特种油气藏 ›› 2023, Vol. 30 ›› Issue (2): 153-160.DOI: 10.3969/j.issn.1006-6535.2023.02.022

• 钻采工程 • 上一篇    下一篇

非放射性微量金属物质示踪剂研制及应用

张永飞1, 李育1, 张敏1, 刘海峰2, 陈虎2, 史胜龙3, 解宏超3, 高源3   

  1. 1.陕西延长油田股份有限公司勘探开发技术研究中心,陕西 延安 716000;
    2.延安鹏珅和石油工程技术服务有限公司,陕西 延安 716000;
    3.青岛大地新能源技术研究院,山东 青岛 266000
  • 收稿日期:2022-09-01 修回日期:2022-12-07 出版日期:2023-04-25 发布日期:2023-05-29
  • 通讯作者: 解宏超(1995—),男,工程师,2017年毕业于山东科技大学安全工程专业,2020年毕业于该校安全工程专业,获硕士学位,现从事油气田开发方面的研究工作。
  • 作者简介:张永飞(1986—),男,高级工程师,2010年毕业于西安石油大学石油工程专业,2016年毕业于该校石油工程专业,获硕士学位,现从事油气田开发工作。
  • 基金资助:
    油气藏地质及开发工程国家重点实验室开放基金“页岩气藏新型钻井储层保护及作用机理研究”(PLC20190703);延长油田股份有限公司勘探开发技术研究中心科技项目“分段压裂产能跟踪及评价技术研究与应用”(ycsy2019ky-B-3)

Preparation and Application of Non-radioactive Trace Metal Tracer

Zhang Yongfei1, Li Yu1, Zhang Min1, Liu Haifeng2, Chen Hu2, Shi Shenglong3, Xie Hongchao3, Gao Yuan3   

  1. 1. Exploration and Development Technology Research Center, Shaanxi Yanchang Oilfield Co., Ltd, Yan'an, Shaanxi 716000, China;
    2. Yan'an Pengshenhe Petroleum Engineering Technology Service Co., Ltd., Yan'an, Shaanxi 716000, China;
    3. Qingdao Dadi Institute of New Energy Technologies, Qingdao, Shandong 266000, China
  • Received:2022-09-01 Revised:2022-12-07 Online:2023-04-25 Published:2023-05-29

摘要: 针对常规化学示踪剂种类少、有毒害、检测精度低,PLT测井技术不能监测水平井、大斜度井产液剖面的局限性,利用地层中不存在或含量极低的非放射性微量金属物质制备了微量金属物质示踪剂,对其性能进行了评价,并通过优化工艺流程,建立数据分析方法,形成了系统的非放射性微量金属物质示踪剂监测技术,并在现场进行了应用。结果表明:非放射性微量金属物质示踪剂耐温为200 ℃,耐盐为25×104mg/L,在pH值为1和14的溶液中能保持澄清状态,并不会被储层中的黏土物质吸附,检测精度高达10-14kg/L。该示踪剂可有效监测产液剖面,并可分析压裂裂缝形态,评价压裂效果。使用该技术对延长油田一口水平井产液情况进行了监测,通过示踪剂归一化产出曲线分析了裂缝发育情况,为压裂效果评价提供了技术数据。该技术可为产液剖面监测、压裂裂缝发育状况评测提供技术支持。

关键词: 示踪剂, 微量金属物质, 非放射性, 分段压裂, 裂缝形态, 产液剖面

Abstract: In view of the limitations that conventional chemical tracers are of few types, toxic and low in detection accuracy and PLT logging technology fails to monitor the produced fluid profile of horizontal wells and highly inclined wells, trace metal tracer was prepared by using non-radioactive trace metal substances that do not exist or exist in very low content in the formation, and its performance was evaluated. Meanwhile, data analysis method was developed with optimized process flow. A systematic technology for monitoring non-radioactive trace metal tracer was developed and applied in the field. The results show that the non-radioactive trace metal tracer had a temperature resistance of 200 ℃ and a salt resistance of 25×104mg/L. It could remain clear in the solutions with pH values of 1 and 14, and would not be adsorbed by clay substances in the reservoir. The detection accuracy was up to 10-14kg/L. The tracer was effective in monitoring the produced liquid profile, analyzing the fracture morphology and evaluating the fracturing effect. This technology was used to monitor the fluid production of a horizontal well in Yanchang Oilfield, and the fracture development was analyzed by the normalized output curve of the tracer, providing technical data for the evaluation of fracturing effect. This technology provides technical support for produced fluid profile monitoring and fracture development evaluation.

Key words: tracer, trace metal substance, non-radioactive, staged fracturing, fracture morphology, produced fluid profile

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