An Integrated Workflow of IOR/EOR Assessment in Oil Reservoirs

Chen, Peila; Balasubramanian, Sriram; Bose, Sushanta; Alzahabi, Ahmed; Thakur, Ganesh

doi:10.4043/28726-ms

Cited by 3 publications

(3 citation statements)

References 12 publications

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“…Their screening table also included low salinity water flooding. Chen et al 2018 provided an integrated workflow to screen, rank, and evaluate different EOR and IOR scenarios for a candidate reservoir. They reported an algorithm to rank reservoirs based on the recovery factor and GOR.…”

Section: Screen and Methodology Selectionmentioning

confidence: 99%

“…This advanced approach is coupled with geological and geophysical characterizations to assess the EOR methods considering ten parameters as mobility ratio, minimum miscibility pressure, bubble point pressure, oil rate, active oil producers vs. cumulative oil production, WOR vs. cumulative oil production, water injection, and production rate history, initial and current GOR, initial and current reservoir pressures, reservoir pressure history, and commercial worldwide EOR projects. Both initial and advanced reservoir ranking algorithms can be found in Chen et al (2018).…”

Section: Screen and Methodology Selectionmentioning

confidence: 99%

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Strategy for Optimum Chemical Enhanced Oil Recovery Field Operation

Bigdeli

Delshad

2023

JRR

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IntroductionThe primary source of energy is still fossil fuels which need to be managed properly. Energy consumption is the main motivation behind various hydrocarbon recovery techniques. In general, primary, and secondary techniques of production can result in 20-40% of conventional oil production in place (Nwidee et al. 2016, Thomas 2008, and Muggeridge et al. 2014). As a result, the residual oil will be extracted using various technologies known as Enhanced or Improved Oil Recovery (EOR, or IOR). EOR technologies are classified into three types: thermal, chemical, and gas/solvent injection. Because of the physics of porous media, the trapping and mobilization of crude oil can be difficult to grasp. The underlying physics includes factors, such as high interfacial tension, temperature, oil viscosity, capillary pressure, and complex rock-fluid and fluid-fluid interactions. Injecting chemicals into the reservoir will change the initial equilibrium state of the hydrocarbon fluids, potentially resulting in the mobilization of trapped oil. According to (Machale www.resrecov.com HIGHLIGHTS ➢ A comprehensive review of traditional and novel hybrid CEOR methods. ➢ Provide different methodologies to screen and rank CEOR methods. ➢ Review of experimental workflow for CEOR and scale up methodologies from lab scale to field pilot.

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Section: Screen and Methodology Selectionmentioning

confidence: 99%

Section: Screen and Methodology Selectionmentioning

confidence: 99%

Strategy for Optimum Chemical Enhanced Oil Recovery Field Operation

Bigdeli

Delshad

2023

JRR

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“…Although polymer flooding offers an extensive variety of recovery mechanisms and shows remarkable success in field applications, it comes with some considerable technical and economic challenges. First of all, polymer flooding projects require significant planning and testing for successful field implementation, e.g., laboratory investigations, pilot tests and reservoir simulations [ 10 , 16 , 32 , 33 , 34 ].…”

Section: Introductionmentioning

confidence: 99%

On the Role of Polymer Viscoelasticity in Enhanced Oil Recovery: Extensive Laboratory Data and Review

et al. 2020

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Polymer flooding most commonly uses partially hydrolyzed polyacrylamides (HPAM) injected to increase the declining oil production from mature fields. Apart from the improved mobility ratio, also the viscoelasticity-associated flow effects yield additional oil recovery. Viscoelasticity is defined as the ability of particular polymer solutions to behave as a solid and liquid simultaneously if certain flow conditions, e.g., shear rates, are present. The viscoelasticity related flow phenomena as well as their recovery mechanisms are not fully understood and, hence, require additional and more advanced research. Whereas literature reasonably agreed on the presence of these viscoelastic flow effects in porous media, there is a significant lack and discord regarding the viscoelasticity effects in oil recovery. This work combines the information encountered in the literature, private reports and field applications. Self-gathered laboratory data is used in this work to support or refuse observations. An extensive review is generated by combining experimental observations and field applications with critical insights of the authors. The focus of the work is to understand and clarify the claims associated with polymer viscoelasticity in oil recovery by improvement of sweep efficiency, oil ganglia mobilization by flow instabilities, among others.

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Rule-Based Systematic EOR Screening Methodology for ADNOC Oil Reservoirs

Mogensen

Al-Keebali

2019

Day 2 Tue, November 12, 2019

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Many of the oil reservoirs in ADNOC’s portfolio have been producing for decades and continue to deliver their target rates, thanks to development schemes centred on pressure support from peripheral water injection and/or crestal gas injection, where applicable, or from line-drive patterns. As these reservoirs mature, a number of enhanced oil recovery (EOR) techniques are being evaluated to increase the ultimate recovery factor. Choosing one or several appropriate EOR methods starts with a robust screening methodology, which in this case has to apply across an entire reservoir portfolio, rather than just to a single asset. The key objective of the screening efforts presented in this paper is to estimate the EOR potential from each reservoir in a systematic manner to allocate the right resources, to the right fields, at the right time, with the right technology. Therefore, the screening methodology must take into consideration the following aspects: The focus of the screening is on identifying opportunities, which are or will become technically feasible by the time deployment is requiredThe screening procedure must remain sufficiently high-level to be able to deliver an outcome within a short time-frameA single EOR method is not necessarily applicable across an entire reservoir; hence several EOR methods can potentially be implemented in the same reservoir but in different areasThe thought process (workflow) has to be properly documented so that the screening exercise can be updated whenever new technologies or new relevant field data become available The new EOR screening tool considers more EOR methods compared to previous screening efforts: It takes a much broader view on potential source gas options for miscible gas injection, namely enrichment of sweet hydrocarbon gas, sour gas streams, CO2 with or without impurities, as well as nitrogen for some high-temperature reservoirs containing volatile oil. This step involved estimating miscibility conditions for hundreds of combinations of injection gas compositions and reservoir fluids using equation-of-state based MMP calculations in addition to common MMP correlations.The reservoirs are all carbonate formations and are characterized by high temperature and high salinity. These conditions have traditionally been a challenge for chemical EOR methods involving polymers and surfactants. However, recent R&D progress has opened up for opportunities not previously considered. Both polymer and foam agents are currently being piloted, which have the potential to change the EOR landscape in Abu Dhabi and perhaps elsewhere as well.As reservoirs mature and breakthrough of injection fluids begin to occur, the need for improved reservoir conformance becomes evident. The success of any EOR technique relies on the right well placement with the right monitoring in place and the right level of injection profile control.

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An Integrated Workflow of IOR/EOR Assessment in Oil Reservoirs

Cited by 3 publications

References 12 publications

Strategy for Optimum Chemical Enhanced Oil Recovery Field Operation

Strategy for Optimum Chemical Enhanced Oil Recovery Field Operation

On the Role of Polymer Viscoelasticity in Enhanced Oil Recovery: Extensive Laboratory Data and Review

Rule-Based Systematic EOR Screening Methodology for ADNOC Oil Reservoirs

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