Patent ID: 7260477

Claim:
A method for determining a parameter vector of a borehole, the method comprising: (a) providing a downhole measurement tool in the borehole, the tool including a plurality of standoff sensors deployed thereon; (b) causing the standoff sensors to acquire a plurality of sets of standoff measurements at a corresponding plurality of times; (c) proccssing a system of equations to calcuate both the parameter vector of the borehole and an azimuth of at least one of the standoff sensors at each of the plurality of times, the system of equations including variables representative of (i) (he parameter vector of the borehole, (ii) the plurality of sets of standoff measurements, (iii) an unknown lateral tool displacement vector in the borehole at each of the plurality of times, and (iv) the unknown azimuth at each of the plurality of times; and (d) performing at least one step selected from the group consisting of: (i) storing the parameter vector to downhole or surface memory, (ii) transmitting the parameter vector to the surface, and (iii) displaying the parameter vector to an operator.