Application of electrochemical impedance spectroscopy for analyzing sag of drilling fluids
AssigneeHalliburton Energy Services, Inc.
InventorsXiangnan Ye, Dale E. Jamison, Li Gao
Life of this patent
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Abstract
Systems and methods for determining the composition of a drilling fluid using electro-rheology may be provided. A method for drilling a wellbore may include: circulating a drilling fluid in a wellbore; extending the wellbore into one or more subterranean formations; measuring impedance of at least a portion of the drilling fluid over time as one or more particulate additives in the drilling fluid settle; determining one or more model elements of an equivalent circuit model for modeling frequency responses of the drilling fluid from the impedance; and determining sag behavior of the drilling fluid based, at least partially, on the one or more model elements.
Claims20
A method for drilling a wellbore comprising:
- circulating a drilling fluid in a wellbore;
- extending the wellbore into one or more subterranean formations;
- measuring impedance of at least a portion of the drilling fluid over time as one or more particulate additives in the drilling fluid settle;
- determining one or more model elements of an equivalent circuit model for modeling frequency responses of the drilling fluid from the impedance;
- and
- determining sag behavior of the drilling fluid based, at least partially, on the one or more model elements.
A drilling system comprising:
- a drill string;
- a drill bit attached to a distal end of the drill string;
- a fluid monitoring and handling system comprising
- a mud pit operable to receive a drilling fluid from a wellbore;
- a mud pump operable to circulate the drilling fluid;
- and
- an electrochemical impedance spectroscopy system comprising a container for holding a sample of drilling fluid and an electrochemical impedance spectroscopy analyzer for measuring impedance of the sample;
- and
- a computer system in signal communication with the electrochemical impedance spectroscopy system, wherein the computer system comprises a processor and a non-transitory computer readable storage medium that when executed by the processor causes the computer system to determine sag behavior of the sample based, at least partially, on the impedance.
Dependencies are inferred from the claim text.