Methods and systems for monitoring drilling fluid rheological characteristics
AssigneeBaker Hughes, A Ge Company, LLC
InventorsDaniela Martins Marum, Brian Ochoa
Life of this patent
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Abstract
Systems and methods for determining fluid rheological characteristics of a fluid used in a subsurface operation are provided. The methods include measuring temperature, pressure, and at least one of a flow rate and a flow velocity of the fluid in a first fluid circuit. A model is based on the temperature, the pressures, and the flow rate or flow velocity. The fluid rheological characteristic of the fluid in a second fluid circuit is determined by measuring a temperature and flow rate and/or flow velocity in the second fluid circuit. The rheological characteristic of the fluid is calculated based on the model employing the temperature and the flow rate/flow velocity of the second fluid circuit.
Claims20
A method for determining a rheological characteristic of a fluid used in a subsurface operation, the method comprising:
- measuring a first temperature value, at least four first pressure values, and at least one of a first flow rate value and a first flow velocity value of the fluid in a first fluid circuit;
- varying a temperature of the fluid in the first fluid circuit;
- measuring a second temperature value and at least four second pressure values in the first fluid circuit;
- creating a model, using a processor, based on the first temperature value and the second temperature value, the at least four first pressure values, the at least four second pressure values, and the at least one of the first flow rate value and the first flow velocity value, wherein the model is temperature dependent;
- determining the rheological characteristic of the fluid in a second fluid circuit, the determination comprising:
- measuring a third temperature value, and at least one of a second flow rate value and a second flow velocity value of the fluid in the second fluid circuit, and
- calculating the rheological characteristic of the fluid, using the processor, based on the model employing the third temperature value and the at least one of the second flow rate value and the second flow velocity value.
A method for determining a rheological characteristic of a fluid used in a subsurface operation, the method comprising:
- measuring a first temperature value, at least four pressure values, and at least one of a first flow rate value and a first flow velocity value of the fluid in a first fluid circuit;
- creating a model, using a processor, based on the first temperature value, the at least four pressure values, and the at least one of the first flow rate value and the first flow velocity value;
- and
- determining the rheological characteristic of the fluid in a second fluid circuit, the determination comprising:
- measuring a second temperature value, and at least one of a second flow rate value and a second flow velocity value of the fluid in the second fluid circuit;
- and
- calculating the rheological characteristic of the fluid, using the processor, based on the model employing the second temperature value and the at least one of the second flow rate value and the second flow velocity value;
- wherein the first fluid circuit comprises a first fluid passage and a second fluid passage fluidly connected to the first fluid passage, the first fluid passage having a first cross-section and the second fluid passage having a second cross-section, wherein the first fluid passage comprises a first pressure sensor and a second pressure sensor, and the second fluid passage comprises a third pressure sensor and a fourth pressure sensor, wherein the first and the second pressure sensors are separated by a first separation length along the first fluid passage, and the third and the fourth pressure sensors are separated by a second separation length along the second fluid passage.
A method for determining a rheological characteristic of a fluid used in a subsurface operation, the method comprising:
- measuring a first temperature value, at least four pressure values, and at least one of a first flow rate value and a first flow velocity value of the fluid in a first fluid circuit;
- creating a model, using a processor, based on the first temperature value, the at least four pressure values, and the at least one of the first flow rate value and the first flow velocity value, wherein the model is a Herschel-Bulkley equation;
- determining the rheological characteristic of the fluid in a second fluid circuit, the determination comprising:
- measuring a second temperature value, and at least one of a second flow rate value and a second flow velocity value of the fluid in the second fluid circuit, and
- calculating the rheological characteristic of the fluid, using the processor, based on the model employing the second temperature value and the at least one of the second flow rate value and the second flow velocity value.
Dependencies are inferred from the claim text.