DOWNHOLE DEVICE AND DOWNHOLE SYSTEM
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Applicant
Welltec A/S
Representative
Hoffmann Dragsted A/S
Application number
EP16155044A1
Kind
A1
Document number
3205812
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DOWNHOLE DEVICE AND DOWNHOLE SYSTEM

3205812 - EP16155044A1 - EPO

Application Feb 10, 2016 - Publication Aug 16, 2017

Satish KUMAR

Abstract

The present invention relates to a downhole device (1) for being moved downwards in a well (2) by fluid to assist stimulation of a production zone (101) of the well, the well comprising a well tubular structure (3) having a first opening (4) and a first movable sleeve (5) arranged opposite the first opening, and the well tubular structure having an inner diameter (ID), the downhole device having an axial extension (6), and comprising: a first part (7) comprising two projection elements (8) having a profile (9) matching grooves (10) in the sleeve, and a second part (11) comprising: a body (12), two anchor elements (14) projectable from the body for anchoring the second part in the well tubular structure, and a sealing element (15) configured to seal against the well tubular structure, the downhole device further comprising: a displacement mechanism (16) comprising a piston (17) movable within a piston cylinder (18) to displace, in the axial extension, the first part in relation to the second part when anchored in the well tubular structure to operate the sleeve. The invention also relates to a downhole system for stimulating a formation surrounding a well tubular structure of a well. Finally, the present invention relates to a stimulation method for stimulating a formation by means of a downhole system according to the invention.

Description

Claims

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