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Inventor

BUTTERFIELD JR CHARLES A

US11 patents
⚠️ This page may combine multiple inventors who share the name “BUTTERFIELD JR CHARLES A”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

HALLIBURTON ENERGY SERV INC

6 patents
US6318472B1Nov 20, 2001

Hydraulic set liner hanger setting mechanism and method

HALLIBURTON ENERGY SERV INC88 citations98
US6799638B2Oct 5, 2004

Method, apparatus and system for selective release of cementing plugs

HALLIBURTON ENERGY SERV INC148 citations97
US6011346AJan 4, 2000

Apparatus and method for generating electricity from energy in a flowing stream of fluid

HALLIBURTON ENERGY SERV INC126 citations96
US6796377B2Sep 28, 2004

Anti-rotation apparatus for limiting rotation of cementing plugs

HALLIBURTON ENERGY SERV INC19 citations92
US5967231AOct 19, 1999

Plug release indication method

HALLIBURTON ENERGY SERV INC37 citations92
US7080687B2Jul 25, 2006

Anti-rotation method and apparatus for limiting rotation of cementing plugs

HALLIBURTON ENERGY SERV INC8 citations67

FRANK S INR INC

1 patent
US6571880B1Jun 3, 2003

Method and multi-purpose apparatus for control of fluid in wellbore casing

FRANK S INR INC54 citations90

ENVENTURE GLOBAL TECHNOLOGY

1 patent
US7546881B2Jun 16, 2009

Apparatus for radially expanding and plastically deforming a tubular member

ENVENTURE GLOBAL TECHNOLOGY24 citations89

BENNETT FREDERICK C

1 patent
US8499840B2Aug 6, 2013

Downhole release joint with radially expandable member

BENNETT FREDERICK C12 citations75

SCIENT DRILLING INT INC

1 patent
US10018004B2Jul 10, 2018

Method and apparatus for casing entry

SCIENT DRILLING INT INC6 citations67

WHIDDON RICHARD M

1 patent
US8695699B2Apr 15, 2014

Downhole release joint with radially expandable member

WHIDDON RICHARD M2 citations51