Method and Apparatus for Measurement of Formation Fluid Loss
First Claim
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1. A method for determining drilling fluid losses or gains in earth or rock drilling, comprising:
- a. providing a drilling fluid to a drilling system for a drilling operation;
b. measuring a plurality of supply parameters of the drilling fluid;
c. delivering the drilling fluid to the subsurface drilling operation, the subsurface drilling operation providing a returns drilling fluid;
d. measuring a plurality of returns parameters of the returns drilling fluid; and
e. determining a change in drilling fluid composition, or loss of or gain of drilling fluid from a comparison between the supply parameters and the returns parameters.
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Abstract
A method for determining drilling fluid losses or gains by providing a drilling fluid, measuring a plurality of supply parameters of the drilling fluid, delivering the drilling fluid to a subsurface drilling operation, the subsurface drilling operation providing a returns drilling fluid, measuring a plurality of returns parameters of the returns drilling fluid, and determining change in composition, or loss of or gain of drilling fluid from a comparison between the supply parameters and the returns parameters.
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Citations
14 Claims
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1. A method for determining drilling fluid losses or gains in earth or rock drilling, comprising:
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a. providing a drilling fluid to a drilling system for a drilling operation; b. measuring a plurality of supply parameters of the drilling fluid; c. delivering the drilling fluid to the subsurface drilling operation, the subsurface drilling operation providing a returns drilling fluid; d. measuring a plurality of returns parameters of the returns drilling fluid; and e. determining a change in drilling fluid composition, or loss of or gain of drilling fluid from a comparison between the supply parameters and the returns parameters. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for determining the efficiency of a mud pump comprising:
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a. providing a stroke, a displacement, and a speed for the mud pump to determine a theoretical flow rate; b. measuring an actual flow rate; c. comparing the actual flow rate and the theoretical flow rate. - View Dependent Claims (9)
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10. A method for modeling a borehole shape in earth or rock drilling, comprising:
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a. providing a drilling fluid to a drilling system for a subsurface drilling operation; b. measuring a plurality of supply parameters of the drilling fluid; c. delivering the drilling fluid to the subsurface drilling operation, the subsurface drilling operation providing a returns drilling fluid; d. recording the depth of the drilling operation; e. measuring a plurality of returns parameters of the returns drilling fluid; and f. correlating the supply parameters, the return parameters, and depth to determining the borehole shape. - View Dependent Claims (11, 12, 13, 14)
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Specification