海上油田热采分层分段注汽工具研究与应用

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文章编号：1001-3482（2026）01-0053-07

关键词：分层分段；注采管柱；笼统注汽；油藏动用 中图分类号：TE952 文献标志码：B doi：10.3969/j.issn.1001-3482.2026.01.007

Abstract：After the general steam injection development of offshore oilfields undergoes multiple rounds of huff and puff， problems such as significant differences in the utilization rate of oil due to uneven inter-layer steamabsorption，and even steam channeling， gradualyarise，which restrict the development efectof thermal recovery. By taking into account the requirements of the thermal recovery well's layered and segmented processand the underground high-temperature and high-pressure conditions， the research on the process pipe stringand supporting tools was carredout. Key technologies such as high-temperature-resistant setting/ sealing materials and constant-flow injection were overcome.A layered and segmented steam injection process suitable for ofshore horizontal wells and highly deviated directional wells was formed.The overall pipe string could withstand a temperature of 350∘C and a pressure of 21 MPa. It had reliable performance and good sealing performance and could achieve the function of layered and segmented steam injection in 2～3 layers/segments.The segmented steam injection effct implemented in Well X1 of the Bohai Oilfield preliminarily verified the reliability ofthetools.During the steam injection stage，the steam absorption profile was relatively uniform， effectively improving the steam injection quality and production effect.

Key Words：layered and segmented steam injection; injection and production pipe string; general steam injection;reservoir utilization

渤海油田稠油探明储量25.2亿t，占总探明石油地质储量的 52% ，其中黏度在 350mPa ·s以上需热采稠油探明储量6.8亿t，涵盖多种油藏类型[1]。（剩余6979字）