Patent ID: 7191850

Claim:
A method of drilling a well with a bit comprising: a. Calculating an estimated formation dip angle, wherein said estimated formation dip angle being based on offset well data, seismic data, core data, pressure data; b. Drilling a well with a logging while drilling means so that real time logging data is generated; c. Collecting drilling data at the surface; d. Processing said real time logging data and drilling data, and wherein said real time logging data includes gamma ray and resistivity, and said drilling data includes rate of penetration, torque and drag, rotating speed, weight on bit, and drilling returns at surface; e. Calculating an instantaneous formation dip angle (ifdip) based on the real time representative logging and drilling data correlated to the estimated formation dip angle data wherein the step of calculating the ifdip includes obtaining the tangent of the amount of rise of the formation over the amount of run of the formation based on a known distance; f. Projecting a target formation window ahead of the well that includes a top of formation and a bottom formation based on said ifdip so that a well path is created; g. Monitoring the real time logging data and drilling data; h. Drilling the well with the bit through the target formation window so that the bit stays within said target formation window; i. Changing the ifdip based on the real time representative logging data and drilling data correlated to the offset well data; j. Adjusting the target formation window; k. Correcting the well path to stay within the target formation window by adjusting the ifdip based on real time representative logging data and drilling data correlated to the offset well data; l. Drilling the well within the target formation window to the predetermined location; and, completing the well.