Round 11: 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 pumpjack. An errant pressure balance in the mud column of these structures can cause a “kick” where formation fluids rise to the surface. These manmade structures can access unconventional resources by mixing proppants with high-pressure fluid and injecting it into bedrock. (10[1])For 10 points, a “blowout” involves fluid gushing from what structures created by drilling for hydrocarbons? ■END■

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