地面交联酸与叙利亚灰岩的反应动力学  

Kinetics of Chemical Reaction between Surface Cross-Linked Acid and Limestone from Syria

作　　者：蒋睿[1,2] 蒋建方[1,2] 吴川[3] 张祖国[3] 张汝生[3] 刘光普[1,2] 李龙[1,2] 高翔[1,2] 

机构地区：[1]中国石油大学提高采收率研究院,北京102249 [2]石油工程教育部重点实验室(中国石油大学),北京102249 [3]中国石化石油勘探开发研究院采油工程技术研究所,北京100083

出　　处：《油田化学》2015年第3期328-331,共4页Oilfield Chemistry

基　　金：国家重大科技专项"大型油气田及煤层气开发"下属课题"孔隙型碳酸盐岩油藏提高采收率关键技术研究"(项目编号2011ZX05031-003-004)

摘　　要：采用旋转岩盘装置在60、90、120和150℃进行了地面交联酸与叙利亚灰岩的反应动力学实验,建立了相应温度下表征该交联酸液与目的层灰岩反应的动力学方程。结果表明,反应体系的温度对其反应速率有重要影响,温度越高,反应越快,60、90、120和150℃下地面交联酸与灰岩的反应速率常数分别为5.68×10^(-8)(mol/L)^(-1.51)/(cm^2·s)、1.94×10^(-7)(mol/L)^(1.03)/(cm^2·s)、2.76×10^(-7)(mol/L)^(-0.72)/(cm^2·s)和1.62×10^(-6)(mol/L)^(-0.42)/(cm^2·s),反应级数分别为1.51、1.03、0.72和0.42;与常规胶凝酸相比,60℃时地面交联酸的反应速率常数小1个数量级,120℃时小2个数量级,缓速性优良,体现了在高温深井碳酸盐岩油藏酸压的优势,对增大酸压有效作用距离更为有利。The reaction kinetic experiments between a surface cross-linked acid and Syria limestone were conducted by using a rotating disc at temperatures of 60℃,90℃,120℃ and 150℃.Reaction kinetic equations were deduced to demonstrate the reaction characteristics of surface cross-link acid and limestone from target layer of Syria at corresponding temperatures.The results indicated that experiment temperature was an important influence factor on the reaction rate.The higher temperature,the faster reaction was.Corresponding reacting rate constant of the acid and limestone were 5.68×10^-8（mol/L）^-1.51/（cm^2·s）,1.94×10^-7（mol/L）^1.03（cm^2·s）,2.76×10^-7（mol/L）^0.72/（cm^2·s） and 1.62×10^-6（mol/L）^-0.42（cm^2·s）,and the reacting orders were 1.51,1.03,0.72 and 0.42 respectively at above temperatures.The reacting rate constant of surface cross-link acid was smaller about 1 order of magnitude than that of conventional gelling acid at 60℃,and 2 order of magnitude at 120℃ compared with earlier experiment results,which showed the better retarding performance.Therefore,the surface cross-linked acid possessed the advantages of acid fracturing stimulation in high temperature deep well of carbonate reservoirs in aspect of increasing the effective acid-etched distance.

关 键 词：地面交联酸 灰岩 反应动力学 反应速率常数 碳酸盐岩油藏 

分 类 号：TE357.12[石油与天然气工程—油气田开发工程]