Electromagnetic viscosity sensor
First Claim
Patent Images
1. An apparatus for estimating a property of a downhole fluid, the apparatus comprising:
- a flexural mechanical resonator comprising (i) a first magnetic permeable element traversing a pressure-retaining wall with a portion of the first magnetic permeable element protruding into the fluid comprising a first magnetic pole face and (ii) a second magnetic permeable element traversing the pressure-retaining wall with a portion of the second magnetic permeable element protruding into the fluid comprising a second magnetic pole face, the first and second magnetic permeable pole faces being configured to magnetically interact with each other such that the portions of the first and second magnetic permeable elements protruding into the fluid oscillate in resonance with each other; and
a monitor for receiving a response of the flexural mechanical resonator to estimate the property.
1 Assignment
0 Petitions
Accused Products
Abstract
An apparatus for estimating a property of a downhole fluid includes: a flexural mechanical resonator having at least one magnetic permeable element traversing a pressure-retaining wall with a portion of the magnetic permeable element protruding into the fluid, the portion of the magnetic permeable element protruding into the fluid being configured to oscillate; and a monitor for receiving a response of the flexural mechanical resonator to estimate the property.
-
Citations
23 Claims
-
1. An apparatus for estimating a property of a downhole fluid, the apparatus comprising:
-
a flexural mechanical resonator comprising (i) a first magnetic permeable element traversing a pressure-retaining wall with a portion of the first magnetic permeable element protruding into the fluid comprising a first magnetic pole face and (ii) a second magnetic permeable element traversing the pressure-retaining wall with a portion of the second magnetic permeable element protruding into the fluid comprising a second magnetic pole face, the first and second magnetic permeable pole faces being configured to magnetically interact with each other such that the portions of the first and second magnetic permeable elements protruding into the fluid oscillate in resonance with each other; and a monitor for receiving a response of the flexural mechanical resonator to estimate the property. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. An apparatus for estimating a property of a downhole fluid, the apparatus comprising:
-
a flexural mechanical resonator comprising at least one magnetic permeable element traversing a pressure-retaining wall with a portion of the magnetic permeable element protruding into the fluid, the portion of the magnetic permeable element protruding into the fluid being configured to oscillate; and a monitor for receiving a response of the flexural mechanical resonator to estimate the property; wherein the at least one magnetic permeable element comprises a first magnetic permeable pole and a second magnetic permeable pole, the magnetic permeable poles being configured to rotationally oscillate the at least one magnetic permeable element. - View Dependent Claims (14, 15, 16, 17, 18)
-
-
19. A method for estimating a property of a downhole fluid, the method comprising:
-
disposing a flexural mechanical resonator in the downhole fluid, the flexural mechanical resonator comprising (i) a first magnetic permeable element traversing a pressure-retaining wall with a portion of the first magnetic permeable element protruding into the fluid and (ii) a second magnetic permeable element traversing the pressure-retaining wall with a portion of the second magnetic permeable element protruding into the fluid, the portions of the first and second magnetic permeable elements protruding into the fluid being configured to oscillate by magnetically interacting with each other; actuating the flexural mechanical resonator by magnetizing the first and second magnetic permeable elements using a coil magnetically coupled to the first and second magnetic permeable elements on a side of the pressure-retaining wall not exposed to the fluid causing the first and second magnetic permeable elements protruding into the fluid to oscillate; and receiving a response of the flexural mechanical resonator with a monitor to estimate the property. - View Dependent Claims (20, 21, 22)
-
-
23. An apparatus for estimating a property of a downhole fluid, the apparatus comprising:
-
a sample chamber configured to contain a sample of the downhole fluid for retrieval from downhole; a pump configured to pump the sample of the downhole fluid into the sample chamber; a flexural mechanical resonator comprising (i) a first magnetic permeable element traversing a pressure-retaining wall with a portion of the first magnetic permeable element protruding into the sample comprising a first magnetic pole face and (ii) a second magnetic permeable element traversing the pressure-retaining wall with a portions of the second magnetic permeable element protruding into the sample comprising a second magnetic pole face, the first and second magnetic permeable pole faces being configured to magnetically interact with each other such that the portions of the first and second magnetic permeable element protruding into the sample being oscillate in resonance with each other; and a monitor for receiving a response of the flexural mechanical resonator to estimate the property.
-
Specification