Hammer drill

摘要

A downhole apparatus connected to a workstring within a wellbore. The workstring is connected to a bit member. The apparatus includes a mandrel operatively connected to a downhole motor mechanism, an anvil member operatively formed on the bit member, the anvil member being operatively connected to the mandrel, a radial bearing housing unit operatively connected to the workstring, with the radial bearing housing unit being disposed about the mandrel, and a hammer member slidably attached to the radial bearing housing unit.

主权项

1. A downhole apparatus connected to a workstring within a wellbore, comprising:
a power mandrel operatively connected to a motor means; an anvil member operatively formed on a bit member, the anvil member being operatively connected to the power mandrel; a radial bearing housing unit operatively connected to the workstring, the radial bearing housing unit being disposed about the power mandrel; a spring saddle having an upper section and a lower section, the upper section of the spring saddle being operatively and directly attached to the radial bearing housing unit; a spring spacer disposed about the lower section of the spring saddle; a spring having a first end and a second end, wherein the spring is operatively disposed about the lower section of the spring saddle with the first end of the spring abutting the spring spacer; and a hammer member slidably positioned between the anvil member and the spring saddle, wherein the hammer member abuts the second end of the spring.