Inventor · disambiguated record
Derrel G. Gurley
Also filed as: GURLEY DERREL · GURLEY DERREL G
5 granted patents·323 citations·filing 1976–1994
85Inventor score
Technology areasE21B
Top patents by PatentIndex Score
5 records- 0191US4850430AMatched particle/liquid density well packing techniqueDOWELL SCHLUMBERGER INC·Filed 1987·Granted Jul 25, 1989·119 cites·20 claims
- 0280US5443124AHydraulic port collarCTC INTERNATIONAL·Filed 1994·Granted Aug 22, 1995·81 cites·19 claims
- 0372US5069280AGravel packer and service toolDOWELL SCHLUMBERGER INC·Filed 1990·Granted Dec 3, 1991·61 cites·29 claims
- 0472US4260020AMethod and tool for controlling fluid flow from a tubing string into a low pressure earth formationDOW CHEMICAL CO·Filed 1979·Granted Apr 7, 1981·35 cites·8 claims
- 0564US4089548AHydraulic releasing tool with plugDOW CHEMICAL CO·Filed 1976·Granted May 16, 1978·27 cites·9 claims
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