Number | Name | Date | Kind |
---|---|---|---|
3322196 | Bodine, Jr. | May 1967 | |
3449712 | Angeloff | Jun 1969 | |
3578081 | Bodine | May 1971 | |
3583677 | Phillips | Jun 1971 | |
3848671 | Kern | Nov 1974 | |
4437518 | Williams | Mar 1984 |
Number | Date | Country |
---|---|---|
832072 | May 1981 | SUX |
862392 | Sep 1981 | SUX |
Entry |
---|
Simkin, E. M., "Investigation of Heat Action on Hole-Bottom Zone of Wells by Deep-Hole Electric Heaters", All-Union Oil and Gas Research Institute of the Ministry of Oil Industry of the U.S.S.R., pp. 122-123, 1968. |