油基水泥浆水化程度及强度变化规律  

Study on hydration of oil based cement slurry and its strength development

作　　者：宋碧涛[1] 姚晓[1] 许仲梓[1] 

机构地区：[1]南京工业大学材料科学与工程学院,江苏南京210009

出　　处：《南京工业大学学报（自然科学版）》2004年第4期1-4,共4页Journal of Nanjing Tech University(Natural Science Edition)

基　　金："863"基金资助(2003AA327120)

摘　　要：使用油基水泥浆堵水是油田开发中后期控水稳油的一项重要方法,但油基水泥浆水化过程以及作用机理的研究很少。研究了油基水泥浆在不同水浆质量比下的强度发展,并通过水泥石试样氢氧化钙含量分析研究了油基水泥浆水化过程。研究结果表明:水浆质量比为0 2的油基水泥浆,其早期强度在53℃和83℃2种温度条件下均出现峰值;水浆质量比为0 1和0 3的油基水泥浆在53℃下后期强度发展有加速趋势,接近和超过了水浆质量比为0 2的油基水泥浆,83℃下油基水泥浆水化后强度比53℃下高,后期强度发展平稳。分析了温度、盐浓度对水泥浆水化程度和水泥石强度的影响。并通过氢氧化钙含量分析了油基水泥浆水化程度。Oil based cement slurry is always used as a valuable oil well water control material in the middle and later production stage. But the hydration procedure and mechanism was rarely studied. The compressive strength development of oil based slurry was studied and the hydration degree was investigated by analyzing the calcium hydroxide content in hardened cement. The slurry with water slurry ratio of 0.2 has the peak compressive strengthes both at 53 ℃ and at 83 ℃. The specimens with water slurry ratio of 0.1 and 0.3 have an accelerating tendency in compressive strengthes development and their later strengthes reach or even exceed that of the specimen with water slurry ratio of 0.2. Specimen cured at 83℃ has higher compressive strength than that at 53℃ and its later strength increases smoothly.Similarly,it is described that the temperature,salinity and some other factors affect the hydration degree and hardened cement strength.Cement hydration degree is analyzed by calcium hydroxide content.

关 键 词：油基水泥浆 水化程度 抗压强度 堵水材料 水泥石 

分 类 号：TE256.7[石油与天然气工程—油气井工程]