Mark Identification

COILFRAC

Serial Number

75588043

Filing Date

Nov 13, 1998

Registration Date

Dec 10, 2002

Trademark by

SCHLUMBERGER TECHNOLOGY CORPORATION

Classification Information

oil well fracturing, namely, the hydraulic fracturing of hydrocarbon well using a coiled tubing apparatus in conjunction with swab cups as isolation tools to permit fracturing of multiple producing zones

Treatment of Materials