Patent ID: 9587467
Date: 2017-03-07
CPC Classifications: E02B,E21B,Y10S

Claim:
1. A containment system for recovering hydrocarbon fluid from a leaking device that is situated at the seafloor and that is leaking hydrocarbon fluid from a well, wherein the containment system is adapted to be landed at the seafloor corresponding to a base level of the containment system, and wherein the containment system comprises at least: a wall extending from the base level to a first level so as to completely surround the leaking device, said wall being substantially sealed to the seafloor around said leaking device, and a dome situated above the wall and forming a cavity under said dome, said cavity being adapted for accumulating hydrocarbon fluid coming upwardly from the leaking device, said dome comprising at least one upper output opening adapted to extract the hydrocarbon fluid for recovering, and wherein the containment system further comprises a lower output opening extending up to a dome level, and wherein the wall and the dome are independent members so the wall can be landed on the seafloor before the dome is installed, and wherein the dome comprises an upper portion extending in a radial direction from a centre vertical axis to an outer peripheral end, and a lateral portion extending the upper portion downwardly from said outer peripheral end at least down to the lower output opening, and wherein the lateral portion comprises: a lateral rigid structure extending from the upper portion to a lower end intended to be seated on the seafloor at the base level, said lateral rigid structure not closing the lateral portion, and an extendable device that is extendable from the upper portion to the lower output opening, so as to close partially the lateral portion of the dome.