Decentralizer tool for use with wireline logging operations

A decentralizer tool for use with wireline logging operations, comprising:

• a housing sized to enter a wellbore and defining a longitudinal tool axis of the decentralizer tool, the housing having an inner diameter and an outer diameter;
• an adapter at an end of the housing configured to connect to a bulk density tool;
• a spring partially defining an outer diameter of the decentralizer tool, the spring including a first spring end coupled to an exterior tool surface of the housing, a second spring end external to the housing that is spaced apart from the first spring end, and an intermediate spring section between the first and second spring ends;
• a spring support member extending radially through the housing and including an exposed portion extending radially beyond the outer diameter, the exposed portion coupled to the second spring end and a hidden portion extending radially inwardly of the inner diameter of the housing;
• a motor inside the inner diameter of the housing;
• and
• an actuator operatively interposed between the spring support member and the motor configured to move, via output of the motor, the spring support member in an axial direction along the longitudinal tool axis between a first target position of the spring support member and a second target position of the spring support member to change a state of the spring, wherein:
• the second spring end moves together with the spring support member substantially a same distance as the spring support member;
• movement of the spring support member towards the first spring end causes the intermediate spring section to expand toward an inner wall structure of the wellbore to engage the inner wall structure, and
• movement of the spring support member away from the first spring end causes the intermediate spring section to contract away from the inner wall structure to disengage from the inner wall structure.