SEAT AND APPARATUS FOR SUPPORTING MULTIPLE COLUMN SUSPENSION DEVICES IN A WELL HEAD, JOINT ASSEMBLY, APPARATUS FOR OPERATING AN ELASTOMERIC JOINT AND METAL CONTACT ON METAL, TOOL FOR OPERATING A CLUTCH AND RETENTION ASSEMBLY, TOOL TO DESCEND SUSPENSION DEVICE IN SUBMARINE WELL HEAD, SHUTTERING AND RETENTION ASSEMBLY, COLUMN SUSPENSION DEVICE, APPARATUS FOR SHUTTING AND LOCKING A U-SUSPENSION DEVICE

摘要

The invention relates to a submarine well head system. The system comprises a tubular seat 70 for activation in a head of wells 24 by means of teeth 66, 76, and the like. CLIQUETS 92. THIS SEAT HAS A SHOULDER 80 FOR RECEIVING A TUBING OR COLUMN SUSPENSION DEVICE 50. / P P FIELD OF APPLICATION: OIL AND GAS SUBMARINE WELL DRILLING. / P