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. 19, 2007
Filed:
Sep. 25, 2002
Gilbert Lavaure, Saint Alban Auriolles, FR;
Claude Vercaemer, London, GB;
Dominique Guillot, Clamart Cedex, FR;
Marc Thiercelin, Moscow, RU;
Gilbert Lavaure, Saint Alban Auriolles, FR;
Claude Vercaemer, London, GB;
Dominique Guillot, Clamart Cedex, FR;
Marc Thiercelin, Moscow, RU;
Schlumberger Technology Corporation, Surgar Land, TX (US);
Abstract
A method for stabilising an unconsolidated zone () of a borehole, by forming a region of the borehole having enlarged diameter () in the unconsolidated zone; positioning a fluid-filled casing () in the borehole the liner having a pipe () extending therethrough into a lower portion; pumping cement from the surface inside the pipe so as to exit the liner at the lower portion and flow upwards to fill the annulus () formed between the outside of the liner and the borehole in the unconsolidated zone; withdrawing the pipe () from the casing while pumping fluid therethrough so as to maintain the liner substantially fluid-filled and to displace cement above the liner in the adjacent region; drilling through the cement and liner in the unconsolidated zone after the cement has set.