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. 16, 2020
Filed:
Sep. 11, 2017
Applicant:
Saudi Arabian Oil Company, Dhahran, SA;
Inventors:
Sergei Kozodeev, Abqaiq, SA;
Pavel Golikov, Dhahran, SA;
Assignee:
Saudi Arabian Oil Company, Dhahran, SA;
Primary Examiner:
Int. Cl.
CPC ...
E21B 33/138 (2006.01); C09K 8/40 (2006.01); C09K 8/50 (2006.01); C09K 8/42 (2006.01);
U.S. Cl.
CPC ...
E21B 33/138 (2013.01); C09K 8/40 (2013.01); C09K 8/42 (2013.01); C09K 8/50 (2013.01);
Abstract
An example method includes pumping fluid into a wellbore to fill, at least partly, a region in a lost circulation zone, with the fluid having a first density; and after pumping the fluid, pumping cement slurry into the wellbore. The cement slurry has a second density. The first density is greater than, or equal to, the second density, which causes the fluid to prevent, at least partly, the cement slurry from mixing with other fluid in the lost circulation zone for at least a period of time.