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The Lower Riser Package is a mechanical device to protect an oil well located underwater (subsea) and used during an oil well intervention. The LRP is essentially a mini blow out preventer (BOP). The lower riser package consists of a connector to the subsea oil well, a series of safety valves and a connection point at the top for connection to ...
After removal of the failed riser and drill pipe on the Horizon BOP, a capping stack sealed the top of the well on July 15, 2010, stopping the flow of oil into the Gulf of Mexico. The Q4000 was used in a successful static kill procedure, where mud, followed by cement, was pumped into the well, sealing the leak at the source.
Releasing the cord loop by removing the cable with a tug causes the three-ring system to cascade free and quickly disconnect the riser from the harness. Each ring in the series multiplies the mechanical advantage [ 3 ] of the loop of cord that is held in place by the semi-rigid cable (a Lolon-F or Teflon impregnated plastic coated steel cable ...
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no hay tapa - there is no lid; no hubiese existado - would not have existed; no le tengo miedo - I'm not afraid; no los de afuera - not outsiders; no mantienen - they don't keep; No me animé - I did not dare; no me sentía - I did not feel; no nos pareció - we didn't think; no obstante - however; no podemos hacerlo - we cannot do it
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Top risers are advantageous because they take up less space in the flask than a side riser, plus they have a shorter feeding distance. If the riser is open to the atmosphere it is known as an open riser, but if the riser is completely contained in the mold it is known as a blind riser. An open riser is usually bigger than a blind because the ...