超声波法测定水泥浆胶凝强度实验研究  

Experimental Researches on Measuring Cement Gel Strength Using Ultrasonic Wave

作　　者：姜林林[1] 王瑞和[2] 姜林甫[3] 樊户伟[4] 李楠[1] 

机构地区：[1]中国石油大学(华东)石油工程学院,山东东营257061 [2]中国石油大学(华东),山东东营257061 [3]中国石化胜利油田分公司东辛采油厂,山东东营257094 [4]中国石化胜利油田分公司技术检测中心,山东东营257000

出　　处：《石油钻探技术》2010年第1期4-7,共4页Petroleum Drilling Techniques

基　　金：国家高技术研究发展计划("863"计划)项目"深水固井技术基础研究"(编号:2006AA09Z340)部分研究成果

摘　　要：针对目前水泥浆静胶凝强度测试装置的不足,在改进了机械剪切法测定水泥浆胶凝强度实验装置的基础上,利用机械测定与无损超声波测定的方法,研究了固井水泥浆的胶凝强度发展规律及对应的超声波声速和声幅变化规律。研究表明,随着水泥浆水化的进行,水泥浆胶凝强度的增大先缓慢后迅速;超声波声速的增长先快速后缓慢;超声波声幅的降低先快速后缓慢;采用超声波声幅衰减对胶凝强度进行指数函数回归拟合效果较好,相对标准差和平均相对误差分别为10.20%和7.06%。The experimental device for measuring the gel strength of cement slurry was improved considering shortcomings of current devices. The gel strength, corresponding acoustic velocity, and the change rule of acoustic amplitude during the hydration of cement slurry were investigated by mechanical and ultrasonic measurement. The results show that, during the hydration of cement slurry, the gel strength increases slowly and then increases quickly; the acoustic velocity increases quickly and then increases slowly; the acoustic amplitude decreases quickly and then decreases slowly. The gel strength can be better fitted with the acoustic amplitude by exponential function, its relative standard deviation is 10.2%, and its average fractional error is 7.06%.

关 键 词：水泥浆 胶凝强度 超声波 声幅衰减 数学分析 

分 类 号：TE256.7[石油与天然气工程—油气井工程]