Patent ID: 8875808
Filing Date: 2014-11-04
Classification: E21B

Abstract:
1. A method of obtaining well log data from a well bore comprising: (a) running a drill pipe string having a longitudinal bore into a well bore to a predetermined position, said drill pipe string including a landing sub disposed proximal to a lower end of the drill pipe string; (b) inserting a logging tool string into a proximal upper end of the longitudinal bore of the drill pipe string, said logging tool string comprising a running tool attached to a cable, a landing assembly and one or more logging tools; (c) pumping a fluid into the upper proximal end of the longitudinal bore of the drill pipe string above the logging tool string to assist, via fluid pressure on the logging tool string, movement of the logging tool string down the longitudinal bore of the drill pipe string; (d) spooling out the cable at the surface as the fluid is pumped behind the logging tool string and the logging tool string is moving down the longitudinal bore of the drill pipe string; (e) observing the pump pressure at the surface during the pumping of the fluid; (f) landing the landing assembly of the logging tool string in the landing sub of the drill pipe string, wherein at least a portion of the logging tool string including the one or more logging tools is disposed below a distal end of the drill pipe string; (g) observing the pump pressure at the surface increase when the tool string is landed in the landing sub; (h) determining by one or more devices in the logging tool string that the logging tool string is landed in the landing sub and sending one or more signals to one or more logging tools; (i) activating and running by a diagnostic module located in the logging tool string a diagnostic test of the one or more logging tools to determine that the one or more logging tools are functioning properly; (j) sending instructions by the diagnostic tool to a release mechanism located in the logging tool string to release the running tool portion of the tool string; (k) observing a decrease in the pump pressure at the surface indicative of release of the running tool portion from a remaining portion of the logging tool string; and (l) spooling in the cable at the surface and retrieving the running tool portion.