BHP Billiton pursues water injection at Shenzi

BHP Billiton Petroleum has awarded Stress Subsea a contract for designing the water injection system for the Shenzi field development in Gulf of Mexico Green Canyon Blocks 609, 610, 653, and 654.

Guntis Moritis
OGJ Production Editor

HOUSTON, Apr. 2 -- BHP Billiton Petroleum (GOM) Inc. has awarded Stress Subsea Inc. a contract for designing the water injection system for the Shenzi field development in Gulf of Mexico Green Canyon Blocks 609, 610, 653, and 654.

The four-part work scope of the contract covers engineering and project management for the subsea hardware, umbilicals, risers, and flowline systems.

BHP Billiton announced on Mar. 25 that oil and gas production had commenced from the Shenzi tension leg platform (TLP), which has a nominal 100,000 bo/d and 50 MMcfd gas processing capacity.

The Shenzi TLP is in 4,300-ft of water in Block GC 653 about 120 miles off Louisiana. BHP Billiton notes this water depth for a TLP is the second deepest in the world.

The initial project development includes seven subsea wells tied back to the TLP, with BHP Billiton expecting full field development to have 15 producing wells and future water injection wells.

Crude oil export is via an Enterprise Products Partners LP 83 mile, 20-in. pipeline connected to Ship Shoal 332 B junction platform, while natural gas export is via the Cleopatra pipeline in which BHP Billiton has a 22% equity share.

The 20-in. oil pipeline has a 230,000 b/d capacity and from Ship Shoal 332 B oil can enter the Enterprise-operated Cameron Highway oil pipeline and Poseidon oil pipeline systems.

Operator BHP Billiton has a 44% share of Shenzi. Partners in Shenzi are Hess Corp. and Repsol E&P USA Inc., each with 28%.

Contact Guntis Moritis at guntism@ogjonline.com.

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