Inventor

MATTHEWS PATRICIA C

US3 patents

Patents

3 patents

US4464269AAug 7, 1984

Additive composition for release of stuck drill pipe

EXXON RESEARCH ENGINEERING CO47 citations90

US4427564AJan 24, 1984

Additive composition for release of stuck drill pipe

EXXON RESEARCH ENGINEERING CO23 citations81

US4436638AMar 13, 1984

Additive composition for release of stuck drill pipe

EXXON RESEARCH ENGINEERING CO23 citations80