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Name: AbdUlRahman Al-Betar
ID: 973206
Place of Training: Saudi Aramco   Company
Department: Research & Development at Environmental Unit(EU)
Project: I.Partition Coefficient
  II. Sewage Treatment
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For
 Formic, Acetic and Propionic Acids in a
Crude Oil/water System
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Is the Ratio of the Concentration of a Chemical Species Adsorbed or Dissolved by One Phase to the Concentration of the Species in the Other Phase.


K = [ Org. Acid in Oil] / [ Org. Acid in Water] (by Mass)
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1. Accelerate the Rate of Corrosion of Well Tabular
2. Souring of Oil Reservoirs Due to Their Consumption by Sulfate Reducing Bacteria (SRB)
3. SRB Proliferate and Block up the Rock Pores in the Reservoir
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Experimental Section:
  • Three variables experiments were used to determine the effects of pH, temperature and organic acid concentration :
  •     1. PH value of  2.0 , 7.0 and 12.0
  •     2. Temperature of   25 , 55  and 70 C
  •      3. High, medium and low levels of acid    concentration
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Determination of Organic Acid Concentration
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Determination of Organic Acid Concentration
  • Withdrawing 5ml of the crud oil after laying RXN
  • 10ml of 0.1M Na2CO3 was added to extract the organic acids from the crude oil(na2co3extraction agent)
  • The reaction involve (acid-base reaction):
  • 2 CH3CO2H + Na2CO3            2 CH3CO2-  Na+  + H2CO3


  • H2CO3            CO2 + H2o
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Determination of Organic Acid Concentration
  • Samples were shacked for 2 hours at 160 osc/min,
  • Finally, the aqueous layer was separated from the crude oil and the aqueous layer analyzed from organic acid by CE
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Experiments  of Crude Oil / Water System
  • 1.     Used Shudgm crude oil and Shudgm formation water.
  • 2.     Used Shybah crude oil and Shybah formation water.
  • 3.     Used Shybah crude oil and Shudgm formation water.
  • 4.     Used Shybah crude oil and Shybah high standard.
  • 5.     Used Shybah crude oil and Shybah medium standard.
  • 6.     Used Shybah crude oil and Shybah low standard.
  • 7.     Used Shybah crude oil and Shybah formation water with ph= 4 by adding 0.1M HCl to the formation water.
  • 8.     Used Shybah crude oil and Shybah formation water with ph= 10 by adding 0.1M NaOH to the formation water.
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Experiments  of Crude Oil / Water System
  • 9.     Used Shybah crude oil and Shybah formation water with ph= 2 by adding 0.1M HCl to the formation water
  • 10.     Used Shybah crude oil and Shybah formation water with ph= 12 by adding 0.1M NaOH to the formation water
  • 11.     Used Shybah crude oil and Shybah formation water, at 70 C to study the effect of temperature
  • Each experiment was done twice for more precision and more accuracy
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Capillary Electrophoresis (CE):
  • A separation technique in which a sample is introduced into a capillary tube and the compounds are separated by high voltage
  • Benefits CE:
  •      1.  Rapid analyses
  •  2.  High efficiency
  •  3.    Low sample consumption
  •  4.   Ease of use
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Capillary Electrophoresis (CE):
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Results
  • All these results were done by CE, which give the concentrations by ppm (mg/l).
  • 1. Shyabah high standard water extract trial 1:
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Results
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Results
  • 2. Shyabah high standard oil extract trial 1:
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Conclusions
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Conclusions
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