Wellbore and geologic formation desulfurization process
AssigneeKing Fahd University of Petroleum and Minerals
InventorsSagheer A. Onaizi, Mustapha Iddrisu
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Abstract
A method of removing hydrogen sulfide from a subterranean geological formation includes injecting a drilling fluid suspension in the subterranean geological formation. The drilling fluid suspension has a pH of 10 or more and includes a layered triple hydroxide material, including manganese, cobalt, and iron, in an amount of 0.01 to 0.5 precent by weight of the drilling fluid suspension. The method further includes circulating the drilling fluid suspension in the subterranean geological formation and forming a water-based mud and scavenging the hydrogen sulfide from the subterranean geological formation by reacting the hydrogen sulfide with the layered triple hydroxide material in the water-based mud.
Claims20
A method of removing hydrogen sulfide from a wellbore in a subterranean geological formation, comprising:
- injecting a drilling fluid suspension into the wellbore in the subterranean geological formation,
- wherein the drilling fluid suspension comprises bentonite, xanthan gum, starch, potassium hydroxide, and a layered triple hydroxide material comprising manganese, cobalt, and iron,
- wherein the drilling fluid suspension has a pH of 10 or more,
- wherein the layered triple hydroxide material is present in an amount of 0.01 to 0.5 percent by weight of the drilling fluid suspension,
- circulating the drilling fluid suspension in the subterranean geological formation and forming a water-based mud;
- and
- scavenging the hydrogen sulfide from the subterranean geological formation by reacting the hydrogen sulfide with the layered triple hydroxide material in the water-based mud.
Dependencies are inferred from the claim text.