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:
May. 20, 2025
Filed:
Jun. 26, 2020
Schlumberger Technology Corporation, Sugar Land, TX (US);
Dominic Vincent Perroni, Houston, TX (US);
Anatoly Vladimirovich Medvedev, Sugar Land, TX (US);
SCHLUMBERGER TECHNOLOGY CORPORATION, Sugar Land, TX (US);
Abstract
Spacer fluids or chemical washes are prepared that comprise water, a hydraulic cement and particles of an oil-absorbent material. The particles are present in an amount sufficient to alter a property of a non-aqueous drilling fluid. The spacer fluid or chemical wash is placed in a subterranean well, whereupon the spacer fluid or chemical wash contacts residual drilling fluid on casing and formation surfaces. The oil-absorbent material in the spacer fluid or chemical wash may reduce the mobility of the drilling fluid, thereby improving zonal isolation.