The Seven Deadly Sins

The Wages of Sin

The Oilfield: Hell on Earth

The Nightmare Team

7 Deadly Sins of Corrosion Prevention

The Sins Listed

#1 Blissful Ignorance

DefinitionFalse confidence based

on a lack of knowledge.

Corrosion

Prevention

Sin

Not understanding the

details of the corrosion

service.

Not So Blissful?

If ignorance is

bliss, why aren’t

there more

happy people?

False Confidence

DefinitionFalse confidence based

on a lack of knowledge.

“Ignorance more frequently

begets confidence than

does knowledge”.

Charles Darwin

What You Don’t Know

I can’t tell you

anything about the

well conditions, but

we need your

equipment to last 20

years!

Factors in Oilfield Corrosion

Why Well Information is Needed

The Data is Out There (Sometimes)

What

are you

drilling

into?

How to Avoid Sinning

#2 Breaking Bad

DefinitionTo go wrong, make bad

decisions

Corrosion

Prevention

Sin

Using the wrong material

for the application.

Epic Bad Decisions

For a million dollars,

Correctly identify the

biggest mistake of 2016!

Making Bad Choices

“When people have too

many choices, they

make bad choices”.

Thom Browne

Challenge of Material Selection

Carbon Steel

Low Alloy Steel

Martensitic Stainless Steel

Austenitic Stainless Steel

Duplex Stainless Steel

Super Duplex

Super Austenitics

Nickel-Base CRA’s

Incre

asin

g C

ost

Incre

asin

g T

em

pera

ture

and P

ressure

Incre

asin

g C

O2, H

2S

, and C

hlo

rides

$$$

$

The Three E’s

Under Spec or Over Spec?

Unrealistic ExpectationsI need a material that

resists all forms of

corrosion, is strong

and tough, and

doesn’t cost too

much

Material Selection Criteria

CRITERION SPECIFIC FACTORS

StrengthMinimum Strength per API

Minimum Design Strength

Corrosion ResistanceEnvironmental Factors (temperature, pressure)

Corrosive Species (CO2, H2S, Cl-, O2)

Service TemperatureLow Temperature

Elevated Temperature

OtherWear Resistance

Weldability

SupplyCost

Availability

Material Selection Process

Don’t Go It Alone

Material

Vendor

Your BFF

How to Avoid Sinning

#3 Unnatural Relations

Definition Relationships contrary to the

laws of nature.

Corrosion

Prevention

Sin

Placing dissimilar metals in

contact leading to galvanic

corrosion.

One Day in the Hereafter

Trouble in Circle 8, Boss!

Trump is campaigning to

make Hell great again and

Hillary has set up an

unauthorized email server!

I knew we

shouldn’t have

put those two

next to each

other!

Bad Neighbors

“When people have too

many choices, they

make bad choices”.

Thom Browne

“Can’t we all

just get

along?”

Rodney King

And don’t sit

Grandma next to

Uncle Joe. He

smacks his food

and it drives her

nuts.

Unfriendly Neighbors

http://www.browncorrosion.com

Galvanic Series

Potential for Galvanic Corrosion

Mitigation Methods

How to Avoid Sinning

#4 Asleep at the Wheel

Definition Not paying attention.

Corrosion

Prevention

Sin

Failing to notice changes in

the environment or other

parameters that can alter

corrosion behavior.

Quote

Rip Van Winkle Syndrome

What the..??! I’ve been

asleep for 20 years?!!

Things Change

Reservoir Changes

Upstream Changes

Need for Corrosion Monitoring

“The key to controlling corrosion, without

throwing metallurgy at the problem, is the

ability to capture accurate data in real

time, detecting and closing the corrosion

window before significant damage occurs.”

James Speight

“The key to controlling

corrosion, without

throwing metallurgy at

the problem, is the

ability to capture

accurate data in real

time, detecting and

closing the corrosion

window before

significant damage

occurs.”

James Speight

I have a simple

corrosion prevention

strategy – make

everything out of

nickel-base alloys

Benefits of Corrosion Monitoring

.

Know What’s Going On

Corrosion Monitoring Methods

Caveats for Weight Loss Coupons

Test Location Selection Factors

From “Corrosion Monitoring in the Oil & Gas Industry” by Dr. Gareth Hinds.

How to Avoid Sinning

#5 Making Allowances

DefinitionOverconfidence, neglecting to

consider possible problems.

Corrosion

Prevention

Sins

Concentrating on general

corrosion.

Trusting solely in corrosion

allowances.

Ignoring localized corrosion

and galvanic corrosion.

Pride Goeth Before a Fall

“Overconfidence

precedes

carelessness”.

Toba Beta

Corrosion Allowance

Corrosion

Allowance

Pits are Dangerous!

Properly Use Corrosion Allowance

How to Avoid Sinning

#6 Devil in the Details

DefinitionSmall things that are

overlooked can cause serious

problems later on.

Corrosion

Prevention

Sins

Failing to design with

corrosion in mind.

Overlooking the effects of

secondary factors.

Focus Problem

Design Against Corrosion

Consider Secondary Factors

How to Avoid Sinning

#7 Comedy of Errors

Definition

Corrosion

Prevention

Sin

get others involved.

A situation made amusing by

bungling and incompetence.

Human errors in design,

manufacture, installation, and

operation that lead to an

increase in corrosion.

To Err is Human

“When people have too

many choices, they

make bad choices”.

Thom Browne

“One of the most

dangerous forms

of human error is

forgetting what

one is trying to

achieve.”

Paul Nitze

Mr. Coyote, the

ACME Corporation

alleges that your

injuries were

caused by your

own incompetence

in using its

products.

Probability of Corrosion Failure

Errors: Start to Finish

How to Avoid Sinning

The Seven Deadly Sins Reviewed

Questions?

Thank You

References Eskridge, Chip and DuPont, James. “Avoid Costly Materials Mistakes.” Chemical

Processing. Special Report.

Kirby, Gary. “Avoid Common Corrosion Mistakes for Better Performance,” Chemical

Engineering Progress, April 1,1997.

Elmahdy, Mahmoud. “Human Error as a Factor in Corrosion Failure.”

corrosionpedia.com. Accessed 14 January 2017.

Brondel, Denis. et al. “Corrosion in the Oil Industry.” www.slb.com/~/media/Files/

resources/oilfield_review/ors94/0494/composite.pdf. Accessed 17 January 2017.

Speight, James G. Oil and Gas Corrosion Prevention: From Surface Facilities to

Refineries. Gulf Professional Publishing, 2014.