| 9127547 |
Chemical delivery apparatus, system, and method for hydrocarbon production |
— |
2015-09-08 |
| 8962536 |
Heat generating system for enhancing oil recovery |
Gregory A. Winslow, Varadarajan Dwarakanath |
2015-02-24 |
| 8163678 |
Enhanced oil recovery surfactant formulation and method of making the same |
Curtis B. Campbell, Theresa Ann Denslow, Varadarajan Dwarakanath, Adam C. Jackson, Taimur Malik +1 more |
2012-04-24 |
| 7770641 |
Method for enhancing oil recovery with an improved oil recovery surfactant |
Varadarajan Dwarakanath, Curtis B. Campbell, Tanmay Chaturvedi, Theresa Ann Denslow, Adam C. Jackson +2 more |
2010-08-10 |
| 7021378 |
Method for enhancing the retention efficiency of treatment chemicals in subterranean formations |
— |
2006-04-04 |
| 5401425 |
Recovering enhanced oil recovery surfactants by temperature cycling |
— |
1995-03-28 |
| 5095989 |
Microemulsion method for improving the injectivity of a well |
— |
1992-03-17 |
| 5092405 |
Alkoxylated surfactant system for heavy oil reservoirs |
— |
1992-03-03 |
| 4982789 |
Method of using urea as a sacrificial agent for surfactants in enhanced oil recovery |
— |
1991-01-08 |
| 4976315 |
Use of taurine additives in enhanced oil recovery with anionic surfactants |
Chhiv K. Chea |
1990-12-11 |
| 4793419 |
Adding lignosulfonate to caustic floods to shift optimal salinity to a higher salinity |
Vernon H. Schievelbein |
1988-12-27 |
| 4559148 |
Method of extracting and reutilizing surfactants from emulsions |
Samir S. Ashrawi |
1985-12-17 |