Drill string with centralizer

A method for drilling a borehole with a drill string, the method comprising:

• positioning a centralizer of a centralizer assembly such that an internal shoulder of the centralizer extending radially inward from and azimuthally around an inner circumference of the centralizer is between an outer housing of the centralizer assembly and a lower sub of the centralizer assembly, wherein at least one of the outer housing or the lower sub comprises a mating profile located on an axially oriented face and the centralizer comprises a single eccentric blade;
• azimuthally aligning the centralizer relative to the drill string via at least one alignment profile on the centralizer located on at least one axially oriented face by engaging the alignment profile with the at least one mating profile;
• threadably engaging the lower sub with the outer housing to engage the internal shoulder and retain the centralizer in the aligned position using the at least one alignment profile being engaged with the at least one mating profile;
• and
• drilling the borehole using the drill string and the centralizer assembly.

A centralizer assembly for use with a drill string, the centralizer assembly comprising:

• an outer housing;
• a lower sub threadably engaged with the outer housing;
• wherein at least one of the outer housing or the lower sub comprises a mating profile located on an axially oriented face;
• and
• a centralizer comprising:
• a single eccentric blade;
• an internal shoulder extending radially inward from and azimuthally around an inner circumference of the centralizer, wherein the internal shoulder is positioned between the outer housing and the lower sub;
• and
• at least one alignment profile located on at least one axially oriented face to align the centralizer in an azimuthal position relative to the drill string by engagement with the at least one mating profile, the centralizer being retainable in the aligned azimuthal position by the engagement of the at least one alignment profile and the at least one mating profile and the internal shoulder being engaged by the threaded engagement of the outer housing and the lower sub.