Single Subsea Tie-back Well Offshore Equatorial Guinea

The next MTS Houston Section luncheon will be held on 2nd December 2010 and will feature a presentation by Tor Gavem, Hess Corporation on the Akom North G-19 Single Subsea Tie-back Well offshore Equatorial Guinea. The single subsea tie-back well, called as ‘Akom North G-19 well' is located approximately 2.79-miles North from Okume ‘E' TLP (also referred as Oveng TLP). The water depths at the G-19 well and Okume ‘E' TLP are approximately 1,175ft and 890ft, respectively.

The subsea architecture consists of a single 4-inch ID insulated flexible that will initiate at Okume "E" TLP and terminate at subsea (i.e. at Akom North G-19 well) utilising a dual-hub PLET piping and associated rigid jumper. One hub is designated to connect a rigid flowline jumper to the wellhead tree and other hub is for future developments. The single flexible flowline will be used to transport the production oil. The subsea controls will be provided using an electro-hydraulic umbilical. The maximum total production oil rate from this field is estimated to be 6,000 BFPD with Water Cuts (WC) varying from 0 to 50% and gas lift rates varying from 0 to 3.5 MMSCFD.

The discussion will focus on the design elements, challenges in working with existing facilities, and the execution philosophy and procurement strategy.

Tor Gavem is responsible for Subsea Projects in Golf of Mexico and West Africa for Hess Corporation. Tor started with Hess in 2006 and has been project manager for several projects related to Hess Operations in Equatorial Guinea and projects in Gulf of Mexico. Prior to his career with Hess, Tor worked for Wellstream and Technip. Born in Skien, Norway, Tor received a Bachelor of Science degree in Ocean engineering in 1998 from the Florida Atlantic University. In 2002, he received the Professional Engineer License in Mechanical Engineering in 2004.

For more information, or please contact Liz Stansfeld, MTS Publicity, 6913 Poncha Pass, Austin, TX 78749.Telephone: +1 512.301.2744, email: lizstansfeld@earthlink.net.