Issued Patents All Time
Showing 26–50 of 57 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8397816 | System, method and apparatus for enhancing wellbore treatment fluid flexibility | Hemant K. Ladva, Lijun Lin, Yiyan Chen | 2013-03-19 |
| 8361935 | Metal free crosslinking of galactomannan | Mathew M. Samuel, Kevin W. England | 2013-01-29 |
| 8322410 | System, method and apparatus for enhancing wellbore treatment fluid flexibility | Hemant K. Ladva, Lijun Lin, Yiyan Chen | 2012-12-04 |
| 8291978 | Methods of limiting leak off and damage in hydraulic fractures | Richard D. Hutchins, Marie Noelle Dessinges, Erik Nelson | 2012-10-23 |
| 8230731 | System and method for determining incursion of water in a well | Stephen Dyer, Bruno Drochon | 2012-07-31 |
| 8230919 | Well thermal insulation for formation sampling of viscous fluids and methods of use thereof | Anthony R. H. Goodwin, Amy Simpson | 2012-07-31 |
| 8204724 | Predicting behavior of a tool using a model of a rheological characteristic of a fluid | Moises Enrique Smart | 2012-06-19 |
| 8163826 | Polymeric acid precursor compositions and methods | Dean M. Willberg, Marina Bulova, Dzanis Menshikau | 2012-04-24 |
| 8141640 | System, method and apparatus for enhancing wellbore treatment fluid flexibility | Hemant K. Ladva, Lijun Lin, Yiyan Chen | 2012-03-27 |
| 8066073 | Methods of limiting leak off and damage in hydraulic fractures | Richard D. Hutchins, Marie Noelle Dessinges, Erik Nelson | 2011-11-29 |
| 8067342 | Internal breakers for viscoelastic surfactant fluids | Lijun Lin, Leiming Li | 2011-11-29 |
| 8030254 | System, method, and apparatus for utilizing divalent brines in viscosified well treatment fluids | Alhad Phatak, Yenny Christanti, Balkrishna Gadiyar | 2011-10-04 |
| 8003577 | Method of treating subterranean formation with crosslinked polymer fluid | Leiming Li, Paul R. Howard, Michael D. Parris, Lijun Lin, Andrey Mirakyan +2 more | 2011-08-23 |
| 7998909 | Foaming agent for subterranean formations treatment, and methods of use thereof | Lijun Lin, Bruno Drochon, Gregory Kubala, Laura Schafer, Alejandro Pena +1 more | 2011-08-16 |
| 7956016 | Methods to control fluid loss in a well bore | Mohan K.R. Panga, Isabelle Couillet | 2011-06-07 |
| 7878248 | System, method, and apparatus for post-fracture treatment | Kevin W. England | 2011-02-01 |
| 7879770 | Oxidative internal breaker for viscoelastic surfactant fluids | Lijun Lin, Yiyan Chen, Philip F. Sullivan, Belgin Baser, Jesse Lee | 2011-02-01 |
| 7858561 | Degradable polymers for wellbore fluids and processes | Kay Robinson, Trevor Hughes | 2010-12-28 |
| 7857051 | Internal breaker for oilfield treatments | Jesse Lee, Philip F. Sullivan, Erik Nelson, Yiyan Chen, Belgin Baser +1 more | 2010-12-28 |
| 7832476 | Downhole release of friction reducers in gravel packing operations | Laura Schafer | 2010-11-16 |
| 7786050 | Well treatment with ionic polymer gels | Michael D. Parris, Andrey Mirakyan, Yiyan Chen | 2010-08-31 |
| 7775282 | Methods of limiting leak off and damage in hydraulic fractures | Richard D. Hutchins, Marie Noelle Dessinges, Erik Nelson | 2010-08-17 |
| 7741252 | Surfactants not toxic to bacteria | Yiyan Chen, Richard Marcinew | 2010-06-22 |
| 7678745 | Viscosity reduction | Michael D. Parris, Andrey Mirakyan, Yiyan Chen | 2010-03-16 |
| 7677311 | Internal breaker for oilfield treatments | Jesse Lee, Philip F. Sullivan, Erik Nelson, Yiyan Chen, Belgin Baser +1 more | 2010-03-16 |