8:00 A.M. – 9: 30 A.M. SESSION 4 - LIFE OF FIELD LESSONS LEARNED / Moody Ballroom
Chair: Eric Hevle, Development & Production Manger GoM; Ecopetrol America, Inc.
Co-Chairs: Mike Ellis, VP of Subsea Projects; Oceaneering International, Inc.
Lisa Winfrey, Subsea Engineering Service Leader, Baker Hughes, a GE Company
Topacio Manifold Repair & Flowline Hydrate Remediation
Cory Edds, Subsea Engineer; ExxonMobil
In 2015 the Topacio Manifold failed due to several dissimilar metal weld failures and production was shut in. After various concepts
were evaluated to reinstate production of this manifold, an unconventional solution was chosen which consisted of designing &
fabricating one off custom clamps to patch the leaks. This clamping effort was completed successfully in 2016, however while the
manifold sat idle for the year water ingressed to the flowline and created a hydrate which has prevented startup. Hydrate remediation
efforts are currently ongoing, specifically by utilizing accumulator bottles to drain production fluids from the manifold reducing
pressure of the hydrostatic head on the blockage.
Cory Edds has 10+ years with ExxonMobil and is currently an Operations Technical Subsea Engineer for ExxonMobil Production
Company located in Malabo, Equatorial Guinea. His responsibilities include maintaining & repairing the Zafiro field’s aging subsea
infrastructure, assessing short and long term facility integrity risks, ROV planning & scheduling, as well as identifying small to medium
sized subsea project opportunities the production unit can execute independently. Cory joined ExxonMobil Development Company in
2007 and holds a Bachelor of Science degree in Mechanical Engineering from Rose-Hulman Institute of Technology.
Dealing with Late Life Operations
Akshay Mohikar, Flow Assurance Engineer; BP
As a growing number of mature oil and gas field facilities approach the end of their design life, late-life management is critical to
ensure their continued safe and profitable operation, particularly in low oil price, high-operating cost environments. Given the number
of years that this asset has been in production, managing late life challenges has been fundamental to achieve acceptable operational
performance, maximize the potential of the facility and extend the economic viability of the asset. This presentation will highlight the
main strategies and upgrades that have been implemented in recent years to manage operational issues associated with a mature oil
field, as well as some of the lessons learned while dealing with declining production rates and changing fluid conditions.
Akshay Mohikar currently works as Flow Assurance engineer for BP. He is part of the Flow Assurance team that supports GoM assets.
Leak Detection in GoM Deepwater Subsea Production Systems Using Conditional Rate of Change
Han Hsien Seah, Leak Detection Program Manager; Shell
Subsea leak detection in multiphase systems is challenging due to the complex PVT behavior, and very limited installed base of subsea
flowmeters at many legacy subsea fields. Conditional Rate of Change (C-RoC) was developed to enable rapid and reliable detection of
large leaks using existing pressure sensor data, in combination with smart logics. The leak signature is filtered from multiple pressure
data streams throughout the subsea field, and will raises an operator alarm and/or automatically initiate a field shutdown if warranted.
This presentation will discuss this simple and effective solution for enabling rapid and reliable rupture detection on most, if not all,
subsea production systems.
Han Hsien Seah is the Leak Detection Program Manager for Shell’s GoM Upstream Deepwater organization.
9: 30 A.M. – 10: 30 A.M. COFFEE BREAK – Exhibit Hall
THURSDAY, MARCH 15, 2018