Global Patent Index - EP 0875661 A1

EP 0875661 A1 1998-11-04 - Method for moving equipment in a well system

Title (en)

Method for moving equipment in a well system

Title (de)

Verfahren zum Bergen von Ausrüstung in einem Bohrlochsystem

Title (fr)

Procédé de mouvement d'un équipement dans un système de puits

Publication

EP 0875661 A1 (EN)

Application

EP 97201266 A

Priority

EP 97201266 A

Abstract (en)

A method and well system are disclosed which allow service or other equipment to be moved into, through and/or from the well system whilst production of oil and/or gas can continue during at least part of the period during which the equipment is moved or used in the well system. The well system thereto comprises a plurality of entrance points at the earth surface and a system of underground wellbores which provide a subsurface connection between said entry points so that production of oil and/or gas can continue via at least one of said entrance points whilst equipment is moved into, through and/or from the well system via another entrance point.

IPC 1-7

E21B 43/30; E21B 23/00

IPC 8 full level

E21B 23/00 (2006.01); E21B 43/30 (2006.01)

CPC

E21B 23/00 (2013.01); E21B 43/305 (2013.01)

Citation (search report)

Designated contracting state (EPC)

GB

DOCDB simple family

WO 9849424 A1 19981105; AR 012500 A1 20001018; AU 730212 B2 20010301; AU 7760798 A 19981124; CA 2285476 A1 19981105; CA 2285476 C 20061121; CN 1091833 C 20021002; CN 1252851 A 20000510; EA 000922 B1 20000626; EA 199900978 A1 20000626; EG 21404 A 20011031; EP 0875661 A1 19981104; EP 0980463 A1 20000223; ID 22927 A 19991216; NO 995247 D0 19991027; NO 995247 L 19991117; OA 11210 A 20030718