04854397 is referenced by 119 patents and cites 11 patents.

A system for directional drilling and related method of use is described herein which utilizes a drillstring suspended within a wellbore with an MWD and downhole turbine or motor connected adjacent a drill bit on a lower end of the drillstring, and with a top drive and/or rotary table connected adjacent an upper end of the drillstring. Within the method, desired limits of drilling associated parameters are inputted into a memory associated with a programmable digital computer. While drilling the wellbore, transmitted values of the drilling associated parameters are inputted into the memory. If the transmitted values are outsude of the desired limits, necessary adjustments are calculated and then made to weight-on-bit (WOB), RPM and/or drillstring azimuthal orientation to bring the transmitted values within the desired limits.

Title
System for directional drilling and related method of use
Application Number
7/244770
Publication Number
4854397
Application Date
September 15, 1988
Publication Date
August 8, 1989
Inventor
Warren J Winters
Tulsa
OK, US
Tommy M Warren
Coweta
OK, US
Agent
Fred E Hook
Scott H Brown
Assignee
Amoco Corporation
IL, US
IPC
E21B 47/022
E21B 44/00
E21B 7/04
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