Downhole measurement assembly, tool and method

A downhole tool positionable in a wellbore penetrating a subterranean formation, the downhole tool deployable into the wellbore on a drill string, comprising:

• a drill bit;
• a bottom hole assembly comprising a downhole measurement assembly, the downhole measurement assembly comprising:
• at least one drill collar having at least one compensation portion and at least one force portion with a load path therethrough, the at least one compensation portion having a different dimension from the at least one force portion;
• a plurality of compensation sensors positionable about the at least one compensation portion to measure downhole tool pressures applied thereto;
• and
• a plurality of force sensors positionable about the at least one force portion to measure downhole forces applied thereto;
• wherein the plurality of compensation sensors and the plurality of force sensors are positionable about the at least one drill collar in a strain configuration along the load path whereby the measured downhole tool pressure is isolatable from the measured downhole forces on the at least one drill collar.

A method of measuring downhole parameters of a downhole tool positionable in a wellbore penetrating a subterranean formation, comprising:

• deploying the downhole tool into the wellbore on a drill string, the downhole tool comprising a downhole measurement assembly, comprising:
• at least one drill collar having at least one compensation portion and at least one force portion with a load path therethrough, the at least one compensation portion having a different dimension from the at least one force portion;
• and
• a plurality of compensation sensors positioned about the at least one compensation portion and a plurality of force sensors positioned about the at least one force portion, the plurality of compensation sensors and the plurality of force sensors positioned about the at least one drill collar in a strain configuration along the load path;
• measuring downhole tool pressures with the plurality of compensation sensors and measuring downhole forces with the plurality of force sensors;
• and
• isolating the measured downhole forces from the measured downhole tool pressures.