Patent ID: 9631467
Date: 2017-04-25
CPC Classifications: C09K,E21B

Claim:
1. A squeeze treatment method for reducing the amount of hydrogen sulfide in a hydrocarbon-containing fluid, comprising: pumping a treatment fluid under pressure through a wellbore into a subterranean formation and maintaining the treatment fluid in the region around the wellbore for a predetermined period of time, wherein the treatment fluid includes a hydrogen sulfide scavenging compound that adsorbs onto the subterranean formation in a region around the wellbore; flowing production fluids from the subterranean formation into the wellbore, wherein the production fluids contact the adsorbed hydrogen sulfide scavenging compound as the production fluids flow through the region around the wellbore, wherein the production fluids contain hydrogen sulfide that reacts with the hydrogen sulfide scavenging compound to reduce an amount of hydrogen sulfide in the production fluids before the production fluids flow into the wellbore; and wherein the hydrogen sulfide scavenging compound is bis(hydroxymethyl)maleate, (2E,4E)-hydroxymethyl hexa-2,4-dienoate, (E)-hydroxymethyl but-2-3noate, (E)-bis(hydroxymethyl) O,O′(2-hydroxypropane-1,3-diyl)difumarate, hydroxymethyl 6-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)hexanoate, sorbic acid, glycerol bis hemiformal mono phosphate ether, oligomeric glycerol bis hemiformal di-phosphate ether, glycerol bis hemiformal mono sulfate ether, oligomeric glycerol bis hemiformal di-sulfate ether, (2E,2′E)-4,4′-((2-hydroxypropane-1,3-diyl)bis(oxy))bis(4-oxobut-2-enoic acid), 1,3-bis(hydroxymethoxy)propan-2-yl propionate, oxybis(1-(hydroxymethoxy)propane-3,2-diyl) dipropionate, 1,1′-((oxybis(1-(hydroxymethoxy)propane-3,2-diyl))bis(oxy))bis(propan-1-ol), or a combination thereof.