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:
Jan. 11, 2005
Filed:
Jul. 05, 2001
Nagesh S. Kommareddi, Tulsa, OK (US);
Ryan Dinius, Broken Arrow, OK (US);
Niraj Vasishtha, San Antonio, TX (US);
Darren Eugene Barlow, San Antonio, TX (US);
Nagesh S. Kommareddi, Tulsa, OK (US);
Ryan Dinius, Broken Arrow, OK (US);
Niraj Vasishtha, San Antonio, TX (US);
Darren Eugene Barlow, San Antonio, TX (US);
Baker Hughes Incorporated, Houston, TX (US);
Abstract
High concentration drag reducing agents may be prepared by microencapsulating and/or macroencapsulating polymer drag reducing agent. The encapsulation may be performed prior to, during, or after the polymerization of monomer into effective drag reducing polymer. If encapsulation is done before or during polymerization, a catalyst may be present, but little or no solvent is required. The result is very small scale bulk polymerization within the capsule. The inert capsule or shell may be removed before, during or after introduction of the encapsulated drag reducer into a flowing liquid. No injection probes or other special equipment is expected to be required to introduce the drag reducing slurry into the liquid stream, nor is grinding (cryogenic or otherwise) of the polymer necessary to form a suitable drag reducing agent.