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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.:

US 9227874 B1

PDFFull Text
Date of Patent:
Jan. 05, 2016

Filed:

Jan. 23, 2012

Extrusion process for proppant production

Applicants:

Dilip K. Chatterjee, Houston, TX (US);

Shanghua Wu, Houston, TX (US);

Yuming Xie, Houston, TX (US);

Christopher E. Coker, Houston, TX (US);

Robert D. Skala, Houston, TX (US);

Inventors:

Dilip K. Chatterjee, Houston, TX (US);

Shanghua Wu, Houston, TX (US);

Yuming Xie, Houston, TX (US);

Christopher E. Coker, Houston, TX (US);

Robert D. Skala, Houston, TX (US);

Assignee:

Halliburton Energy Services, Inc., Houston, TX (US);

Attorneys:

Craig W. Roddy

Tumey LLP

Primary Examiner:

John J Figueroa

Int. Cl.
CPC ...
C09K 8/80 (2006.01); C04B 35/64 (2006.01); B29B 9/12 (2006.01); C04B 35/117 (2006.01); B28B 3/14 (2006.01); B28B 3/26 (2006.01); B28B 7/34 (2006.01); B28B 17/00 (2006.01); B82Y 30/00 (2011.01); C04B 35/622 (2006.01); C04B 35/626 (2006.01); C04B 35/628 (2006.01); C04B 35/634 (2006.01); C04B 35/636 (2006.01);
U.S. Cl.
CPC ...
C04B 35/117 (2013.01); B28B 3/14 (2013.01); B28B 3/2636 (2013.01); B28B 7/342 (2013.01); B28B 17/0018 (2013.01); B82Y 30/00 (2013.01); C04B 35/6224 (2013.01); C04B 35/62213 (2013.01); C04B 35/62231 (2013.01); C04B 35/62236 (2013.01); C04B 35/62263 (2013.01); C04B 35/62695 (2013.01); C04B 35/62802 (2013.01); C04B 35/6365 (2013.01); C04B 35/63408 (2013.01); C04B 35/63432 (2013.01); C04B 35/63464 (2013.01); C09K 8/80 (2013.01); C04B 2235/36 (2013.01); C04B 2235/528 (2013.01); C04B 2235/5276 (2013.01); C04B 2235/5284 (2013.01); C04B 2235/5427 (2013.01); C04B 2235/5436 (2013.01); C04B 2235/6021 (2013.01); C04B 2235/612 (2013.01); C04B 2235/94 (2013.01);
Abstract

An extrusion method and apparatus are described for producing ceramics, glass, glass-ceramics, or composites suitable for use as proppants. The method includes forming one or more green body materials, extruding the green body materials to form a green body extrudate, separating and shaping the green body extrudate into individual green bodies, and sintering the green bodies to form proppants. The apparatus includes a means for forming an intimate mixture of green body materials, means to produce a green body extrudate, means for separating and shaping the green body extrudate into individual green bodies, and means to sinter the green green bodies to form proppants.

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