【作者】 徐世辉；

【导师】 张景富；

【作者基本信息】 大庆石油学院 ， 油气井工程， 2009， 硕士

【摘要】 含有氯离子和碳酸氢根离子的油田地层水和采出液与固井水泥石接触时,能够通过复杂的物理化学作用造成水泥石的腐蚀,导致水泥石内部物质组成、微观结构等发生变化,从而改变水泥石性能,影响水泥石的致密程度和封固效果。本论文以提高三次采油试验区调整井固井质量为目的,在调查和分析部分典型区块采出液水质组成及特点的基础上,利用高温高压腐蚀仪、扫描电子显微镜等仪器设备,开展了氯离子和碳酸氢根离子对油井水泥腐蚀机理及规律研究,分析了油井水泥对氯离子的固化和吸附作用及氯离子和碳酸氢根离子对油井水泥产生的腐蚀作用特征;探讨了氯离子和碳酸氢根离子共同作用下对油井水泥的腐蚀情况,研究了共同腐蚀下对油井水泥强度的影响情况,通过两者协同腐蚀情况分析,为设计抗腐蚀水泥浆体系提供了基础。更多还原

【Abstract】 When the formation water of oil-field and produced water which were rich in loride ions and bicarbonate ions contacted with oilwell cement mantale, the oilwell cement were corroded by comprehensive physicochemical actions, which resulted in changes of material composition and microstructure of oilwell cement, and further the characteristics of oilwell cement were changed, and the degree of densification and cementing emotion were decreased. In this paper, improving the cement job quality of adjustment wells in experimental area of TOR were focused on; the examination and analyses of the component and characteristics of the produced water in partial typical blocks were based on; the study of corrosion mechanism and law of oilwell cement by chloride ions and bicarbonate ions were developed, using such devices as the High Temperature and High Pressure Corrosion Miriam, scanning electron microscopy (SEM) etc. The chloride ions and bicarbonate ions solidification and adsorption characteristics of oilwell cement were analyzed; and the corroding oil well cement; and corrosion by the cooperative actions by chloride ions and bicarbonate ions were researched on, and the affects on compressive strength of corrosion oilwell cement were studied, which would provide bases for designing the anticorrosion cement slurry system.更多还原