Page 148 - Origin and Prediction of Abnormal Formation Pressures

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0
z
Drilling and well logging overpressure detection and evaluation techniques (after Fertl and Chilingarian, 1987, table 11, 8. p. 28)
Variables -0 z m E! Drilling rate, torque, drag, hole fill-up (reaming), modified d-exponent, analytical drilling model 2 P n concepts. $ concepts (using cables, drillstring, or mud system); analysis of Electrical and acoustic-type transmission Z drillstring vibrations; downhole gas detection tool. B s Mud

Drilling parameters (instantaneous) Logging-while-drilling (instantaneous or Drilling mud parameters (while drilling, but delayed Drill cutting analysis (while drilling, but delayed by time required for sample return) geophysical well logs Well logging parameters -

TABLE 5-1 Techniques semi-instantaneous) by circulation lag-time)