The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 04, 2003
Filed:
Sep. 12, 2000
Richard L. Clampitt, Bartlesville, OK (US);
Billy L. Swanson, Bartlesville, OK (US);
R. L. Clampitt & Associates, Inc., Bartlesville, OK (US);
Abstract
Sulfonated uintaite is prepared by sulfonating a naturally occurring uintaite charge with a sulfonating agent such as sulfur trioxide, fuming sulfuric acid, chlorosulfonic acid, oleum, or concentrated sulfuric acid to produce sulfonic acids of uintaite. The resulting sulfonic acids are neutralized with a caustic neutralizing agent and sulfonated uintaite is the product. The sulfonated uintaite product is dried and packaged. The produced sulfonated uintaite is useful in oil and gas well working fluids (drilling muds). Neutralization of the resulting sulfonic acids with sodium hydroxide or ammonium hydroxide as the caustic neutralizing agent yields water and oil-soluble or dispersible salts of the sulfonated uintaite. Neutralization with Ca(OH) (calcium hydroxide) as the caustic neutralizing agent yields a product which is preferable in oil-based muds.