Polymer Distribution Concepts for Large Scale Polymer Floods in the Sultanate of Oman: Simplicity or Flexibility?
- Safa Al Baqlani (PDO) | Suresh Kumar Singh (PDO) | Gerard Glasbergen (Shell Global Solutions International BV) | Harry van Elk (Shell Global Solutions International BV)
- Document ID
- Society of Petroleum Engineers
- SPE EOR Conference at Oil and Gas West Asia, 26-28 March, Muscat, Oman
- Publication Date
- Document Type
- Conference Paper
- 2018. Society of Petroleum Engineers
- 5.3.6 Chemical Flooding Methods (e.g., Polymer, Solvent, Nitrogen, Immiscible CO2, Surfactant, Vapex), 5.5 Reservoir Simulation, 4.3.4 Scale, 5.5.3 Scaling Methods, 5.4 Improved and Enhanced Recovery, 5.4 Improved and Enhanced Recovery, 5 Reservoir Desciption & Dynamics
- Flexibility, EOR, polymer, degradation, Shear
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- 131 since 2007
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Enhanced Oil Recovery (EOR) is firmly established in the hydrocarbon maturation plans of PDO and Shell. Particularly polymer flooding is a proven and established method for hydrocarbon recovery. An important step in maturing polymer flood implementation is the upscaling from a successful pilot to field scale. One of the elements in the upscaling process is the distribution of polymer solution to the different polymer injectors. A fundamental choice is whether flexibility in operations is required to optimize the Well Reservoir and Facilities Management (WRFM) of a polymer flood or the simplest surface concept should be selected. This paper describes the rationale for making a choice for a distribution concept.
The current experience in polymer flooding shows that the value of having WRFM capabilities is substantial. In this paper we evaluate the value of WRFM regarding polymer injection. Choices such as the need for varying polymer concentrations per injector and changing the duration of a polymer injection scheme are evaluated. The impact of the regrets for not having the ability to manage the polymer injection are quantified and the probability on the necessity of these aspects of WRFM in a large-scale field is determined based on the experience in an ongoing polymer flood in the South of Sultanate of Oman. Examples are shared that underpin the variance in response form pattern to pattern. Besides the value of WRFM capability, a large number of different concepts for polymer distribution are evaluated based on value, costs and feasibility of implementation and operation. Yard tests were performed to quantify the effect of mechanical shear degradation of low and high concentration polymer to underpin eventual value loss of the polymer.
The value of having WRFM capabilities in a polymer flood is clearly articulated and confirmed from the analysis of polymer field data. Large pattern by pattern variations in polymer injectivity and polymer upsides will lead to the decision that the flexibility to turn of polymer injection and reverting to water injection in some injectors is a necessity. A new concept that combines flexibility and simplicity with limited number of moving parts has proven to be feasible and cost effective. The feasibility of the concept is articulated by the positive results of yard tests that show that high concentrations polymer solutions have limited shear degradation.
Upscaling from pilot to field scale EOR flood is complex. The structured and integrated approach using both surface and subsurface capabilities combined with actual field performance data and supporting experimental data is novel. The limited amount of shear degradation of a mother solution opens a large number of additional concepts that combine simplicity and flexibility. The concept is not only applicable for onshore fields but also enables implementation of polymer flood in an offshore subsea environment.
|File Size||791 KB||Number of Pages||9|
Al-Sulaimani, H., Al-Rawahi, Z., Quesada, C. V.,Al-Ghannami, M., Frumau, M., Al-Hussaini, A., Syed, M. (2017). Baseline Establishment for a Polymer Flood Pilot Test in an Unconsolidated Sandstone Reservoir in the South of the Sultanate of Oman. Paper SPE 188408. Presented at the Abu Dhabi International Petroleum Exhibition & Conference, Abu Dhabi, UAE, 13-16 November 2017. doi:10.2118/188408-MS
A. Anand,H. Al-Sulaimani,O. Riyami,A. Kindi, Success and Challenges in Ongoing Field Scale Polymer Flood in Sultanate of Oman - A Holistic Reservoir Simulation Case Study for Polymer Flood Performance Analysis & Prediction. Presented at the SPE EOR Conference at Oil and Gas West Asia held in Muscat, Oman, 26-28 March 2018. SPE- 190431-MS.
Bhaumik, P., & Mohanram, S. (2014). Challenges in Surface Facilities Implementation" for a full field Polymer Flood Project. Society of Petroleum Engineers. doi:10.2118/169709-MS
Jouenne, S., Chakibi, H., & Levitt, D. (2017). Polymer Stability After Successive Mechanical-Degradation Events. Society of Petroleum Engineers. doi:10.2118/186103-PA
Mohanram, S., Bhaumik, P., & Jain, S. (2016). Challenges During Execution, Construction and Operational Readiness Phase of Surface Facilities in a Full Field Polymer Flood Project. Society of Petroleum Engineers. doi:10.2118/181615-MS
Stoll, W. M.,al Shureqi, H., Finol, J., Al-Harthy, S. A. A., Oyemade, S. N.,de Kruijf, A., Faber, M. J. (2011). Alkaline/Surfactant/Polymer Flood: From the Laboratory to the Field. Society of Petroleum Engineers. SPERE Vol 1406, 2011 doi:10.2118/129164-PA
Volokitin, Y., Shuster, M., Karpan, V., Mikhaylenko, E., Koltsov, I., Rakitin, A., Podberezhny, M. (2017). West Salym ASP Pilot: Surveillance Results and Operational Challenges. Society of Petroleum Engineers. SPE 187838. Presented at the SPE Russian Petroleum Technology Conference, 16-18 October, Moscow, Russia. doi:10.2118/187838-MS
Zaitoun, A., Makakou, P., Blin, B.. 2011. Shear Stability of EOR Polymers. Presented at the SPE International Symposium on Oilfield Chemistry, The Woodlands, Texas, 11-13 April. SPE-141113-MS. https://doi.org/10.2118/141113-MS.