Electrical Heating — Doing the Same Thing Over and Over Again …

Ali, S.M. Farouq; Bayestehparvin, Bita

doi:10.2118/189724-ms

Cited by 11 publications

(7 citation statements)

References 78 publications

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“…Thermal recovery methods are enhanced oil recovery (EOR) techniques based on the reduction of the viscosity due to heat transfer. This heat transfer can come from the injection of a hot fluid, such as steam [3] or it can be produced internally (in situ combustion [4] or electric heating [5]). Steam assisted gravity drainage (SAGD) [3] is the most used thermal recovery method and it consists of injecting steam into the reservoir in such a way that it develops a hot zone that heats the oil until its viscosity is low enough so that it flows under the effect of gravity (Figure 1).…”

Section: Introductionmentioning

confidence: 99%

Reducing the Energy and Steam Consumption of SAGD Through Cyclic Solvent Co-Injection

2019

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The amount of oil that is contained in the Canadian oil sands represent the third largest oil accumulation in the world. Approximately half of the daily oil production from the oil sands comes from mining processes and the other half is produced mostly using steam assisted gravity drainage (SAGD). This method is effective at reducing the viscosity of the oil. However, the generation of steam requires a significant amount of energy. Thus, there is an ongoing effort to reduce the energy needed to produce oil from the oil sands. In this article the intermittent injection of a solvent, along with steam, is investigated as a means of reducing the amount of energy required to extract oil from the Canadian oil sands. A simulation-based study examined the effect of the type of solvent, the cycles’ duration, the solvent concentration and the number of cycles. The simulations covered a time span of 10 years during which several different solvents (methane, ethane, propane, butane, pentane, hexane, and CO2) were injected under varying injection schedules. The solvents that were investigated are compounds that are likely to be readily available at a heavy oil production site. The solvent injection periods ranged from six to 24 months in length. The results reveal that SAGD combined with intermittent injection of hexane resulted in the most significant improvement to the cumulative oil production and in the cumulative energy-oil ratio (cEOR). Compared to SAGD without solvent injection, the cumulative oil production was increased by 45% and the cEOR was reduced by 23%. It was also seen that the performance of the proposed process is highly dependent on the resulting physical properties of the solvent-bitumen mixture. Finally, a simplified economic analysis also identified SAGD with intermittent hexane injection as the scheme that resulted in the highest net present value. Compared to SAGD without solvent injection, the intermittent injection of hexane led to an 85% increase in the net present value.

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Section: Introductionmentioning

confidence: 99%

Reducing the Energy and Steam Consumption of SAGD Through Cyclic Solvent Co-Injection

2019

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“…For instance, SAGD requires on average between 15 and 30 MW of energy, which is at least 20 times the energy required for a heated element in a 1000 ft horizontal section. 9…”

Section: Resultsmentioning

confidence: 99%

“…Even though the heating element approach is not as effective as SAGD, it requires much lower capital and operational investments. For instance, SAGD requires on average between 15 and 30 MW of energy, which is at least 20 times the energy required for a heated element in a 1000 ft horizontal section …”

Section: Resultsmentioning

confidence: 99%

“…Another family of thermal EOR utilizes electric current to directly heat a formation. This group includes resistive, radiofrequency, and inductive heating . Their impact on incremental recovery is not as significant as that of traditional methods, but they provide a means of enhancing productivity in situations where capital investments are unattainable or technical implementation of typical thermal EOR is impractical (e.g., offshore wells).…”

Section: Introductionmentioning

confidence: 99%

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Artificial Lift and Mobility Enhancement of Heavy Oil Reservoirs Utilizing a Renewable Energy-Powered Heating Element

2019

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The improvement of heavy oil recovery by steam injection or electric heating has been investigated extensively. However, the potential benefit of placing a permanent heating element around the pay zone has not received significant attention. Previously, numerical models were mainly used to investigate improvements in reservoir fluid mobility but rarely when considering the impact of downhole heating on a wellbore’s vertical lift performance. In this study, a coupled mass and heat transfer model was developed and applied to a reservoir/wellbore system to investigate the impact of a heating element on recovery improvement. The numerical simulations showed that heat propagation due to the heating element did not exceed 10–15 ft while the reservoir’s fluids were being produced. However, much longer distances could be reached through heat conduction under shut-in conditions. It was determined that more than a 40% improvement in the productivity index could be achieved at low production rates. However, no productivity improvement was noticed under convection-dominated heat transfer, which occurs at relatively high production rates. A heating element could also reduce the flowing bottomhole pressure required in a wellbore by more than 200 psi, a result caused by a continuous temperature increase as the fluids flowed into the heated wellbore section.

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“…Combination of hydrocarbon and sand could absorb large amounts of heat, and the microwave could rapidly heat them as well as temperature up to 300-400 ℃ (Rehman & Meribout, 2012;Taheri-Shakib et al, 2017a). The applications of microwave heating have been applied in the Suncor oil field, Alberta, which resulted in the production of synthetic crude whose composition was similar to the real crude oil (Ali & Bayestehparvin, 2018).…”

Section: B High Frequency (Microwave Heating)mentioning

confidence: 99%

The Prospect of Electrical Enhanced Oil Recovery for Heavy Oil: A Review

Afdhol

Erfando

Hidayat

et al. 2020

J. earth energy eng.

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This paper presents a review of electrical heating for the recovery of heavy oil which the work adopts methods used in the past and the prospects for crude oil recovery in the future. Heavy oil is one of the crude oils with API more than 22 which has the potential to overcome the current light oil crisis. However, high viscosity and density are challenges in heavy oil recovery. The method is often used to overcome these challenges by using thermal injection methods, but this method results in economic and environmental issues. The electrical heating method could be a solution to replace conventional thermal methods in which the methodology of electrical heating is to transfer heat into the reservoir due to increasing oil mobility. Because the temperature rises, it could help to reduce oil viscosity, then heavy oil will flow easily. The applications of electrical heating have been adopted in this paper where the prospects of electrical heating are carried out to be useful as guidelines of electrical heating. The challenge of electrical heating is the excessive heat will damage the formation that must be addressed in the prospect of electrical heating which must meet energy efficiency. The use of Artificial intelligence becomes a new technology to overcome problems that are often found in conventional thermal methods where this method could avoid steam breakthrough and excessive heat. Therefore, it becomes more efficient and could reduce costs.

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Electrical Heating — Doing the Same Thing Over and Over Again …

Cited by 11 publications

References 78 publications

Reducing the Energy and Steam Consumption of SAGD Through Cyclic Solvent Co-Injection

Reducing the Energy and Steam Consumption of SAGD Through Cyclic Solvent Co-Injection

Artificial Lift and Mobility Enhancement of Heavy Oil Reservoirs Utilizing a Renewable Energy-Powered Heating Element

The Prospect of Electrical Enhanced Oil Recovery for Heavy Oil: A Review

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