초록 ▼

Scaling of a production well in a non-carbonate subterranean reservoir is inhibited by injecting into the reservoir the water soluble surfactant metal salt containing a terminal metal ion which is adsorbed on the surfaces of the reservoir and thereafter injecting an inhibitor selected from the group

Scaling of a production well in a non-carbonate subterranean reservoir is inhibited by injecting into the reservoir the water soluble surfactant metal salt containing a terminal metal ion which is adsorbed on the surfaces of the reservoir and thereafter injecting an inhibitor selected from the group consisting of phosphonates and polymeric carboxylates. The inhibitor reacts with the metal, precipitating as the metal phosphonate or polymeric carboxylate which slowly dissolves in production water to inhibit the formation of scale.

대표청구항 ▼

A treating process for inhibiting scaling by fluid which is produced from a non-carbonate subterranean reservoir via a wellbore which comprises injecting down the wellbore and into the reservoir a water soluble surfactant metal salt containing a terminal metal ion, said surfactant characterized as b

A treating process for inhibiting scaling by fluid which is produced from a non-carbonate subterranean reservoir via a wellbore which comprises injecting down the wellbore and into the reservoir a water soluble surfactant metal salt containing a terminal metal ion, said surfactant characterized as being adsorbable on the surfaces of the reservoir, and thereafter injecting into the reservoir an aqueous solution containing a scale inhibitor selected from the group consisting of phosphonates and polymeric carboxylates which reacts with the surfactant metal salt to form a metal-inhibitor which slowly dissolves in water produced from the reservoir.