This talk deals w/ the methods used to get wireline (WL) sensors in and out of wellbores. Although the primary focus of the presentation is open-hole, most of the methods discussed are applicable to cased-hole wells. Following a brief history of well drilling there will be a general description of the various types of wells and the logging challenges they present.

Following a brief introduction to directional drilling, various philosophies/strategies for logging those wells are reviewed from a “value-of-information” perspective. Descriptions of typical logging conveyance systems are followed by a discussion of more complex solutions for difficult logging scenarios. An overview of stuck logging tools is followed by a primer on how drillpipe may be used in logging wells with both large and small (2 ?”) diameter tools.

The final topic is logging high angle wells with tractors and coiled tubing. The twists and turns in our wells can create some unique petrophysical puzzles. Complex wellbores often generate artificial log responses that mask true formation properties. A table summarizing oilfield formation evaluation methods and a simplified pragmatic overview wraps up the presentation.

End_of_Record - Last_Page 21---------------