Deepwater ///

Seep-hunting in deepwater for prospectivity assessment

Multibeam echosounders and seismic data detect seeps, enhancing exploration.

Shuttle tankers vs. pipelines in the GOM frontier

FPSO developments could create a shuttle tanker service market.

Super-insulating packer fluid minimizes flow assurance concerns

Testing an insulating packer fluid to retain production-tubing heat after shut-in.

Oilwell testing in a GOM long-distance subsea tieback

Combining several operations limits production losses at King and King West Fields.

New Rig Designs: Shell and Frontier joint venture to build the “Bully" drillship

Shell and Frontier will build and roll out a new drillship concept, known as the “Bully” rig.

Drilling fluids and waste management developments expose challenges of advancing technology

Successfully navigating regulatory barriers allows synthetic-based mud to enhance deepwater production.

Deep Panuke first gas in 2010

Vol. 228 No. 11   NOVA SCOTIA CANADA: THE NEXT PLAY Deep Panuke first gas in 2010 In October 2007, EnCana’s Board of Directors sancti

Evaluating Scotian Shelf Deepwater

Vol. 228 No. 11   NOVA SCOTIA CANADA: THE NEXT PLAY Evaluating Scotian Shelf Deepwater Although much work remains to be done,

Using EM seabed logging and deep imaging seismic for deepwater exploration

Vol. 228 No. 11   NOVA SCOTIA CANADA: THE NEXT PLAY Using EM seabed logging and deep imaging seismic for deepwater exploration Exp

Major deepwater development offshore Egypt continues tie-back expansion

A seven-year subsea field development creates expandable architecture in the Mediterranean Sea.

When flow assurance fails: Melting hydrate plugs in dry-tree wells

Transient simulations assisted hydrate remediation efforts in deepwater Gulf of Mexico wells.

Co-development of Spiderman and San Jacinto fields in GOM

A unique partnership has developed from the needs of exploration and production companies and midstream energy companies to facilitate the development of several ultra-deepwater, natural gas discoveries in the eastern GOM, resulting in the Independence Project. Two of the anchor fields for this project are a natural fit for co-development. Five months after Anadarko discovered Spiderman field in November 2003, Eni announced the discovery of San Jacinto field. The proximity of these discoveries to each other along with their distance from the Independence Hub led to a beneficial commercial solution. This paper is an overview of the projects from discovery through development planning to project sanctioning. The Atwater Valley Producers Group: Anadarko Petroleum Corp., Devon Energy Corp., Eni and Hydro Gulf of Mexico along with two midstream companies: Enterprise Products Partners and Helix Energy Solutions Group, have collaborated on a deepwater hub and export pipeline system ...

Deepwater statistical report: Top 10 deepwater producing countries—2000 to 2010

As this chart illustrates, oil and gas production from the top 10 deepwater countries has more than doubled in the last six years. As global demand continues to escalate, this trend is expected to increase sharply over the next few years. Production from the top 10 deepwater producing countries is set to double again, to over 9 million boepd. Looking at the history of the key producing areas, US Gulf of Mexico has been the largest single producing region, since the beginning of the decade. Out to 2010, GOM is projected to continue its number one status, closely followed by Brazil, which will have tripled its production since 2000 and is expected to produce around 2.3 million boepd in 2009 and 2010. It is anticipated that West Africa will continue its rapid deepwater production growth, with Angola and Nigeria collectively expected to produce as much as the US GOM by the end of the decade.

Improved deepwater cementing practices reduce NPT

Over a four-year period, during which some 42 wells were constructed by BP, processes were developed to improve cement slurry design and reduce Non-Productive Time (NPT) during cementing operations on deepwater wells. Cementing best practices have been followed for many years; however, not all of these are applicable to deepwater operations, especially for the riserless sections. This article will review the results of developing slurry design practices, temperature prediction/mud removal modeling, and Subsurface Release Plugs (SRP). The cement blend used can have a profound impact on cost, both in design and supply logistics. As deepwater operations move farther from shore bases, the application of a systems approach should be considered to cover all cement design needs. The challenges vary from shallow water flow potentials to high temperature and pressure. Both conventional and foamed cement slurries can be successfully used when properly designed and placed.

ESP deployed via riser to subsea well

An innovative solution to slugging and liquid loading in the Gulf of Mexico increased well production 150%, and may increase overall recovery by 35%.

Mexico ponders cross-border strategy for deepwater GOM fields

Mexico-US boundary treaty set no agreement for border-field development.

Careful BHA selection, adaptive practices help drill difficult salt

In a deepwater Gulf of Mexico well, real-time drilling data allowed quick action to be taken, to control vibration in an intermediate section.

Deepwater statistical report: Global reserves discovered have decreased, while finding costs increase

Since 2002, the trend has held steady, with over 30 billion boe discovered, although 2006 was an exception, when a number of large finds was made.

Slip-based landing string system expands limit for deepwater casing

A re-engineered system has pushed the lifting limit to 2 million pounds and beyond.

A new depositional model for the deepwater Wilcox-equivalent Whopper Sand—Changing the paradigm

Perhaps the Gulf of Mexico became isolated during the Lower Tertiary, which would explain a series of events that led to deposition of thick, extensive, mostly sandy reservoirs more than 200 mi from shore. These reservoirs are now being explored.

Acquiring low-contamination samples in high-pressure differential reservoirs

To stabilize a GOM wellbore, Eni optimized overbalance and adjusted mud properties, thereby reducing sample acquisition time and rig cost.