Number | Name | Date | Kind |
---|---|---|---|
3299952 | Savins | Jan 1967 | |
3820602 | Motley et al. | Jun 1974 | |
3827498 | Crowe | Aug 1974 | |
3849316 | Motley et al. | Nov 1974 | |
3878895 | Wieland et al. | Apr 1975 | |
3884302 | Messenger | May 1975 |
Entry |
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Griffin, Jr., et al., "The Proper Application of Cementing Spacers and Washes can Improve Production of Oil and Gas", Proceedings of the 24th Annual Southwestern Petroleum Short Course, Texas Tech Univ., Lubbock, Texas, Apr. 21-22, 1977, pp. 19-25. |