METHODS AND APPARATUS FOR THE DOWNHOLE CHARACTERIZATION OF FORMATION FLUIDS
First Claim
1. A method to characterize a fluid associated with an underground geological formation, comprising:
- obtaining a sample of the fluid associated with the underground geological formation;
measuring, in a borehole associated with the underground geological formation, a chemical composition of the sample of the fluid;
measuring, in the borehole, a thermophysical property of the sample of the fluid;
selecting a mathematical model to represent the sample of the fluid based on at least one of the chemical composition or the thermophysical property;
adjusting a parameter of the mathematical model based on at least one of the chemical composition or the thermophysical property to generate an adjusted mathematical model; and
determining a property of the fluid associated with the underground geological formation based on the adjusted mathematical model.
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Accused Products
Abstract
Methods and apparatus for investigating a hydrocarbon bearing geological formation traversed by a borehole are disclosed. An example method to characterize a fluid associated with an underground geological formation obtains a sample of the fluid associated with the underground geological formation. The example method measures, in a borehole associated with the underground geological formation, a chemical composition and a thermophysical property of the sample of the fluid. The example method selects a mathematical model to represent the sample of the fluid based on at least one of the chemical composition or the thermophysical property and adjusts a parameter of the mathematical model based on at least one of the chemical composition or the thermophysical property to generate an adjusted mathematical model. The example method then determines a property of the fluid associated with the underground geological formation based on the adjusted mathematical model.
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Citations
19 Claims
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1. A method to characterize a fluid associated with an underground geological formation, comprising:
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obtaining a sample of the fluid associated with the underground geological formation;
measuring, in a borehole associated with the underground geological formation, a chemical composition of the sample of the fluid;
measuring, in the borehole, a thermophysical property of the sample of the fluid;
selecting a mathematical model to represent the sample of the fluid based on at least one of the chemical composition or the thermophysical property;
adjusting a parameter of the mathematical model based on at least one of the chemical composition or the thermophysical property to generate an adjusted mathematical model; and
determining a property of the fluid associated with the underground geological formation based on the adjusted mathematical model. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system to characterize a fluid associated with an underground geological formation, comprising:
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a device to obtain a sample of the fluid associated with the underground geological formation;
a first sensor to measure a chemical composition of the sample of the fluid;
a second sensor to measure a thermophysical property of the sample of the fluid; and
an electronics unit to select a mathematical model to represent the sample of the fluid based on at least one of the chemical composition or the thermophysical property, wherein the electronics unit is to adjust a parameter of the mathematical model based on at least one of the chemical composition or the thermophysical property to generate an adjusted mathematical model, and wherein the electronics unit is to determine a property of the fluid associated with the underground geological formation based on the adjusted mathematical model. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification