Process and composition for scavenging hydrogen sulfide in...

Details Process and composition for scavenging hydrogen sulfide in... Process and composition for scavenging hydrogen sulfide in...

C - Chemistry, Metallurgy

09

K

31/19

C09K 8/54 (2006.01) E21B 43/22 (2006.01)

Patent

CA 1166434

PROCESS AND COMPOSITION FOR SCAVENGING HYDROGEN SULFIDE IN AQUEOUS DRILLING FLUIDS ABSTRACT OF THE DISCLOSURE An aqueous solution of 8-15 wt.% zinc chelate made by reacting an aqueous solution of zinc salt and lignosulfonate salt, which is added to a wellbore fluid contaminated with H2S provides a highly efficient H2S scavenger at about one pound of the zinc chelate solution per barrel of wellbore fluid.

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