Inorganic particulate suspension having improved high shear viscosity
US-2016362575-A1 · Dec 15, 2016 · US
Modification of bentonite properties for drilling fluids
US2018355235A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2018355235-A1 |
| Application number | US-201816104742-A |
| Country | US |
| Kind code | A1 |
| Filing date | Aug 17, 2018 |
| Priority date | Apr 1, 2016 |
| Publication date | Dec 13, 2018 |
| Grant date | — |
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Abstract
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A method and composition for modifying bentonite to allow the bentonite to be useful in drilling mud applications. The method includes the steps of: preparing bentonite local to Saudi Arabia using raw water to remove contaminants from the bentonite; grinding the bentonite to a fine powder; sieving the fine powder to be between about 50 μm and about 150 μm in particle size to produce a sieved fine powder; mixing the sieved fine powder with polyanionic cellulose polymer to produce a modified bentonite composition; adding the modified bentonite composition to water until a homogeneous solution of modified bentonite in water is formed; and allowing the homogeneous solution of modified bentonite in water to rest for about 16 hours to form a composition useful in drilling mud applications.
First claim
Opening claim text (preview).
That claimed is: 1 . A modified bentonite composition useful in drilling mud applications, the composition comprising: a powdery mixture composition comprising: about 90% by weight bentonite local to Saudi Arabia, the bentonite existing as a fine powder, the fine powder to be between about 50 μm and about 150 μm in particle size, and about 10% by weight polyanionic cellulose polymer; and water. 2 . The composition according to claim 1 , wherein the powdery mixture composition comprises by weight percent about 71% sodium montmorillonite, about 5% feldspar, about 15% SiO 2 , about 6% kaolinite, about 0% halite, and about 1% illite. 3 . The composition according to claim 1 , wherein the modified bentonite composition substantially meets the API's requirements for drilling mud. 4 . The composition according to claim 1 , further comprising soda ash.
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- What does patent US2018355235A1 cover?
- A method and composition for modifying bentonite to allow the bentonite to be useful in drilling mud applications. The method includes the steps of: preparing bentonite local to Saudi Arabia using raw water to remove contaminants from the bentonite; grinding the bentonite to a fine powder; sieving the fine powder to be between about 50 μm and about 150 μm in particle size to produce a sieved fi…
- Who is the assignee on this patent?
- Saudi Arabian Oil Co
- What technology area does this patent fall under?
- Primary CPC classification C09C1/42. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Dec 13 2018 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).