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作者（2019）在《纳米聚合物微球在裂缝型碳酸盐岩储层油/水选择性封堵性能评价（英文）》一文中研究指出：目的:对聚合物微球(PM)在碳酸盐岩基质岩心与裂缝型岩心中封堵效果和油/水选择性进行综合评价。创新点:1.制作裂缝型碳酸盐岩模型并进行等效缝宽度计算;2.显微评价PM的水化膨胀特性;3.进行聚合物微球深层封堵性能评价;4.进行聚合物微球油/水选择性封堵评估。方法:采用纳米级聚合物微球溶液,并以哈萨克斯坦北特鲁瓦裂缝型碳酸盐岩油藏储层温度(54°C)和碳酸盐岩天然裂缝尺寸(0.02～0.03 mm)为实验条件;通过碳酸盐岩裂缝型岩心模型制作、PM基本性能测试、岩心流动实验以及扫描式电子显微镜(SEM)和能谱分析仪(EDS)等微观手段,对PM在碳酸盐岩基质岩心与裂缝型岩心中封堵效果和油/水选择性进行综合评价。结论:1. PM在水中具有良好的分散性和溶胀能力,3 d溶胀率高达300%以上,且对高矿化度盐水具有较强的耐受性。2.PM在基质岩心和裂缝型岩心均具有较好的深部封堵效果;30cm长岩心模型封堵实验表明,封堵后的分段压降均匀分布,岩心基质和裂缝型岩心封堵后的残余阻力系数介于3.29～5.88,封堵率介于69.58%～83.01%,且残余阻力系数越大,封堵率越高;PM在岩心中水化膨胀后可形成有效封堵,且平均封堵率高达70%以上。3.PM封堵的油/水选择系数Rw/o均小于1.0且接近于0,说明PM具有较强的油/水选择性封堵效果;这主要是因为油/水与PM作用机理不同;PM遇水后溶胀且表面粘性增加而粘连在碳酸盐岩壁面,并且不同微球之间相互团聚形成较大体积的颗粒,因此增加了对注入水的封堵效果;PM在煤油中则性能稳定,不产生溶胀和粘连效果,因此对反向注入煤油具有较低的封堵效果。4. SEM成像结果分析认为,PM在岩心喉道或天然微裂缝中的封堵机理主要包括三个方面:(1)PM单体在岩石颗粒表面吸附,降低喉道的尺寸,同时多个单颗粒小球增大了层内比表面积、降低了层内渗透率;(2)PM溶胀后在小尺寸孔道形成了机械捕集;(3)多个PM单体颗粒团聚成网状结构堵塞了大孔道。EDS元素分析技术进一步验证了其作用机理。
Abstract
mu de :dui ju ge wu wei qiu (PM)zai tan suan yan yan ji zhi yan xin yu lie feng xing yan xin zhong feng du xiao guo he you /shui shua ze xing jin hang zeng ge ping jia 。chuang xin dian :1.zhi zuo lie feng xing tan suan yan yan mo xing bing jin hang deng xiao feng kuan du ji suan ;2.xian wei ping jia PMde shui hua peng zhang te xing ;3.jin hang ju ge wu wei qiu shen ceng feng du xing neng ping jia ;4.jin hang ju ge wu wei qiu you /shui shua ze xing feng du ping gu 。fang fa :cai yong na mi ji ju ge wu wei qiu rong ye ,bing yi ha sa ke si tan bei te lu wa lie feng xing tan suan yan yan you cang chu ceng wen du (54°C)he tan suan yan yan tian ran lie feng che cun (0.02～0.03 mm)wei shi yan tiao jian ;tong guo tan suan yan yan lie feng xing yan xin mo xing zhi zuo 、PMji ben xing neng ce shi 、yan xin liu dong shi yan yi ji sao miao shi dian zi xian wei jing (SEM)he neng pu fen xi yi (EDS)deng wei guan shou duan ,dui PMzai tan suan yan yan ji zhi yan xin yu lie feng xing yan xin zhong feng du xiao guo he you /shui shua ze xing jin hang zeng ge ping jia 。jie lun :1. PMzai shui zhong ju you liang hao de fen san xing he rong zhang neng li ,3 drong zhang lv gao da 300%yi shang ,ju dui gao kuang hua du yan shui ju you jiao jiang de nai shou xing 。2.PMzai ji zhi yan xin he lie feng xing yan xin jun ju you jiao hao de shen bu feng du xiao guo ;30cmchang yan xin mo xing feng du shi yan biao ming ,feng du hou de fen duan ya jiang jun yun fen bu ,yan xin ji zhi he lie feng xing yan xin feng du hou de can yu zu li ji shu jie yu 3.29～5.88,feng du lv jie yu 69.58%～83.01%,ju can yu zu li ji shu yue da ,feng du lv yue gao ;PMzai yan xin zhong shui hua peng zhang hou ke xing cheng you xiao feng du ,ju ping jun feng du lv gao da 70%yi shang 。3.PMfeng du de you /shui shua ze ji shu Rw/ojun xiao yu 1.0ju jie jin yu 0,shui ming PMju you jiao jiang de you /shui shua ze xing feng du xiao guo ;zhe zhu yao shi yin wei you /shui yu PMzuo yong ji li bu tong ;PMyu shui hou rong zhang ju biao mian nian xing zeng jia er nian lian zai tan suan yan yan bi mian ,bing ju bu tong wei qiu zhi jian xiang hu tuan ju xing cheng jiao da ti ji de ke li ,yin ci zeng jia le dui zhu ru shui de feng du xiao guo ;PMzai mei you zhong ze xing neng wen ding ,bu chan sheng rong zhang he nian lian xiao guo ,yin ci dui fan xiang zhu ru mei you ju you jiao di de feng du xiao guo 。4. SEMcheng xiang jie guo fen xi ren wei ,PMzai yan xin hou dao huo tian ran wei lie feng zhong de feng du ji li zhu yao bao gua san ge fang mian :(1)PMchan ti zai yan dan ke li biao mian xi fu ,jiang di hou dao de che cun ,tong shi duo ge chan ke li xiao qiu zeng da le ceng nei bi biao mian ji 、jiang di le ceng nei shen tou lv ;(2)PMrong zhang hou zai xiao che cun kong dao xing cheng le ji xie bu ji ;(3)duo ge PMchan ti ke li tuan ju cheng wang zhuang jie gou du sai le da kong dao 。EDSyuan su fen xi ji shu jin yi bu yan zheng le ji zuo yong ji li 。
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论文作者分别是来自Journal of Zhejiang University-Science A(Applied Physics & Engineering)的，发表于刊物Journal of Zhejiang University-Science A(Applied Physics & Engineering)2019年09期论文，是一篇关于纳米聚合物微球论文,裂缝型岩心论文,封堵率论文,水选择性论文,封堵机理论文,Journal of Zhejiang University-Science A(Applied Physics & Engineering)2019年09期论文的文章。本文可供学术参考使用，各位学者可以免费参考阅读下载，文章观点不代表本站观点，资料来自Journal of Zhejiang University-Science A(Applied Physics & Engineering)2019年09期论文网站，若本站收录的文献无意侵犯了您的著作版权，请联系我们删除。
标签：纳米聚合物微球论文; 裂缝型岩心论文; 封堵率论文; 水选择性论文; 封堵机理论文; Journal of Zhejiang University-Science A(Applied Physics & Engineering)2019年09期论文;