Number | Name | Date | Kind |
---|---|---|---|
2708103 | Williams, Jr. | May 1955 | |
3127943 | Mori | Apr 1964 | |
3241624 | Rassieur | Mar 1966 | |
3481412 | Rowley | Dec 1969 | |
3548958 | Blackwell et al. | Dec 1970 | |
3951219 | Cortes | Apr 1976 | |
4466497 | Soinski et al. | Aug 1984 | |
4773489 | Makohl | Sep 1988 | |
4815342 | Brett et al. | Mar 1989 | |
4955438 | Juergens et al. | Sep 1990 | |
4981183 | Tibbitts | Jan 1991 | |
4982802 | Warren et al. | Jan 1991 | |
5009273 | Grabinski | Apr 1991 | |
5010789 | Brett et al. | Apr 1991 | |
5020612 | Williams | Jun 1991 | |
5029653 | Jurgens et al. | Jul 1991 | |
5038873 | Jurgens | Aug 1991 | |
5042596 | Brett et al. | Aug 1991 | |
5090492 | Keith | Feb 1992 | |
5099934 | Barr | Mar 1992 | |
5103921 | Zeer et al. | Apr 1992 | |
5109935 | Hawke | May 1992 | |
5111892 | Sinor et al. | May 1992 | |
5119892 | Clegg et al. | Jun 1992 | |
5131478 | Brett et al. | Jul 1992 | |
5165494 | Barr | Nov 1992 | |
5178222 | Jones et al. | Jan 1993 | |
5253720 | Radford et al. | Oct 1993 | |
5322135 | Travis | Jun 1994 | |
5339915 | Laporte et al. | Aug 1994 | |
5351765 | Ormsby | Oct 1994 |
Entry |
---|
Sinor, L. A., et al. "Development of an Anti-Whirl Core Bit" Society of Petroleum Engineers, pp. 413-425, 1992. |
Eastman Christensen Catalog, "Slimhole Coring", undated. |