A Method to Improve the Accuracy of Friction Calculations for HPG Fracturing Fluid
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摘要: 目前计算胍胶压裂液摩阻采用的降阻比经验公式系数求取困难，摩阻计算精度低，与实际摩阻相差较大。采用试验和理论相结合的方法对摩阻计算方法进行了改进：根据室内小管径胍胶压裂液摩阻试验结果，采用拟合方法建立流速与降阻比的关系式，再利用流速与降阻比的关系式计算不同管径和流速下胍胶压裂液的摩阻。通过室内试验和现场实测摩阻验证了胍胶压裂液摩阻计算改进方法的准确性，结果表明，与传统经验公式方法相比，改进方法降低了求取经验公式系数的难度，提高了胍胶压裂液摩阻的计算精度，改进方法计算的摩阻与实测摩阻的平均相对误差不超过16%，而传统经验公式平均相对误差高达31%。研究结果表明，摩阻计算改进方法能够提高胍胶压裂摩阻的计算精度，可以为压裂设计和施工提供依据。Abstract: At present,calculating the fracturing fluid friction is problematic because there are problems with the ratio of drag,e.g.difficult to find the coefficient,low accuracy of friction calculation,large difference between calculated friction and real one,etc.By combining testing and theoretical methods,the friction calculation method has been improved,i.e.through the indoor small pipe friction test of HPG fluid,fitting and establishing the relationship between the flow velocity and the ratio of drag. Later, the formula was given to calculate the friction of HPG fracturing fluid under different pipe diameters and flow velocities.The indoor and field tests showed that the improved method was accurate in calculating the HPG fracturing fluid friction.Compared with the traditional empirical formula method,the improved method can reduce the difficulty of calculating coefficient of the empirical formula,and improves the accuracy of HPG friction calculation.In this case,the average relative error of calculated friction and real friction is less than 16%,while that of the traditional empirical formula is up to 31%.The research results indicates that the improved method can improve the calculation precision of HPG fracturing friction,and provide a basis for fracturing design and operation.
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Keywords:
- fracturing fluid /
- HPG /
- friction /
- ratio of drag /
- fitting /
- regression analysis
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[1] 郭建春,王世彬,伍林.超高温改性瓜胶压裂液性能研究与应用[J].油田化学,2011,28(2):201-205. GUO Jianchun,WANG Shibin,WU Lin.Research and application of ultra-high temperature fracture fluids[J].Oilfield Chemistry,2011,28(2):201-205. [2] 杜发勇,张恩仑,张学政,等.压裂施工中管路摩阻计算方法分析与改进意见探讨[J].钻采工艺,2002,25(5):41-43. DU Fayong,ZHANG Enlun,ZHANG Xuezheng,et al.The analysis and improvement of friction calculation method in fracturing operation[J].Drilling Production Technology,2002,25(5):41-43. [3] 张曙辉,刘瑞文,王介玉,等.深水井控中节流管线摩阻分析及压井方法[J].石油钻探技术,2006,34(5):28-29. ZHANG Shuhui,LIU Ruiwen,WANG Jieyu,et al.A method of killing well and analysis on choke-line friction losses for deepwater-well control[J].Petroleum Drilling Techniques,2006,34(5):28-29. [4] 王鸿勋,张士诚.水力压裂设计数值计算方法[M].北京:石油工业出版社,1998:31-33. WANG Hongxun,ZHANG Shicheng.Numerical method of hydraulic fracturing design[M].Beijing:Petroleum Industry Press,1998:31-33. [5] 孔庆利.考虑流变特性改变的水力压裂管内摩阻计算模型研究[J].科学技术与工程,2013,13(14):3995-3999. KONG Qingli.Research on computation model of friction in the oil tube during hydrofracture with consideration of rheology change[J].Science Technology and Engineering,2013,13(14):3995-3999. [6] LORD D L.Turbulent flow of stimulation fluids:an evaluation of friction loss scale-up methods[R].SPE 16889,1987.
[7] 刘合,张广明,张劲,等.油井水力压裂摩阻计算和井口压力预测[J].岩石力学与工程学报,2010,29(增刊1):2833-2839. LIU Ge,ZHANG Guangming,ZHANG Jin,et al.Friction loss calculation and surface pressure prediction in oil well hydraulic fracturing[J].Chinese Journal of Rock Mechanics and Engineering,2010,29(supplement1):2833-2839. [8] LORD D L,HULSEY B W,MELTON L L.General turbulent pipe flow scale-up correlation for rheologically complex fluids[J].Society of Petroleum Engineers Journal,1969,7(3):252-258.
[9] 陈彦东,卢拥军,邱晓慧,等.水基线性压裂液在管路流动中的摩阻分析[C]//第七届全国流变学学术会议,廊坊,8月26-27日,2002年. CHEN Yandong,LU Yongjun,QIU Xiaohui,et al.Analysis of frictional resistance of water based linear fracturing fluid in pipeline flow[C]//The 7th National Conference on Rheology,Langfang,August 26-27,2002. [10] 杨超,肖兵.压裂液摩阻影响因素分析[J].石油化工应用,2014,33(5):28-31. YANG Chao,XIAO Bing.Fracturing fluid friction factor analysis[J].Petrochemical Industry Application,2014,33(5):28-31. [11] 张景富.钻井流体力学[M].北京:石油工业出版社,1994:179-192. ZHANG Jingfu.Drilling fluid mechanics[M].Beijing:Petroleum Industry Press,1994:179-192. -
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