Oil&Gas
Morpeth Field
2017-12-21 15:00  点击:1
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Project Profile


Value: US$100 million (development cost)
Location: Gulf of Mexico Ewing Bank (EW) blocks 921, 964 & 965, offshore Louisiana, USA
Start-up year: 1995
Reserves (2P): 66 million bbl oil and 67 billion ft³ gas
Water depth: 518 m /1,700 ft

The Morpeth field was developed by British Borneo and then passed to Eni. Following the successful testing of Morpeth well EW 965 no 1, proven and probable reserves were upgraded to 66 million bbl oil and 67 billion ft³ gas (totalling 77 million boe, and representing an increase of 50% over the previous estimate). Upside reserves potential is estimated at around 92 million boe. Furthermore, a production test of the main \'P\' sand reservoir led to a planned production rate of 35,000 bpd oil, rather than the 25,000 bpd oil originally envisaged. The crude oil recovered on test from the main reservoir interval was 32° API with a 1.6% sulphur content.

Processed crude oil and natural gas is exported from the Morpeth platform via a 12in oil-export line and an 8in gas-export line to the Grand Isle 115 platform. The Grand Isle 115 platform lies in 366ft (112 m) of water near the continental shelf margin, 19 miles from Morpeth. The pipeline system was designed to handle throughput volumes of twice the Morpeth peak production rates. From Grand Isle 115, the oil continues through the main Amberjack pipeline system to the Clovelly onshore terminal in Louisiana. The gas and gas liquids will go through Texaco\'s Discovery pipeline system. The deepwater drilling rig Ocean Endeavor was used to drill three production wells and a water-injection well. The export lines for gas and oil consist of a steel catenary riser.

Production from three subsea wells is flowed via individual flow lines for processing on the SeaStar mini TLP. Separated oil and gas is sent to GI 115 by steel catenary risers and pipelines. The facility provides full hydrocarbon processing for 40,000 bopd and 43 mmcfd (1 mmcmd) gas and 30,000 bopd water injection.

The field is the first TLP without surface completions, first deepwater diver-less pipeline side taps in the Gulf of Mexico and first coiled tubing access of subsea production system from surface TLP.

McDermott was project manager, designer, engineer and installer of the facility, making it the first designed, procured and installed subesa system in the Gulf of Mexico and the first designed and installed steel catenary risers by them.

Operator:

Eni: Operator with 100% interest

Contractors:

McDermott: Project manager, designer, engineer and installer of the SeaStar mini TLP
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