Patent ID: 9605481
Date: 2017-03-28
CPC Classifications: E21B

Claim:
1. A downhole adjustable drilling inclination tool comprising: an outer housing comprising a guide pin that extends into an interior of the outer housing; an inner housing comprising a bottom end portion disposed within the outer housing; a compression spring disposed about an exterior surface of the bottom end portion of the inner housing within the outer housing; a piston assembly disposed within the outer housing that is fluidly controlled to move along the exterior surface of the bottom end portion of the inner housing so that a rotatable control ring moves about the guide pin of the outer housing to hold a neutral, straight, or bent position of the piston assembly corresponding to an amount of compression of the compression spring; and a tilt housing partially disposed within the outer housing that includes a bolt plate channel configured to receive a bolt plate pin of the piston assembly that travels in the bolt plate channel to tilt the tilt housing by a tilting mechanism that connects the tilt housing to the outer housing and positions the tilt housing in a neutral, straight, or bent position corresponding to the neutral, straight, or bent position of the piston assembly, wherein the downhole adjustable drilling inclination tool is configured to receive a drive shaft within an innermost diameter of the tool.