Patent ID: 8151890

Claim:
A method of deploying a production tree to a sea floor, comprising: (a) providing an upper tree module, a lower tree module, and a choke bridge module; (b) assembling the upper tree module, the lower tree module, and the choke bridge module into operative engagement with each other on land to form a modular production tree assembly and testing the modular production tree assembly; (c) after testing the modular production tree assembly, transporting the upper tree module, the lower tree module, and the choke bridge module to an offshore rig; (d) separately lifting the upper tree module, the lower tree module, and the choke bridge module onto the offshore rig with a first crane mounted to the offshore rig; (e) reassembling on the offshore rig the upper tree module, lower tree module and choke bridge module into the modular production tree assembly; then (f) performing interface testing of the modular production tree assembly of interfaces between the upper tree module, lower tree module and choke bridge module; and then (g) deploying the modular production tree assembly to the sea floor with a second crane mounted to the offshore rig.