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提出适合低渗透油田完井使用的油层保护完井管柱。介绍了研制的油层保护完井控制管柱、井下防喷管柱及组成管柱的主要工具。这项技术有效地解决了清蜡、洗井等入井液及压井液对油层的伤害问题，对低渗透油田开采过程中的油层保护具有重要的意义。
The proposed oil well protection and completion string suitable for completion of low permeability oilfields. The main tools for the well protection, well control, downhole anti-spout string and column assembly are introduced. This technique effectively solves the problem of oil well damage caused by wax removal, well washing and other well fluids and killing fluids and is of great significance to oil reservoir protection during the exploitation of low permeability oilfields.