Well tools having magnetic shielding for magnetic sensor

A well tool, comprising:

• a housing having a longitudinal axis;
• at least one magnetic sensor in the housing, the sensor having first and second opposite longitudinal sides relative to the housing longitudinal axis;
• and
• a magnetic shield interposed between the housing and each of the first and second opposite longitudinal sides of the magnetic sensor, wherein the first and second opposite longitudinal sides are longitudinally aligned with at least a portion of the magnetic shield.

A well tool, comprising:

• a housing having a longitudinal axis;
• first and second magnetic sensors, the first and second sensors having first and second opposite longitudinal sides relative to the housing longitudinal axis, the first magnetic sensor senses a magnetic field oriented in a first direction orthogonal to the longitudinal axis, and the second magnetic sensor senses a magnetic field oriented in a second direction parallel to the longitudinal axis;
• and
• a magnetic shield interposed between the housing and each of the first and second opposite longitudinal sides of the first and second magnetic sensors, wherein the first and second opposite longitudinal sides are longitudinally aligned with at least a portion of the magnetic shield.