Issued Patents All Time
Showing 26–50 of 70 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8122959 | Methods and materials for zonal isolation | Christopher Alan Sawdon, Hemant K. Ladva, Gary John Tustin | 2012-02-28 |
| 8058071 | Downhole spectroscopic hydrogen sulfide detection | Li Jiang, Oliver C. Mullins, Gale Gustavson, Christopher Harrison, Bhavani Raghuraman +5 more | 2011-11-15 |
| 7987912 | Reversible polymeric gelation for oilfield applications | Kay Robinson, Maria Violante De Paz Banez, Gary John Tustin | 2011-08-02 |
| 7959864 | Downhole spectroscopic hydrogen sulfide detection | Li Jiang, Oliver C. Mullins, Gale Gustavson, Christopher Harrison, Bhavani Raghuraman +5 more | 2011-06-14 |
| 7901555 | Electro-chemical sensor | Li Jiang, Richard Guy Compton, Nathan Lawrence, Gregory George Wildgoose, Malingappagari Pandurangappa +2 more | 2011-03-08 |
| 7858563 | Wellbore treatment with hydrocarbon-responsive fluid containing oligomeric viscoelastic surfactant | Trevor Hughes, Gary John Tustin, Jian Zhou | 2010-12-28 |
| 7858562 | Powder composition | Gary John Tustin | 2010-12-28 |
| 7835003 | Optical pH sensor | Li Jiang | 2010-11-16 |
| 7767461 | Apparatus and method for measuring concentrations of scale-forming ions | Li Jiang, Andrew Meredith, Markus Pagels, Amilra Prasanna De Silva | 2010-08-03 |
| 7758734 | Methods and apparatus for the measurement of hydrogen sulphide and thiols in fluids | Li Jiang, Jonathan W. Brown, Andrew Gilbert | 2010-07-20 |
| 7670995 | Viscoelastic wellbore treatment fluid | Trevor Hughes, Gary John Tustin, Jian Zhou | 2010-03-02 |
| 7655604 | Process of hydraulic fracturing using a viscoelastic wellbore fluid | Gary John Tustin | 2010-02-02 |
| 7576043 | Viscoelastic wellbore fluid comprising an anionic surfactant | Gary John Tustin | 2009-08-18 |
| 7533723 | Well bore treatment fluid | Trevor Hughes, Loic Regnault de la Mothe, Robert Seth Hartshorne, Sarah Pelham | 2009-05-19 |
| 7410934 | Aqueous viscoelastic fluid | Trevor Hughes, Gary John Tustin, Jian Zhou | 2008-08-12 |
| 7407566 | System and method for sensing using diamond based microelectrodes | Li Jiang, Clive Edward Hall | 2008-08-05 |
| 7399731 | Electrically conductive non-aqueous wellbore fluid | Gary John Tustin | 2008-07-15 |
| 7343978 | Scale dissolver fluid | Gary John Tustin, Philip Fletcher, Jesse Lee | 2008-03-18 |
| 7339160 | Apparatus and method for analysing downhole water chemistry | Bhavani Raghuraman, Anthony Robert Holmes Goodwin, Oliver C. Mullins, Philip Rabbito, Li Jiang +2 more | 2008-03-04 |
| 7238649 | Powder composition | Gary John Tustin | 2007-07-03 |
| 7231819 | Chemical sensor for wellbore applications | Li Jiang, Andreas Manz, Ratna Tantra | 2007-06-19 |
| 7196041 | Surfactant comprising alkali metal salt of 2-methyl oleic acid or 2-ethyl oleic acid | Gary John Tustin | 2007-03-27 |
| 7156177 | Scale dissolver fluid | Gary John Tustin, Philip Fletcher, Jesse Lee | 2007-01-02 |
| 7094736 | Sampling of hydrocarbons from geological formations | Gary John Tustin | 2006-08-22 |
| 7025138 | Method and apparatus for hydrogen sulfide monitoring | Andrew Kurkjian, Dexter Myles Mootoo, Wes C. Wofford, Xu Wu, Russell D. Kane | 2006-04-11 |