Monitoring Produced Water: Case Study Challenges and Successes [email protected] [email protected].

Monitoring Produced Water: Case Study Challenges and

Successes

www.envirotechsystems.com

www.advancedsensors.co.uk

[email protected]@envirotechsystems.com

17327 Norwell DriveCovington, LA 70435Phone: 985-809-6480

Presentation by: Gerard Cooke

History• Major Oil Company in the GoM was facing

issues with water treatment equipment at multiple facilities

• Existing monitoring equipment not working satisfactorily

• One of the facilities was issued an NPDES discharge violation after a sheen resulted from an overnight equipment failure

• Looking for ways to improve the water treatment process and early detection

Challenges

• Know what is going on!

• Make changes and improvements

• Trust the data

• React to what is known

• Use data to make process control decisions

• Automate the process

Reliability and Trust

Cleaning

• Cleaning has always been a major problem with monitors

• “Oil in water monitors do not work”

• Customer was not convinced monitor could automatically clean

• Over time trust was built up with automatic cleaning leading to less and less lab samples

glass clean_med2.wmv

Equipment Selection• Factors to

Consider

• Reliability

• Dependability

• Monitoring at Multiple Points in the System

• Side-Stream vs In-Line

Installation

Early Data

Later Installations

Data• Graph represents 17 months of data for discharge (Oct ‘11 – Feb

‘13)

0 5 10 15 20 25 30 35 40 45 500

2

4

6

8

10

12

14

16

18

Gravimetrics Vs. OIW Analyzer

Lab GravimetricsAdvanced Sensor

Number "By Month"

PPM

Val

ue

SuccessesZero Noncompliance Violations Since

Installation • Since the monitors have been

deployed in the Gulf of Mexico, the oil company has had zero NPDES violations

• Similar configuration now deployed on 7 platforms in GoM with more to follow in 2013

Conclusion

• Monitoring multiple locations not only insures no violations but provides early detection indicators and cost saving

• Cost saving not only from zero violation but also from process monitoring i.e. chemical usage optimisation

www.envirotechsystems.com

www.advancedsensors.co.uk

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