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5.4 Improved and enhanced recovery

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Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 23–25, 2018
Paper Number: URTEC-2902837-MS
... approach, accuracy of the simulation models for predicting the potential incremental oil production through CO2 EOR in unconventional tight oil reservoirs has been improved. The simulation results of the single-fracture stage model showed incremental recovery factors ranging from 0.6% to 5.4%. The...
Proceedings Papers

Paper presented at the SPE EOR Conference at Oil and Gas West Asia, March 26–28, 2018
Paper Number: SPE-190459-MS
... Abstract Enhanced oil recovery (EOR) applications are strongly recommended and required in Sultanate of Oman to maintain stable oil production levels. Thermal EOR is of particular importance in view of the abundance of heavy, viscous oil within many field clusters in the Sultanate. The selected...
Proceedings Papers

Paper presented at the Canadian International Petroleum Conference, June 16–18, 2009
Paper Number: PETSOC-2009-023
... reservoirs. The effect of heterogeneity on Enhanced Gas Recovery (EGR) in a system containing two non-communicating intervals was investigated with two parallel 2 m sand-packs of 5.4 and 2 Darcies (D). Methane was recovered by injection of either CO2, or flue gas from this heterogeneous system. The effect of...
Journal Articles
SPE Reservoir Evaluation & Engineering 24 (01): 1–18.
Paper Number: SPE-200324-PA
Published: 10 February 2021
...Randall S. Seright; Kathryn E. Wavrik; Guoyin Zhang; Abdulkareem M. AlSofi Summary The goal of this work was to identify viable polymers for use in the polymer flooding of high‐temperature carbonate reservoirs with hard, saline brines. This study extensively examined recent enhanced‐oil‐recovery...
Journal Articles
Journal: SPE Journal
SPE Journal (2020)
Paper Number: SPE-203831-PA
Published: 09 September 2020
...Lei Zhang; Cheng Jing; Nasir Khan; Yanlong He; Xiaoyu Gu; Liming Zheng Summary As development of low-permeability oil reservoirs continues to increase, it urgently needs an efficient enhanced oil recovery (EOR) technology to adapt to the new situation and requirement of oilfield exploitation...
Proceedings Papers

Paper presented at the 54th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2020
Paper Number: ARMA-2020-1035
...). Comparison of CO2 and Nitrogen Injection at Low Temperatures in High Temperature Reservoirs for Improving Oil Recovery. Society of Petroleum Engineers. doi:10.2118/182892-MS 24. Hamdi, Z., Awang, M., Bataee, M., & Vatanparast, M. (2017, May 5). Proposing Low Temperature CO2 for Enhancing Miscibility in High...
Proceedings Papers

Paper presented at the International Petroleum Technology Conference, March 26–28, 2019
Paper Number: IPTC-19488-MS
... from the two trial wells indicate that DHWD technique can significantly improve the EUR by 110% and 871%. Downhole water drain is a groundbreaking technique that can be practically implemented to enhance gas recovery of bottom-water-drive gas reservoirs. This technique is recommended for gas field as...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 30–October 2, 2019
Paper Number: SPE-196036-MS
... surface. enhanced recovery Brine DEM waterflooding concentration interface elasticity functional molecule interfacial viscoelasticity surfactant water injection Upstream Oil & Gas salt concentration salinity injection Oil Recovery water management adsorption elasticity aqueous...
Proceedings Papers

Paper presented at the SPE Heavy Oil Conference-Canada, June 11–13, 2013
Paper Number: SPE-165430-MS
... and good blocking capacity for high permeability zones, polymer/gel enhanced foam flood has been proven as an efficient method to improve oil recovery. This paper presents an optimization study of the slug size of polymer enhanced foam (preformed foam) and a study of gel-enhanced foam on oil recovery...
Journal Articles
Journal: SPE Journal
SPE Journal 24 (03): 1139–1153.
Paper Number: SPE-190168-PA
Published: 05 April 2019
...S. B. Fredriksen; Z. P. Alcorn; A.. Frøland; A.. Viken; A. U. Rognmo; J. G. Seland; G.. Ersland; M. A. Fernø; A.. Graue Summary An integrated enhanced‐oil‐recovery (EOR) (IEOR) approach is used in fractured oil‐wet carbonate core plugs where surfactant prefloods reduce interfacial tension (IFT...
Proceedings Papers

Paper presented at the SPE Kingdom of Saudi Arabia Annual Technical Symposium and Exhibition, April 23–26, 2018
Paper Number: SPE-192425-MS
... Abstract Low salinity waterflooding has recently gained more attention in carbonate formations mainly due to the cost effectiveness of this improved oil recovery technique. Despite all the recent work in this area, the underlying mechanism is still controversial, making field implementation...
Journal Articles
SPE Reservoir Evaluation & Engineering 22 (01): 61–77.
Paper Number: SPE-184163-PA
Published: 25 August 2018
... successfully shown to combine with polymer to increase oil recovery, in addition to lowering the polymer concentration. This favorable synergy will reduce chemical-consumption costs and improve recovery to enhance EOR-project economics. 8 11 2016 29 8 2017 11 8 2017 25 8 2018 6 12...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 23–25, 2018
Paper Number: URTEC-2902813-MS
.... The data generated by this test support the findings of past lab studies which indicate that diffusion may play a significant role in the use of CO 2 for enhanced oil recovery (EOR) in the Bakken. enhanced recovery BHP flowback period Injection Rate Upstream Oil & Gas co 2 injection...
Proceedings Papers

Paper presented at the Abu Dhabi International Petroleum Exhibition & Conference, November 13–16, 2017
Paper Number: SPE-188476-MS
... higher concentrations. The main objective of this approach is to optimize the concentrations and pH of the EDTA chelating agent solutions prepared in undiluted seawater for better oil recovery and improved injectivity using sandstone core samples. Coreflood tests at 100°C were conducted using Gray Berea...
Proceedings Papers

Paper presented at the SPE Annual Caspian Technical Conference and Exhibition, November 1–3, 2017
Paper Number: SPE-189001-MS
.... However, 1/3 non-absorbing reservoir and the invalid circulation of injection water lead to low production rate, high water cut, big flooding difference and low sweep efficiency. To reduce water channeling, the Microbial Enhanced Oil Recovery (MEOR) test was initialed in Fuyu oilfield, China, in 1992. A...
Journal Articles
Journal: SPE Journal
SPE Journal 23 (01): 34–47.
Paper Number: SPE-179627-PA
Published: 28 June 2017
...Krishna Panthi; Kishore K. Mohanty Summary Many carbonate reservoirs have natural fractures that reduce the sweep efficiency of displacement processes. The goal of this study is to improve oil recovery by reducing fluid bypassing caused by fractures, especially in carbon dioxide (CO 2 ) floods. The...
Proceedings Papers

Paper presented at the SPE Health, Safety, Security, Environment, & Social Responsibility Conference - North America, April 18–20, 2017
Paper Number: SPE-184414-MS
.... The potential for recycled gas enhanced oil recovery (EOR) is being investigated as a method of reducing flaring through utilization. However, large-scale gas flooding might be difficult for the Bakken because of the difference between the low-permeability matrix and the highly conductive hydraulic...
Proceedings Papers

Paper presented at the SPE Europec, December 1–3, 2020
Paper Number: SPE-200611-MS
... range of viscosity ratio ( R μ = μ o μ p from 2 to 18) which correspond to end-point mobility ratios of 0.5 and 5.4, respectively. Corefloods results show as expected, that the polymer is more efficient in terms of oil recovery when viscosity ratio is low. In line with polymer...
Journal Articles
Journal: SPE Journal
SPE Journal 23 (01): 66–83.
Paper Number: SPE-179672-PA
Published: 04 August 2017
... viscosity shear-thinning behavior fraction optimal microemulsion shear rate enhanced recovery microemulsion oil-viscosity ratio salinity surfactant microemulsion Texas oil recovery microemulsion viscosity cosolvent University The design of a chemical flood involves key aspects such as...
Proceedings Papers

Paper presented at the SPE Oil and Gas India Conference and Exhibition, April 4–6, 2017
Paper Number: SPE-185326-MS
... Abstract Worldwide partially hydrolyzed polyacrylamides (HPAM) are preferentially used for polymer-based enhanced oil recovery (EOR) processes, due to cost-competiveness. However in recent past several reports suggested that there are certain issues associated with treatment of produced water...

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