JACK UP HPHT DRILLING RISER DEVELOPMENT. New technology, delivered through the combined strength of Claxton, 2H Offshore and SRP , enables HPHT drilling from jack up rigs. The riser has a unique design. It is the world’s first full-bore access 18 3 /4" riser capable of working at pressures in excess of 12,000 psi. Linked to this, the flanges used to connect the individual pipe sections were attached using a shrink-fit process; the first time thi

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