Inventor
LONGFIELD COLIN
US18 patents
⚠️ This page may combine multiple inventors who share the name “LONGFIELD COLIN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SCHLUMBERGER TECHNOLOGY CORP
11 patentsUS7114562B2Oct 3, 2006
Apparatus and method for acquiring information while drilling
SCHLUMBERGER TECHNOLOGY CORP146 citations97
US7654321B2Feb 2, 2010
Formation fluid sampling apparatus and methods
SCHLUMBERGER TECHNOLOGY CORP104 citations96
US6467387B1Oct 22, 2002
Apparatus and method for propelling a data sensing apparatus into a subsurface formation
SCHLUMBERGER TECHNOLOGY CORP53 citations96
US7311142B2Dec 25, 2007
Apparatus and method for aquiring information while drilling
SCHLUMBERGER TECHNOLOGY CORP18 citations91
US7278480B2Oct 9, 2007
Apparatus and method for sensing downhole parameters
SCHLUMBERGER TECHNOLOGY CORP41 citations91
US7392851B2Jul 1, 2008
Inflatable packer assembly
SCHLUMBERGER TECHNOLOGY CORP42 citations90
US7841406B2Nov 30, 2010
Formation fluid sampling apparatus and methods
SCHLUMBERGER TECHNOLOGY CORP14 citations83
US7546885B2Jun 16, 2009
Apparatus and method for obtaining downhole samples
SCHLUMBERGER TECHNOLOGY CORP18 citations83
US7578342B2Aug 25, 2009
Inflatable packer assembly
SCHLUMBERGER TECHNOLOGY CORP14 citations82
US10246991B2Apr 2, 2019
Acoustic detection system
SCHLUMBERGER TECHNOLOGY CORP1 citations60
US9062514B2Jun 23, 2015
Downhole valve
SCHLUMBERGER TECHNOLOGY CORP0 citations34