Use of polyhedral oligomeric silsesquioxane to increase the viscosity of well treatment fluids
US-2019225875-A1 · Jul 25, 2019 · US
Organoclay-free invert emulsion oil-based drilling fluids with polyhedral oligomeric silsesquioxane
US12435258B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12435258-B2 |
| Application number | US-202217827273-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 27, 2022 |
| Priority date | May 27, 2022 |
| Publication date | Oct 7, 2025 |
| Grant date | Oct 7, 2025 |
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Abstract
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A composition of an invert emulsion oil-based drilling fluid formulation includes an invert emulsion of an oil phase and an aqueous phase. The oil phase includes an oleaginous fluid and a liquid viscosifier that is a polyhedral oligomeric silsesquioxane (POSS). A method includes introducing an invert emulsion oil-based drilling fluid formulation including an oil phase, an aqueous phase, and a liquid viscosifier including POSS downhole through the wellbore and maintaining wellbore conditions such that the invert emulsion oil-based drilling fluid formulation provides a stable rheological property including one or more of viscosity, yield point, plastic viscosity, gel strength, and electrical stability for a period up to about 96 hours.
First claim
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What is claimed: 1. A composition of an invert emulsion oil-based drilling fluid formulation comprising: an invert emulsion of an oil phase and an aqueous phase, the oil phase including an oleaginous fluid; and a liquid viscosifier that is a polyhedral oligomeric silsesquioxane (POSS), wherein the POSS is included in the invert emulsion oil-based drilling fluid formulation in an amount ranging from 0.1 to 10 pounds per barrel. 2. The composition of claim 1 , wherein the oleaginous fluid includes a dearomatized mineral oil. 3. The composition of claim 2 , wherein the dearomatized mineral oil is Safra oil. 4. The composition of claim 1 , wherein the aqueous phase is a calcium chloride anhydride-based brine. 5. The composition of claim 1 , wherein the POSS is a glycidyl POSS. 6. The composition of claim 1 , further comprising one or more selected from the group consisting of a weighting agent, barite, a friction reducer, a filtration control agent, an emulsion activator, a primary emulsifier, and a secondary emulsifier. 7. The composition of claim 6 , wherein the primary emulsifier comprises a fatty acid and a hydrocarbon. 8. The composition of claim 6 , wherein the primary emulsifier is a basic emulsifier. 9. The composition of claim 1 , wherein the composition does not include a solid viscosifier.
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- C09K8/36Primary
Water-in-oil emulsions · CPC title
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- What does patent US12435258B2 cover?
- A composition of an invert emulsion oil-based drilling fluid formulation includes an invert emulsion of an oil phase and an aqueous phase. The oil phase includes an oleaginous fluid and a liquid viscosifier that is a polyhedral oligomeric silsesquioxane (POSS). A method includes introducing an invert emulsion oil-based drilling fluid formulation including an oil phase, an aqueous phase, and a l…
- Who is the assignee on this patent?
- Saudi Arabian Oil Co
- What technology area does this patent fall under?
- Primary CPC classification C09K8/36. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Oct 07 2025 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).