Calculation model of on-way parameters and heating radius in a superheated steam injection wellbore

Zhou, Tong; Cheng, Linsong; Chunbai, He; Pang, Zhanxi; Zhou, Fengjun

doi:10.1016/s1876-3804(10)60016-x

Cited by 54 publications

(2 citation statements)

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“…The paper entitled "Experimental study on the mechanism of enhanced oil recovery by multi-thermal fluid in offshore heavy oil" published on International Journal of Heat and Mass Transfer presented important additives to the existing knowledge on the oil displacement mechanisms under different thermal fluid flooding condition. At present, the study on heavy oil displacement mechanisms can be divided into three branches: (a) the physical heating mechanism (Sun et al 2018a, b, c;Zhao et al 2018), (b) the chemical reaction mechanism (Tiyao et al 2010;Huang et al 2018;Xu et al 2013), and (c) the hydrodynamic mechanism (Bao et al 2016;Wu et al 2018).…”

Section: Insights and Perspectivesmentioning

confidence: 99%

Slight insights and perspectives of future heavy oil recovery

Sun

Yao

2019

J Petrol Explor Prod Technol

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In this paper, we put forward critical future prospects based on the paper that was published on International Journal of Heat and Mass Transfer. At present, engineers are familiar with the advantages and disadvantages of different working fluids in thermal recovery of heavy oil. For all the oil displacement mechanism, they can be summarized into only three aspects: (a) physical heat conduction, (b) chemical reactions, and (c) the differences in hydrodynamic properties between fluids. This is already well known in the existing body of knowledge. However, how much will each of these three mechanisms contribute to the total oil recovery efficiency is quite interesting and important to the industry. Based on the commented paper and some related references, we pointed out the future research directions in this area.

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Section: Insights and Perspectivesmentioning

confidence: 99%

Slight insights and perspectives of future heavy oil recovery

Sun

Yao

2019

J Petrol Explor Prod Technol

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“…As fire-flooding has strong adaptability to develop the reservoir [1][2][3][4][5][6] , it can be considered as a follow-up EOR technology of the low economic profit and high oil recovery reservoirs flooded by water or steam. CSS is now the key technique for the heavy oil reservoirs in China, and most of the reservoirs have been operated in many cycles which results in problems such as high water cut, low OSR and low-efficiency.…”

Section: Introductionmentioning

confidence: 99%

Research and Application of Fire-Flooding Technologies in Post-Steam Injected Heavy Oil Reservoir

Chang-feng

Guan

Huang³

2013

All Days

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As fire-flooding has strong adaptability to develop the reservoir, it can be considered as a follow-up EOR technology of the low economic profit and high oil recovery reservoirs flooded by water or steam. Because of the complicated secondary water and steam channels, fire-flooding in post-steam-injected reservoir is far different from that in original reservoir. In this paper, the mechanism and problems associated with development engineering of fire-flooding in post-steam-injected heavy oil reservoir was studied systematically by using 1D&3D physical simulation systems and reservoir numerical simulator. The temperature of combustion zone decreased and high-temperature zone enlarged because there existed secondary water formed during steam injection which could absorb and carry heat towards producers out of combustion front during fire flooding, but high saturation of water in layer caused by secondary water had less influence on the quantity of fuel deposit and air consumption. In the process of 3D fire flooding experiments, air override was observed during combustion front moving forward and resulted in a coke zone in the bottom of layer, and the ultimate recovery factor reached 65%~70% on fact that the saturation of oil within the coke zone was no more than 20%. The flooding model, well pattern, well spacing, and air injection rate was optimized according to the specific property and the existed well pattern in post-steam-injected heavy oil reservoir, and the key techniques of ignition, lifting, and anticorrosion was also selected in the same time. The pilot of fire flooding in H1 block in Xinjiang oil field was carried out since Dec. 2009 on the base of these research work, and now the pilot begin to show the better performance. The production oil is about 49t/d, and the water cut is stable below 70%, the air oil ratio is about 2000m 3 /t, the good performance is gained for this kind of abandoned post-steam-injected heavy oil reservoir.

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An integrated model for productivity prediction of cyclic steam stimulation with horizontal well

Fan

et al. 2019

Energy Science & Engineering

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As the accurate productivity prediction of cyclic steam stimulation with horizontal well (CSSHW) is essential for its effective utilization in heavy oil reservoirs, a novel integrated model for predicting productivity of CSSHW was proposed in this paper. Firstly, governing equations to predict thermophysical parameters of injected steam in the horizontal well were established. On the basis, the heating model for radius of hot fluid zone and steam zone were derived respectively according to a more realistic temperature distribution of formation. Then, coupled with heating model, the productivity prediction model was established according to the principle of equivalent percolation resistance. Then, comparisons have been made among the new model results, CMG STARS results, and measured data to verify its accuracy. Finally, after the new proposed model is validated, the effects of steam quality and injection rate on heating radius and oil production were analyzed in detail. The results indicate that the result of new model is in good agreement with that of CMG STARS and measured data, verifying the correctness of the model. In addition, the radius of hot fluid zone and steam zone both decreases with horizontal well length because of the heat losses as the steam flows along the horizontal wellbore. Influential factor analysis shows that high steam quality and steam injection rate can improve heating radius and cumulative oil production.

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Calculation model of on-way parameters and heating radius in a superheated steam injection wellbore

Cited by 54 publications

References 1 publication

Slight insights and perspectives of future heavy oil recovery

Slight insights and perspectives of future heavy oil recovery

Research and Application of Fire-Flooding Technologies in Post-Steam Injected Heavy Oil Reservoir

An integrated model for productivity prediction of cyclic steam stimulation with horizontal well

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