Download - Oil and Gas Drilling mud | Michael Bowen
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MICHAEL BOWEN OIL AND GAS DRILLING
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OIL & GAS DRILLING
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THE BIT Rotary drill
bit designed to crush rock
Carbide or diamond impregnated steel
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DRILLING MUD Crushed rock has to get
out of the hole, also the hole must be supported – use drilling mud to do both
Can use air, water, water with additives (clays, chemicals to affect viscosity and heat transfer), oil, and synthetic fluids
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DRILL STRING Combined term for the
bit, the drill stem (hollow, turns the bit and pushes fluid down), annulus (outside the stem where the mud comes up), and drill collar (weight to ‘push’ bit down into the rock)
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WELL CASING
Casing is the tube (often steel) that is sealed to the borehole with cement – prevents leakage (in or out) and strengthens the hole
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DERRICK / PLATFORM Working area for all drill operations, on
land or at sea, engines, equipment, casing and string storage
Derrick is the part sticking up that feeds casing/string down the borehole
Also contains the machines for turning the drill string and bit, injecting and collecting the mud
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STRIKING OIL What happens when the bit finally breaks
through the capping formation and into the reservoir rock at an oil & gas trap?
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BLOWOUT PREVENTER Device to control and stop erratic pressures
and prevent a blowout
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Thanks