Page 149 - Practical Well Planning and Drilling Manual

Section 2 revised 11/00/bc 1/17/01 12:04 PM Page 125

Preliminary Work For the Drilling Program [ ]
2.1.1

General notes:

References to government, company, and oilfield standards and
procedures
Reporting procedures
Quality control requirements (e.g., sampling and data recording)
Diagram of the completed well, showing casing depths, liner tops, etc.
Checklists of equipment and who supplies it (rig, company,
or vendor)

Drilling notes (for each hole section):

Wellbore stability—potential problems and how to
minimize/recover from
Particular hole problems and how to avoid them
Required drilling practices
Recommended operational sequence outline (avoid writing out
normal rig operations in detail)
Kick tolerance at anticipated pore pressures and fracture gradients
when the next casing point is reached
Proposed bits and BHAs together with recommended drilling para-
meters and performance expectations (compare to offset bit runs
where applicable)
Special requirements

Mud engineering and supervision:

Mud gradients, types, required properties, pH, test requirements,
and any special requirements (such as shale extrusion tests to mea-
sure inhibition effectiveness)
Monitoring cavings levels and sampling, describing, and preserv-
ing cavings
Mud sampling requirements (e.g., times, sample sizes, how pre-
served, etc.)
Wellbore stability requirements
Other mud formation requirements
Reporting requirements (daily and post-well)
Solids control requirements

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