Marcus A Turner

US Patent:

20130054146, Feb 28, 2013

Filed:

Aug 14, 2012

Appl. No.:

13/585562

Inventors:

John Rasmus - Richmond TX, US
William Lesso - Anderson TX, US
John James - Houston TX, US
Edward M. Tollefsen - Katy TX, US
Scott Paul - Richmond TX, US
Amanda L. Weber - Oklahoma City OK, US
Marcus Turner - Sugar Land TX, US

International Classification:

G01V 9/00
G06F 19/00

US Classification:

702 9

Abstract:

A method evaluating a cuttings density while drilling a subterranean wellbore includes acquiring first and second axially spaced pressure measurements in the wellbore. The pressure measurements may then be processed to obtain an interval density of drilling fluid between the measurement locations. A tool string including a large number of axially spaced pressure sensors (e.g., four or more or even six or more) electronically coupled with a surface processor via wired drill pipe may be used to obtain a plurality of interval densities corresponding to various wellbore intervals. The interval density may be measured while drilling and may be further processed to compute a cuttings density in the annulus. Moreover, changes in the computed interval density with time while drilling may be used as an indicator of a change in cuttings density.

US Patent:

20130048380, Feb 28, 2013

Filed:

Aug 14, 2012

Appl. No.:

13/585495

Inventors:

John Rasmus - Richmond TX, US
William Lesso - Anderson TX, US
John James - Houston TX, US
Edward M. Tollefsen - Katy TX, US
Scott Paul - Houston TX, US
Amanda L. Weber - Oklahoma City OK, US
Marcus Turner - Sugar Land TX, US
Paul Bolchover - Beijing, CN

International Classification:

E21B 47/00
E21B 47/06

US Classification:

175 40, 7315203, 16625001

Abstract:

A method for estimating one or more interval densities in a subterranean wellbore includes acquiring first and second axially spaced pressure measurements in the wellbore. The pressure measurements may then be processed to obtain an interval density of drilling fluid between the measurement locations. A tool string including a large number of axially spaced pressure sensors (e.g., four or more or even six or more) electronically coupled with a surface processor via wired drill pipe may be used to obtain a plurality of interval densities corresponding to various wellbore intervals.