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. 19, 2020
Filed:
Nov. 30, 2015
Schlumberger Tecnology Corporation, Sugar Land, TX (US);
Artem Valeryevich Kabannik, Novosibirsk, RU;
Schlumberger Technology Corporation, Sugar Land, TX (US);
Abstract
The present disclosure relates to the hydrocarbon production, in particular to measuring the fracture closure pressure in a formation penetrated by a wellbore using marker agents. According to this disclosure, a wellbore is provided; a clean fracturing fluid is injected into the wellbore thus creating a fracture in the formation; the fracturing fluid is injected into the well, wherein the fracturing fluid comprises a mixture of a proppant and one or more groups of capsules with the predetermined range of breaking strength values and comprising a marker agent that corresponds to each predetermined range of breaking strength values, wherein capsules of different groups comprise different marker agents and are designed to precipitate in the fracture and release the marker agent in case the fracture closure pressure exceeds the predetermined range of breaking strength values due to fracture closure; the marker agent production to the surface is provided; the marker agent is detected at the surface; and the fracture closure pressure is measured based on the detected marker agent based on the breaking strength range of the capsule in the corresponding group of capsules.