SCHLUMBERGER

Class [1]
Chemical Products

Chemicals for use in industry; cement additives for completing wells in the form of retarders; dispersants, fluid loss agents, gas migration preventors, weighting agents, extenders, antifoaming agents, foaming agents, salt compatibility agents and accelerators; acidizing products for stimulating fluid flow from wells in the form of primary acidizing agents, alcoholic acid, organic acids, perforating acids, clay acids, emulsified acids, gelled acids, retarded acids and foamed acids; acid additives in the form of acid corrosing inhibitors, surface tension lowering agents, mutual solvents, iron stabilizers, clay stabilizers, friction reducing agents, antisludge agents and acid diverting agents; fracturing fluids, aqueous linear polymer gels, aqueous crosslinked polymer gels, oil based gels, continuous milk gels, emulsified frac fluid, stabilised foam fracturing; fracturing additives, gelling agents, proppants, breakers, crosslinkers, fluid loss additives, demulsifiers, emulsifiers, acid gelling agents, bactericides, temperature stabilizers; all included in Class 9.