Project Information

Low Cost Flexible Production System for Remote Ultra-Deepwater Gulf of Mexico Field Development


Primary Performer
Doris, Inc.

Additional Participants
SSP Offshore
Doris Engineering

Researchers will evaluate a circular-shaped floater with storage and a floating production unit with direct production to shuttle tankers as a possible concept for use as a safe, environmentally sound, and economically feasible low-cost remote deepwater production system. The study will include an evaluation of various riser options, dynamically positioned shuttle tanker operations analysis, risk analysis and hazard identification, and analyses of hurricane abandonment acceptability with hydrocarbons in storage and regulatory/compliance requirements. Model testing in a wave tank using simulated hurricane-force conditions will be included in the study.

The objective of this project is to study the feasibility of a circular shaped floating platform unit as compared to two current FPU concepts, semi-sub and spars. The floater host will be located in 2,000-3,000 meters of water depth. Production will be gathered via four production risers from two separate drill centers. It is planned that gas will be exported with a gas riser/pipeline. The drill centers will sustain a total of 10 wells. Each well will be connected to wet trees controlled via umbilicals and power cables. Artificial lift supplied by either subsea pumps or downhole electric submersible pumps, is required. Processed oil will be directly offloaded from a single offloading station. It is anticipated that capacity for three additional risers for future improved oil recovery via water injection and/or future tie-ins will be required.

During the first phase of this project and for each of the three floater concepts – circular, semi-sub and spar – topsides preliminary design and analysis will be determined as well as the global performance assessment of the hulls. A riser study will determine which riser type is the most cost efficient and safe solution. Risk assessment and regulatory requirements will also be a focus of this study. An availability analysis and full oil export concept evaluation will determine the feasibility of direct offloading. After those evaluations, concept ranking of the three floater types will take place based on pre-defined key parameters.

Principal Investigators: Sarah Tucker

Project Cost:
DOE share: $1,197,827
Recipient share: $299,456

Project Duration: 1? years