Novel Approach To High Water Cut Measurement In A Mature Oil Field Abu Dhabi SPE 2008
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Presentation on the optimization of water cut measurements for crude oil reserves in mature fields that have very high water cut values. Traditional volumetric methodologies cannot accurately measure water cut measurements when the water cut is greater than 90%. This methodology demonstrates that gravimetric techniques can be used to measure water cuts as they approach 100% to provide valid data for assessing production.
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Novel Approach To High Water Cut Measurement In A Mature Oil Field Abu Dhabi SPE 2008
- 1. SPE 117354 - Novel Approach To High Water Cut Measurement In A Mature Oil Field Presented in Abu Dhabi, SPE Conference Nov 3-6, 2008 Court Sandau, PhD, P.Chem Jevins Waddell, C.E.T. Tony Berthelet P.Eng, PMP http://www.onepetro.org/mslib/servlet/onepetropreview?id=SPE-117354-MS
- 13. Method Precision Measured Water - Cut (%) b) Haru 16 (5,534 bbls/day) 87.2 87.2 82.0 84.0 86.0 88.0 90.0 0.08% a) Camaal 75 (975 bbls/day) 78.5 78.2 77.0 78.0 79.0 80.0 81.0 0.41% Measured Water - Cut (%) 0.15% Gravimetric Water Cut (%) – Density Corrected Relative Percent Difference (RPD) LEGEND
- 14. Method Precision Measured Water - Cut (%) Measured Water - Cut (%) c) Haru 18 (1,518 bbls/day) 89.5 89.7 87.0 89.0 91.0 93.0 95.0 0.14% d) Heijah 39 (14,406 bbls/day) 98.4 98.4 95.0 97.5 100.0 0.002% 0.15% Gravimetric Water Cut (%) – Density Corrected Relative Percent Difference (RPD) LEGEND
- 16. Precision Comparison Measured Water - Cut (%) Measured Water - Cut (%) 0.15% Gravimetric Water Cut (%) – Density Corrected Volume Water Cut (%) Relative Percent Difference (RPD) LEGEND b) Haru 16 (5,534 bbls/day) 87.2 83.9 86.9 87.2 82.0 84.0 86.0 88.0 90.0 0.08% 3.51% a) Camaal 75 (975 bbls/day) 78.5 78.2 80.0 77.6 77.0 78.0 79.0 80.0 81.0 0.41% 3.05%
- 17. Precision Comparison Measured Water - Cut (%) Measured Water - Cut (%) d) Heijah 39 (14,406 bbls/day) 96.2 98.5 98.4 98.4 95.0 97.5 100.0 0.002% 2.36% 0.15% Gravimetric Water Cut (%) – Density Corrected Volume Water Cut (%) Relative Percent Difference (RPD) LEGEND c) Haru 18 (1,518 bbls/day) 88.6 93.9 89.5 89.7 87.0 89.0 91.0 93.0 95.0 0.14% 5.81%
- 19. Cost of Error Measured Water - Cut (%) Measured Water - Cut (%) b) Haru 16 (5,534 bbls/day) 87.2 83.9 86.9 87.2 82.0 84.0 86.0 88.0 90.0 0.08% $384 3.51% $16,602 a) Camaal 75 (975 bbls/day) 78.5 78.2 80.0 77.6 77.0 78.0 79.0 80.0 81.0 0.41% $312 3.05% $2,340 0.15% Gravimetric Water Cut (%) – Density Corrected Volume Water Cut (%) Relative Percent Difference (RPD) RPD Water Cut as Cost ($) – $100/bbl LEGEND $312
- 20. Cost of Error Measured Water - Cut (%) Measured Water - Cut (%) d) Heijah 39 (14,406 bbls/day) 96.2 98.5 98.4 98.4 95.0 97.5 100.0 0.002% $31 2.36% $33,134 c) Haru 18 (1,518 bbls/day) 88.6 93.9 89.5 89.7 87.0 89.0 91.0 93.0 95.0 0.14% $188 5.81% $8,045 0.15% Gravimetric Water Cut (%) – Density Corrected Volume Water Cut (%) Relative Percent Difference (RPD) RPD Water Cut as Cost ($) – $100/bbl LEGEND $312
- 24. Questions Court D. Sandau, PhD, PChem Senior Chemist Chemistry Matters Email: csandau@chemistry-matters.com Web: http://www.chemistry-matters.com