DEVICE, SYSTEM AND METHOD FOR DRILLING AND COMPLETING A LATERAL WELL

摘要

PATENT INSTITUT FRANCAIS DU PETROLE DEVICE, SYSTEM AND METHOD FOR DRILLING AND COMPLETING A LATERAL WELL Inventors: Lew HAYES, Larry COMEAU, Christian WITTRISCH and Ray SMITH - The present invention relates to a lateral drilling system with respect to a main well (1), which is cased by means of a casing string (4). - At least part of the casing string (4) provides a lateral opening (21) adapted for drilling a lateral well (2). - A guiding device is positioned in the casing string part in front of the lateral opening and controlled from the surface. - A lateral casing string equips the lateral well and provides a sub for connecting it to the main string. - The present invention further relates to a method for drilling and completing a lateral drain drilled from a cased main well. - Application: oil field production. - FIG.1 to be published.