RU2002116727A - Vibro-shock mechanism for drilling a well - Google Patents

Claims (1)

A vibro-shock mechanism for drilling a well, including a hollow cylindrical body connected at the bottom with a drill bit equipped with a flushing system, a vibration cavity with a freely moving spherical mass and a vortex element opening into it, and a bypass element not connected with it, providing the movement of the treatment agent characterized in that the hollow cylindrical body in the upper part is connected to the sub, and in the middle part has an inner annular protrusion, while the inner cavity of the sub in the lower part, it is conically expanded under the vortex element, made in the form of a tangential nozzle, and the vibration cavity is located inside the vibration chamber, which is a ball truncated by frontal stops with holes in the central part, placed symmetrically and perpendicular to the axis of the vibration-impact mechanism, while the outer radius of the vibration chamber equal to the inner radius of the hollow cylindrical body, and the radius of the ball mass is determined from the condition r _w = k · R; where r _W is the radius of the ball mass, m; k is the coefficient of proportionality equal to 0.62; R is the inner radius of the vibration chamber, m, moreover, the axis of the tangential pipe is in a plane perpendicular to the axis of the vibration chamber, and the angle of inclination to the axis of the vibro-shock mechanism is equal to the angle of inclination to the axis of the last generatrix of the conical expansion of the internal cavity of the sub, and is determined by the formula:

where α is the angle of inclination of the tangential pipe to the axis of the vibro-impact mechanism or the angle of inclination of the generatrices of the conical expansion of the internal cavity of the sub to the axis of the vibro-impact mechanism, deg; r _p - the inner radius of the tangential pipe, m; h is the height of the tangential pipe, m; δ is the wall thickness of the vibration chamber, m, moreover, the vibration chamber in the upper part is rigidly fixed by a horizontal plate, the radius of which is equal to the inner radius of the hollow cylindrical body, having a central hole for the vibration chamber, and located under the inner annular protrusion of the hollow cylindrical body, the front parts of which have a bypass element in the form of holes, and in the lower part of the vibration chamber is rigidly fixed by a vertical plate with a central saddle-shaped cutout under the latter, while the length of the vertical plate is equal to morning diameter of the hollow cylindrical body, the opening front limiters vibrating chamber and holes are opened in the horizontal plate of the cavity formed by the housing inner wall, the outer surface of the front limiters and the side surfaces of the vertical plate, the flushing system communicating with the drill bit.