Inventor

HEJL DAVID A

US7 patents

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

HALLIBURTON ENERGY SERV INC

5 patents

US6516882B2Feb 11, 2003

Apparatus and method for gravel packing an interval of a wellbore

HALLIBURTON ENERGY SERV INC62 citations95

US7243724B2Jul 17, 2007

Apparatus and method for treating an interval of a wellbore

HALLIBURTON ENERGY SERV INC40 citations92

US6814139B2Nov 9, 2004

Gravel packing apparatus having an integrated joint connection and method for use of same

HALLIBURTON ENERGY SERV INC37 citations91

US6789624B2Sep 14, 2004

Apparatus and method for gravel packing an interval of a wellbore

HALLIBURTON ENERGY SERV INC44 citations91

US7252153B2Aug 7, 2007

Bi-directional fluid loss device and method

HALLIBURTON ENERGY SERV INC25 citations85

PARAMHANS SHIVA

1 patent

US10316657B2Jun 11, 2019

Extendable probe and formation testing tool and method

PARAMHANS SHIVA0 citations36

HEJL DAVID A

1 patent

US9790789B2Oct 17, 2017

Apparatus and method for obtaining formation fluid samples

HEJL DAVID A1 citations35