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US 11,447,687 B2Granted
Enhancing rheological properties of foam using aloe-barbadensis gel
AssigneeSaudi Arabian Oil Company
InventorsHana AlMatouq, Zuhair AlYousif, Amin Alabdulwahab
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Abstract
A surfactant foam for enhanced oil recovery (EOR) gas injection that includes a surfactant and Aloe vera gel. The surfactant may be a methanol surface active agent foamer. The surfactant foam may be generated in-situ from an injected gas (such as air or nitrogen), water (such as seawater), a surfactant, and Aloe vera gel. A process for enhancing oil recovery in a hydrocarbon reservoir using the surfactant foam and for manufacturing the foam are also provided.
Claims7
A method for enhancing oil recovery in a hydrocarbon-containing reservoir, comprising:
- introducing a gas consisting of air or nitrogen into a well accessing the hydrocarbon-containing reservoir;
- and
- introducing a solution into the well such that the solution and gas form a foam, the solution comprising:
- seawater;
- a surfactant, wherein the surfactant has a concentration in the solution of 5 gallon per thousand gallon (gpt) to 15 gpt;
- Aloe vera gel, wherein the Aloe veral gel has a concentration in the solution of 1 weight % (1 wt %) to 3 wt %, wherein when the gas consists of air the foam has an average apparent viscosity of 40 centipoise (cP) at 25° C. and when the gas consists of nitrogen the foam has an average apparent viscosity of 100 cP at 25° C., wherein gas bubbles of the foam are smaller than gas bubbles of a foam formed from a solution consisting of seawater and the surfactant.
3 more elements
Dependencies are inferred from the claim text.