水平气井内温度分布影响因素的实验研究
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摘要
为了建立利用水平气井温度数据定量解释产出剖面的解释模型,需要对水平井温度分布的影响因素进行分析评价。通过室内气液两相流实验平台,研究了产气量、产液量、射孔簇开孔方式、井筒倾角、重力场等因素对井筒温度分布的影响规律。结果表明:单相气和气液两相由射孔簇进入井筒后都会出现焦耳-汤姆逊效应,气量越大,井筒内温度越低,液量越大,井筒内的温降效应越弱;相同条件下,射孔数目越多,流量-温度曲线越平缓,射孔分布越均匀,井筒内温度分布越平缓;气液两相流时管道倾角对温度分布的影响大于单相气时的影响;由于重力作用,同一横截面上温度存在偏差。研究结果丰富了水平井温度分布规律的认识,为利用温度数据解释产出剖面的解释模型建立提供指导,具有重要的工程应用价值和学术意义。
In order to establish the model of shale gas production based on horizontal well temperature profile interpretation,the influencing factors of temperature distribution in the wellbore were studied by laboratory experiments. The gas volume,liquid volume,perforation distribution,wellbore inclination and gravity field on the temperature distribution in the horizontal wellbore were studied. The results show that the Joule-Thomson effect occurs when the single-phase gas and the gas-liquid two-phase enter the wellbore from the jet-hole cluster. Under the same conditions,the larger the gas volume,the lower the temperature in the wellbore,while the larger the liquid volume,the weaker the temperature dropping in the wellbore. Under the same conditions,the more perforation,the smoother the flow-temperature curve,the more uniform the perforation distribution,the more gentle the temperature distribution in the wellbore. The influence of the pipe inclination on the temperature distribution for gas-liquid twophase flow is greater than that of the single-gas flow. Due to the influence of gravity,in the case of single-phase gas,the temperature of a same cross-section is also not uniform. The conclusions can enrich the understanding of the temperature distribution in horizontal gas wells,and provide a basis for the establishment of gas production model based on temperature profile interpretation,which has great value for engineering and theory.
In order to establish the model of shale gas production based on horizontal well temperature profile interpretation,the influencing factors of temperature distribution in the wellbore were studied by laboratory experiments. The gas volume,liquid volume,perforation distribution,wellbore inclination and gravity field on the temperature distribution in the horizontal wellbore were studied. The results show that the Joule-Thomson effect occurs when the single-phase gas and the gas-liquid two-phase enter the wellbore from the jet-hole cluster. Under the same conditions,the larger the gas volume,the lower the temperature in the wellbore,while the larger the liquid volume,the weaker the temperature dropping in the wellbore. Under the same conditions,the more perforation,the smoother the flow-temperature curve,the more uniform the perforation distribution,the more gentle the temperature distribution in the wellbore. The influence of the pipe inclination on the temperature distribution for gas-liquid twophase flow is greater than that of the single-gas flow. Due to the influence of gravity,in the case of single-phase gas,the temperature of a same cross-section is also not uniform. The conclusions can enrich the understanding of the temperature distribution in horizontal gas wells,and provide a basis for the establishment of gas production model based on temperature profile interpretation,which has great value for engineering and theory.
引文
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12李波,甯波,苏海洋,等.产水气井井筒温度压力计算方法[J].计算物理,2014,31(5):573-580Li Bo,Ning Bo,Su Haiyang,et al.A calculation method for temperature and pressure distribution in water production gas wellbores[J].Chinese Journal of Computational Physics,2014,31(5):573-580
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14张锐铎,段永刚,蔡珺君.一种预测水平井井筒温度剖面的新方法[J].复杂油气藏,2017,10(3):39-43Zhang Ruiduo,Duan Yonggang,Cai Junjun.A new app roach for predicting borehole temperature profile of horizontal wells[J].Complex Hydrocarbon Reservoirs,2017,10(3):39-43
15李元华.水平井井筒温度场数值模拟方法及影响因素研究[D].青岛:中国石油大学(华东),2015Li Yuanhua.Numerical simulation method and effect factors about temperature in horizontal wellbore[D].Qingdao:China University of Petroleum(East China),2015
16姚强,樊丽丽,张文静,等.一种定量解释水平气井产出剖面的方法:CN106321065A[P].2016-08-31Yao Qiang,Fan Lili,Zhang Wenjing,et al.Method for quantitatively explaining horizontal gas well production profile:CN106321065A[P].2016-08-31
2薛永超,张雪娇,丁冠阳.页岩气井返排早期气水两相流数学模型研究[J].科学技术与工程,2017,17(24):218-222Xue Yongchao,Zhang Xuejiao,Ding Guanyang.Mathematical model study on gas and water two-phase of early-time flowback in shale gas wells[J].Science Technology and Engineering,2017,17(24):218-222
3殷鸿尧,鲁光亮,李祖友,等.川西气田井底积液污染物分析及对策研究[J].油田化学,2018,35(1):97-101Yin Hongyao,Lu Guangliang,Li Zuyou,et al.Composition analysis of downhole pollutants from gas wells in Western Sichuan Basin and corresponding countermeasures[J].Oilfield Chemistry,2018,35(1):97-101
4秦羽乔,石文睿,石元会,等.涪陵页岩气田水平井产气剖面测井技术应用试验[J].天然气勘探与开发,2016,39(4):18-22Qin Yuqiao,Shi Wenrui,Shi Yuanhui,et al.Experimental study on producing profile logging for horizontal wells,fuling shale-gas field[J].Natural Gas Exploration&Development,2016,39(4):18-22
5 Sellwood S M,Hart D J,Bahr J M.Evaluating the use of in-well heat tracer tests to measure borehole flow rates[J].Ground Water Monitoring&Remediation,2016,35(4):85-94
6 Yoshioka K.Detection of water or gas entry into horizontal wells by using permanent downhole monitoring system[D].College Station,Texas:Texas A&M University,2007
7 Ramey H J.Wellbore heat transmission[J].Journal of Petroleum Technology,1962,14(4):427-435
8 You J,Rahnema H,Mcmillan M D.Numerical modeling of unsteady state wellbore heat transmission[J].Journal of Natural Gas Science and Engineering,2016,34:1062-1076
9 Tarom N,Hossain M M.A practical method for the evaluation of the Joule Thomson effects to predict flowing temperature profile in gas producing wells[J].Journal of Natural Gas Science and Engineering,2015,26:1080-1090
10 Frank S,John S.Investigating water movement within and near wells using active point heating and fiber optic distributed temperature sensing[J].Sensors,2018,18(4):1023-1036
11李强,姚绪钢,黄社华,等.井下有积液气井的产气剖面解释方法研究[J].测井技术,2005,29(4):371-373Li Qiang,Yao Xugang,Huang Shehua,et al.An interpretation method for gas production profile of gas wells with standing liquid[J].Well Logging Technology,2005,29(4):371-373
12李波,甯波,苏海洋,等.产水气井井筒温度压力计算方法[J].计算物理,2014,31(5):573-580Li Bo,Ning Bo,Su Haiyang,et al.A calculation method for temperature and pressure distribution in water production gas wellbores[J].Chinese Journal of Computational Physics,2014,31(5):573-580
13 Cai J,Duan Y.Study on temperature distribution along wellbore of fracturing horizontal wells in oil reservoir[J].Petroleum,2015,1(4):358-365
14张锐铎,段永刚,蔡珺君.一种预测水平井井筒温度剖面的新方法[J].复杂油气藏,2017,10(3):39-43Zhang Ruiduo,Duan Yonggang,Cai Junjun.A new app roach for predicting borehole temperature profile of horizontal wells[J].Complex Hydrocarbon Reservoirs,2017,10(3):39-43
15李元华.水平井井筒温度场数值模拟方法及影响因素研究[D].青岛:中国石油大学(华东),2015Li Yuanhua.Numerical simulation method and effect factors about temperature in horizontal wellbore[D].Qingdao:China University of Petroleum(East China),2015
16姚强,樊丽丽,张文静,等.一种定量解释水平气井产出剖面的方法:CN106321065A[P].2016-08-31Yao Qiang,Fan Lili,Zhang Wenjing,et al.Method for quantitatively explaining horizontal gas well production profile:CN106321065A[P].2016-08-31