| 李效波,李良庆,周欢,满宗通.渤海某油田注水井筛管失效测试及原因分析[J].装备环境工程,2022,19(11):102-109. LI Xiao-bo,LI Liang-qing,ZHOU Huan,MAN Zong-tong.Test and Cause Analysis of Water Injection Well Screen Failure in a Bohai Oilfield[J].Equipment Environmental Engineering,2022,19(11):102-109. |
| 渤海某油田注水井筛管失效测试及原因分析 |
| Test and Cause Analysis of Water Injection Well Screen Failure in a Bohai Oilfield |
| 投稿时间：2021-09-18 修订日期：2021-11-15 |
| DOI：10.7643/issn.1672-9242.2022.11.014 |
| 中文关键词: 注水井 筛管 失效 冲蚀中图分类号:TG172 文献标识码:A 文章编号:1672-9242(2022)11-0102-08 |
| 英文关键词:water injection well sand control screen failure erosion |
| 基金项目:中海油田服务股份有限公司科技项目(YSB17YF001) |
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| Author | Institution |
| LI Xiao-bo | Oilfield Optimization Division, COSL, Tianjin 300459, China |
| LI Liang-qing | Oilfield Optimization Division, COSL, Tianjin 300459, China |
| ZHOU Huan | Oilfield Optimization Division, COSL, Tianjin 300459, China |
| MAN Zong-tong | Oilfield Optimization Division, COSL, Tianjin 300459, China |
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| 中文摘要: |
| 目的 对注水井防砂筛管失效进行原因分析，解决注水井防砂问题。方法 针对渤海某油田注水井的防砂筛管失效问题，打捞失效筛管，并对破损区取样，通过损伤部位宏观和微观形貌、关键区域EDS能谱成分测量及室内模拟测试与计算分析等手段，综合分析各部位的损伤特征及规律。结果 宏观和微观形貌分析结果表明，损伤区域呈现明显的冲蚀损坏特征，测试与计算结果得出损伤速率为1.299 mm/a，寿命预测约为0.35 a(4.2个月)，与现场实际比较吻合。结论 地层砂在筛管外堆积，造成筛管堵塞，形成高压差，高速注入水冲击筛管外的堆积砂，形成含砂流体在筛管外表面附近区域的紊流，对筛管局部反向冲击形成含砂流体冲刷腐蚀，从而造成局部冲蚀破坏穿孔。为有效解决冲蚀损伤问题，建议后续采取砾石充填防砂方式。 |
| 英文摘要: |
| The paper aims to analyze the reason of sand control screen failure and solve the sand control problem of injection wells. Aiming at the sand control screen failure of a injection well in Bohai oilfield, the damaged screen is salvaged and the damaged area is sampled. The damage characteristics and law of each part are analyzed by means of macroscopic and microscopic observation of the damage site, EDS spectrum component measurement in key areas and indoor simulation test calculation. The macroscopic and microscopic observation results show that the damaged area presents obvious erosion damage characteristics, and the test calculation results show that the damage rate is 1.299 mm/a. Predicted life span is 0.35 year (4.2 months), which is consistent with the actual situation. It can be seen that formation sand accumulates outside the screen, leading to the screen plugging and forming a high pressure difference. The high-speed injection of water impacts the accumulated sand outside the screen to form a turbulent flow of the sand-containing fluid in the vicinity of the outer surface of the screen. The partial reverse impact of the screen tube forms a scouring corrosion of the sand-containing fluid, causing partial erosion damage and perforation. Gravel packing sand control methods is recommended following to effectively solve the problem of erosion damage. |
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