a substantially straight borehole in a typical drilling operation drill string 10 rotation at the surface varies from approximately 30 to 120 rpm in the event that orientation is required to control deviation or direction of the borehole 12 the drill string 10 rotation from the surface would be slowed preferably to between approximately 35 to 65 rpm the control assembly 28 will be activated in response to a pressure signal sent from the surface to control fluid bypass through the second motor assembly 30 to regulate the rotational speed of the first drilling motor assembly 22 to a substantially non rotating position relative to the drill string 10 as torque from the first drilling motor assembly 22 driving the bit 20 changes the control assembly 28 will control the fluid bypass through the second motor assembly 30 to maintain the rotation speed of the first drilling motor assembly 22 to a substantially non rotating position relative to the drill string 10 after the desired direction or inclination of the borehole has been achieved rotation of the drill string 10 from the surface will be increased to the normal range and the control assembly 28 would be set for a fluid bypass level approximately 50 in the preferred embodiment typical for normal drilling operations the tool face data for monitoring the relative rotational position of the first drilling motor assembly 22 is be derived from the mwd assembly 26 the foregoing description of preferred and other embodiments is not intended to limit or restrict the scope or applicability of the inventive concepts conceived of by the applicants in exchange for disclosing the inventive concepts contained herein the applicants desire all patent rights afforded by the appended claims therefore it.