Vibrating wire viscometers
First Claim
Patent Images
1. A vibrating wire viscometer, comprising:
- first and second electrically conductive tubes, wherein the first electrically conductive tube is at least partially inserted into the second electrically conductive tube, and wherein the first and second electrically conductive tubes are coupled via an electrically non-conductive bonding agent;
the first and second tubes are disposed in a housing to receive the downhole fluid via a housing flowline, wherein the tubes comprise a plurality of supporting seals coupled circumferentially to support the first and second tubes within the housing flowline, and wherein the first and second tubes are immersed in an electrically insulating fluid disposed between the supporting seals, the first and second tubes, and the housing;
first and second electrically conductive pins inserted into respective ones of the first and second tubes; and
an electrically conductive wire fastened to the first and second pins to vibrate in a downhole fluid to determine a viscosity of the downhole fluid.
1 Assignment
0 Petitions
Accused Products
Abstract
Vibrating wire viscometers are disclosed. An example vibrating wire viscometer includes first and second electrically conductive tubes, where the first tube is at least partially inserted into the second tube, and where the first and second tubes are coupled via an electrically insulating bonding agent. The example viscometer further includes first and second electrically conductive pins inserted into respective ones of the first and second tubes, and an electrically conductive wire fastened to the first and second pins to vibrate in a downhole fluid to determine a viscosity of the downhole fluid.
13 Citations
20 Claims
-
1. A vibrating wire viscometer, comprising:
-
first and second electrically conductive tubes, wherein the first electrically conductive tube is at least partially inserted into the second electrically conductive tube, and wherein the first and second electrically conductive tubes are coupled via an electrically non-conductive bonding agent; the first and second tubes are disposed in a housing to receive the downhole fluid via a housing flowline, wherein the tubes comprise a plurality of supporting seals coupled circumferentially to support the first and second tubes within the housing flowline, and wherein the first and second tubes are immersed in an electrically insulating fluid disposed between the supporting seals, the first and second tubes, and the housing; first and second electrically conductive pins inserted into respective ones of the first and second tubes; and an electrically conductive wire fastened to the first and second pins to vibrate in a downhole fluid to determine a viscosity of the downhole fluid. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
-
-
16. A vibrating wire viscometer, comprising:
-
first and second electrically conductive tubes disposed in a housing, wherein the first tube is at least partially inserted into the second tube, and wherein the first and second tubes are coupled via an electrically insulating bonding agent; the first and second tubes comprise a plurality of supporting seals coupled circumferentially to support the first and second tubes within the housing flowline, wherein the first and second tubes are immersed in an electrically insulating fluid disposed between the supporting seals, the first and second tubes, and the housing; first and second electrically conductive pins inserted in parallel into respective ones of the first and second tubes; an electrically conductive wire held in tension between the first and second pins to vibrate in a downhole fluid in the first and second tubes;
a magnet to generate a magnetic field adjacent the wire;a signal processor to generate an electrical signal to cause the wire to vibrate at a resonance frequency in the magnetic field; and an analyzer to measure a reverse voltage of the wire to determine a viscosity of the downhole fluid. - View Dependent Claims (17, 18, 19)
-
-
20. A vibrating wire viscometer, comprising:
-
first and second electrically conductive tubes, wherein the first tube is at least partially inserted into the second tube, and wherein the first and second tubes are coupled via an electrically insulating bonding agent; first and second electrically conductive pins inserted into respective ones of the first and second tubes; an electrically conductive wire held in tension between the first and second pins to vibrate in a downhole fluid in the first and second tubes; and a housing comprising; a flowline, wherein the first and second tubes are disposed in the flowline; the first and second tubes comprise a plurality of supporting seals coupled circumferentially to support the first and second tubes within the housing flowline, wherein the first and second tubes are immersed in an electrically insulating fluid disposed between the supporting seals, the first and second tubes, and the housing; a magnet disposed in the housing to generate a magnetic field adjacent the wire; a signal processor to generate an electrical signal to vibrate the wire in the magnetic field at a resonance frequency; and an analyzer to measure a reverse voltage on the wire to determine a viscosity of the downhole fluid.
-
Specification