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:
Jul. 24, 2007
Filed:
Sep. 12, 2002
Houman M. Shammai, Houston, TX (US);
John M. Michaels, Cypress, TX (US);
James T. Cernooek, Missouri City, TX (US);
Michael J. Moody, Katy, TX (US);
Phillip Wills, Aberdeenshire, GB;
Houman M. Shammai, Houston, TX (US);
John M. Michaels, Cypress, TX (US);
James T. Cernooek, Missouri City, TX (US);
Michael J. Moody, Katy, TX (US);
Phillip Wills, Aberdeenshire, GB;
Baker Hughes Incorporated, Houston, TX (US);
Abstract
A method and apparatus for maintaining the single phase integrity of a deep well formation sample that is removed to the surface comprises a vacuum jacket insulated single working cylinder divided by two free pistons into three variable volume chambers. The intermediate chamber is pre-charged with a fixed quantity of high pressure gas. Wellbore fluid freely admitted to one end chamber bears against one free piston to further compress the gas. The formation sample is pumped into the other end chamber to first, displace the wellbore fluid from the first end chamber and, sequentially, to further compress the gas to preserve the sample phase state upon removal to the surface.