Inventor

PENMAN ANDREW ROBERT

GB3 patents

Patents

3 patents

US6142545ANov 7, 2000

Casing pushdown and rotating tool

BJ SERVICES CO152 citations95

US7076852B2Jul 18, 2006

Conductor torquing system

BJ SERVICES CO33 citations89

US7114234B2Oct 3, 2006

Conductor torquing system

BJ SERVICES CO16 citations80