Figure F13. Generalized decision tree for logging and contingency operations depending on the success of logging-while-drilling (LWD) operations, the time available for simple and/or complex wireline operations, the operational constraints on wireline operations, and the time and operational constraints on drilling/coring at contingency sites. Green lines = successful operations, or "go," red lines = unsuccessful operations, or "stop." HNGS = Hostile Environment Gamma Ray Sonde, FMS = Formation MicroScanner, FMI = Formation MicroImager, GPIT = General Purpose Inclinometer Tool, DSI = Dipole Sonic Imager, HLDS = Hostile Environment Litho-Density Sonde, HAPS = Hostile Accelerator Porosity Sonde, HRLA = High-Resolution Laterolog Array, VSI = Vertical Seismic Imager, RFT = retrievable formation tester.
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