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砾石充填介质复合堵塞对天然气水合物储层产能的影响规律研究

赛福拉·地力木拉提 董长银 李彦龙 陈强 刘晨枫 王浩宇

赛福拉·地力木拉提,董长银,李彦龙,等. 砾石充填介质复合堵塞对天然气水合物储层产能的影响规律研究[J]. 石油钻探技术,2022, 50(5):94-101 doi: 10.11911/syztjs.2022055
引用本文: 赛福拉·地力木拉提,董长银,李彦龙,等. 砾石充填介质复合堵塞对天然气水合物储层产能的影响规律研究[J]. 石油钻探技术,2022, 50(5):94-101 doi: 10.11911/syztjs.2022055
SAIFULLA Dilmurat, DONG Changyin, LI Yanlong, et al. Influence law of hybrid plugging of gravel-packed media on productivity in natural gas hydrate reservoirs [J]. Petroleum Drilling Techniques,2022, 50(5):94-101 doi: 10.11911/syztjs.2022055
Citation: SAIFULLA Dilmurat, DONG Changyin, LI Yanlong, et al. Influence law of hybrid plugging of gravel-packed media on productivity in natural gas hydrate reservoirs [J]. Petroleum Drilling Techniques,2022, 50(5):94-101 doi: 10.11911/syztjs.2022055

砾石充填介质复合堵塞对天然气水合物储层产能的影响规律研究

doi: 10.11911/syztjs.2022055
基金项目: 国家重点研发计划项目“水合物开采过程气-液-固多相流动规律与泥砂控制机理”(编号:2017YFC0307304);国家自然科学基金项目“弱胶结储层微观出砂机理与颗粒级尺度出砂过程模拟研究”(编号:51774307);中国石油科技重大专项“海域天然气水合物试采工程基础及关键技术”(编号:ZD2019-184)联合资助
详细信息
    作者简介:

    赛福拉·地力木拉提(1994—),男,新疆乌鲁木齐人,2019年毕业于中国石油大学(华东)石油工程专业,油气田开发工程专业在读硕士研究生,主要从事油气田开发防砂完井技术研究工作。E-mail: s19020131@s.upc.edu.cn

  • 中图分类号: TE357.46+2

Influence Law of Hybrid Plugging of Gravel-Packed Media on Productivityin Natural Gas Hydrate Reservoirs

  • 摘要:

    砾石充填层堵塞是影响天然气水合物储层砾石充填防砂井产能优化的关键因素。在考虑泥质粉砂与二次生成水合物对砾石充填层复合堵塞情形的基础上,针对人造陶粒与石英砂充填介质,分别开展了泥质粉砂和水合物二次生成堵塞充填层的模拟试验,系统分析了堵塞过程。基于复合堵塞充填层机理及渗透率变化规律,构建了天然气水合物砾石充填防砂井砾石充填层堵塞后的产能预测模型并进行了案例分析。研究结果表明,在泥质粉砂和二次生成水合物堵塞条件下,充填层渗透率的降幅分别达93%与98%;复合堵塞造成充填层渗透率降低对产能的影响显著,堵塞后防砂井产能比的降幅达97%。大粒径砾石充填虽然能缓解产能受损,但效果不明显。研究认为,预防复合堵塞的关键是优化生产制度,避免水合物二次生成。

     

  • 图 1  充填介质挡砂模拟试验系统流程

    Figure 1.  Flow chart of sand retention simulation apparatus for retention media

    图 2  不同介质充填层渗透率比、压差比和流量比随时间的变化

    Figure 2.  Variation of permeability ratio, pressure difference ratio, and flow ratio of different packing layers with time

    图 3  不同粒径陶粒和石英砂充填层的最终堵塞程度

    Figure 3.  Ultimate plugging degree of layers packed by ceramsite and quartz sand with different particle sizes

    图 4  水合物生成堵塞充填介质模拟试验装置

    Figure 4.  Simulation test device for plugging of packing media caused by hydrate formation

    图 5  不同介质充填层压差比和流量比随时间的变化

    Figure 5.  Variation of pressure difference ratio and flow ratio of different packing layers with time

    图 6  不同介质充填层渗透率比和温度随时间的变化

    Figure 6.  Variation of permeability ratio and temperature of different packing layers with time

    图 7  不同粒径陶粒和石英砂充填层堵塞程度的平均值

    Figure 7.  Average plugging degree of layers packed by ceramsite and quartz sand with different particle sizes

    图 8  水合物–泥质粉砂复合堵塞充填层机理

    Figure 8.  Hybrid plugging mechanism of hydrate and argillaceous silt

    图 9  砂堵不同阶段发生冰堵时对陶粒充填层渗透率的影响规律

    Figure 9.  Influence law of ice plugging occurring at different stages of silt plugging on permeability of ceramsite packing layers

    图 10  不同粒径陶粒充填层堵塞产能比与渗透率的关系

    Figure 10.  Relationship between productivity ratio and permeabilityof plugging layers packed by ceramsite with different particle sizes

    图 11  不同粒径陶粒充填层不同复合堵塞情形对产能的影响规律

    Figure 11.  Influence law of different hybrid plugging situations of ceramsite packing layers with different particle sizes on productivity

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  • 收稿日期:  2021-08-02
  • 修回日期:  2022-08-01

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