Inventor

PURKIS DANIEL G

GB9 patents

⚠️ This page may combine multiple inventors who share the name “PURKIS DANIEL G”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

WELLDYNAMICS INC

4 patents

US6575237B2Jun 10, 2003

Hydraulic well control system

WELLDYNAMICS INC113 citations97

US6585051B2Jul 1, 2003

Hydraulically operated fluid metering apparatus for use in a subterranean well, and associated methods

WELLDYNAMICS INC93 citations96

US7145471B2Dec 5, 2006

Sequential hydraulic control system for use in a subterranean well

WELLDYNAMICS INC31 citations92

US7013980B2Mar 21, 2006

Hydraulically actuated control system for use in a subterranean well

WELLDYNAMICS INC39 citations92

HALLIBURTON ENERGY SERV INC

2 patents

US6567013B1May 20, 2003

Digital hydraulic well control system

HALLIBURTON ENERGY SERV INC68 citations95

US6595292B2Jul 22, 2003

Method and apparatus for use with two or more hydraulic conduits deployed downhole

HALLIBURTON ENERGY SERV INC1 citations51

SNIDER PHILIP M

1 patent

US9194227B2Nov 24, 2015

Systems, assemblies and processes for controlling tools in a wellbore

SNIDER PHILIP M5 citations72

MCNAMEE STEPHEN

1 patent

US9945211B2Apr 17, 2018

Leak-off assembly for gravel pack system

MCNAMEE STEPHEN2 citations68

WEATHERFORD TECH HOLDINGS LLC

1 patent

US10107071B2Oct 23, 2018

Systems, assemblies and processes for controlling tools in a well bore

WEATHERFORD TECH HOLDINGS LLC0 citations51