Title:
STEERABLE SOIL PENETRATION SYSTEM
Document Type and Number:
WIPO Patent Application WO2003076760
Kind Code:
A9
Abstract:
A steerable soil penetration system comprises a steerable penetration head (1), which compacts and does not cut away the surrounding soil and which is connected to an elongate flexible tubing (2) such that the orientation of the penetration head can be varied relative to the tubing. The elongate tubing and/or a downhole hammer or tractor pushes the penetration head through the subsurface formation. Preferably the tubing is surrounded by a narrow annulus so that buckling of the tubing is inhibited and the tubing protects the pierced hole against caving in optionally the tubing is circumferentially expanded after completion of the piercing process thereby increasing the width of the pierced hole and providing a permanent hole lining.
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Inventors:
BETTS MICHAEL JOHN (NL)
OOENEN JOSEF GUILLAUME CHRISTO (NL)
KAPTEIJN PIETER KAREL ANTON (NL)
OOSTERLING PETER (NL)
SCHILTE PAUL DIRK (NL)
VAN DER SMAN PLEUN MARINUS (NL)
VAN WECHEM GUSTAAF LOUIS (NL)
OOENEN JOSEF GUILLAUME CHRISTO (NL)
KAPTEIJN PIETER KAREL ANTON (NL)
OOSTERLING PETER (NL)
SCHILTE PAUL DIRK (NL)
VAN DER SMAN PLEUN MARINUS (NL)
VAN WECHEM GUSTAAF LOUIS (NL)
Application Number:
PCT/EP2003/001744
Publication Date:
October 28, 2004
Filing Date:
March 07, 2003
Export Citation:
Assignee:
SHELL INT RESEARCH (NL)
SHELL CANADA LTD (CA)
BETTS MICHAEL JOHN (NL)
OOENEN JOSEF GUILLAUME CHRISTO (NL)
KAPTEIJN PIETER KAREL ANTON (NL)
OOSTERLING PETER (NL)
SCHILTE PAUL DIRK (NL)
VAN DER SMAN PLEUN MARINUS (NL)
VAN WECHEM GUSTAAF LOUIS (NL)
SHELL CANADA LTD (CA)
BETTS MICHAEL JOHN (NL)
OOENEN JOSEF GUILLAUME CHRISTO (NL)
KAPTEIJN PIETER KAREL ANTON (NL)
OOSTERLING PETER (NL)
SCHILTE PAUL DIRK (NL)
VAN DER SMAN PLEUN MARINUS (NL)
VAN WECHEM GUSTAAF LOUIS (NL)
International Classes:
E21B7/06; E21B7/20; E21B7/26; E21B7/30; E21B17/20; (IPC1-7): E21B7/26; E21B7/06
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