Issued Patents All Time
Showing 25 most recent of 26 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9416647 | Methods and apparatus for characterization of hydrocarbon reservoirs | Youxiang Zuo, Oliver C. Mullins, Dingan Zhang, ChengGang Xian | 2016-08-16 |
| 9366776 | Integrated formation modeling systems and methods | ChengGang Xian, Oliver C. Mullins, Ricardo Vasques | 2016-06-14 |
| 8996346 | Methods for characterization of petroleum fluid and application thereof | Julian Zuo, Denise E. Freed, Andrew E. Pomerantz, Vinay K. Mishra, Oliver C. Mullins | 2015-03-31 |
| 8717549 | Methods and apparatus to detect contaminants on a fluid sensor | Peter S. Hegeman | 2014-05-06 |
| 8555696 | Methods of calibrating a fluid analyzer for use in a wellbore | Ricardo Vasques, Michael O'Keefe, Peter S. Hegeman, Oliver C. Mullins, Go Fujisawa +3 more | 2013-10-15 |
| 8528396 | Phase separation detection in downhole fluid sampling | Xu Wu, Tsutomu Yamate, Toru Terabayashi, Ricardo Vasques, Peter S. Hegeman | 2013-09-10 |
| 8256283 | Method of downhole characterization of formation fluids, measurement controller for downhole characterization of formation fluids, and apparatus for downhole characterization of formation fluids | Toru Terabayashi, Tsutomu Yamate, Hideki Kinjo, Akihito Chikenji, Takeaki Nakayama +3 more | 2012-09-04 |
| 8230916 | Apparatus and methods to analyze downhole fluids using ionized fluid samples | Ernest Newton Sumrall, Anthony Robert Holmes Goodwin, Erik Quam, Oliver C. Mullins | 2012-07-31 |
| 8039791 | Downhole fluid spectroscopy | Oliver C. Mullins, Micheal O'Keefe | 2011-10-18 |
| 8024125 | Methods and apparatus to monitor contamination levels in a formation fluid | Kai Hsu, Peter S. Hegeman, Ricardo Vasques | 2011-09-20 |
| 7996154 | Methods and apparatus for analysis of downhole asphaltene gradients and applications thereof | Youxiang Zuo, Oliver C. Mullins, Jinglin Gao, Abdel M. Kharrat, Kentaro Indo +3 more | 2011-08-09 |
| 7966273 | Predicting formation fluid property through downhole fluid analysis using artificial neural network | Peter S. Hegeman, Charles Woodburn, Graham Birkett, Nikos Varotsis, Vassilis Gaganis | 2011-06-21 |
| 7788972 | Method of downhole characterization of formation fluids, measurement controller for downhole characterization of formation fluids, and apparatus for downhole characterization of formation fluids | Toru Terabayashi, Tsutomu Yamate, Hideki Kinjo, Akihito Chikenji, Takeaki Nakayama +3 more | 2010-09-07 |
| 7711488 | Methods and apparatus to monitor contamination levels in a formation fluid | Kai Hsu, Peter S. Hegeman, Ricardo Vasques | 2010-05-04 |
| 7644611 | Downhole fluid analysis for production logging | Akira Kamiya, Gary Oddie, Stephane Vannuffelen, Tsutomu Yamate, Oliver C. Mullins +8 more | 2010-01-12 |
| 7586087 | Methods and apparatus to characterize stock-tank oil during fluid composition analysis | Peter S. Hegeman | 2009-09-08 |
| 7526953 | Methods and apparatus for the downhole characterization of formation fluids | Anthony Robert Holmes Goodwin, Pete Hegeman, Kai Hsu | 2009-05-05 |
| 7458252 | Fluid analysis method and apparatus | Darcy Freemark, Craig Borman, Ahmed Hammami, Moin Muhammed, Scott Jacobs +5 more | 2008-12-02 |
| 7458258 | Methods and apparatus for oil composition determination | ChengGang Xian, Andrew Carnegie, Oliver C. Mullins, Go Fujisawa | 2008-12-02 |
| 7305306 | System and methods of deriving fluid properties of downhole fluids and uncertainty thereof | Lalitha Venkataramanan, Go Fujisawa, Bhavani Raghuraman, Oliver C. Mullins, Andrew Carnegie +4 more | 2007-12-04 |
| 7158887 | Fluids chain-of-custody | Soraya S. Betancourt, Oliver C. Mullins, Ahmed Hammami, John Nighswander, Peter S. Hegeman +4 more | 2007-01-02 |
| 7075063 | Determining phase transition pressure of downhole retrograde condensate | Soraya S. Betancourt, Go Fujisawa, Oliver C. Mullins, James J. Dunlap | 2006-07-11 |
| 7028773 | Assessing downhole WBM-contaminated connate water | Go Fujisawa, Oliver C. Mullins, Andrew Kurkjian | 2006-04-18 |
| 7002142 | Determining dew precipitation and onset pressure in oilfield retrograde condensate | Oliver C. Mullins, Go Fujisawa, Andrew Kurkjian, John Nighswander, Toru Terabayashi +3 more | 2006-02-21 |
| 6992768 | Optical fluid analysis signal refinement | Peter S. Hegeman, Oliver C. Mullins, Kai Hsu, Andrew Kurkjian, Andrew Carnegie | 2006-01-31 |