An enlarged pipe at the top of a casing string that serves as a funnel to guide drilling tools into the top of a well. The bell nipple is usually fitted with a side outlet to permit drilling fluids to flow back to the surface mud treating equipment through another inclined pipe called a flowline.
[pdf] A trip tank is a low-volume, calibrated tank that can be isolated from the remainder of the surface drilling fluid system and used to accurately monitor the amount of fluid going into or coming from the well.
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Since BOPs are important for the safety of the crew and natural environment, as well as the drilling rig and the wellbore itself, authorities recommend, and regulations require, that BOPs be regularly inspected, tested and refurbished. .
A blowout preventer (BOP) (pronounced B-O-P) is a specialized or similar mechanical device, used to seal, control and monitor and gas wells to prevent , the uncontrolled release of crude oil or natural. .
When wells are drilled on land or in very shallow water where the wellhead is above the water line, BOPs are activated by hydraulic pressure. .
During the incident on April 20, 2010, the blowout preventer should have been activated automatically, cutting the drill string and sealing. .
• 2010-06-24 at the May 2010• May 2010 .
Blowout preventers come in a variety of styles, sizes and pressure ratings. Several individual units serving various functions are combined to. .
BOPs come in two basic types, ram and annular. Both are often used together in BOP stacks, typically with at least one annular BOP capping a stack of several ram BOPs.Ram blowout preventerThe .
• • with a list of notable offshore well blowouts• • •
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