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抗超高温水基钻井液用聚合物降滤失剂的研制

高伟,  李银婷,  余福春,  李双贵,  毛惠

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文章导航 > 钻井液与完井液  > 2021 >  38(2): 146-151,157
高伟, 李银婷, 余福春, 李双贵, 毛惠. 抗超高温水基钻井液用聚合物降滤失剂的研制[J]. 钻井液与完井液, 2021, 38(2): 146-151,157. doi: 10.3969/j.issn.1001-5620.2021.02.003
引用本文: 高伟, 李银婷, 余福春, 李双贵, 毛惠. 抗超高温水基钻井液用聚合物降滤失剂的研制[J]. 钻井液与完井液, 2021, 38(2): 146-151,157. doi: 10.3969/j.issn.1001-5620.2021.02.003
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GAO Wei, LI Yinting, YU Fuchun, LI Shuanggui, MAO Hui. Development of A Polymer Filter Loss Reducer for Ultra-High Temperature Water Base Drilling Fluids[J]. DRILLING FLUID & COMPLETION FLUID, 2021, 38(2): 146-151,157. doi: 10.3969/j.issn.1001-5620.2021.02.003
Citation: GAO Wei, LI Yinting, YU Fuchun, LI Shuanggui, MAO Hui. Development of A Polymer Filter Loss Reducer for Ultra-High Temperature Water Base Drilling Fluids[J]. DRILLING FLUID & COMPLETION FLUID, 2021, 38(2): 146-151,157. doi: 10.3969/j.issn.1001-5620.2021.02.003
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抗超高温水基钻井液用聚合物降滤失剂的研制

doi: 10.3969/j.issn.1001-5620.2021.02.003

  • 1. 中国石油化工股份有限公司西北油田分公司工程技术研究院, 乌鲁木齐 830011;

  • 2. 中国石油化工集团公司碳酸盐岩缝洞型油藏提高采收率重点实验室, 乌鲁木齐 830011;

  • 3. 中石化胜利石油工程有限公司塔里木分公司, 新疆库尔勒 841000;

  • 4. 成都理工大学能源学院, 成都 610059

基金项目: 

中国石化重点科技项目群“顺北特深层断裂破碎带区块安全成井关键技术”(PE19004)；中国石化重点科技项目“顺北一区5号断裂带提质提速钻完井技术研究”（P20002）

详细信息
    作者简介:

    高伟,副研究员,1983年生,现在主要从事超深井钻井液工艺体系设计及技术成果推广工作。电话18963857045;E-mail:maohui17@cdut.edu.cn

  • 中图分类号: TE254.4

Development of A Polymer Filter Loss Reducer for Ultra-High Temperature Water Base Drilling Fluids

  • 1. Petroleum Engineering Technology Research Institute, Sinopec Northwest Oilfield Company, Urumqi, Xinjiang 830011;

  • 2. Key Laboratory of Enhanced Recovery for Fracture-Cave Oil Reservoir, Sinopec, Urumqi, Xinjiang 830011;

  • 3. Tarim Branch of Petroleum Engineering Co., Ltd., Sinopec Shengli Oilfield Company, Korla, Xinjiang 841000;

  • 4. College of Energy Resources, Chengdu University of Technology, Chengdu, Sichuan 610059

    摘要
  • 摘要: 以丙烯酰胺、2-丙烯酰胺-2-甲基丙磺酸和甲基丙烯酸二甲氨基乙酯为聚合反应单体，以偶氮二异丁脒盐酸盐为引发剂，通过自由基聚合反应，室内研制出了一种新型水基钻井液用抗超高温聚合物降滤失剂CLG-240。借助红外光谱分析、凝胶色谱分析和热重分析，分别表征了降滤失剂CLG-240的分子结构,确定了合成产物的相对分子质量和热稳定性。综合评价了CLG-240在钻井液中的基本性能。结果表明，降滤失剂CLG-240的数均分子量约为6.461×105，重均分子量约为7.345×105；在室温～315℃范围内该聚合物的热失重总量约为26.5%，表明其自身便具有良好的抗温、耐温特性。室内研究表明，无论是在淡水实验浆还是在盐水实验浆中，降滤失剂CLG-240均具有较好的降滤失特性，同时还具有较好的泥页岩抑制特性；其在钻井液体系中具有良好的耐超高温性能，在低密度钻井液中的抗温能力达248℃，而在高密度钻井液中的抗温能力达220℃。

     

    Abstract: A new polymer filter loss reducer CLG-240 was developed for use in water base drilling fluids in ultra-high temperature operations. CLG-240 was synthesized with acrylamide, 2-acrylamide-2-methyl propane sulfonic acid and dimethylaminoethyl methacrylate as the monomers, and 2,2'-azobis[2-methylpropionamidine] dihydrochloride as the initiator through free radical polymerization. Using IR spectroscopy, gel chromatography analysis and thermogravimetric analysis, the molecular structure of CLG-240 was characterized and the relative molecular weight and thermal stability of the synthesized product determined. Comprehensive evaluation of the performance of CLG-240 in water base drilling fluids showed that CLG-240 has a number-average molecular weight of 6.461×105, weight-average molecular weight of 7.345×105. Total thermal loss of weight between room temperature and 315 ℃ is 26.5%, demonstrating that CLG-240 has good high temperature resistance and tolerance. Furthermore, CLG-240 showed good filtration control performance both in freshwater base drilling fluids and saltwater base drilling fluids, as well as good shale inhibitive capacity. Laboratory study showed that CLG-240 is resistant to ultra-high temperatures in drilling fluids; in low density drilling fluids, CLG-240 functions normally at temperature up to 248 ℃, while in high density drilling fluids, this temperature is 220 ℃.

     

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  • 收稿日期:  2020-11-18

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