EP 1144797 B1 20050727 - A METHOD FOR MOUNTING A CASING SHOE ON A DRILLING APPARATUS
Title (en)
A METHOD FOR MOUNTING A CASING SHOE ON A DRILLING APPARATUS
Title (de)
VERFAHREN ZUM ANBRINGEN EINES FUTTERROHRSCHUHS AN EINER BOHRVORRICHTUNG
Title (fr)
PROCEDE DE MONTAGE D'UN SABOT DE TUBAGE SUR UN APPAREIL DE FORAGE
Publication
Application
Priority
FI 9800913 W 19981123
Abstract (en)
[origin: WO0031373A1] A method for mounting a casing shoe (4) around a cylindrical drilling apparatus (2), which shoe is used by drilling and pulled into the ground on drilling, whereby shoe (4) and drilling apparatus (2) can in the installed position rotate with respect to one another and move a certain distance axially with respect to one another, when shoulder (8) in the shoe is in transverse groove (9) on the periphery of the drilling apparatus and the groove is determining the length of the axial motion. The cylindrical shoe (2) is shrunk in order to make its diameter smaller around a spot in drilling apparatus (2) smaller than the outer diameter (Du), until through shrinking the outer diameter of the shoe has become smaller than the outer diameter (Du) of the drilling apparatus.
IPC 1-7
IPC 8 full level
E21B 17/14 (2006.01)
CPC (source: EP US)
E21B 17/14 (2013.01 - EP US); Y10T 29/49908 (2015.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT SE
DOCDB simple family (publication)
WO 0031373 A1 20000602; DE 69831021 D1 20050901; DE 69831021 T2 20060420; EP 1144797 A1 20011017; EP 1144797 B1 20050727; US 2002033078 A1 20020321
DOCDB simple family (application)
FI 9800913 W 19981123; DE 69831021 T 19981123; EP 98955619 A 19981123; US 86300001 A 20010523