Assignment title: Information
Diploma in Marine Surveying
CASE STUDY for Specialist Module G
Warranty Surveys including Mobile Offshore Units
You have been instructed by an oil company to attend a Mobile Offshore Drilling
Unit during its next transit to a location thirty nautical miles away from its
present position in the Caribbean sea. This rig is under contract to drill seven
exploration wells in the oil company’s concession block. During the previous two
moves there were a number of delays that, from the oil company’s point of view,
caused the rig to incur three days of operational downtime.
The rig is supported by two 12,000 bhp Anchor Handling Supply Vessels which
started their charter with the drilling rig and are due to stay for the entire drilling
program. Both rig and the Anchor Handling vessels have worked with this oil
company on previous occasions without any major problems but the vessels are
much older now than they were at the start of the association between the two
companies.
The rig moves are carried out under the direction of the oil company’s own
marine department and as a consequence, the drilling department of the oil
company has asked for your report, as an independent assessor, of the likely
causes of the delays, and has asked for your recommendations and advice about
the next move.
a) Detail the preparations you will make to conduct such an assessment
listing the equipment you would take and the precautions required for
working as a surveyor during a rig move.(30%).
b) Outline the possible problems you may encounter. In particular list the
personnel you would wish to speak to. How will you overcome their
possible defensive attitude? (20%).
c) Show a detailed format of a report that you would make into the delays
using headings and bullet points only and give the possible reasons which
are likely to cause such a delay. (50%).
Word count target is 3000 words.