Deepwater

Increase knowledge, and thereby reduce conservatisms, associated with the design process and related limit states of deepwater pipeline design. The key areas of work are: Undertake structural reliability analysis (SRA) to confirm that the SAFEBUCK Design Guideline methodology ensures that the pipeline failure probabilities are consistent with industry targets;
Collection of data on operating pipelines to generate lessons for future design by sharing the combined knowledge of lessons learned from recent projects;

This JIP is initiated to collect and investigate results of past studies on fiber ropes, test procedures and data, code requirements, and fiber rope mooring analysis methods. The JIP will also conduct sensitivity analysis to identify important model and design parameters. Based on the results of the investigation, conservative and practical stiffness models, testing procedure, and mooring analysis method will be developed. The results from this JIP can be used in supporting fiber rope code developments and polyester mooring projects.

Reliable deepwater anchor performance is critical for mooring floating Mobile Offshore Drilling Units (MODUs). Anchor failure can result in MODUs going adrift and colliding with other topside structures as well as dragging anchors that can damage subsea pipelines, seafloor production systems and natural sealife communities.

The objective of the JIP is to provide:
Design guidance on the specification of wire ropes and chains to maximize their design service life for the particular site conditions, in particular in tropical waters.

This study provided a review of the state of the art practices as of 2009 in the removal and disposal of Gulf of Mexico (GOM) U.S. Outer Continental Shelf (OCS) oil and gas facilities in water depths greater than 400 feet.

Specific objectives of this report were: Compare and contrast the risks and benefits of using stiffer synthetic fibers vs. polyester fibers for mooring rope design, manufacturing, installation and long-term operations over the last decade in the Gulf of Mexico.
By theoretical analysis, compare dynamic responses of typical floaters moored with polyester segments and with stiffer fiber segments.

The objective of this project is to review the lessons learned from previous applications of Dual Gradient Drilling and to update the current status of technology as it exists today; summarizing with a risk profile and describing the technical maturity of the dual gradient drilling applications.

The objective of this study was to evaluate and extend pipeline risk assessment methodology for deepwater pipelines in areas of uneven seabeds. Study objective included:

Task 1: Evaluation of Data Quality Objectives for Furrow Regions

Task 2: Development of Approximate Method for Analyzing Pipeline Risk in Furrow Regions.

The objective of this study was to provide guidance for a testing framework that would not compromise the reliability and safety of future HIPPS installations in the Gulf of Mexico. The study provided guidance on the allowable (if any) leakage rates and developed recommendations on HIPPS test configurations that would mitigate concerns over practical limitations to testing.

The objective of this study was to assess the presence and condition of marine growth on floating facility riser systems in the Gulf of Mexico and practices used for inspection, removal and mitigation.