Title:
APPARATUS FOR USE IN WELL ABANDONMENT
Document Type and Number:
WIPO Patent Application WO/2014/096858
Kind Code:
A3
Abstract:
A plug (1) for plugging wells, and in particular oil and gas wells, is provided. The plug (1) has a plug body formed from an outer metal tube (2) of a reduced thickness. The plug also has reinforcement means(4), attached to an inner surface of the outer tube (2), that give the plug a cross-sectional structural strength that is at least equivalent to that of a thicker metal tube. The plug has a central heater receiving void located along the axis of the plug to enable a plug deployment heater to be received therein. Also provided is a plug assembly (10) with a variable cross-sectional area in a plane perpendicular to the plane in which the assembly is deployed during the plugging of underground conduits.
Inventors:
CARRAGHER PAUL (GB)
Application Number:
PCT/GB2013/053397
Publication Date:
October 01, 2015
Filing Date:
December 20, 2013
Export Citation:
Assignee:
BISN TEC LTD (GB)
International Classes:
E21B33/136; C22C12/00; E21B17/10; E21B33/134; E21B36/00
Domestic Patent References:
| WO2011151271A1 | 2011-12-08 | |||
| WO2011073610A2 | 2011-06-23 |
Foreign References:
| US3208530A | 1965-09-28 | |||
| US20060144591A1 | 2006-07-06 | |||
| US2822876A | 1958-02-11 | |||
| US3119451A | 1964-01-28 | |||
| GB2016063A | 1979-09-19 | |||
| EP2362062A1 | 2011-08-31 | |||
| US20100126735A1 | 2010-05-27 | |||
| US6102120A | 2000-08-15 | |||
| DE2337683B1 | 1974-06-27 |
Attorney, Agent or Firm:
FORRESTERS (Pier HeadLiverpool, Merseyside L3 1AF, GB)
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