Title:
DEGRADABLE DOWNHOLE PLUG
Document Type and Number:
WIPO Patent Application WO/2019/146359
Kind Code:
A1
Abstract:
Provided is a downhole plug for well drilling, wherein the downhole plug can restore a flow path in a short time by quickly degrading after hydraulic fracturing. A downhole plug (10) includes a mandrel (1) made of a degradable material and a plurality of peripheral members (2, 3, 4, 5, 6a, 6b, 8a, 8b) made of a degradable material and provided on the outer circumferential face of the mandrel (1). At least one of the plurality of peripheral members (6a, 6b) has a hollow portion (64) through which a fluid flowing in the axial direction of the mandrel (1) can flow or has a groove on at least a portion of the face that is the exterior face of the downhole plug (10) or the face in contact with the mandrel (1).
More Like This:
WO/2019/007589 | WELL TOOL ASSEMBLY |
WO/2002/002906 | DRILLABLE BRIDGE PLUG |
WO/2006/119037 | EXPANDABLE PACKER WITH MOUNTED EXTERIOR SLIPS AND SEAL |
Inventors:
TAKAHASHI SHINYA (JP)
SHITSUKAWA AKI (JP)
SHITSUKAWA AKI (JP)
Application Number:
PCT/JP2018/047889
Publication Date:
August 01, 2019
Filing Date:
December 26, 2018
Export Citation:
Assignee:
KUREHA CORP (JP)
International Classes:
E21B33/129
Domestic Patent References:
WO2017110610A1 | 2017-06-29 |
Foreign References:
US20170234103A1 | 2017-08-17 | |||
US20130327545A1 | 2013-12-12 |
Attorney, Agent or Firm:
HARAKENZO WORLD PATENT & TRADEMARK (JP)
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