Assignee
DIAMOND OIL WELL DRILLING
US·7 granted patents·331 citations·filing 1980–1987
Technology mixE21B7
Top patents by PatentIndex Score
7 records- 0189US4598777AMethod and apparatus for preventing contamination of a coring spongeDIAMOND OIL WELL DRILLING·Filed 1984·Granted Jul 8, 1986·86 cites·14 claims
- 0280US4638872ACore monitoring deviceDIAMOND OIL WELL DRILLING·Filed 1985·Granted Jan 27, 1987·53 cites·18 claims
- 0378US4735269ACore monitoring device with pressurized inner barrelDIAMOND OIL WELL DRILLING·Filed 1987·Granted Apr 5, 1988·50 cites·12 claims
- 0477US4479557AMethod and apparatus for reducing field filter cake on sponge coresDIAMOND OIL WELL DRILLING·Filed 1983·Granted Oct 30, 1984·47 cites·34 claims
- 0575US4312414AMethod and apparatus for obtaining saturation data from subterranean formationsDIAMOND OIL WELL DRILLING·Filed 1980·Granted Jan 26, 1982·44 cites·36 claims
- 0660US4631677AMethod for determining the placement of perforations in a well casingDIAMOND OIL WELL DRILLING·Filed 1984·Granted Dec 23, 1986·26 cites·13 claims
- 0759US4502553ASponge coring apparatus with reinforced spongeDIAMOND OIL WELL DRILLING·Filed 1983·Granted Mar 5, 1985·25 cites·15 claims
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