EP 1692367 A2 20060823 - MOLDED FOAM PLUGS, PLUG SYSTEMS AND METHODS OF USING SAME
Title (en)
MOLDED FOAM PLUGS, PLUG SYSTEMS AND METHODS OF USING SAME
Title (de)
GEFORMTE SCHAUMSTOFFSTOPFEN, STOPFENSYSTEM UND VERWENDUNGSVERFAHREN DAFÜR
Title (fr)
BOUCHONS EN MOUSSE MOULEE, SYSTEMES DE BOUCHONS ET PROCEDES D'UTILISATION
Publication
Application
Priority
- GB 2004004742 W 20041110
- US 71483103 A 20031114
Abstract (en)
[origin: US2005103493A1] The present invention is directed to plugs, plug systems and methods for using the plugs and systems in subterranean wells. The plugs comprise an inner mandrel and an outer sleeve formed of a compressible foam. The plug systems include an assembly comprising a top plug and a bottom plug having foam outer sleeves. The plug systems further comprise a float valve into which the assembly fits. In the method, the bottom plug is deployed ahead of the top plug to separate a second fluid from a first fluid and wipe the inside of the pipe string clean of the first fluid. The top plug is used to wipe the inside of the pipe string clean of the second fluid and stop the displacement of the second fluid into the annulus between the casing string and the well bore.
IPC 8 full level
E21B 33/124 (2006.01); E21B 33/16 (2006.01)
CPC (source: EP US)
E21B 33/124 (2013.01 - EP US); E21B 33/16 (2013.01 - EP US)
Citation (search report)
See references of WO 2005052316A2
Designated contracting state (EPC)
DE DK FR GB IT NL
DOCDB simple family (publication)
US 2005103493 A1 20050519; AU 2004293635 A1 20050609; BR PI0416481 A 20070327; CA 2545398 A1 20050609; EP 1692367 A2 20060823; NO 20061976 L 20060607; WO 2005052316 A2 20050609; WO 2005052316 A3 20060622
DOCDB simple family (application)
US 71483103 A 20031114; AU 2004293635 A 20041110; BR PI0416481 A 20041110; CA 2545398 A 20041110; EP 04798465 A 20041110; GB 2004004742 W 20041110; NO 20061976 A 20060503