seawater injection plants

Hi All

I am ​​interesting to ​​know the ​​industry ​​practice for ​​treatment of ​​seawater used ​​for oil well ​​injection. ​​ Can anyone ​​share with me ​​the criteria ​​for technology ​​selection and ​​challenges ​​associated with ​​it.

Best Regards

Anvar Mansuri

Taxonomy

• Treatment Methods
• Produced Water Treatment
• Process
• Clean Tech
• Water Treatment Solutions
• Pretreatment
• Total Dissolved Solids (TDS)
• water treatment

4 Answers

1. Sea Water has a TDS of over 30,000 ppm depending on source body. First is to Deoxygenate it through counter flow with N2 gas. For that you need a Pressure Swing Absorption plant to generate N2 gas. Then you need to pass it through several stages of particle removal with close monitoring using Coulter counter. Then you must treat it with a combination of 25% glutaraldehyde and Isothiazolin 10% combination. Prior to that, the intake sea channel will be having grates to stop marine influx like molluscs, seaweed etc. This part of the treatment is considerably problematic and requires thorough study of that particular marine environment before undertaking biokill measures.

   The treated seawater is pumped through the use of water injection pumps which needs constant monitoring. The water at the injection site has to be tested for SRB growth at site as well as in a secure lab. The fundamental logic is to have deoxygenated water with treatment to restrict/kill any Sulfate-reducing bacteria which will damage the well as well as the steel pipes bringing up the oil through water flooding.  

   2 Comments

   1. Thank you so much, this is very helpful.

   2. https://www.bakerhughes.com/subsea/subsea-production-systems/subsea-power-and-processing/seawater-treatment-and-injection

2. ​​​Treatment of ​​​seawater used ​​​for oil well ​​​injection is separation oil from used seawater for re use injection  or for safe disposal . Which is done by physical separation by filtration , Chemical treatment or electrocoagulation . we offer above 90% recovery of water for reuse by Polymeric membranes most economical sustainable solution . mtplimited@gmail.com    

   2 Comments

   1. Thank you so much, this is very helpful.

   2. Hello Amdy, On the electrocoagulation equipment- what are the voltage required? Is there opportunities for custom transformers? Thank you, Michael Smith, Magnetic Specialties 

3. I suggest having a look at the paper attached . DESALINATION IN THE OIL INDUSTRY - PERFECTING ENHANCED OIL RECOVERY USING OPTIMIZED WATER QUALITY   ... https://ida.memberclicks.net/assets/docs/979.1.pdf and also: https://www.bp.com/en/global/corporate/news-and-insights/press-releases/bp-technology-boosts-oil-recovery-adding-to-potential-energy-supplies.html

   Regards,

   Harry

   NOTE WATER NETWORK RESEARCH HAS ATTACHED THE PAPER TO THIS REPLY

   2 Comments

   1. Thank you so much, this is very helpful.

   2. none of the links work.

       

      1 Comment reply

      1. I have uploaded the one paper to the above answer, , this seems to be the correct BP link https://www.bp.com/en/global/corporate/news-and-insights/press-releases/bp-technology-boosts-oil-recovery-adding-to-potential-energy-supplies.html

          

4. Steam is injected to enhance oil recovery.High TDS waste water including produced water is injected by high pressure pumps into deep well.The project I worked generated steam for injection. 

   1 Comment

   1. Well noted Antony.  Steam injection is one of the several methods used for enhanced oil recovery.  I need to bind my EPC Contractor for the seawater pretreatment side.