Page 152 - Practical Well Planning and Drilling Manual

Section 2 revised 11/00/bc 1/17/01 12:04 PM Page 128

[ ] Well Programming
2.1.1

ing required mud properties prior to cementing, spacers, flushes,
scavenger slurries, any reciprocation or rotation during displace-
ment, and displacement regime
Reporting requirements (by job and post-well)
24-hour compressive strength
Minimum pumpable time

Wellhead, BOP equipment, and testing:

Wellhead specifications
Diverter/BOP configuration for each hole section
BOP requirements and specifications including specific test
requirements for each hole section
Drills required
Kick tolerance calculation assumptions made (e.g., state how
much higher overpressure would be vs. mud gradient)
Acceptable levels of influx after kick tolerance calculated
Any special precautions (e.g., controlled ROP at certain points,
flowchecks, increased kick drills, etc.)
Shut-in procedures required
Leakoff or limit tests to be used and procedure
Minimum value of equivalent mud gradient and action to take if
not attained

Geological prognosis:

Expected lithology sequence with names and descriptions of for-
mations, also information on anticipated hole problems (e.g., frac-
tured, sloughing, washouts, etc.)
Anticipated pore pressure and fracture gradients with depth—note
also the level of confidence in the figures given
Geological characteristics of expected formations: permeability,
fluid type, hydrocarbon depths, gas zones, etc.

Wireline logging and petrophysics:

Required logs (from sponsoring department)
Required logs (drilling department requirements for drilling evaluation)

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