磺化处理剂的生物毒性来源及其无毒化处理方法
DOI:
作者:
作者单位:

1.中石油塔里木油田分公司;2.长江大学化学与环境工程学院

作者简介:

通讯作者:

中图分类号:

TE254.3???

基金项目:

勘探新区钻井提速提效及油田钻井液技术攻关与试验


The biological toxicity source of sulfide agents and some correspondent treatment methods
Author:
Affiliation:

1.College of Chemistry &2.Environmental Engineering,Yangtze University

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    深井水基钻井液常用的磺化处理剂具有显著生物毒性,且未能明确其毒性来源,导致此类处理剂的现场应用受到相关环保法规的限制。为探明磺化处理剂的生物毒性来源,选取典型磺化处理剂,分析了处理剂的官能团、分子量与分子结构、重金属与有机毒害物含量、颗粒形貌等理化特征与其生物毒性间的关系。结果表明,磺化处理剂所含的磺酸基团无生物毒性,其分子量与分子结构均与其毒性无关,所含的微量重金属与有机毒害物亦不足以造成处理剂毒性超标。通过半透膜透析除去残留的磺化剂,后使用索氏提取器分离出处理剂中的水溶性组分,实现了处理剂的生物无毒,并证明其生物毒性主要由残留的磺化剂——亚硫酸氢钠与焦亚硫酸钠,以及在水中具有良好水化分散性的固相大颗粒对费氏弧菌的吸附失活效应共同导致。最后,使用自制的MOF对处理剂进行了解聚处理,以处理后的处理剂等量取代磺化钻井液中的磺化处理剂后,钻井液的流变性能基本不变,API与HTHP滤失量仅出现小幅上升,且取代后的体系实现了生物无毒,为磺化处理剂及磺化钻井液的沿用提供了坚实的技术保障。

    Abstract:

    Sulfonated treatments commonly used in deep-well water-based drilling fluids have significant biotoxicity without exact sources, leading to the restriction of environmental protection regulations when used. To solve this problem, the relationship between the physicochemical characteristics (such as functional groups, molecular weight and molecular structure, content of heavy metals and organic poisons, particle morphology) of typical sulfonated treatments and their biotoxicity was analyzed. Results showed that the sulfonic acid groups in agents were not biotoxic, the molecular weight and structure were unrelated to the toxicity, and the traces of heavy metals and organic toxicants were negligible factors. The removal of residue by dialysis through a semi-permeable membrane and the followed separation of water using a Soxhlet extractor makes the treatments biologically non-toxic, further demonstrating the predominate contribution of residual sulfonating agents (sodium bisulfite and sodium metabisulfite) and the adsorptive inactivation of solid-phase large particles dispersed in water on the Vibrio fischeri to the biotoxicity. Finally, depolymerized the sulfonated agent using a homemade MOF and applied in drilling fluid, satisfactorily, the rheological properties, API and HTHP filtration loss in that biologically non-toxicity system were both almost perfectly consistent with the original agents, providing powerful technological support for the application of sulfonated treatments.

    参考文献
    相似文献
    引证文献
引用本文
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期: 2024-03-19
  • 最后修改日期: 2024-04-28
  • 录用日期: 2024-05-06
  • 在线发布日期:
  • 出版日期:
点击这里给我发消息

点击这里给我发消息