DOT 2008 highlights

Listed below are just some of the highlighted papers for DOT in Houston.

Listed below are just some of the highlighted papers for DOT in Houston.

A full conference preliminary program can be found by visiting our website at:

Multiphase Flow Assurance Design for Long Gas-Condensate Pipelines – Field Experience and Uncertainty Assessment
Gunnar Flaten – Statoil ASA

The design of long gas-condensate pipelines aims to optimize the transport
of the produced fluids to a processing plant. The design process involves balancing hydraulic capacity and multiphase flow assurance issues, such as liquid management and hydrate condensates.

Evaluation of Landslide Impact on Deepwater Submarine Pipelines Chiara M.Traverso – D'Appolonia S.p.A.

The push of the petroleum industry into ever greater water depths has led
to a tangible increase in project geohazards. One of the most significant hazards on the continental shelf is submarine landslides

Techniques for Detection of Water Intrusion in Pipelines and Hydrates Using Radioisotopes
Scott Vidrine – Tracerco

The paper will discuss the use of radioisotopes in detecting the presence of water intrusion into new pipelines, the intrusion of water into the outer jacket of a pipe-in-pipe design, and hydrate detection.

Deepwater Advancements – Technology and Operational Needs
and Development in the Past and for the Future

Baljit Singh – Repsol YPF E&P

Over the past few decades technology advancements have been made for water depths in excess of six to eight times of that envisaged in the early/late 1990s.

Integrity Management and Life Extension of Flexible Pipe
Tim O'Sullivan – MCS

During 2002, MCS authored: "Monitoring Methods & Integrity Assurance for Unbonded Flexible Pipe" for UKOOA. Since 2002 lessons have been learnt in terms of the management and operation of flexible pipes.

Pipeline Inspection at 7,000 ft.
Leith McDonald – Lloyds Register

In 2006 BP US Pipelines and Logistics commissioned a baseline ROV survey of the Mardi Gras Pipelines, with many techniques and technologies being utilized for the first time in the Gulf of Mexico.

Taking SCR's Deeper – Qualification of Nickel-Based Welds for Deepwater Steel Catenary Risers
Mark Crawford – ExxonMobil Development Company

Steel catenary risers and offloading lines have limited lifetime expectancies due to fatigue critical regions containing girth welds. If girth weld fatigue performance is improved to combat the deleterious effects of fatigue, enhanced girth welds can be improved.

Qualification of High Strength Solutions to Improve Fatigue Performance of Deepwater Steel Catenary Risers
Rajiv Aggarwal – Granherne, Inc.

This paper presents the design development and qualification work undertaken in a JIP during 2004 to 2007, for two out of total four fatigue design solutions for Steel Catenary Riser (SCR) Touch Down Zone (TDZ).

Carbon Fiber and High-Strength Steels: Future Directions for Material Selections in Deepwater Risers and Flowlines
Neal Prescott – Fluor Corporation

As more oil and gas reservoirs are discovered in deepwater in all parts of the world, significant challenges are presented in material selection, design, and installation methods of subsea pipelines and risers with respect to thermal insulation.

Surface BOP Operations from a Multi-Service Vessel
Colin Johnston – Helix Energy Solutions Group

The Q4000 multi-service vessel is converted to accommodate surface BOP, high pressure riser and subsea shut off device for drilling and completion operations. The system incorporates a 16" high-pressure riser system to enable slimbore completion.

Development of a New Carrier-Conveyed Sampler with Improved Reliability and Safety in HPHT Environments
Cyrus Irani – Halliburton

A significant aspect of any well test operation is the recovery of representative bottomhole samples. This can be done in an openhole environment using wireline formation tester tools or in a cased-hole environment using tubing-conveyed samplers.

Solid Expandable Tubulars Help Turn Marginal Wells into Significant Producers
Cameron Radtke – Enventure Global Technology

Originally thought primarily as a contingency technology to mitigate downhole challenges, solid expandable tubulars are now being applied as enabling systems in wellbore construction, in field development, and for well and field revitalization.

Evolution of Hybrid Riser Towers for Ultra Deepwater in the Gulf of Mexico
Jean-Francois Saint-Marcoux – Acergy

There is a rapidly increasing interest within the O&G industry for field development in ultra deep waters of the Gulf of Mexico (3000 m or more). For a number of the discoveries, the produced fluid is at high pressure and temperature.

Optimized Materials Selection for High Integrity Subsea Systems
E. J. Wright – ExxonMobil Development Company

Key to the success of many offshore project developments is the design, fabrication and installation of optimized subsea systems. The systems include wellheads and trees, well tubulars, manifolds, jumpers, flowlines and pipelines.

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