2018 Offshore Technology Yearbook

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44 | December 2017 | 2018 OFFSHORE TECHNOLOGY YEARBOOK | FIXED AND FLOATING SYSTEMS hold, Hoegh LNG will deliver three more units next year. Excelerate Energy will add two, and JSK will contribute the sixth new unit to the global fleet. In 2019, Exmar's Jafrabad is scheduled for delivery to Swan Energy, and HHI plans to complete work on the Karnataka for Fox Petroleum. PREPA plans to deliver the Aguirre GasPort the following year. Innovative concepts While more units move onsite and begin opera- tions, R&D efforts are delivering more technol- ogies with the potential to improve drilling and production. Early in 2017, Frontier Deepwater Appraisal Solutions LLC introduced its ultradeep- water Appraisal Production System (APS), which the company says is feasible with oil at $50. This concept converts sixth-generation semisubmers- ibles to produce a unit that can be deployed early in the appraisal process, providing direct vertical access for drilling, completion and well interven- tion to collect production data that will enhance understanding of the reservoir. According to designers, the APS increases safety by removing the subsea BOP, drilling riser, dynamic positioning system and associated hardware and installing a movable wellbay that supports dry-tree well tieback risers with a polyester taut leg mooring system that the company says will allow it to weather a 1,000-year hurricane in the GoM. The arrangement of the APS allows wellheads to be located beneath the center of the drilling derrick for drilling and completion operations. A new concept developed by Japan's Chiyoda Corp. offers a novel approach to delivering new sources of power. The conceptual design is based on converting existing LNG carriers into floating power plants with small- ( ~ 72 MW) to medium- ( ~ 400 MW) scale power generation capabilities. The design combines FLNG and FSRU concepts for a hybrid that the company says has a shorter delivery time and can significantly lower costs. By supplying electricity directly to land from these units via heavy-duty electrical cable, Chiyoda plans to offer LNG power generation facilities in remote areas, eliminating the infrastructure required by traditional LNG plants, such as receiving and onshore power generation facilities. Hyundai Heavy Industries (HHI) also has intro- duced a new FLNG design that HHI Senior Vice President, Shipbuilding Division Jae-Eul Kim announced, "can be constructed for about half the cost as compared to a standard FLNG hull." According to the company, a newbuild conversion FPSO hull concept design that follows the same process is under development as well. Meanwhile, BP has introduced a versatile new concept, called the JackSemi, as an alternative to traditional hull designs for either drilling or pro- duction systems. The hull of the JackSemi incor- porates a jacking system positioned above the water line to raise and lower the deck. Support col- umns can be fitted with strakes to minimize vortex induced motions, and keel structural framework can be installed in the pontoons to accommodate risers. It is designed for both fixed and variable bal- last, which allows the height of the center of buoy- ancy to be increased above the center of gravity to improve motions and increase stability. Construc- tability makes this design particularly desirable, according to BP. Because the deck can be lowered quayside, smaller cranes could be used to move topsides equipment into place, which means more yards would be able to construct these units. 2018 and beyond While activity in the fixed and floating asset sectors has gained momentum, the road ahead will not be smooth. Wavering oil prices will continue to chal- lenge developments, and companies will have to continue sharpening their pencils to find ways to make developments profitable, particularly in deep water. The number of units delivered in 2017 and on order for the next five years is a sign of renewed activity, but only time will tell if the momentum will be sustained. n While activity in the fixed and floating asset sectors has gained momentum, the road ahead will not be smooth. Wavering oil prices will continue to challenge developments ...

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