New Deepwater, High-Pressure GOM Tubular Maximizes Capability, Reduces Cost

Topics: Completions HP/HT Offshore
Source: Getty Images.

A 2-year comprehensive effort to design, test, manufacture, and deploy a new high-pressure completion tubular (CT) for Chevron’s deepwater Gulf of Mexico (GOM) operations is presented. The completion application expected harsh, aggressive loading modes and high pressures to be encountered. The major challenge was to design, test, and manufacture a subsea-completion string that would provide efficient hydraulics during fracturing operations while ensuring mechanical and pressure integrity.


In 2004, the first built-for-purpose CT incorporating a gas-tight, rotary-shouldered connection was developed and deployed in the GOM. Since that time, rotary-shouldered connections have evolved (this evolution is described in detail in the complete paper). Present-day connections offer improved performance, increased torsional capacity, and improved hydraulics, and have created slimmer profiles. Additionally, running and handling characteristics have been improved, providing faster makeup, reduced trip time, and decreased repair cost because of reduced connection damage. However, the need remained to incorporate these technological advancements and benefits into a second-generation CT.

This article, written by JPT Technology Editor Chris Carpenter, contains highlights of paper SPE 173034, “New Deepwater, High-Pressure Completion Tubular for Gulf of Mexico Maximizes Combined-Load Capability While Incorporating Proven Cost-Saving Features,” by T. Anderson, C. Fontenot, and R. Davey, Chevron; J. Dugas and B. White, Quail Tools; K.A. Hamilton, C-FER Technologies; and P.S. Beauchamp, L.C. Karlapalem, A. Muradov, and J. N. Brock, NOV Grant Prideco, prepared for the 2015 SPE/IADC Drilling Conference and Exhibition, London, 17–19 March. The paper has not been peer reviewed.
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New Deepwater, High-Pressure GOM Tubular Maximizes Capability, Reduces Cost

01 June 2016

Volume: 68 | Issue: 6