Chemical Engineering August 2018 - 52

Feature Report
Integrity of Aging Assets:
Using Corrosion Data
to Stave Off Extinction
Petroleum refineries built in the 1960s and 1970s have trouble dealing with the corrosive
effects of modern feedstocks. Continuous monitoring of corrosion can prevent process
equipment failures
Emerson Automation Solutions
Christiane
Lederer
Emerson Automation
Solutions
IN BRIEF
CHANGING RESOURCES
ASSETS AT RISK
SEEKING SOLUTIONS
A
ging assets
that are past
their original
design life are
becoming an increasingly
stark problem for
the global oil-and-gas
industry. In fact, mature
assets currently
account for more than
70% of global oil-andgas
production.
When the oil and
gas fields these assets
were designed
to use as feedstock
were first discovered,
enhanced oil recovFIGURE
1. Aging refineries are now dealing with highly corrosive feedstocks
ery techniques, such as thermal recovery,
hydraulic fracturing, and gas- or chemicalinjection
technologies had not yet been
employed. With the evolution of technology,
operators have been able to increase
the volumes of recoverable reserves from
around 20 to up to 70%. However, oil and
gas produced using these modern extraction
methods often present corrosion and
other problems.
Many operators today are dealing with
mature assets installed in the 1960s and
1970s (Figure 1) with an original design life of
around 20 years. Having now been in operation
for more than double that time, they're
at the highest risk point of their lifecycle.
When faced with this scenario, operators
need a strong defense to maintain safe,
economic production. This is especially true
when facing one of aging assets' greatest
threats: corrosion.
50
Corrosion in the oil-and-gas industry is
caused by contaminants in produced hydrocarbons
that, over time, lead to deterioration
of pipe and vessel walls. And it's a
growing problem. Experts at NACE International
(Houston; www.nace.org), the global
corrosion authority, put the total annual cost
of corrosion in the oil-and-gas industry at
$1.372 billion. Loss of equipment integrity
can result in unplanned downtime and
costly repairs, or in the worst case, an incident
posing major risk to personnel, the
environment and stakeholder value.
Aging assets
When building new greenfield assets, corrosion
is a problem that can be addressed
from the beginning. But when operating
brownfield assets, it's a problem that needs
to be addressed after the fact in an operating
facility. Operators are being faced with a situCHEMICAL
ENGINEERING WWW.CHEMENGONLINE.COM
AUGUST 2018

http://www.nace.org http://WWW.CHEMENGONLINE.COM

Chemical Engineering August 2018

Table of Contents for the Digital Edition of Chemical Engineering August 2018

Contents
Chemical Engineering August 2018 - Cover1
Chemical Engineering August 2018 - Cover2
Chemical Engineering August 2018 - Contents
Chemical Engineering August 2018 - 2
Chemical Engineering August 2018 - 3
Chemical Engineering August 2018 - 4
Chemical Engineering August 2018 - 5
Chemical Engineering August 2018 - 6
Chemical Engineering August 2018 - 7
Chemical Engineering August 2018 - 8
Chemical Engineering August 2018 - 9
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Chemical Engineering August 2018 - Cover3
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