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Recent content by Alexander R.

  1. Alexander R.

    Pumps in produced water treatment

    Thanks for this suggestion to look from this angle into my problem.
  2. Alexander R.

    Pumps in produced water treatment

    Yes, I have read this paper as well. Though would like to mention that similar conclusions were drawn in this paper, which dates back to 1994. https://doi.org/10.2118/28815-MS I'm not sure how you suggest I should use these guidelines to the selection of pump types. For me it seems like these...
  3. Alexander R.

    Pumps in produced water treatment

    I am mainly looking at offshore applications. I agree that most of processing facilities are utilizing the reservoir pressure to avoid additional pumping. However, there are still some stream that need pumping, such as recycling streams. There is a good overview of treatment schematics for...
  4. Alexander R.

    Pumps in produced water treatment

    Standard is NORSOK P-002, section 22 - Oily Water treatment. Standard instructs to use low shear pumps and valves upstream the treatment system to avoid shearing and break-up of oil droplets. Regarding water treatment, you correct in some way about handling it. There are three ways to go: -...
  5. Alexander R.

    Pumps in produced water treatment

    Thanks for the answers. We deviated here slightly from the topic, though. I was wondering if there is a place I could look up some statistcs of pump types used in specific branches/applications.
  6. Alexander R.

    Pumps in produced water treatment

    As I understand there is usually a rag layer of oil that need to be separated. A high shear pump would shatter droplets into the smaller ones, which would be harder to separate in slop tanks or hydrocyclones.
  7. Alexander R.

    Pumps in produced water treatment

    isn't a low RPM and low differential head kind of opposite operating conditions for high hydraulic efficiency? And could you elaborate a bit more why Moyno pumps (and other PD pumps) is "a very bad idea in practice"?
  8. Alexander R.

    Pumps in produced water treatment

    Thank you for the answers. Sorry, if I didnt specify, but I'm looking at produced water treatment in the oilfields. I'm consulting NORSOK standard, and there are couple of places where it instructs to use low shear type pump. But this definition is rather wage, in terms what are the criteria to...
  9. Alexander R.

    Pumps in produced water treatment

    I'm looking for the information about what types of pumps are commonly associated with produced water treatment systems/facilities. I was looking for the information elsewhere, but could not find much. I'm interested to know approximate % of each pump type used for these applications. Thanks...
  10. Alexander R.

    Methanol in crudes

    I can't also speak for downstream. But in upstream, methanol has some negative effect on produced water. - Methanol tends to increase solubility of hydrocarbons in water. Therefore, excessive amount of methanol may increase amount of hydrocarbons that are dissolved in water and are not removed...
  11. Alexander R.

    Undesired emulsification

    It is exactly the current area of Application of our low shear Equipment. The efficiency of the separators depends upon the average droplet size of dispersed phase and the level of emulsification. On offshore platforms produced water is usually processed by hydrocyclones or flotation units. If...
  12. Alexander R.

    Undesired emulsification

    Hi moltenmetal, Yes, I understand now the process of desalting. Nevertheless, effluent water shall carry over some of the oil with it, possibly in form of emulsion. This effluent water requires treatment. As I understood the waste water treatment facilities utilize pumps and valves in order to...
  13. Alexander R.

    Undesired emulsification

    Hi, shvet2008, Thank you for the response. As you mentioned high pressure drop across the valve is a common source for emulsification. Our original application of low shear valves are choke valves and control valve upstream gravity separators in the oil industry. When strong emulsification...
  14. Alexander R.

    Undesired emulsification

    Hi all, I am on the look after the indutries and processes where undesired emulsification can take place. Our Company is developing low shear Equipment, primarly for the oil indsutry, where water and oil form emulsions which require later separation. We want to hear where else Our equipment can...
  15. Alexander R.

    Control valve for polymer transfer

    Thanks for tips. This technology looks interesting. Will try to find out if it is applicable for polymer transfer as well.
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