Number | Name | Date | Kind |
---|---|---|---|
2970645 | Glass | Feb 1961 | |
3289762 | Schell et al. | Dec 1966 | |
3712379 | Hill | Jan 1973 | |
4424859 | Sims et al. | Jan 1984 | |
4867241 | Strubhar | Sep 1989 | |
4945991 | Jones | Aug 1990 |
Entry |
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Hassebroek et al., "Hydraulic Fracturing", Modern Well Completion Series, Part 13, Petroleum Engineer, Jul. 1961, 6 pages. |