Downhole Local Mud Weight Measurement Near Bit
First Claim
1. A method for detecting a change in a fluid in a wellbore, comprising:
- (a) estimating a first and a second pressure difference in the fluid in the wellbore; and
(b) estimating a change in a density of the fluid using the first and the second pressure differences.
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Accused Products
Abstract
A method for detecting a change in a wellbore fluid includes estimating at least two pressure differences in the wellbore fluid and estimating a change in a density of the fluid using the at least two pressure differences. The density change may be estimated by the equation, Δρ=(ΔPbefore
30 Citations
20 Claims
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1. A method for detecting a change in a fluid in a wellbore, comprising:
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(a) estimating a first and a second pressure difference in the fluid in the wellbore; and (b) estimating a change in a density of the fluid using the first and the second pressure differences. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for detecting a change in a fluid in a wellbore, comprising:
estimating a change in a density of the fluid in the wellbore using at least four measured pressures in the fluid. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A computer-readable medium for detecting a change in a fluid in a wellbore, the medium comprising:
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instructions that enable at least one processor to; (a) estimate a first and a second pressure difference in the fluid in the wellbore; and (b) estimate a change in a density of the fluid using the first and the second pressure differences. - View Dependent Claims (18, 19, 20)
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Specification