the pipe section is measured, and the density of the drilling fluid is measured to determine the property of the wellbore fluid system.
Claims18
-39. (canceled)
A method of determining at least one property of a wellbore fluid system, the method comprising:
- providing measurement apparatus including at least one pipe section;
- communicating a drilling fluid through the pipe section;
- measuring at least one density which is associated with at least one condition of pressure and temperature of the drilling fluid in the pipe section;
- measuring at least one speed of sound of the drilling fluid in the pipe section;
- providing or estimating at least one heat capacity of the drilling fluid;
- providing a model of density of the drilling fluid related to pressure and temperature;
- determining coefficients of the model using the measured density of the drilling fluid, the speed of sound of the drilling fluid, and the heat capacity of the drilling fluid;
- and
- using the model with determined coefficients to determine the property of the wellbore fluid system.
An apparatus for determining at least one property of a wellbore fluid system, the apparatus comprising:
- at least one pipe section for communicating drilling fluid through the pipe section,
- at least one densitometer for obtaining density data at different conditions of pressure and temperature of the drilling fluid in the pipe section,
- at least one speed of sound unit for obtaining speed of sound data at different conditions of pressure and temperature of the drilling fluid in the pipe section, and
- processing means for processing the obtained density data, and the obtained speed of sound data, and heat capacity of the drilling fluid to determine coefficients of a model of density related to pressure and temperature,
- the processing means being operable to determine the property of the wellbore fluid system based on the model with determined coefficients.
A wellbore drilling system including an apparatus, wherein the apparatus further comprises:
- at least one pipe section for communicating drilling fluid through the pipe section,
- at least one densitometer for obtaining density data at different conditions of pressure and temperature of the drilling fluid in the pipe section,
- at least one speed of sound unit for obtaining speed of sound data at different conditions of pressure and temperature of the drilling fluid in the pipe section, and
- processing means for processing the obtained density data, and the obtained speed of sound data, and heat capacity of the drilling fluid to determine coefficients of a model of density related to pressure and temperature,
- the processing means being operable to determine a property of the wellbore drilling system based on the model with determined coefficients.
Dependencies are inferred from the claim text.