致密油藏采出水结垢趋势和配伍性研究  

Study on scale formation trend and compatibility of produced water in tight reservoir

作　　者：葛仙娥 单巧利 张巧生 王通 崔磊 GE Xian-e;SHAN Qiao-li;ZHANG Qiao-sheng;WANG Tong;CUI Lei(Shanxi Yuyang Petroleum Technology Engineering Co.,Ltd.,Xi′an 710018,China;National Engineering Laboratory of Low Permeability Oil and Gas Field Exploration and Development,Xi′an Changqing Technology Engineering Co.,Ltd.,Xi′an 710018,China)

机构地区：[1]陕西宇阳石油工程科技工程有限公司,西安710018 [2]低渗透油气田勘探开发国家工程实验室西安长庆科技工程有限责任公司,西安710018

出　　处：《工业用水与废水》2021年第4期25-29,共5页Industrial Water & Wastewater

摘　　要：为实现致密油藏某层采出水有效回注,在了解致密油藏某层采出水水质特点的基础上,采用ScaleChem软件对致密油藏某层采出水、侏罗系采出水、地下水结垢类型和结垢量随温度的变化趋势进行分析,并对各水样混合的配伍性进行评价。研究结果表明,致密油藏某层采出水结垢量大,结垢类型为BaSO4、CaCO3,与侏罗系采出水和地下水混合形成的水样结垢量均较多,配伍性差。改性后致密油藏某层采出水与侏罗系采出水的配伍性优于致密油藏某层采出水与地下水的配伍性。In order to achieve an effective injection of produced water in a certain layer of tight reservoir,on the basis of understanding the characteristics of produced water in a certain layer of tight reservoir,the variation trends of scaling types and quantity of certain layer of tight reservoir produced water,Jurassic produced water and groundwater along with temperature were analyzed by ScaleChem software,meanwhile,the compatibility of water samples mixture were also analyzed.The study results showed that,produced water from a certain layer of tight reservoir has a large amount of scaling,and the types of the scaling were BaSO4 and CaCO3.The amount of the scaling formed by mixing Jurassic produced water with groundwater was large,and the compatibility was poor.After the modification,the compatibility of the produced water from a certain layer of tight reservoir with Jurassic produced water was better than that of the produced water from a certain layer of tight reservoir with underground water.

关 键 词：致密油藏 采出水 结垢 水质改性 注水 配伍 

分 类 号：TP319[自动化与计算机技术—计算机软件与理论] TQ085[自动化与计算机技术—计算机科学与技术]