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:
Jun. 12, 2007
Filed:
Oct. 01, 2003
James H. Holt, Jr., Conroe, TX (US);
Walter R. Chapman, Kingwood, TX (US);
James H. Kritzler, Pearland, TX (US);
Jeffrey L. Osselburn, Houston, TX (US);
Keith E. Lewis, Bangkok, TH;
James H. Holt, Jr., Conroe, TX (US);
Walter R. Chapman, Kingwood, TX (US);
James H. Kritzler, Pearland, TX (US);
Jeffrey L. Osselburn, Houston, TX (US);
Keith E. Lewis, Bangkok, TH;
Baker Hughes Incorporated, Houston, TX (US);
Abstract
Well completion cement may be pumped through a side pocket mandrel that includes parallel rows of filler sections to exclude cement from void space within the side pocket tube. The filler sections are drilled with cross-flow jet channels and surface upsets to stimulate scrubbing turbulence by well working fluid behind a cement wiper plug. The wiper plug includes leading and trailing groups of wiper discs secured to an elongated shaft. The two wiper groups are separated by a distance that permits the leading seal group to gain traction seal before the push seal on the trailing wiper group is lost. A spring centralizer spans a center section of the shaft between the two wiper groups to maintain axial alignment of the shaft as the plug traverses the length of a mandrel.