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working order and supervise its installation on the seafloor. Often,
floaters also have an assistant subsea equipment supervisor.
Also associated with floating offshore rigs are barge engineers,
who are also, called "barge masters" or "barge control operators."
Semisubmersible rigs, whose pontoon-shaped hulls are submerged
just below the water's surface, require barge engineers to keep the rig
stable and trim while it is at work or being moved.
Office Personnel
Vital to any drilling project are those who work in or near
company offices. Operating companies, drilling contractors, and
service and supply companies hire geologists, accountants,
bookkeepers, sales personnel, and trainers. They also hire personnel
specialists, planners, drilling engineers, environmental specialists,
warehouse personnel, and safety specialists. In addition, they employ
truck drivers, storage yard personnel, lawyers, drafting technicians,
and a clerical staff to back up those in the field. Without a competent
office staff, no company or contractor could keep a drilling operation
going. Now let's take a closer look at the stuff they're drilling for: oil
and gas.

4 Find synonyms in the text for the following words.
a bog to be situated
a worker a rope
to deliver an enterprise
to control a layer
debris

5 Find antonyms in the text for the following words.
careless to disengage oneself from an
simple obligation
to pull put to keep silent
a refinement an upsurge

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