纤维素酶对油田回注水系统的阻垢研究

发布时间：2018-06-13 21:54

本文选题：纤维素酶 + 油田回注水　；参考：《西安理工大学学报》2016年04期

【摘要】：本文采用人工配制的油田回注水,模拟研究纤维素酶添加后对管材结垢的影响。试验采用四个平行反应器,对比研究了纤维素酶浓度对模拟油田回注水中Ca~(2+)浓度和总碱度的影响,同时采用X射线衍射仪分析了纤维素酶浓度对模拟回注水系统结垢产物的影响,此外还采用扫描电镜观察了不同纤维素酶浓度下,模拟油田回注水系统结垢产物的晶形差异,并初步探讨了纤维素酶对回注水系统阻垢的可能机理。结果表明:当纤维素酶的质量比浓度为0~1.05%时,纤维素酶对铸铁试样片的阻垢随着酶浓度的提高而增强;在0.349%(w/w)的酶浓度条件下,结垢产物为CaCO_3,随着酶浓度的继续升高,晶体态结垢产物未能检出。扫描电镜结果表明:酶添加在一定程度上会引起结垢产物的晶格畸变,这可能是纤维素酶对模拟回注水系统阻垢的机理之一。
[Abstract]:In this paper, the effect of cellulase addition on pipe scaling was simulated by artificial oilfield water injection. The effects of cellulase concentration on the concentration and total alkalinity of Caanzao 2 in simulated oilfield water injection were studied in four parallel reactors. At the same time, the effect of cellulase concentration on scaling product of simulated water injection system was analyzed by X-ray diffractometer. In addition, the crystal shape difference of scale product of simulated oil field water injection system under different cellulase concentration was observed by scanning electron microscope. The possible mechanism of scale inhibition by cellulase was also discussed. The results showed that when the specific concentration of cellulase was 0 ~ 1.05, the scale inhibition of cast iron specimen increased with the increase of enzyme concentration, and the scaling product was CaCO3 at the concentration of 0.349w / w, which continued to increase with the increase of enzyme concentration. The crystalline scaling products could not be detected. The results of SEM show that the lattice distortion of scaling products can be caused by adding enzyme to some extent, which may be one of the mechanisms of inhibition of scale by cellulase on simulated water injection system.
【作者单位】：西安建筑科学大学环境与市政工程学院;
【基金】：国家自然科学基金青年基金资助项目(51108368) 榆林市科技计划资助项目
【分类号】：TE934.1

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