Page 311 - Practical Well Planning and Drilling Manual

Section 2 revised 11/00/bc 1/17/01 12:04 PM Page 287

Formation Evaluation [ ]
2.8.2

4. Does the core have to be protected from freezing?
5. How sensitive will the core be to shock or vibration?
6. What documentation is required for transporting the core? (e.g.,
export documents, cargo manifests, governmental reports)

Laboratory analysis

1. Where does the core have to be transported?
2. Have arrangements been made so that the core can be examined
quickly after arriving?
3. Are the laboratory analysis requirements fully defined?
4. Who is to receive copies of the lab reports?

Timing.

1. When should the coring start (earliest/latest dates)?

Safety and quality control

1. Who is in charge during the operation at the wellsite and in the
office?
2. Who are the planning focal points from each department and ser-
vice company involved?
3. Are there any inherent hazards in the operation (e.g., H S, pressur-
2
ized coring)?
4. Can the identified hazards be eliminated or mitigated by changing
the plan?
5. What precautions can be put in place to minimize the identified
hazards and allow safe recovery?

Contingency planning

1. What events could take place that would prevent coring as
planned?
2. Could core be taken as required in a smaller hole size? Are the
smaller sizes of equipment available if drilling conditions require
an extra casing string to be set higher up?
3. Is it possible that the coring requirements could change based on
information obtained while drilling? What impact would that have
on the plan/equipment/personnel?

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