Comprehensive Evaluation on Steam Chamber Location and Production Prediction of SAGD in Heavy Oil Reservoirs

doi:10.7657/XJPG20220416

Abstract

Abstract:

Production and steam chamber location are critical for steam assisted gravity drainage (SAGD) in heavy oil reservoirs. The existing prediction model only considers the lateral expansion of steam chamber and cannot predict the production of adjacent wells after steam chamber contact. According to the different characteristics of the steam chamber in the lateral expansion stage and the downward expansion stage, a parameter of thermal penetration depth was introduced, the flow potential function was modified, and a parabolic production prediction model was established. The results show that the production increases gradually in the initial lateral expansion stage of steam chamber, and then decreases due to the reduction of the inclination of the steam chamber interface; in the downward expansion stage of steam chamber, the production further decreases. The model analysis reveals that SAGD is more suitable for thick reservoir development, and the optimal well spacing needs to be determined depending on the oilfield conditions. The parabolic production prediction model takes the characteristics of the steam chamber into account in the downward expansion stage, and the accuracy of the model is verified by comparing with the previous experimental data.

Key words: heavy oil reservoir, steam assisted gravity drainage, steam chamber, prediction model, unsteady heat transfer, parabolic interface, thermal penetration depth, production prediction

CLC Number:

TE345

GUO Yunfei, LIU Huiqing, LIU Renjie, ZHENG Wei, DONG Xiaohu, WANG Wuchao. Comprehensive Evaluation on Steam Chamber Location and Production Prediction of SAGD in Heavy Oil Reservoirs[J]. Xinjiang Petroleum Geology, 2022, 43(4): 484-490.

Figures/Tables 9

Fig. 1.

Fig. 2.

Table 1.

Fig. 3.

Fig. 4.

Table 2.

Fig. 5.

Fig. 6.

Fig. 7.

References 23

[1]	OWEN N A, INDERWILDI O R, KING D A. The status of conventional world oil reserves:hype or cause for concern?[J]. Energy Policy, 2010, 38(8):4743-4749. doi: 10.1016/j.enpol.2010.02.026
[2]	庞惠文, 金衍, 高彦芳, 等. 风城油田齐古组油砂细观结构和渗流特征[J]. 新疆石油地质, 2021, 42(4):487-494.
	PANG Huiwen, JIN Yan, GAO Yanfang, et al. Study on meso-structures and flow characteristics of oil sands in Qigu formation of Fengcheng oilfield[J]. Xinjiang Petroleum Geology, 2021, 42(4):487-494.
[3]	孙江河, 范洪富, 张付生, 等. 提高稠油采收率技术概述[J]. 油田化学, 2019, 36(2):366-371.
	SUN Jianghe, FAN Hongfu, ZHANG Fusheng, et al. Overview of improving heavy oil recovery technology[J]. Oilfield Chemistry, 2019, 36(2):366-371.
[4]	宫宇宁, 王宇豪, 朱舟元. 国外蒸汽泡沫驱矿场实施效果[J]. 新疆石油地质, 2021, 42(1):120-126.
	GONG Yuning, WANG Yuhao, ZHU Zhouyuan. Field application of steam foam flooding in foreign oilfields[J]. Xinjiang Petroleum Geology, 2021, 42(1):120-126.
[5]	何泽能, 李振山, 籍国东. 沥青砂开采方法综述[J]. 特种油气藏, 2006, 13(1):1-5.
	HE Zeneng, LI Zhenshan, JI Guodong. Overview on exploitation technology of tar sands[J]. Special Oil & Gas Reservoirs, 2006, 13(1):1-5.
[6]	ZHANG Qichen, LIU Huiqing, DONG Xiaohu, et al. A new comprehensive model to estimate the steam chamber expansion and recovery performance of entire SAGD process[J]. Journal of Petroleum Science and Engineering, 2020, 185:106 629. doi: 10.1016/j.petrol.2019.106629
[7]	DONG Xiaohu, LIU Huiqing, CHEN Zhangxin, et al. Enhanced oil recovery techniques for heavy oil and oilsands reservoirs after steam injection[J]. Applied Energy, 2019, 239:1190-1211. doi: 10.1016/j.apenergy.2019.01.244
[8]	BUTLER R M, MCNAB G S, LO H Y. Theoretical studies on the gravity drainage of heavy oil during in‐situ steam heating[J]. The Canadian Journal of Chemical Engineering, 1981, 59(4):455-460. doi: 10.1002/cjce.5450590407
[9]	BUTLER R, STEPHENS D J. The gravity drainage of steam-heated heavy oil to parallel horizontal wells[J]. Journal of Canadian Petroleum Technology, 1981, 20(2):90-96.
[10]	SABETI M, RAHIMBAKHSH A, MOHAMMADI A H. Using exponential geometry for estimating oil production in the SAGD process[J]. Journal of Petroleum Science and Engineering, 2016, 138:113-121. doi: 10.1016/j.petrol.2015.11.014
[11]	GUO Yunfei, LIU Huiqing, FENG Yabin, et al. A new SAGD comprehensive multi-stage model for oil production using a concave parabola geometry[J]. Journal of Petroleum Science and Engineering, 2022, 208:109 321. doi: 10.1016/j.petrol.2021.109321
[12]	ZARGAR Z, FAROUQ ALI S M. Analytical treatment of steam-assisted gravity drainage:old and new[J]. SPE Journal, 2017, 23(1):117-127. doi: 10.2118/180748-PA
[13]	AZAD A, CHALATURNYK R J. An improved SAGD analytical simulator:circular steam chamber geometry[J]. Journal of Petroleum Science and Engineering, 2012, 82/83:27-37. doi: 10.1016/j.petrol.2012.01.003
[14]	IGBOKWE L C, OBUMSE C M, HOSSAIN M E. New SAGD model for oil production using a concave parabola steam chamber geometry[J]. Journal of Petroleum Science and Engineering, 2019, 175:971-984. doi: 10.1016/j.petrol.2018.12.052
[15]	ITO Y, SUZUKI S. Numerical simulation of the SAGD process in the Hangingstone oil sands reservoir[J]. Journal of Canadian Petroleum Technology, 1996, 38(9):27-35.
[16]	EDMUNDS N, GITTINS S D. Effective application of steam assisted gravity drainage of bitumen to long horizontal well pairs[J]. Journal of Canadian Petroleum Technology, 1993, 32(6):49-55.
[17]	ALALI N, PISHVAIE M R, JABBARI H. A new semi-analytical modeling of steam-assisted gravity drainage in heavy oil reservoirs[J]. Journal of Petroleum Science and Engineering, 2009, 69(3):261-270. doi: 10.1016/j.petrol.2009.09.003
[18]	ZHU L, ZENG F, ZHAO G, et al. Using transient temperature analysis to evaluate steam circulation in SAGD start-up processes[J]. Journal of Petroleum Science and Engineering, 2012, 100:131-145. doi: 10.1016/j.petrol.2012.11.010
[19]	BUTLER R M. A new approach to the modelling of steam-assisted gravity drainage[J]. Journal of Canadian Petroleum Technology, 1985, 24(3):42-51. doi: 10.2118/85-03-01
[20]	CHUNG K H, BUTLER R M. Geometrical effect of steam injection on the formation of emulsions in the steam-assisted gravity drainage process[J]. Journal of Canadian Petroleum Technology, 1988, 27(1):373-392.
[21]	KESHAVARZ M, HARDING T G, CHEN Zhangxing. A new approach to the analytical treatment of steam-assisted gravity drainage:a prescribed interface model[J]. SPE Journal, 2019, 24(2):492-510. doi: 10.2118/194203-PA
[22]	何万军, 王延杰, 王涛, 等. 储集层非均质性对蒸汽辅助重力泄油开发效果的影响[J]. 新疆石油地质, 2014, 35(5):574-577.
	HE Wanjun, WANG Yanjie, WANG Tao, et al. Impact of reservoir heterogeneity on ultra-heavy oil development effect by SAGD process[J]. Xinjiang Petroleum Geology, 2014, 35(5):574-577.
[23]	杨立龙. 中深层超稠油油藏SAGD开发热效率分析及提升对策[J]. 特种油气藏, 2021, 28(3):151-156.
	YANG Lilong. Analysis on the thermal efficiency of SAGD development in mid-deep super heavy oil reservoirs[J]. Special Oil ＆ Gas Reservoirs, 2021, 28(3):151-156.