Number | Date | Country | Kind |
---|---|---|---|
90 10273 | Aug 1990 | FRX |
Number | Name | Date | Kind |
---|---|---|---|
3545215 | Burrus | Dec 1970 | |
4270611 | Arnaudeau et al. | Jun 1981 | |
4339002 | Gibbs | Jul 1982 | |
4967843 | Corteville et al. | Nov 1990 | |
4972907 | Sellars, Jr. | Nov 1990 |
Number | Date | Country |
---|---|---|
0310506 | Apr 1989 | EPX |
2333139 | Jun 1977 | FRX |
2413536 | Jul 1979 | FRX |
1594284 | Jul 1981 | GBX |
2157749 | Oct 1985 | GBX |
2182083 | May 1987 | GBX |
2191229 | Dec 1987 | GBX |
2165875 | May 1989 | GBX |
Entry |
---|
New Underwater Contols, Offshore--Jul., 1987, pp. 46-47. |
Possibility of Multiphase Production Within Three Years, Petroleum Times, May, 1987, p. 18. |