EXPERIMENTAL STUDY ON ULTRASONIC EFFECT IN OIL RESERVIOR
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摘要: 利用超声波可以改变介质渗流特性和流体流变性的原理,研究了超声波作用前后岩心渗透率变化曲线和压力梯度变化曲线,探讨了超声波在油层中作用的有效距离。研究结果表明,超声波处理后,原油的视粘度显著降低,反映了明显的声流变特性;超声波的作用功率越高,原油的降粘作用越大;超声波作用频率越低,原油的降粘幅度越大;原油粘度越高,降粘幅度越大。Abstract: By means of the principle that ultrasonic reaction can change the flowing of fluids through porous media and fluid rheological behavoirs,the changes of the curves of core permeability and pressure gradient before and after ultrasonic reaction have been researched.The efficient distance of ultrasonics in the oil layer was discussed in the paper.The study results show that the apparent viscosity of crude oil after ultrasonic reaction decreased greatly,and that the sound rheological behavior of the oil is obvious.The bigger the ultrasonic reaction power is,the stronger the effect on viscosity reduction of crude oil is.The lower the ultrasonic frequency is,the greater the extent of viscosity reduction of crude oil is.The higher the oil viscosity is,the greater the extent of viscosity reduction of crude oil is.
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Key words:
- ultrasonics /
- permeability /
- rheological behavior /
- plug removal /
- apparent viscosity
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[1] 钟锴,徐鸣洁,王宏等.岩样中孔隙、裂缝声波特征的实验研究[J].石油实验地质,2002,24(2):164~171 [2] 庄爱民.超声波采油技术装备的应用及发展前景[J].石油机械,1995,23(2):55~57 [3] 向阳,向丹,黄大志.裂缝-孔隙型双重介质应力敏感模拟试验研究[J].石油实验地质,2003,25(5):498~504 [4] 顾春元,虞建业,任永林等.超声波采油技术研究与应用[J].钻采工艺,2003,26(6):59~61 [5] 杨永超,宋新华,刘明锋.超声波油层解堵技术的应用[J].油气井测试,1999,8(3):46~48 [6] Frank M White.流体力学[M].陈建宏译.台北:晓园出版社,1986.127~136 [7] 程守洙,江之水.普通物理学第三册[M].第5版.北京:高等教育出版社,1997.87~98 [8] 孙仁远,严炽培.超声波对岩石渗透率影响的研究[J].石油钻采工艺,1996,18(1):101~103 [9] Guo Xiao,Du Zhimin,Li Guangquan.High frequency vibration recovery enhancement technology in the heavy oil fields of China[A].In:SPE ed.International thermal operations and heavy oil symposium and western regional meeting treatise[C].California:SPE,2004.86956-MS [10] Schembre J M,Kovscek A R.Thermally induced fines mobilization:Its relationship to wettability and formation damage[A].In:SPE ed.International thermal operations and heavy oil symposium and western regional meeting treatise[C].California:SPE,2004.86937-MS [11] 张守鹏,王伟庆,夏云.提高油层渗透率的酸-岩作用原理与油层改造应用实例[J].石油实验地质,2000,22(1):77~80 [12] 徐守余.渤海湾盆地胜坨油田二区储层微观渗流场演化研究[J].石油实验地质,2003,25(4):381~384
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