Vibrating wire viscometers
First Claim
Patent Images
1. A vibrating wire viscometer housing, comprising:
- a flowline through the housing to expose a first wire to a downhole fluid;
a cavity in the housing to hold a magnet and to conduct one or more additional wires from the flowline to a signal generator;
first and second electrically conductive posts mechanically coupled to the housing to hold the first wire in tension within the flowline;
wherein the conductive posts are electrically insulated from the housing and extending from the cavity to the flowline;
an analyzer electrically coupled to the first and second electrically conductive posts via at least the cavity to determine a viscosity based on the vibration of the electrically conductive wire; and
a seal mechanically coupled to the housing to prevent access to the magnet by the downhole fluid.
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Accused Products
Abstract
Vibrating wire viscometers are described. Some example vibrating wire viscometer housings include a flowline through the housing to expose a first wire to a downhole fluid, a cavity in the housing to hold a magnet and to conduct one or more additional wires from the flowline to a signal generator, first and second electrically conductive posts mechanically coupled to the housing to hold the first wire in tension within the flowline, and a seal mechanically coupled to the housing to prevent access to the magnet by the downhole fluid.
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Citations
18 Claims
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1. A vibrating wire viscometer housing, comprising:
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a flowline through the housing to expose a first wire to a downhole fluid; a cavity in the housing to hold a magnet and to conduct one or more additional wires from the flowline to a signal generator; first and second electrically conductive posts mechanically coupled to the housing to hold the first wire in tension within the flowline;
wherein the conductive posts are electrically insulated from the housing and extending from the cavity to the flowline;an analyzer electrically coupled to the first and second electrically conductive posts via at least the cavity to determine a viscosity based on the vibration of the electrically conductive wire; and a seal mechanically coupled to the housing to prevent access to the magnet by the downhole fluid. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. The vibrating wire viscometer, comprising:
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a metallic housing comprising a cavity and a flowline fluidly decoupled from the cavity; first and second electrically conductive posts electrically insulated from the metallic housing and extending from the cavity to the flowline; an electrically conductive wire held in tension between the first and second electrically conductive posts to vibrate in response to an electrical signal; a magnet in the cavity and extending parallel to the conductive wire; an analyzer electrically coupled to the first and second electrically conductive posts via at least the cavity to determine a viscosity based on the vibration of the electrically conductive wire; and an encapsulation material to fill the cavity to fluidly decouple the cavity from the flowline and from a downhole fluid surrounding the metallic housing.
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Specification