| 贾立新,韩耀图,陈毅,陈彬,徐涛.稠油热采井防砂筛管失效机理及完整性研究[J].装备环境工程,2021,18(1):77-83. JIA Li-xin,HAN Yao-tu,CHEN Yi,CHEN Bin,XU Tao.Failure Mechanism and Integrity of Sand Control Screen in HeavyOil Thermal Production Well[J].Equipment Environmental Engineering,2021,18(1):77-83. |
| 稠油热采井防砂筛管失效机理及完整性研究 |
| Failure Mechanism and Integrity of Sand Control Screen in HeavyOil Thermal Production Well |
| 投稿时间：2020-04-10 修订日期：2020-05-29 |
| DOI：10.7643/issn.1672-9242.2021.01.012 |
| 中文关键词: 热采井 防砂筛管 热应力 冲蚀 腐蚀 完整性中图分类号:TG172 文献标识码:A 文章编号:1672-9242(2021)01-0077-07 |
| 英文关键词:thermal production well sand control screen thermal stress erosion corrosion integrity |
| 基金项目:“十三五”国家科技重大专项(2016ZX05058-002-008) |
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| Author | Institution |
| JIA Li-xin | CNOOCChinaCo., Ltd.Tianjin Branch, Tianjin 300452, China;State Key Laboratory of Offshore Oil Exploitation, Tianjin 300452, China |
| HAN Yao-tu | CNOOCChinaCo., Ltd.Tianjin Branch, Tianjin 300452, China;State Key Laboratory of Offshore Oil Exploitation, Tianjin 300452, China |
| CHEN Yi | CNOOCChinaCo., Ltd.Tianjin Branch, Tianjin 300452, China;State Key Laboratory of Offshore Oil Exploitation, Tianjin 300452, China |
| CHEN Bin | CNOOCChinaCo., Ltd.Tianjin Branch, Tianjin 300452, China;State Key Laboratory of Offshore Oil Exploitation, Tianjin 300452, China |
| XU Tao | CNOOCChinaCo., Ltd.Tianjin Branch, Tianjin 300452, China;State Key Laboratory of Offshore Oil Exploitation, Tianjin 300452, China |
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| 中文摘要: |
| 目的 防止热采井筛管损坏，延长热采井防砂有效期。方法 基于有限元理论，分别针对基管和外保护套，开展热采井优质防砂筛管在不同热应力补偿器及其安放间隔条件下的完整性研究，并开展室内实验，探究筛管在腐蚀、冲蚀共同影响下的失效规律。结果 目前现场所使用的热应力补偿器设计基本满足防砂筛管基管的力学完整性需求，但无法保证外保护套的力学完整性，无法避免筛管的热应力损坏，建议在热应力补偿器设计时应充分考虑外保护套的受力状态及变形情况。纯高流速流体冲刷对管材本体无破坏作用，却对冲蚀-腐蚀环境中腐蚀产物膜具有冲刷破坏作用，冲蚀-腐蚀迭加条件是筛管冲蚀损坏的主要因素。结论 合理的热应力补偿器加放及筛管材质选择，有利于提高筛管完整性，延长防砂有效期。 |
| 英文摘要: |
| This paper aims to prevent screen damage in thermal production well and extend the validity of sand control. Based on the finite element theory, this paper studies the integrity of high quality mesh screen for thermal production well in the condition of thermal stress compensators with different quantity and spaces respectively focusing on central base pipe and outer protective cover, and the laboratory experiments are conducted to explore the failure law of the screen under the influence of corrosion and erosion. The result shows that current arrangement of thermal stress compensator fulfils requirements of mechanical integrity of central base pipe of sand control screen, while the mechanical integrity of the outer protective cover cannot be guaranteed, and screen damage cannot be avoided. It is recommended that the stress state and deformation of the outer protective cover should be fully considered in the design of the thermal stress compensator. High velocity fluid has no destructive effect on the screen, but it has erosion damage on the corrosion product film in the environment of erosion-corrosion. The condition of erosion-corrosion superposition is the main factor of erosion damage. Reasonable allocation of thermal stress compensators and material selection of screen are conducive to improving the integrity of screen and prolonging the effective period of sand control. |
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