Martin Hellsten

Drag-reducing surfactants

Use of a betaine surfactant together with an anionic surfactant as a drag-reducing agent

Use of alkoxylated alkanolamide as friction-reducing agent.

Additive for preserving the fluidity of fluids containing gas hydrates

Use of alkoxylated alkanolamide together with alkoxylated alcohol as a friction-reducing agent

Alkoxylated alkanolamide together with an ionic surfactant as friction-reducing agent

Method for preventing the formation of calcium carboxylate deposits in the dewatering process for crude oil/water streams

Use of a zwitterionic surfactant together with an anionic ether-containing surfactant as a drag-reducing agent

Drag-reducing agent for use in injection water at oil recovery

Drag reduction of a heat-distributing water-based liquid contaning large amounts of anti-freeze