John H Moon

US Patent:

8230723, Jul 31, 2012

Filed:

Sep 19, 2008

Appl. No.:

12/234358

Inventors:

John Jeffery Moon - Tulsa OK, US
Brian Roland Ainley - Broken Arrow OK, US

Assignee:

Chandler Instruments Company, LLC - Broken Arrow OK

International Classification:

G01N 11/14

US Classification:

73 5428, 73 5431, 73 5432, 73 5433, 73 5434

Abstract:

A couette viscometer used to determine the rheological properties of Newtonian or non-Newtonian solid-laden or non-solid-laden fluids used as completion or treatment fluids in oil and/or gas wells. The instrument is capable of measuring the properties of a heated, e. g. , 600 F. /316 C. , and pressurized sample, e. g. , 30,000 psig/207 MPa, at a variety of temperatures, pressures, and shear rates. The pressure vessel is mounted in the chassis of the instrument and the vessel plug containing the viscometer components and sample may be removed as an assembly. This arrangement reduces the mass of the plug assembly, eliminating the need to transport the pressure vessel and assists in separating the sample from the pressurizing fluid. Ultimately, this arrangement improves the usability, convenience and maintenance associated with operating the instrument.

US Patent:

20080148852, Jun 26, 2008

Filed:

Dec 20, 2006

Appl. No.:

11/613816

Inventors:

Voldi E. Maki - Austin TX, US
John Jeffery Moon - Tulsa OK, US

International Classification:

G01N 29/22
G01N 29/34

US Classification:

73571, 73632

Abstract:

An acoustic transducer system for use in the measurement of longitudinal sound velocity in a cement sample that is maintained at high temperature and pressure. The acoustic assembly is separate from the end plugs to optimize acoustic coupling between the individual elements of the assembly, to increase the amplitude and consistency of the acoustic signal and to provide an ability to replace the transducers as a separate assembly. The transducer includes an acoustic transmission line and utilizes a pressure isolation method to optimize the material and the manufacturing process to enhance the acoustic signal required for the measurement. The transducer assembly includes a high temperature piezoelectric ceramic and a load mass that improve the signal amplitude and provide the required electrical connections. The transducer improves the ability to measure the longitudinal wave velocity in a cement sample at elevated temperature and pressure for determining the sample's compressive strength.