Issued Patents All Time
Showing 51–75 of 103 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9102860 | Method of inhibiting or controlling release of well treatment agent | Kay E. Cawiezel | 2015-08-11 |
| 9090815 | Method of using asparaginase as a polyacrylamide enzyme breaker | — | 2015-07-28 |
| 9080097 | Well servicing fluid | Kay E. Cawiezel | 2015-07-14 |
| 9051512 | Method of treating a subterranean formation with non-spherical proppants | Phillip B. Kaufman, Allan R. Rickards, Christopher John Stephenson | 2015-06-09 |
| 9029300 | Composites for controlled release of well treatment agents | — | 2015-05-12 |
| 9010430 | Method of using shaped compressed pellets in treating a well | John Gregory Darby, Dong-Ming Shen | 2015-04-21 |
| 8726999 | Thermothickener polymer and surfactant composition and methods of employing the composition | Madhukar Chetty | 2014-05-20 |
| 8691734 | Method of fracturing with phenothiazine stabilizer | Paul S. Carman | 2014-04-08 |
| 8669213 | Method of servicing a wellbore with an aqueous gel containing a friction reducer | Justyna Ferraro, Kay E. Cawiezel | 2014-03-11 |
| 8636066 | Method of enhancing productivity of a formation with unhydrated borated galactomannan gum | Marshall G. Ault, Rupa Venugopal | 2014-01-28 |
| 8550165 | Well servicing fluid | Harpreet Singh Dinsa, Ronald Casey Plasier | 2013-10-08 |
| 8393390 | Polymer hydration method | Harold L. Becker, James Michael Brown, Rupa Venugopal | 2013-03-12 |
| 8336624 | Squeeze process for reactivation of well treatment fluids containing a water-insoluble adsorbent | Harold L. Becker | 2012-12-25 |
| 8276664 | Well treatment operations using spherical cellulosic particulates | — | 2012-10-02 |
| 8186434 | Method of stimulation using hollow, non-spherical particulates | Phillip B. Kaufman, Allan R. Rickards, Christopher John Stephenson | 2012-05-29 |
| 8183181 | Oil field treatment fluids comprising zwitterionic betaine-group-containing polymers | Madhukar Chetty, Paul S. Carman | 2012-05-22 |
| 8127849 | Method of using lightweight polyamides in hydraulic fracturing and sand control operations | — | 2012-03-06 |
| 8122957 | Sand control method using porous particulate materials | Christopher John Stephenson, Allan R. Rickards, Harold Dean Brannon | 2012-02-28 |
| 7998907 | Porous particulate materials and compositions thereof | Christopher John Stephenson, Allan R. Rickards, Harold Dean Brannon | 2011-08-16 |
| 7977283 | Method of minimizing or reducing salt deposits by use of a fluid containing a fructan and derivatives thereof | Joseph Kirk | 2011-07-12 |
| 7956012 | Oil field treatment fluids with viscosified brines | Madhukar Chetty, Paul S. Carman | 2011-06-07 |
| 7950455 | Non-spherical well treating particulates and methods of using the same | Phillip B. Kaufman, Allan R. Rickards, Christopher John Stephenson | 2011-05-31 |
| 7931087 | Method of fracturing using lightweight polyamide particulates | — | 2011-04-26 |
| 7861780 | Method of treating subterranean formations with porous particulate materials | Christopher John Stephenson, Allan R. Rickards, Harold Dean Brannon | 2011-01-04 |
| 7767630 | Method of treating a well with a gel stabilizer | Paul S. Carman | 2010-08-03 |