75647441
Feb 24, 1999
Jul 13, 2004
SCHLUMBERGER TECHNOLOGY CORPORATION
Active Trademark
chemicals for use in oil and gas production for the purpose of removing spent, de-watered drilling fluid(i.e., drilling cake) from a wellbore
Chemicalsrepair and maintenance of subterranean wellbore surfaces used in the production of oil and gas, namely, the removal of spent, de-watered drilling fluid(i.e., drilling cake) adhered to the walls of the wellbore
Building Construction and Repair