EP 0404669 B1 19930210 - METHOD AND APPARATUS FOR CONDUCTING PERFORATING OPERATIONS IN A WELL
Title (en)
METHOD AND APPARATUS FOR CONDUCTING PERFORATING OPERATIONS IN A WELL
Publication
Application
Priority
FR 8908309 A 19890620
Abstract (en)
[origin: EP0404669A1] Method and apparatus making it possible to obtain a perforation of the wall of a well by the action of a tool, such as an explosive gun. Lowered into the well is a working assembly comprising a perforation tool (4) associated with a measurement housing (5), such as a logging probe and temperature and pressure sensors. The assembly (4, 5) is suspended by means of a connecting cable on a supporting element (8) capable of being locked on the inside of and on the base of a column (1). The column is lowered as far as the working zone and blocked by means of a packer (2). The supporting element (8) and the assembly (4, 5) are displaced by means of a control cable lowered from the surface, and the best locations of the well for carrying out the blasts are determined by means of measurements. Sensors contained in the housing (5) make is possible to monitor the results. After the work has been carried out, the gun (4) is left in the well, and the supporting element (8) and housing (5) are raised in order to open up the interior of the column. The invention is used, for example, for oil-producing wells. <IMAGE>
IPC 1-7
IPC 8 full level
E21B 17/06 (2006.01); E21B 23/14 (2006.01); E21B 43/116 (2006.01); E21B 43/119 (2006.01); E21B 47/04 (2012.01)
CPC (source: EP US)
E21B 17/06 (2013.01 - EP US); E21B 23/14 (2013.01 - EP US); E21B 43/116 (2013.01 - EP US); E21B 43/119 (2013.01 - EP US); E21B 47/04 (2013.01 - EP US)
Designated contracting state (EPC)
DE DK ES GB IT NL
DOCDB simple family (publication)
EP 0404669 A1 19901227; EP 0404669 B1 19930210; CA 2019421 A1 19901220; CA 2019421 C 20000530; DE 69000895 D1 19930325; DE 69000895 T2 19930527; DK 0404669 T3 19930607; ES 2040078 T3 19931001; FR 2648509 A1 19901221; FR 2648509 B1 19911004; NO 180651 B 19970210; NO 180651 C 19970521; NO 902698 D0 19900618; NO 902698 L 19901221; US 5044437 A 19910903
DOCDB simple family (application)
EP 90401733 A 19900618; CA 2019421 A 19900620; DE 69000895 T 19900618; DK 90401733 T 19900618; ES 90401733 T 19900618; FR 8908309 A 19890620; NO 902698 A 19900618; US 54101690 A 19900620