A Model to Estimate Heat Efficiency in Steam-Assisted Gravity Drainage by Condensate and Initial Water Flow in Oil Sands

Ji, Dongqi; Zhong, Han; Dong, Mingzhe; Chen, Zhangxin; Jia, Xiaohan

doi:10.1021/acs.iecr.6b03550

Cited by 4 publications

(3 citation statements)

References 41 publications

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“…Laboratory experiment results have demonstrated that the initial water is mobile when the saturation is above 7% at room temperature [63]. The mobile water outside the steam chamber boundary could significantly impact the growth of the steam chamber [64]. In this work, the effects of the initial water mobility on the SAGD ramp-up phase performance were examined by altering the initial water saturation.…”

Section: Effects Of Initial Water Mobility On the Steam Chamber Ramp-...mentioning

confidence: 99%

Numerical Modeling of the Steam Chamber Ramp-Up Phase in Steam-Assisted Gravity Drainage

Lyu³

et al. 2022

Energies

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Due to the critical nature of the ramp-up phase of an efficient steam-assisted gravity drainage (SAGD) process, it is important to understand the physics of the steam chamber ramp-up phase in order to improve SAGD production performance. In conventional numerical simulation models, the dynamics of the steam chamber ramp-up phase are not fully resolved because of unclear steam–oil–water interactions during the vertical growth of the steam chamber and how its state changes as the reservoir parameters vary. This work provides an efficient approach for the numerical modeling of the steam chamber ramp-up phase in an SAGD operation. The steam chamber ramp-up phase was fully examined through the consideration of the effects of the temperature-dependent oil–water–gas multiphase flow system and the vertical countercurrent flow. The simulation results revealed that for the large temperature gradient of the mobile oil zone at the edge of the steam chamber, a delicate temperature-dependent multiphase flow system was essential for the reliable estimation of the SAGD ramp-up phase. The vertical countercurrent flows of oil–gas and oil–condensate were the dominant mechanisms over cocurrent flow, which significantly impacted the steam chamber ramp-up rate. The numerical model physically predicted the steam chamber ramp-up phase and could be used to efficiently compute a field-scale simulation using a dynamic gridding function that was based on a fine grid model.

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Section: Effects Of Initial Water Mobility On the Steam Chamber Ramp-...mentioning

confidence: 99%

Numerical Modeling of the Steam Chamber Ramp-Up Phase in Steam-Assisted Gravity Drainage

Lyu³

et al. 2022

Energies

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“…It is known that the most common methods of intensifying oil production from heavy oil and bitumen fields are thermal methods. Hot water injection [3], steam flooding [4,5], cyclic steam stimulation (CSS) [6][7][8], steam-assisted gravity drainage (SAGD) [9][10][11][12], in situ combustion (ISC) [13][14][15][16][17][18][19][20][21], and others are used to develop such fields. For instance, when heavy, highly viscous oils are subjected to steam-thermal treatment at 300 • C, their viscosity decreases significantly.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study of Catalytically Enhanced Cyclic Steam-Air Stimulation for In Situ Hydrogen Generation and Heavy Oil Upgrading

Afanasev,

Smirnov,

Ulyanova

et al. 2023

Catalysts

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The current study was performed for the experimental modeling of cyclic steam-air injection in a heavy oil reservoir model of dual porosity in the presence of a nickel-based catalyst for in situ oil upgrading enhanced by simultaneous hydrogen generation. The research was realized in the combustion tube setup with a sandpack core model under reservoir conditions due to the consistent injection of air followed by oil in situ combustion (ISC) and steam (water) injection. As a result, the original oil was upgraded regarding fractional composition and oil properties. In addition, simulated reservoir heterogeneity and cyclic stimulation intensified the hydrogen synthesis, which, in turn, could also contribute to oil upgrading.

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“…More than 50% of global oil reserves exist in the form of heavy oil or oil sands [1]. Due to the high viscosity, the heavy oil in the oil layer is usually featured with high flow resistance and sometimes even not able to flow.…”

Section: Introductionmentioning

confidence: 99%

Self-Excited Codirectionally Magnetically Compensated Rotating Ranging Method

Guo

Zhang

et al. 2020

Journal of Sensors

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During the Steam-Assisted Gravity Drainage (SAGD) technology-based dual horizontal well drilling process, it is necessary to accurately monitor the well spacing in real time to ensure safe and parallel drilling. In this paper, a self-excited codirectionally magnetically compensated rotating ranging method and device is proposed. In the numerical calculation and simulation, both parallel and nonparallel drilling models are established. Based on the models and the magnetic dipole theory, the relation between the magnetization field and the well spacing is analyzed. Furthermore, the one-to-one correspondence between the peak-to-peak value of the magnetization field and the well spacing is revealed. Well spacing is then determined according to the measured peak-to-peak value. To achieve better results, the influence of magnetic source (the magnetic moment) and casing characteristics (magnetic susceptibility, dynamic magnetization length) on measured peak-to-peak value is analyzed. Finally, field tests are carried out, and the feasibility and effectiveness of the theory and device are proved. This study provides innovation for a new approach of magnetic guidance while drilling and has a great significance in the development, testing, and calibration of well-ranging instruments.

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A Model to Estimate Heat Efficiency in Steam-Assisted Gravity Drainage by Condensate and Initial Water Flow in Oil Sands

Cited by 4 publications

References 41 publications

Numerical Modeling of the Steam Chamber Ramp-Up Phase in Steam-Assisted Gravity Drainage

Numerical Modeling of the Steam Chamber Ramp-Up Phase in Steam-Assisted Gravity Drainage

Experimental Study of Catalytically Enhanced Cyclic Steam-Air Stimulation for In Situ Hydrogen Generation and Heavy Oil Upgrading

Self-Excited Codirectionally Magnetically Compensated Rotating Ranging Method

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