Round 10: Tossup 8

The propagation time of these structures minus shut-in time over all shut-in time is plotted on the x-axis of a Horner plot, which can be simplified if shut-in time is small to create an MDH plot. Inside these structures, a Kelly drive is located just above the bell nipple of the BOP. These structures are regulated by a “Christmas tree” assembly. “Red” Adair frequently used bullheading to avert (*) fires in these structures, which can incorporate a (10[1])pumpjack. An errant pressure balance in the mud column of these structures can cause a “kick” where formation fluids rise to the surface. (10[1])These manmade structures can access unconventional resources by mixing proppants with high-pressure fluid and injecting it into bedrock. (-5[1])For 10 points, (-5[1])a “blowout” involves fluid gushing from what structures created by drilling for hydrocarbons? ■END■ (10[1])

ANSWER: oil rigs [or oil wells or oil reservoirs or oil platforms or oil derrick or offshore platforms; accept drillholes until “drilling”; accept petroleum or natural gas instead of “oil”; prompt on partial answer]
<BC, Other Science (Engineering)> | NAFTA-Packet-11
= Average correct buzzpoint

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