Inventor
SHAPPERT NEIL D
US2 patents
Patents
2 patentsUS6401821B1Jun 11, 2002
Method and apparatus involving an integrated or otherwise combined exit guide and section mill for sidetracking or directional drilling from existing wellbores
RE ENTRY TECHNOLOGIES INC22 citations87
US7077206B2Jul 18, 2006
Method and apparatus involving an integrated or otherwise combined exit guide and section mill for sidetracking or directional drilling from existing wellbores
RE ENTRY TECHNOLOGIES INC8 citations68