GDF Suez prepares Cygnus field development

Uchenna Izundu
International Editor

LONDON, Feb. 16 -- GDF Suez is preparing a field development plan for the first phase of Cygnus gas field in the southern UK North Sea after testing 32 MMscfd of natural gas from the deeper Carboniferous reservoir with appraisal well 44/12a-3. The well is 6 km east-northeast of the previous Cygnus well 44/12a-2. The flow was constrained by equipment.

The well, drilled to 12,433 ft TD, is located 6 km east-northeast of the previous Cygnus well 44/12a-2. It confirmed the presence of gas in both primary and secondary reservoir intervals. The likely reserves of the secondary reservoir are believed to be more than 100 bcf of gas.

Jean-Marie Dauger, executive vice-president of GDF Suez in charge of global gas and LNG, said success of the appraisal well "confirms a sizeable northward extension for Cygnus. It also provides a very solid commercial foundation for what is likely to be one of the larger UK southern North Sea developments in recent years."

GDF hopes to sanction the development plan later this year with first gas for 2010-11 from estimated gross incremental reserves over 100 bcf. Subsequent development of Cygnus will depend on the results of the second appraisal well and field performance.

The company wanted to prove the presence of the Leman reservoir in the eastern part of the field, to assess reservoir quality and fluid content of the primary Leman reservoir, and to test the deeper Carboniferous reservoir as a secondary target.

"A well test was also performed on the Leman reservoir, which flowed at low rates in line with predrill expectations," said Venture Production PLC, a partner in the field.

The Noble Ronald Hoope jack up rig drilled appraisal well 44/12a-3, which encountered a gas water contact consistent with Fault Block 1 thereby confirming predrill estimates of gas in place volumes. The quality of the Leman reservoir was as per predrill expectations, while the Carboniferous reservoir interval substantially exceeded expectations.

The partners will drill another appraisal well 8 km northwest of 44/12a-3 to test another fault block in the northeastern part of the field once it has completed this one.

Cygnus is a large multifault block accumulation within UKCS Blocks 44/12a and 44/11a near the Caister Murdoch System (CMS) area.

Mike Wagstaff, chief executive of Venture Production, said that Venture believes Cygnus is one of the southern North Sea's largest undeveloped gas fields. "In 2009 we have a very active drilling campaign especially in the southern North Sea, and this is a great start to what should be an exciting year."

GDF Suez has a 38.75% interest with Venture Production holding 48.75% and Endeavour Energy UK Ltd. holding 12.5%.

Contact Uchenna Izundu at uchennai@pennwell.com.

Related Articles

Apache awarded Western Australia offshore permit

12/18/2014 A day after reporting its planned divestment of Western Australian and Canadian assets to Woodside Petroleum Ltd., Apache Corp. has been awarded a ...

Thirty-one House Democrats ask Jewell to bar leasing in Arctic Ocean

12/18/2014 US Rep. Jared Huffman (D-Calif.) and 30 other House Democrats urged US Interior Sec. Sally Jewell to reject the second supplemental environmental i...

Obama makes Alaska’s Bristol Bay off-limits for oil, gas activity

12/17/2014 US President Barack Obama placed Bristol Bay off-limits for future oil and gas leasing, extending a temporary withdrawal he imposed in 2010 that wa...

Cooper to buy 50% of offshore Gippsland Sole gas field

12/17/2014 Cooper Energy Ltd., Adelaide, has bought a 50% interest in the offshore Gippsland Sole dry gas field in retention lease Vic/RL3 as well as 50% of t...

Repsol to acquire Talisman in $13 billion deal

12/16/2014 Spain’s Repsol SA has agreed to acquire all shares of Talisman Energy Inc. of Calgary for $8.3 billion along with assumed debt of $4.7 billion. The...

Eni reports flow test rates for well offshore Congo (Brazzaville)

12/15/2014 A production test conducted by Eni SPA on the Minsala Marine 1 NFW well offshore Congo (Brazzaville) flowed 5,000 b/d of 41° gravity oil and 14 MMs...

Cook to head DONG Energy E&P group

12/15/2014 David B. Cook has been named group executive vice-president and chief executive officer for exploration and production at DONG Energy, Fredericia, ...

Security takes center stage

12/15/2014

Thwarting terrorists, repelling pirates, and routing organized crime: sounds like themes of familiar, big-budget Hollywood movies.

Frac ban exemption made in Broomfield

12/12/2014 A Colorado District Court judge has ruled that a hydraulic fracturing ban in Broomfield, Colo., does not apply to an operator that entered into an ...

White Papers

AVEVA NET Accesses and Manages the Digital Asset

Global demand for new process plants, power plants and infrastructure is increasing steadily with the ...
Sponsored by

AVEVA’s Approach for the Digital Asset

To meet the requirements for leaner project execution and more efficient operations while transferring...
Sponsored by

Diversification - the technology aspects

In tough times, businesses seek to diversify into adjacent markets or to apply their skills and resour...
Sponsored by

Engineering & Design for Lean Construction

Modern marketing rhetoric claims that, in order to cut out expensive costs and reduce risks during the...
Sponsored by

Object Lessons - Why control of engineering design at the object level is essential for efficient project execution

Whatever the task, there is usually only one way to do it right and many more to do it wrong. In the c...
Sponsored by

Plant Design for Lean Construction - at your fingertips

One area which can provide improvements to the adoption of Lean principles is the application of mobil...
Sponsored by

How to Keep Your Mud System Vibrator Hose from Getting Hammered to Death

To prevent the vibrating hoses on your oilfield mud circulation systems from failing, you must examine...
Sponsored by

Duty of Care

Good corporate social responsibility means implementing effective workplace health and safety measures...
Sponsored by

Available Webcasts


On Demand

Optimizing your asset management practices to mitigate the effects of a down market

Thu, Dec 11, 2014

The oil and gas market is in constant flux, and as the price of BOE (Barrel of Oil Equivalent) goes down it is increasingly important to optimize your asset management strategy to stay afloat.  Attend this webinar to learn how developing a solid asset management plan can help your company mitigate costs in any market.

register:WEBCAST


Parylene Conformal Coatings for the Oil & Gas Industry

Thu, Nov 20, 2014

In this concise 30-minute webinar, participants have an opportunity to learn more about how Parylene coatings are applied, their features, and the value they add to devices and components.

register:WEBCAST


Utilizing Predictive Analytics to Optimize Productivity in Oil & Gas Operations

Tue, Nov 18, 2014

Join IBM on Tuesday, November 18 @ 1pm CST to explore how Predictive Analytics can help your organization maximize productivity, operational performance & associated processes to drive enterprise wide productivity and profitability.

register:WEBCAST


US HYDROCARBON EXPORTS Part 3 — LNG

Fri, Nov 14, 2014

US LNG Exports, the third in a trilogy of webcasts focusing on the broad topic of US Hydrocarbon Exports.

A discussion of the problems and potential for the export of US-produced liquefied natural gas.

These and other topics will be discussed, with the latest thoughts on U.S. LNG export policy.

register:WEBCAST


Careers at TOTAL

Careers at TOTAL - Videos

More than 600 job openings are now online, watch videos and learn more!

 

Click Here to Watch

Other Oil & Gas Industry Jobs

Search More Job Listings >>
Stay Connected