Tight Oil Impact on Desalter Operations

Transcription

1 1 Tight Oil Impact on Desalter Operations COQA Meeting New Orleans 8 November 2012 Dennis Haynes

2 2 Sourcing of Hydrocarbon

3 3 Variability of Hydrocarbon Two samples of Eagle Ford API 45 and API 57 Variations of tight oil samples Brown, Yellow, Green, and Orange

4 4 Potential Issues Around the Desalter

5 5 Gravity Settling Settling Factor A basic start to the discussion Sf ( ρ - ρ ) = w o μ Sf = Ability of a droplet to settle through another phase ρ w = Density of water (brine) ρ o = Density of the oil μ = Viscosity of the oil

6 Gravity Settling 6

7 Gravity Settling 7

8 Gravity Settling 8

9 Gravity Settling 9

10 10 Interfacial Tension

11 Water Drop Evaluation 11

12 12 Water Drop Evaluation 90 degrees C 3500V for 8 min at outset

13 13 Droplet Diameter and Mixing Energy Stokes Law V = K D 2 Sf V D K Sf = Relative velocity of water droplet falling through oil = Diameter of water droplet = Constant = Ability of a droplet to settle through another phase Mix Valve Optimization

14 14 Additive Impacts Discussed at AFPM 2012 P&P Session and 3 rd Opportunity Crudes Conference

15 15 Amine Impacts Elevation of Brine effluent ph experienced due to amines observed during operations Minimization of Wash Water ph Optional technique Lordo, S. A., Garcia, J. M., Garcia-Swofford, S. Desalter Acidification Additives and Their Potential Impacts on Crude Units, NACE Paper 08556

16 16 Bakken Crude Analysis Test Results API 60 F 42.1 Karl Fischer Water % Solids ASTM 110 PTB Acid Number 0.1 Chlorides (Cl) 40 ppm

17 17 Bakken Crude Analysis Element ppm Aluminum (Al) 0.02 Barium (Ba) 0.02 Calcium (Ca) 0.54 Chromium (Cr) 0.01 Cobalt (Co) <0 Copper (Cu) <0 Iron (Fe) 0.7 Magnesium (Mg) 0.05 Manganese (Mn) 0 Molybdenum (Mo) <0.1 Nickel (Ni) 0.05 Potassium (K) 0.1 Sodium (Na) 2.8 Strontium (Sr) 0.03 Titanium (Ti) <0 Vanadium (V) 0.02 Zinc (Zn) 1.1

18 18 Bakken Related Deposit Element Weight % C 32.1 O 38.4 Na 0.4 Al 0.4 S 6.1 Cl 0.1 K 0.2 Ca 0.5 Sr 7.4 Ba 14.3

19 19 Bakken Related Deposit Element Weight % C 30.3 O 16.8 Al 0.2 S 4.9 Cl 1.1 I 1.7 Pb 44.9

20 20 Eagle Ford Crude Analysis Test Results API 60 F 58.0 Karl Fischer Water % Solids ASTM 22 PTB Acid Number <0.1 Chlorides (Cl) 23 ppm

21 Eagle Ford Crude Analysis 21 Element ppm Aluminum (Al) 0.33 Barium (Ba) 0.21 Calcium (Ca) 9.8 Chromium (Cr) <0.02 Cobalt (Co) <0.1 Copper (Cu) 0.07 Iron (Fe) 2.3 Magnesium (Mg) 0.34 Manganese (Mn) <0.02 Molybdenum (Mo) <0.6 Nickel (Ni) <0.14 Potassium (K) 0.5 Sodium (Na) 12 Strontium (Sr) 1.5 Titanium (Ti) <0.4 Vanadium (V) <0.05 Zinc (Zn) 0.25

22 22 Stability Index Analysis

23 23 Stability Index Analysis CSI Value

24 24 Stability Index Analysis CSI Values of Cold Lake / Eagleford Blends CSI Value

25 25 Interface and Effluent

26 26 Asphaltene Impact on Brine

27 27 Asphaltene Stabilizer (EF:CL 50:50) Blank Stabilizer A 1x 2x 4x Stabilizer B 1x 2x 4x Stabilizer C 1x 2x 4x

28 28 Key items Desalter optimization Crude stability testing High ph tolerant demulsifier Asphaltene stabilization Via blending Via stabilizer Solids removal

29 29 Acknowledgements Sam Lordo Keith Gawrys Paul Lindemuth Michael Braden John Garcia Jeffery Hubbard Tannon Woodson Brad Mason Kailash Sawhney Disclaimer: The contents of this document are, to the best of our knowledge, accurate at the date of publication. We shall not be liable for any loss or damage whatsoever resulting from reliance on its contents. All warranties as to fitness for purpose or otherwise (howsoever made or implied) in respect of this publication are excluded.