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| 酸性气田缓蚀剂现场效果评价技术及应用 |
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陈文1,2,3,莫林1,2,3,何益杉1,2,3,陈力力4
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1.中国石油西南油气田公司天然气研究院;2.国家能源高含硫气藏开采研发中心 ;3.中石油集团公司高含硫气藏开采先导试验基地;4.中国石油西南油气田公司
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| 摘要: |
| 目的 利用气田水分析、现场腐蚀监测/检测等方法形成酸性气田缓蚀剂现场效果评价技术。方法 在实验室考查了缓蚀剂残余质量浓度分析、超声波测厚、电化学探针等方法的有效性。结果 缓蚀剂残余质量浓度标准曲线拟合值相关系数在99.9%以上、超声波测试结果相对误差最高在0.67%、电化学探针作为评价缓蚀剂的效果手段具有相当的灵敏性。结论 利用形成的酸性气田缓蚀剂现场效果评价技术,在龙王庙某原料气管线开展应用,结果表明可以有效评价缓蚀剂现场应用效果,评价结果与现场腐蚀检测结果相吻合。 |
| 关键词: 酸性气田 缓蚀剂 效果评价 龙王庙组气藏 |
| DOI：10.3969/j.issn.1007-3426.2022.04.015 |
| 分类号: |
| 基金项目:中国石油股份公司公司发展战略与科技基础工作决策支持研究(2018D-5005-23)；中国石油西南油气田公司科技项目“防冻缓蚀技术研究与应用”(20190305-03) |
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| Field evaluation and application of corrosion inhibitor used in sour gas field |
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Chen Wen1,2,3, Mo Lin1,2,3, He Yishan1,2,3, Chen Lili4
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1. Research Institute of Natural Gas Technology,PetroChina Southwest Oil & Gasfield Company, Chengdu, Sichuan, China;2. National Energy Research and Development Center of High-Sour Gas Exploitation, CNPC, Chengdu, Sichuan, China;3. High-Sour Gas Exploitation Pilot Test Center, CNPC, Chengdu, Sichuan, China;4. PetroChina Southwest Oil & Gasfield Company, Chengdu, Sichuan, China
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| Abstract: |
| Objective The field effect evaluation technology of corrosion inhibitor in sour gas field is formed by gas field water analysis and field corrosion monitoring/detection, etc. Methods The effectiveness of residual concentration analysis of corrosion inhibitor, ultrasonic thickness measurement and electrochemical probe was investigated in the laboratory. Results The results show that the R2 value of the residual mass concentration of corrosion inhibitor curve is more than 99.9%, the highest relative error of the ultrasonic test result is 0.67%, the electrochemical probe is a sensitive method to evaluate the corrosion inhibitor. Conclusion sThe field effect evaluation technology of corrosion inhibitor was applied in a raw gas pipeline in Longwangmiao gas reservoir. The results show this technology can effectively evaluate the field anti-corrosion effect of corrosion inhibitor, and the evaluation results are consistent with the field corrosion detection results. |
| Key words: sour gas field corrosion inhibitor application evaluation Longwangmiao gas reservoir |
