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:
Mar. 27, 2018
Filed:
Sep. 13, 2013
Welltec A/s, Allerød, DK;
Jørgen Hallundbæk, Græsted, DK;
Christian Krüger, Holte, DK;
WELLTEC A/S, Allerød, DK;
Abstract
The present invention relates to a downhole system for a well producing hydro-carbon-containing fluid. The downhole system comprises a casing comprising a first casing part and a second casing part, the second casing part having a casing thickness and comprising at least one sleeve having an inner face, and the second casing part being substantially a monobore in that the second casing part has an inner diameter which varies by less than twice the casing thickness; and a drop device for being immersed into the casing having at least one sleeve having an inner face. The drop device comprises a body having a width; a leading end; and a trailing end. The body further comprises an expandable sealing element arranged between the leading end and the trailing end, moving from a first position in which fluid is allowed to pass the device and a second position in which the sealing element abuts the inner face of the sleeve and seals off a first zone in the well from a second zone in the well. Furthermore, the invention relates to a downhole system and a stimulation method.