Page 55 - Drilling Technology in Nontechnical Language

46 Drilling Technology in Nontechnical Language Second Edition

e. Equipment checklists and suppliers of each item
f. Cost estimating information to allow the well cost to be
calculated each day
6. Drilling notes for each hole section, including the following:
a. Potential hazards or problems, how to avoid them, and how to
recover from them
b. Required drilling practices

c. Recommended operational sequence of events
d. Kick tolerance information
e. Drill bits recommended
f. Bottomhole assemblies recommended (explained below)

g. Any special requirements

7. Drilling fluid design and maintenance requirements for the
whole well
8. Wellbore trajectory information (that is, the path that the well will
follow from the surface location to one or more downhole targets)
9. Casing design for the well and how the casings are to be
cemented in place
10. Geological information on the formations expected to
be penetrated

11. Logging and coring program—what electrical logs to run,
and if the well is to have a core sample cut, the relevant details
(discussed further in chapter 10)
12. Well completion design and program

13. Well test information, if the well is to be production tested

14. Status of the well when the rig has finished work (e.g., handed
over to production, cemented up and abandoned, etc.)
Obviously, there is a lot of information contained in a drilling program.

Each heading is examined briefly below.

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