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Medusa

Medusa is a deepwater subsea tie-back development in the Gulf of Mexico, producing oil and gas through a host facility. First production began in the early 2000s. The development consists of subsea wells tied back to a nearby platform, with no standalone surface production facility.

Operator: Murphy Exploration & Production

Status: Online

Medusa platform photo

Image Source: Murphy Exploration & Production (All rights belong to the original owner.)

Production: Oil & Gas

Operations start: 2003

Water depth: 678 m

Country: USA - New Orleans District

Block: MISSISSIPPI CANYON 60. Block 582

Type: Spar

Field

The Medusa Field is located in the Mississippi Canyon area of the Gulf of Mexico. Reservoirs are deepwater Miocene sandstones. The field is relatively modest in scale and was developed as a subsea tie-back to reduce capital costs while leveraging existing processing infrastructure in the region.

Facilities

The Medusa development comprises multiple subsea wells equipped with subsea trees and connected via flowlines to a host platform. A subsea manifold system gathers production and routes it through a single export flowline. The host facility performs separation, oil stabilization, gas compression, and water treatment. Oil and gas are exported via the host's pipeline systems into regional Gulf of Mexico infrastructure. Subsea control is achieved through electro-hydraulic umbilicals, enabling remote operation and monitoring. The system may include water injection wells for reservoir support. The design emphasizes simplicity and reliability, with minimal surface infrastructure and reliance on existing processing and export capacity.

Medusa layout
Image Source: "Shell Sees Volumes on Mars Oil Pipeline System Rise in First Quarter" - Pipeline & Gas Journal [https://pgjonline.com/] (All rights belong to the original owner.)

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