Issued Patents All Time
Showing 201–223 of 223 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8527249 | System and method for optimizing drilling speed | Kevin P. Paylow, Robert L. Williams | 2013-09-03 |
| 8517103 | Oil or gas treatment fluid containing a chelate or coordination complex that sets | Donald L. Whitfill, Matthew L. Miller, Kay A. Morris | 2013-08-27 |
| 8476201 | Drilling fluids having reduced sag potential and related methods | Jeffrey J. Miller, Nicholas Charles Braley, Donald R. Siems, Patrick Baker | 2013-07-02 |
| 8387442 | Methods to characterize sag in fluids | Robert J. Murphy | 2013-03-05 |
| 8202824 | Variable density treatment fluids | B. Raghava Reddy, Krishna M. Ravi, Michael J. Szymanski, Donald L. Whitfill | 2012-06-19 |
| 8151633 | Methods and systems for characterizing LCM particle plugging and rheology in real time | Robert J. Murphy, J.G. Savins | 2012-04-10 |
| 8091726 | Pressure vessels with safety closures and associated methods and systems | Richard S. Bradshaw, Robert J. Murphy | 2012-01-10 |
| 7721612 | Real-time filtration apparatus and associated methods | — | 2010-05-25 |
| 7701229 | Methods and systems for measurement of fluid electrical stability | Robert J. Murphy | 2010-04-20 |
| 7547663 | Invert drilling fluids and methods of drilling boreholes | Jeff Kirsner, Don Siems, Kimberly Burrows-Lawson, David Carbajal, Ian D. Robb | 2009-06-16 |
| 7534743 | Invert drilling fluids and methods of drilling boreholes | Jeff Kirsner, Don Siems, Kimberly Burrows-Lawson, David Carbajal, Ian D. Robb | 2009-05-19 |
| 7488704 | Invert drilling fluids for use in drilling in subterranean formations | Jeff Kirsner, Don Siems, Kimberly Burrows-Lawson, David Carbajal, Ian D. Robb | 2009-02-10 |
| 7462580 | Flat rheology drilling fluids | Jeff Kirsner, Don Siems, Kimberly Burrows-Lawson, David Carbajal, Ian D. Robb | 2008-12-09 |
| 7456135 | Methods of drilling using flat rheology drilling fluids | Jeff Kirsner, Don Siems, Kimberly Burrows-Lawson, David Carbajal, Ian D. Robb | 2008-11-25 |
| 7108066 | Variable density treatment fluids and methods of using such fluids in subterranean formations | — | 2006-09-19 |
| 6906535 | Method for characterizing water-in-oil emulsions using electrical wave forms | Robert J. Murphy | 2005-06-14 |
| 6604852 | High pressure brine crystallization point apparatus | Robert J. Murphy | 2003-08-12 |
| 6584833 | Apparatus and method for analyzing well fluid sag | Robert J. Murphy | 2003-07-01 |
| 6543276 | Oil well bore hole filter cake breaker fluid test apparatus and method | Robert J. Murphy, Brad Todd | 2003-04-08 |
| 5086646 | Apparatus and method for analyzing well fluid sag | William Clements | 1992-02-11 |
| 4900159 | High shear mixing apparatus | — | 1990-02-13 |
| 4748849 | Apparatus for dynamically measuring fluid loss characteristics | James V. Fisk, Jr. | 1988-06-07 |
| 4606891 | Electrode holder useful in a corrosion testing device | Robert J. Murphy | 1986-08-19 |