EP 0517968 B1 19950308 - Improvements in or relating to the formation of well bores.
Title (en)
Improvements in or relating to the formation of well bores.
Title (de)
Verbesserungen bei oder in Verbindung mit der Erstellung von Bohrlöchern.
Title (fr)
Perfectionnements à la constitution de puits ou en s'y rapportant.
Publication
Application
Priority
EP 91305193 A 19910610
Abstract (en)
[origin: EP0517968A1] A tubular element (20) for location with the bore of a wellhead housing (10). The element (20) is located in a position in the wellhead housing after a bore has been drilled below the housing. The provision of the element (20) allows a bore protector (12) to be maintained in a position to protect the sealing surface of the wellhead bore during the running of casings, casing hangers, tubings and tubing hangers. <IMAGE>
IPC 1-7
IPC 8 full level
E21B 17/10 (2006.01); E21B 33/04 (2006.01)
CPC (source: EP)
E21B 17/1007 (2013.01); E21B 33/04 (2013.01)
Designated contracting state (EPC)
DE FR GB NL
DOCDB simple family (publication)
EP 0517968 A1 19921216; EP 0517968 B1 19950308; DE 69108012 D1 19950413; DE 69108012 T2 19950706
DOCDB simple family (application)
EP 91305193 A 19910610; DE 69108012 T 19910610