Patent ID: 7506700

Claim:
A method for steering at least one steerable mud motor while attached to a retrievable replaceable measurement while drilling device, the method comprising the steps of: securing a directional drilling tool to the retrievable replaceable measurement while drilling device, wherein the directional drilling tool comprises: an orientation spear point having a spear axis, wherein the orientation spear point comprises: an end shaft comprising a threadable extension disposed along the spear axis, a support pin having a support pin axis, and an orienting pin having an orienting pin axis, wherein the support pin axis is substantially perpendicular to the orienting pin axis and the spear axis, wherein the orienting pin axis is substantially perpendicular to the support pin axis and the spear axis, and wherein the orienting pin axis and the support pin axis intersect the spear axis; a latch rod with a latching edge; and a nose; a crossover sub comprising: a first threaded section for engaging the threadable extension; and a second threaded section for engaging the retrievable replaceable measurement while drilling device; orienting the retrievable replaceable measurement while drilling device with the spear axis of the orientation spear point; locking the retrievable replaceable measurement while drilling device to the orientation spear point; lowering the orientation spear point with retrievable replaceable measurement while drilling device into a non-magnetic drill collar above the at least one steerable mud motor, forming an assembly; lowering the assembly into a well using a drill pipe; attaching an orienting mule shoe stinger to a gyroscopic device and orienting the gyroscopic device with the orienting mule shoe stinger using an electrical orientation, forming a gyro tool; inserting the gyro tool through the drill pipe using a wireline; and inserting the gyro tool over the assembly and engaging the orienting mule shoe stinger with the orientation spear point thereby orienting the gyro tool with the assembly, enabling steering of the at least one steerable mud motor while attached to the retrievable replaceable measurement while drilling device while maintaining full retrievability of the retrievable replaceable measurement while drilling device from the well.