磷石膏地层用钙基成膜环保冲洗液研究与应用
投稿时间:2022-04-13  修订日期:2022-06-21  点此下载全文
引用本文:李田周,陶士先,熊正强.磷石膏地层用钙基成膜环保冲洗液研究与应用[J].钻探工程,2023,50(1):49-54.
LI Tianzhou,TAO Shixian,XIONG Zhengqiang. Development and application of calcium-based film-forming environment-friendly drilling fluid for phosphogypsum formation[J]. Drilling Engineering, 2023,50(1):49-54.
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作者单位E-mail
李田周 商洛西北有色七一三总队有限公司陕西 商洛 726000 527024235@qq.com 
陶士先* 北京探矿工程研究所北京 100083 13641250082@139.com 
熊正强 北京探矿工程研究所北京 100083 xiongzq1012@126.com 
基金项目:国家重点研发计划课题“绿色环保冲洗液体系与废浆处理技术”(编号:2018YFC0603406)
中文摘要:针对磷石膏地层水平孔钻探工程存在松散磷石膏层孔壁坍塌、磷石膏遇水分散影响取心质量、冲洗液受钙侵导致其性能恶化以及钻孔轨迹控制困难等技术难题,同时满足绳索取心钻进工艺要求,室内针对性地开展了冲洗液技术研究,分析了磷石膏地层水平孔钻进对冲洗液性能的要求,并在室内处理剂优选、配方优化的基础上,研发了钙基成膜环保冲洗液体系,并成功应用于贵州某磷石膏矿尾矿库中的水平孔钻探工程。室内试验及现场应用结果表明,该体系具有良好的抗钙侵能力,滤失量低,流变性能相对稳定;能够在岩心表面形成相对坚固的保护膜,强化磷石膏孔壁,有效预防孔壁坍塌;保护岩心免受冲洗液侵蚀,提高了取心质量。此外,该体系由无毒和易降解的环保材料组成,具有良好的环保性能。
中文关键词:钙基成膜环保冲洗液  磷石膏地层  水平孔钻进  绳索取心  取心质量
 
Development and application of calcium-based film-forming environment-friendly drilling fluid for phosphogypsum formation
Abstract:Regarding to the technical problems of loose phosphogypsum hole wall collapse, dispersion of phosphogypsum encountering water, calcium contamination of drilling fluid and difficulty in drilling trajectory control during horizontal hole drilling in phosphogypsum formation, the research on drilling fluid technology was carried out indoors with analysis of the requirements of horizontal hole drilling in phosphogypsum formation for the performance of drilling fluid. The calcium-based film-forming environment-friendly drilling fluid was developed and successfully applied to horizontal hole drilling at a depository of phosphogypsum tailings in Guizhou. Laboratory test and field application results indicate that the system has good resistance to calcium intrusion, low filtration loss, and relatively stable rheological properties. A relatively strong protective film can be formed on the core surface, which can effectively prevent the hole wall collapse and protect core. In addition, the system consisting of non-toxic and biodegradable materials has good environment protection performance.
keywords:calcium-based film-forming environment-friendly drilling fluid  phosphogypsum  horizontal hole drilling  wire-line coring  coring quality
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