Noble Energy and Singapore-based Ezra Holdings’ subsea division EMAS AMC, finalized three subsea tieback contracts worth approximately US$300 million.
|Image from Ezra.|
The scope of work includes engineering, procurement, construction and installation of subsea tiebacks for the Gunflint, Big Bend and Dantzler field developments in the US Gulf of Mexico with more than 130 km of pipe-in-pipe (PiP) flowlines and more than 100 km of umbilicals in water depths up to 7200ft.
The project management, engineering and procurement are currently underway from EMAS AMC’s Houston office with fabrication of the 16 subsea structures, and stalking and spooling of more than 258km of line pipe that are in progress at the EMAS Marine Spool Base facility located in Ingleside, Texas.
Offshore execution is scheduled for 2015, using five EMAS AMC offshore construction vessels including the Lewek Constellation, a newbuild, ultra-high tension, deepwater reel lay and heavy lift vessel.
Noble in the Gulf of Mexico
Noble has several large producing fields, multiple ongoing development projects and additional exploration opportunities in the Gulf of Mexico.
Gunflint, a 2008 discovery, is estimated to contain resources between 65 to 90MMboe. Noble plans for Gunflint to be a two-well tieback to come online in mid-2016.
Big Bend was discovered in 2012 and will initially be a one well tieback. Noble operates Big Bend with a 54% interest with partners W&T Energy ( 20%), Red Willow Offshore (15.4%) and Houston Energy Deepwater Ventures (10.6%).
Map from Noble.
Both the Gunflint and Big Bend developments were sanctioned in 2013 and will provide the next leg of production growth for Noble’s deepwater Gulf of Mexico exploration.
Dantzler is planned as a two-well tie-back, using the Big Bend infrastructure, with initial startup in 2016. In late August, Noble reported the Dantzler-2 appraisal well was drilled to a total depth of 18,210ft in 6600ft of water depth and encountered 122ft net of crude oil pay in two high-quality Miocene reservoirs. Gross resources increased to 65-100MMboe. At that time, the ENSCO 8501 semisubmersible drilling rig had begun well completion operations on Dantzler-2 and was then moving to complete the Dantzler-1 discovery well. Noble Energy operates Dantzler with a 45% interest with partners Ridgewood Energy Corp. (35%) and W&T Energy VI (20%).
Noble says that with an unrisked exploration inventory of over 3 billion boe, they maintain a multi-year inventory of prospects focused on subsalt Miocene and proven amplitude plays and multiple new prospects are targeted annually.
Noble announced a discovery at the Katmai exploration prospect earlier this year, which provides another major project development in the Gulf of Mexico.