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Inventor

GRIGAR LARRY L

US10 patents
⚠️ This page may combine multiple inventors who share the name “GRIGAR LARRY L”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

HALLIBURTON CO

6 patents
US4762067AAug 9, 1988

Downhole perforating method and apparatus using secondary explosive detonators

HALLIBURTON CO157 citations96
US4629001ADec 16, 1986

Tubing pressure operated initiator for perforating in a well borehole

HALLIBURTON CO60 citations94
US4574892AMar 11, 1986

Tubing conveyed perforating gun electrical detonator

HALLIBURTON CO109 citations94
US4678044AJul 7, 1987

Tubing pressure operated initiator for perforating in a well borehole

HALLIBURTON CO34 citations91
US4759291AJul 26, 1988

Through bulkhead explosive initiator for oil well usage

HALLIBURTON CO48 citations90
US4664184AMay 12, 1987

Balanced isolation tool enabling clean fluid in tubing perforated operations

HALLIBURTON CO16 citations73

HALLIBURTON LOGGING SERVICES

2 patents
US5211714AMay 18, 1993

Wireline supported perforating gun enabling oriented perforations

HALLIBURTON LOGGING SERVICES75 citations95
US5040619AAug 20, 1991

Wireline supported perforating gun enabling oriented perforations

HALLIBURTON LOGGING SERVICES78 citations95

GRIGAR LARRY L

1 patent
US8151882B2Apr 10, 2012

Technique and apparatus to deploy a perforating gun and sand screen in a well

GRIGAR LARRY L54 citations95

SCHLUMBERGER TECHNOLOGY CORP

1 patent
US6719061B2Apr 13, 2004

Apparatus and method for inserting and retrieving a tool string through well surface equipment

SCHLUMBERGER TECHNOLOGY CORP69 citations94