METHOD AND DEVICE FOR PRODUCING AN OPENING FROM A MOTHERBORE AND INTO A FORMATION

摘要

A method and device for producing an opening (28) from a motherbore (1) into the surrounding formation (2), wherein the method includes: - positioning a motor (6), having a rotatable barrel (10), in the motherbore (4); - passing an elongated body (22) through the barrel (10); and letting the motor (6) rotate the elongated body (22) as the elongated body (22) is moved along the barrel (10) and into the formation (2).