Number | Name | Date | Kind |
---|---|---|---|
2034073 | Wright | Apr 1934 | |
2054255 | Howard | Sep 1936 | |
2708105 | Williams, Jr. | May 1955 | |
3055443 | Edwards | Sep 1962 | |
3075592 | Overly et al. | Jan 1963 | |
3077936 | Arutunoff | Feb 1963 | |
3100544 | Overly et al. | Aug 1963 | |
3424258 | Nakayama | Jan 1969 | |
4006788 | Garner | Feb 1977 | |
4440247 | Sartor | Apr 1984 | |
4538691 | Dennis | Sep 1985 | |
4694916 | Ford | Sep 1987 | |
5016718 | Tandberg | May 1991 |
Entry |
---|
Maurer et al., "High-Pressure Drilling", Journal of Petroleum Technology, Jul. 1973, pp. 851-859. |