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. 15, 2008
Filed:
Dec. 21, 2005
Ann M. W. Hoefer, Houston, TX (US);
Philip F. Sullivan, Bellaire, TX (US);
Golchehreh Salamat, Sugar Land, TX (US);
Curtis L. Boney, Houston, TX (US);
Jesse C. Lee, Paris, FR;
Yiyan Chen, Richmond, TX (US);
Dean M. Willberg, Moscow, RU;
Marina Bulova, Moscow, RU;
Christopher N. Fredd, Missouri City, TX (US);
Belgin Baser, Houston, TX (US);
Timothy L. Pope, Bucharest, RO;
Ann M. W. Hoefer, Houston, TX (US);
Philip F. Sullivan, Bellaire, TX (US);
Golchehreh Salamat, Sugar Land, TX (US);
Curtis L. Boney, Houston, TX (US);
Jesse C. Lee, Paris, FR;
Yiyan Chen, Richmond, TX (US);
Dean M. Willberg, Moscow, RU;
Marina Bulova, Moscow, RU;
Christopher N. Fredd, Missouri City, TX (US);
Belgin Baser, Houston, TX (US);
Timothy L. Pope, Bucharest, RO;
Schlumberger Technology Corporation, Sugar Land, TX (US);
Abstract
Well treatment is disclosed that includes injecting a well treatment fluid with insoluble polyol polymer such as polyvinyl alcohol (PVOH) dispersed therein, depositing the insoluble polymer in the wellbore or an adjacent formation, and thereafter dissolving the polymer by reducing salinity and/or increasing temperature conditions in the environment of the polymer deposit. The method is disclosed for filter cake formation, fluid loss control, drilling, hydraulic fracturing and fiber assisted transport, where removal of the polyol at the end of treatment or after treatment is desired. The method is also disclosed for providing dissolved polyol as a delayed breaker in crosslinked polymer viscosified systems and viscoelastic surfactant systems. Also disclosed are well treatment fluids containing insoluble amorphous or at least partially crystalline polyol, and a PVOH fiber composition wherein the fibers are stabilized from dissolution by salinity.