作者：郑力文¹, 敖科², 袁琴², 李仲³, 王星¹, 周鑫¹

作者单位：1. 中国测试技术研究院，四川 成都 610021;
2. 捷贝通石油技术集团股份有限公司，四川 成都 610011;
3. 中国石油天然气股份有限公司浙江油田分公司，浙江 杭州 310013

关键词：六氟化硫;标准物质;称量法;油气田示踪剂;定量分析

摘要：

示踪检测技术是油气藏监测中常用的检测技术，而六氟化硫（SF₆）作为气体示踪剂已经广泛应用于油气藏的跟踪探测中。为了能准确定量检测六氟化硫气体示踪剂的浓度值，需要高准确度的六氟化硫气体标准物质。以高纯六氟化硫为原料，高纯氮气为稀释气，采用称量法制备了氮气中六氟化硫气体标准物质，量值水平0.100~10.0 μmol/mol。通过浓度随压力、时间的变化考察了其均匀性和稳定性。实验结果表明，氮气中六氟化硫气体标准物质具有较好的压力均匀性和稳定性，量值准确可靠。使用气相色谱-质谱联用仪对新疆油田玛13X井区M13井组和玛1X井区M61井组的气体样品中示踪剂进行检测分析，采用外标法准确定量了其浓度，得到了示踪剂的产出曲线，确认了该区块注采井的连通关系，结果表明标准物质保证了油气田示踪剂微量浓度定量检测的准确性，为之后提高油气藏采收率提供了理论支持。

Study on the reference material of sulfur hexafluoride (SF₆) and application on quantitative analysis of oil-gas field tracer
ZHENG Liwen¹, AO Ke², YUAN Qin², LI Zhong³, WANG Xing¹, ZHOU Xin¹
1. National Institute of Measurement and Testing Technology, Chengdu 610021, China;
2. Gepetto Oil Technology Group Co., Ltd., Chengdu 610011, China;
3. PetroChina Zhejiang Oilfield Company , Hangzhou 310013, China
Abstract: The tracer detection technology is a commonly used detection technology for oil-gas reservoir monitoring and the sulfur hexafluoride (SF₆) as a gas tracer has been widely used for the tracking and detection of oil-gas reservoirs. In order to accurately and quantitatively detect the concentration value of sulfur hexafluoride gas tracer, we need the gas reference material of sulfur hexafluoride with high accuracy. Using high purity sulfur hexafluoride as raw material and high nitrogen as dilution gas, the level of 0.100-10.0 μmol/mol sulfur hexafluoride gas reference material in nitrogen was prepared by gravimetric method. Its homogeneity and stability were checked by the change of concentration with pressure and time. All the research results indicated good homogeneity and stability, also its measurement result was accurate and reliable. The GC-MS was used to analyze the gas tracer of M13 well groups and M61 well groups in Xinjiang Oilfield, the concentration was quantified accurately using the external standard method, the gas tracer output curves was obtained and the connectivity of injection-production wells in the block was confirmed. The results indicated that the accuracy of quantitative detection of tracer concentration in oil-gas fields was guaranteed by reference material. It provides theoretical support for enhanced the exploit ratio in oil-gas reservoir.
Keywords: sulfur hexafluoride;reference material;gravimetric method;oil-gas field tracer;quantitative analysis
2022, 48(3):66-71  收稿日期: 2021-10-31;收到修改稿日期: 2021-12-09
基金项目:
作者简介: 郑力文（1987-），男，四川遂宁市人，助理研究员，硕士，主要从事气体标准物质制备技术及分析方法研究
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