Glossary of Terms   Chemical Energy: The energy released when
substances combine or break down and form new substances  Coal:
A solid fossil fuel formed by heat and pressure from the remains
of ancient plants in swampy areas  Combustion: The process of
burning a fuel to release heat energy  Conversion: The changing
of a substance or the energy in it from one form to another
Derrickhands: The handlers of the upper end of the pipe as it is
hoisted out of or lowered into the well hole while ensuring the
circulation of machinery and the conditioning of the drilling
fluid  Drillers: Those who are directly responsible for the
drilling of the hole including operating and maintaining the
drilling controls  Drilling Crews: The collective work of
several individuals, companies, contractors and suppliers who
dig and create oil wells  Energy: The ability to do work or make
things move.  Environmental Geologists: Work to solve problems
associated with pollution, waste management, urbanization and
natural hazards by study