镇原油田结垢趋势预测及防垢技术  

Scaling Trend Prediction and Scale Prevention of Zhenyuan Oilfield

作　　者：赵海勇 刘曼 李诚 丁高翔 都伟超 ZHAO Haiyong;LIU Man;LI Cheng;DING Gaoxiang;DU Weichao(Eleventh Oil Production Plant,Changqing Oilfield Branch Company,PetroChina,Qingyang,Gansu 745000,P R of China;Production and Operation Department,Karamay Petrochemical Co.,Ltd.,PetroChina,Karamay,Xinjiang 834000,P R of China;College of Chemistry and Chemical Engineering Shaanxi Key Laboratory of Environmental Pollution Control and Reservoir Protection in Oil and Gas Field,Xi’an Shiyou University,Xi’an,Shaanxi 710065,P R of China)

机构地区：[1]中国石油长庆油田分公司第十一采油厂,甘肃庆阳745000 [2]中国石油克拉玛依石化有限责任公司生产运行处,新疆克拉玛依834000 [3]西安石油大学化学化工学院,陕西省油气田环境污染控制技术与储层保护重点实验室,陕西西安710065

出　　处：《油田化学》2022年第1期140-144,共5页Oilfield Chemistry

基　　金：陕西省教育厅科研计划项目“地热井废弃钻井液高效处理技术研究”(项目编号21JP098)。

摘　　要：镇原油田管线及储罐结垢现象异常严重,且无有效的防垢措施。首先分析了镇原油田方山作业区合53区域和演116区域2种水样的水型,然后利用结垢预测软件OLI ScaleChem预测了混合水样的结垢趋势并通过室内实验进行了验证。针对混合水产生的SrSO_(4)和CaCO_(3)垢,研发了由马来酸酐(MA)和甲基丙烯酸甲酯(MMA)共聚反应而成的硫酸锶(SrSO_(4))防垢剂P(MA/MMA)以及羧甲基化菊粉碳酸钙(CaCO_(3))防垢剂CMI,并考察了二者复配后对混合水样的防垢性能,并分析了防垢机理。结果表明,镇原油田方山作业区合53和演116水样中含有较多的成垢离子,具有结垢倾向。利用OLI ScaleChem结垢预测软件预测结果表明合53水样和演116水样体积比为8∶2时成垢量高达587 mg/L,垢型为CaCO_(3)和SrSO_(4)。试验验证结果与预测结果基本相符。CMI与P(MA/MMA)复配比为4∶6的复配防垢剂CQ-SI,加量为150 mg/L时对混合水样的防垢率可高达93.5%。CQ-SI通过与成垢阳离子形成螯合物而抑制垢的生成,并通过离散、分离垢样发挥优异的防垢效果。The scaling of pipelines and storage tanks in Zhenyuan oilfield is very serious,and there are no effective anti-scaling measures.Firstly,the water types of two water samples in He 53 and Yan 116 in Fangshan operation area of Zhenyuan oilfield were analyzed,and then the scaling trend of mixed water samples was predicted by using the scaling prediction software OLI ScaleChem,which was verified by indoor experiments.Carboxymethylated inulin calcium carbonate(CaCO_(3))scale inhibitor CMI,and strontium sulfate(SrSO_(4))scale inhibitor P(MA/MMA)was prepared.The anti-scaling performance of the P(MA/MMA)and CMI on mixed water was studied,and its anti-scaling machine was analyzed.Results showed that there were lots of scaling ions in He 53 and Yan 116 water in Fangshan of Zhenyuan oilfield,and there were scaling tendency when they are mixed.Prediction results showed that when the volume ratio of He 53 to yan116 water was 8∶2,the scale amount was as high as 587 mg/L,and the scale types were CaCO_(3) and SrSO_(4).The experimental results were basically consistent with the predicted results.The scale inhibition rate of compound scale inhibitor CQ-SI,the mass ratio of CMI to P(MA/MMA)bening of 4∶6,could be as high as 93.5%when the dosage was 150 mg/L.CQ-SI inhibits the formation of scale by forming chelates with scaling cations,and plays an excellent anti-scaling effect by dispersing and separating scale samples.

关 键 词：结垢趋势预测 OLI ScaleChem 镇原油田 防垢剂 羧甲基菊粉 

分 类 号：TE48[石油与天然气工程—油气田开发工程]