deviating where the drillpipe may be moving around within the wellbore in fig1 and 12 a seventh embodiment of the smear tool 610 is shown having a large body 614 and roller trowels 620 three roller trowels are shown evenly spaced around the body 614 but more or fewer roller trowels 620 could be installed the body includes recesses to receive the roller trowels 620 and provides rotation on axes 620 a with mounts upon which the roller trowels may freely rotate as the roller trowels come into contact with the wall of the wellbore the roller trowels 620 have a generally smooth perimeter that rolls along the inside wall of the wellbore to smear the lcm and cuttings against the wall without scarifying the wall these various embodiments of the smear tools would preferably be installed in a drilling assembly preferably the bottom hole assembly to bring the smear tool as close to the bit as practical this is desirable because the benefit of the smear tool will only occur when the smear tool reaches the formation the farther back in the drilling assembly the smear tool is the longer is the time before the formations are smeared and strengthened it may be necessary to space multiple smear tools periodically in the drill string as noted above it is desirable.