Patent ID: 6470973
Filing Date: 2002-10-29
Classification: E21B

Abstract:
A side element of a drilling template, comprising:a first end and a second end; a hinge section (2) at the first end, the hinge section comprising flanges (4) with mutually coaxial, through-going holes; a hinge pin (6) extending through the through-going holes, the flanges and through-going holes adapted to link the hinge section to a central section of a drilling template via the hinge pin; the hinge section having a contact section (8) with a contact surface (10) for abutment against a corresponding contact section of the drilling template; a receiving section (14) at the second end, the receiving section comprising a truncated cone-shaped funnel section (16) diverging upwards when the receiving section is in a normal horizontal, upright position; an adapter, with first and second connection sections, the first connection section for releasable connection with the receiving section and the second connection section for releasable connection with drilling equipment; and at a narrow, lower end of the funnel section, a tubular section (18) with inwardly projecting claws (22), the claws being movable radially inwards towards a longitudinal axis of the funnel section to releasably engage the adapter, wherein the hinge section further includes a disc-shaped accompanying element secured by the hinge pin and positioned to prevent the receiving section from pivoting below a horizontal line described by the normal horizontal, upright position.