Produced Water Testing

Produced water or formation water is a term used in the oil industry to describe water that is created as a by product along with the oil and gas during exploration and production. It is either re injected into the well or discharged as surface waters. Because produced waters are likely to contain oil and metals, they need to be treated prior to being discharged. Testing is therefore carried out for toxicity and cannot exceed set discharge rates. 

Physical and chemical properties of produced waters tend to vary depending on well location, type of hydrocarbon produced, temperature and pressure. Because the properties also change over time, produced water can lead to scaling, paraffin formation and pH changes. When in contact with oxygen, produced water can also result in iron compounds deposition and elemental sulphur.

Why test:

To avoid plugging of wells
To avoid scaling of lines, valves and orifices
To prevent corrosion due to acid gases
To ensure the produced water is within consent range (monitoring)
To avoid the growth of bacteria that plug lines and valves 

Tests usually carried out on produced waters include: 

• PH  
• Chloride
• Total Petroleum Hydrocarbons
• Salinity
• Total suspended solids
• Total Dissolved solids
• Bicarbonate
• Conductivity/resistivity
• Specific gravity
• Oil and grease
• Dissolved metals
• Total Iron
• Anions
• Total and dissolved sulphide
• Volatile Fatty acid profile
• Trace Mercury
• Sulphate reducing bacteria
• Unknown compound identification

Latest News

Testing for Performance Specification of Asphalt Binders (M1-A)

The NZTA M1-A specification sets out the performance characteristics to be met by the binders used for asphalt manufacture, which will replace the previous NZTA M1 specification. IPL has worked with NZTA, Suppliers and customers to gain a good understanding of this new specification and has expanded its Bitumen testing capability to meet the suppliers and customers new M1-A testing requirements.
 Read More

Sustainable Coastlines: Valuable Workshop for IPL's Community Team

Just about every week the media have a storyline on the issues surrounding single use plastic. This is of particular interest for IPL’s Community Team and we thought we’d get the experts of Sustainable Coastlines to come into our workplace and put our team through their workshop. 
 Read More

2018 WITT Taranaki Science and Technology Fair

Another year full of successful project entries for the WITT Taranaki Science and Technology Fair. Our lovely Pam Chung attended the event and also helped judge the projects on display. Pam was truly amazed by the level of detail and the precision of the scientific processes followed by some of the participants. “I thought the kids did a great job at noting down and presenting evidence of their work at each step of their investigation”. It was great to hear back from Pam about how impressed she was by the thoroughness of some of our scientists in making. Read More