EP 1040250 A1 20001004 - SYSTEM AND METHOD FOR POSITIONING A TOOL IN A WELLBORE
Title (en)
SYSTEM AND METHOD FOR POSITIONING A TOOL IN A WELLBORE
Title (de)
SYSTEM UND VERFAHREN ZUR ORTUNG EINES WERKZEUGS IN EINEM ERDBOHRLOCH
Title (fr)
SYSTEME ET PROCEDE PERMETTANT DE POSITIONNER UN OUTIL DANS UN PUITS DE FORAGE
Publication
Application
Priority
- GB 9726524 A 19971217
- GB 9800344 A 19980109
- US 9826883 W 19981217
Abstract (en)
[origin: GB2332462A] A wellbore positioning system for enabling the easy positioning of downhole tools comprises a series of spiral guide slots (5) which are formed on the inner surface of casing tubulars (1). A locating tool (7) is run into the wellbore attached to the downhole tool to be positioned such as a whipstock (10). The locating tool carries a spring loaded key (15) on its outer surface which is forced outwards by the spring and engages with the guide slot when they meet. The locating tool subsequently travels down into the wellbore following a spiral path until the key reaches the end of the guide slot. The downhole tool is now is the desired position. Several such guide slots may be located at different depths and rotational positions in the casing string. These different guide slots may have differing widths or profiles so as only to allow the engagement of predetermined keys thereby allowing the desired depth and rotational orientation of the tool to be accurately achieved.
IPC 1-7
IPC 8 full level
E21B 7/06 (2006.01); E21B 23/02 (2006.01); E21B 47/09 (2006.01)
CPC (source: EP)
E21B 7/061 (2013.01); E21B 23/02 (2013.01); E21B 47/09 (2013.01)
Citation (search report)
See references of WO 9931348A1
Designated contracting state (EPC)
DE FR IT NL
DOCDB simple family (publication)
GB 2332462 A 19990623; GB 2332462 A9; GB 2332462 B 20020522; GB 9827734 D0 19990210; AU 1925299 A 19990705; CA 2315233 A1 19990624; CA 2315233 C 20070612; DE 69829210 D1 20050407; DE 69829210 T2 20060406; EP 1040250 A1 20001004; EP 1040250 B1 20050302; NO 20002920 D0 20000607; NO 20002920 L 20000802; NO 315719 B1 20031013; WO 9931348 A1 19990624
DOCDB simple family (application)
GB 9827734 A 19981217; AU 1925299 A 19981217; CA 2315233 A 19981217; DE 69829210 T 19981217; EP 98964048 A 19981217; NO 20002920 A 20000607; US 9826883 W 19981217