Fissure temperature field model of supercritical CO2 fracturing

doi:10.7623/syxb201512014

Acta Petrolei Sinica ›› 2015, Vol. 36 ›› Issue (12): 1586-1592.DOI: 10.7623/syxb201512014

• Petroleum Engineering • Previous Articles Next Articles

Fissure temperature field model of supercritical CO₂ fracturing

Sun Xiaohui, Sun Baojiang, Wang Zhiyuan

College of Petroleum Engineering, China University of Petroleum, Shandong Qingdao 266580, China

Received:2015-06-30 Revised:2015-09-30 Online:2015-12-25 Published:2016-01-06

超临界CO₂压裂裂缝温度场模型

孙小辉, 孙宝江, 王志远

中国石油大学石油工程学院山东青岛 266580

通讯作者: 孙宝江,男,1963年11月生,1985年获华东石油学院钻井工程专业学士学位,1999年获北京大学流体力学专业博士学位,现为中国石油大学(华东)长江学者特聘教授、博士生导师,主要从事油气井工程、海洋石油工程、多相流理论及应用等方面的研究。Email:sunbj1128@126.com
作者简介:孙小辉,男,1991年3月生,2013年获中国石油大学(华东)石油工程专业学士学位,现为中国石油大学(华东)油气井工程专业硕士研究生,主要从事油气井工程与流体力学等方面的研究。Email:sxh049306@163.com
基金资助:
国家自然科学基金项目(No.51104172,No.U1262202)和中央高校基本科研业务费专项资金项目(15CX06020A)资助。

Abstract

Abstract:

During supercritical CO₂ fracturing, the physical property change and phase pattern of fissure fluid as well as geometrical dimensions, conductivity and other parameters of fissures are closely related to fissure temperature field. Aiming at the fact that supercritical CO₂ fracturing is featured by no wall building property and high filtration capacity, an analytical model of rock temperature field in the filtration process and heat flux function expression on fissure wall are derived in consideration of throttling effect in the filtration process. On this basis, in combination with phase and physical property changes of supercritical CO₂ fracturing fluid, the fissure temperature field model of supercritical CO₂ fracturing is established by taking specific enthalpy as the research object. The case analysis and calculation results prove that the heat flow rate on fissure wall is gradually reduced with the filtration time increasing, and fissure fluid temperature at the corresponding position is declined as well. The greater the filtration coefficient is, the smaller the heat flow rate on fissure wall will be, and the slower the temperature change of fissure fluid and surrounding rocks will be. Under the premise of high filtration coefficient, a significant cooling process exists in filtration fluid due to throttling effect, leading to great influences on fissure temperature field. During fracturing, the fissure fluid shows liquid and supercritical phase, instead of single supercritical phase. Meanwhile, there is a risk of hydrate formation near wellbores.

Key words: supercritical carbon dioxide, fracturing, temperature field, filtration, throttling effect

摘要：

超临界CO₂压裂中,裂缝流体物性变化、相态规律以及裂缝的几何尺寸、导流能力等参数均与裂缝温度场密切相关。针对超临界CO₂无造壁性、滤失能力强的特点,考虑滤失过程中的节流效应,推导了滤失过程中的岩石温度场解析模型及裂缝壁面上的热流函数表达式;以此为基础,考虑裂缝内超临界CO₂压裂液的相态、物性变化,以比焓为研究对象,建立了超临界CO₂压裂裂缝温度场模型。通过实例分析,计算结果表明:随着滤失时间的增加,裂缝壁面上的热流速率逐渐减小,对应位置处的裂缝流体温度逐渐降低;滤失系数越大,裂缝壁面上的热流速率越小,裂缝内流体和周围岩石温度变化越慢。高滤失系数条件下,由于节流效应,滤失流体存在明显的"冷却"过程,会对裂缝温度场产生很大的影响。压裂过程中,裂缝内流体会存在相态的转变,由超临界态转化为液态与超临界态并存,同时近井地带存在生成水合物的风险。

关键词: 超临界二氧化碳, 压裂, 温度场, 滤失, 节流

CLC Number:

TE357.28

Sun Xiaohui, Sun Baojiang, Wang Zhiyuan. Fissure temperature field model of supercritical CO₂ fracturing[J]. Acta Petrolei Sinica, 2015, 36(12): 1586-1592.

孙小辉, 孙宝江, 王志远. 超临界CO₂压裂裂缝温度场模型[J]. 石油学报, 2015, 36(12): 1586-1592.

References

[1] Rogala A,Ksiezniak K,Krzysiek J,et al.Carbon dioxide sequestration during shale gas recovery[J].Physicochemical Problems of Mineral Processing,2014,50(2):681-692.
[2] 程宇雄,李根生,王海柱,等.超临界二氧化碳喷射压裂井筒流体相态控制[J].石油学报,2014,35(6):1182-1187.
Cheng Yuxiong,Li Gensheng,Wang Haizhu,et al.Phase control of wellbore fluid during supercritical CO₂ jet fracturing[J].Acta Petrolei Sinica,2014,35(6):1182-1187.
[3] Reynolds M M,Ku R Y S,Vertz J B,et al.First field application in Canada of carbon dioxide separation for hydraulic fracture flow back operations[R].SPE 167197,2013.
[4] Lillies A T,King S R.Sand fracturing with liquid carbon dioxide[R].SPE 11341,1982.
[5] 程宇雄,李根生,王海柱,等.超临界CO₂喷射压裂孔内增压机理[J].石油学报,2013,34(3):550-555.
Cheng Yuxiong,Li Gensheng,Wang Haizhu,et al.Pressure boost mechanism within cavity of the supercritical CO₂ jet fracturing[J].Acta Petrolei Sinica,2013,34(3):550-555.
[6] 雷群,李宪文,慕立俊,等.低压低渗砂岩气藏CO₂压裂工艺研究与试验[J].天然气工业,2005,25(4):113-115.
Lei Qun,Li Xianwen,Mu Lijun,et al.Study and test of CO₂ fracturing techniques for sand reservoirs with low pressure and permeability[J].Natural Gas Industry,2005,25(4):113-115.
[7] 王振铎,王晓泉,卢拥军.二氧化碳泡沫压裂技术在低渗透低压气藏中的应用[J].石油学报,2004,25(3):66-70.
Wang Zhenduo,Wang Xiaoquan,Lu Yongjun.Application of carbon dioxide foam fracturing technology in low-permeability and low-pressure gas reservoir[J].Acta Petrolei Sinica,2004,25(3):66-70.
[8] Gupta D V S,Leshchyshyn T T.CO₂-energized hydrocarbon fracturing fluid:history and field application in tight gas wells [R].SPE 95061,2005.
[9] King S R.Liquid CO₂ for the stimulation of low-permeability reservoirs[R].SPE 11616,1983.
[10] Sinal M L,Lancaster G.Liquid CO₂ fracturing:advantages and limitations[J].Journal of Canadian Petroleum Technology,1987,26(5):26-30.
[11] Tudor R,Poleschuk A.Low-viscosity,low-temperature fracture fluids[J].Journal of Canadian Petroleum Technology,1996,35(7):31-36.
[12] Settari A,Bachman R C,Morrison D C.Numerical simulation of hydraulic fracturing treatments with low-viscosity fluids[J].Journal of Canadian Petroleum Technology,1987,26(5):31-40.
[13] Oldenburg C M.Joule-Thomson cooling due to CO₂ injection into natural gas reservoirs[J].Energy Conversion and Management,2007,48(6):1808-1815.
[14] Pruess K.On CO₂ fluid flow and heat transfer behavior in the subsurface,following leakage from a geologic storage reservoir[J].Environmental Geology,2008,54(8):1677-1686.
[15] Friehauf K E,Sharma M M,Sullivan R B.Application of a new compositional model for hydraulic fracturing with energized fluids:a South Texas case study[R].SPE 119265,2009.
[16] 张东晓,杨婷云.页岩气开发综述[J].石油学报,2013,34(4):792-801.
Zhang Dongxiao,Yang Tingyun.An overview of shale-gas production[J].Acta Petrolei Sinica,2013,34(4):792-801.
[17] 张琪.采油工程原理与设计[M].东营:中国石油大学出版社,2006:251-293.
Zhang Qi.Principle and design of oil production engineering[M].Dongying:China University of Petroleum Press,2006:251-293.
[18] 曾晓慧,郭大立,王祖文,等.压裂液综合滤失系数的计算方法研究[J].西南石油学院学报,2005,27(5):53-56.
Zeng Xiaohui,Guo Dali,Wang Zuwen,et al.Study on the calculating method of the total fracturing fluid leak-off coefficient[J].Journal of Southwest Petroleum Institute,2005,27(5):53-56.
[19] Kamphuis H,Davies D R,Roodhart L P.A new simulator for the calculation of the in situ temperature profile during well stimulation fracturing treatments[J].Journal of Canadian Petroleum Technology,1993,32(5):38-47.
[20] Yasunami T,Sasaki K,Sugai Y.CO₂ temperature prediction in injection tubing considering supercritical condition at Yubari ECBM pilot-test[J].Journal of Canadian Petroleum Technology,2010,49(4):44-50.
[21] Meier P,Ivory J,De Rocco M,et al.Field and laboratory measurements of leakoff parameters for liquid CO₂ and liquid CO₂/N2 fracturing:Annual Technical Meeting of The Petroleum Society,Calgary,Alberta,Canada,1997[C].Calgary:The Petroleum Society,1997.
[22] Mathias S A,Gluyas J G,Oldenburg C M,et al.Analytical solution for Joule-Thomson cooling during CO₂ geo-sequestration in depleted oil and gas reservoirs[J].International Journal of Greenhouse Gas Control,2010,4(5):806-810.
[23] Hasan A R,Kabir C S,Lin Dongqing.Analytic wellbore temperature model for transient gas-well testing[J].SPE Journal,2005,8(3):240-247.
[24] 王海柱,沈忠厚,李根生,等.CO₂气体物性参数精确计算方法研究[J].石油钻采工艺,2011,33(5):65-67.
Wang Haizhu,Shen Zhonghou,Li Gensheng,et al.Research on the precise calculation method of physical parameters for CO₂[J].Oil Drilling & Production Technology,2011,33(5):65-67.
[25] McGowen J M,Vitthal S.Fracturing-fluid leakoff under dynamic conditions part 1:development of a realistic laboratory testing procedure[R].SPE 36492,1996.
[26] Sun Rui,Duan Zhenhao.Prediction of CH₄ and CO₂ hydrate phase equilibrium and cage occupancy from ab initio intermolecular potentials[J].Geochimica et Cosmochimica Acta,2005,69(18):4411-4424.

Fissure temperature field model of supercritical CO₂ fracturing

超临界CO₂压裂裂缝温度场模型

PDF

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments

[1]	Li Yong, Ji Hongfei, Xing Pengju, Su Yinao, Liu Shuoqiong, Wei Fengqi. Theoretical solutions of temperature field and thermal stress field in wellbore of a gas well [J]. Acta Petrolei Sinica, 2021, 42(1): 84-94.
[2]	Liu He, Kuang Lichun, Li Guoxin, Wang Feng, Jin Xu, Tao Jiaping, Meng Siwei. Considerations and suggestions on optimizing completion methods of continental shale oil in China [J]. Acta Petrolei Sinica, 2020, 41(4): 489-496.
[3]	Lin Riyi, Li Duan, Wang Xinwei, Yang Zhengda, Zhang Liqiang. Three-dimensional physical model experiment of steam distribution in horizontal wells [J]. Acta Petrolei Sinica, 2020, 41(12): 1649-1656.
[4]	Pu Chunsheng, Zheng Heng, Yang Zhaoping, Gao Zhendong. Research status and development trend of the formation mechanism of complex fractures by staged volume fracturing in horizontal wells [J]. Acta Petrolei Sinica, 2020, 41(12): 1734-1743.
[5]	Guo Jianchun, Ren Jichuan, Wang Shibin, Gou Bo, Zhao Junsheng, Wu Lin. Numerical simulation and application of multi-field coupling of acid fracturing in fractured tight carbonate reservoirs [J]. Acta Petrolei Sinica, 2020, 41(10): 1219-1228.
[6]	Sun Ke, Liu Huiqing, Wang Teng, Zhang Hongling, Xie Jianyong. A novel method for predicting recoverable reserves of single well through depletion-drive development after fracturing in tight oil reservoirs [J]. Acta Petrolei Sinica, 2020, 41(10): 1238-1247.
[7]	Wang Haizhu, Li Gensheng, Zheng Yong, Kamy Sepehrnoori, Shen Zhonghou, Yang Bing, Shi Lujie. Research status and prospects of supercritical CO₂ fracturing technology [J]. Acta Petrolei Sinica, 2020, 41(1): 116-126.
[8]	Xu Jiaxiang, Ding Yunhong, Yang Lifeng, Liu Zhe, Gao Rui, Wang Zhen. Transportation and distribution laws of proppants in tortuous micro-fractures [J]. Acta Petrolei Sinica, 2019, 40(8): 965-974.
[9]	Pu Xiugang, Jin Fengming, Han Wenzhong, Shi Zhannan, Cai Aibing, Wang Aiguo, Guan Quansheng, Jiang Wenya, Zhang Wei. Sweet spots geological characteristics and key exploration technologies of continental shale oil: a case study of Member 2 of Kongdian Formation in Cangdong sag [J]. Acta Petrolei Sinica, 2019, 40(8): 997-1012.
[10]	Chang Yuanjiang, Wang Jian, Li Jiayi, Nie Zhenyu, Zhang Weiguo, Xu Liangbin, Liu Xiuquan, Chen Guoming. Calculation method of subsea wellhead fatigue damage considering thermal effect [J]. Acta Petrolei Sinica, 2019, 40(4): 482-492.
[11]	Wang Zhigang. Reservoir formation conditions and key efficient exploration & development technologies for marine shale gas fields in Fuling area,South China [J]. Acta Petrolei Sinica, 2019, 40(3): 370-382.
[12]	Wu Junchen, Fan Yiren, Cao Juntao, Fan Zhuoying, Wang Xiaolong, Wu Fei. Simulation of oil-based mud invasion in sandstone reservoir based on a large-sized formation model [J]. Acta Petrolei Sinica, 2019, 40(11): 1407-1414.
[13]	Liu Jubao, Yao Liming, Li Xingyue, Yue Qianbei, Zhang Qiang, Zhang Xiaochuan, Zhang Hongyan, Wang Haitao. Pressure loss experiment and numerical simulation of sand-carrying fracturing fluid in contraction-expansion pipe [J]. Acta Petrolei Sinica, 2019, 40(1): 86-98.
[14]	Gao Shusheng, Liu Huaxun, Ye Liyou, Hu Zhiming, An Weiguo. Physical simulation experiment and numerical inversion of the full life cycle of shale gas well [J]. Acta Petrolei Sinica, 2018, 39(4): 435-444.
[15]	Zhang Hongyuan, Huang Zhongwei, Li Gensheng, Lu Peiqing, Tian Shouceng, Li Xiaojiang. Fracture propagation laws and acoustic emission response characteristics of coal radial well-pulse hydraulic fracturing [J]. Acta Petrolei Sinica, 2018, 39(4): 472-481.