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油气田多层段逐层坐封逐层压裂管柱及工艺,结构简单,可以实现多达5个目的层段的油气井逐层座封逐层压裂施工,满足多数油气井多层段分层压裂需要。可实现环空压力检测、实施隔层保护措施、降低对封隔器承压能力要求;节流压差坐封,无需压前坐封。压裂停止泵注即可自动解封,实现管柱内外沟通。如发生砂堵可立即放喷,进而彻底反洗井,防止沉砂卡钻,不易发生砂卡。适于各种地层压力的井况以及稠油井、稀油井、气井。
Oil and gas fields can be set up by layer by layer, and the structure is simple. It can realize up to 5 layers of well layers to be sealed by layers, and can meet the requirements of most oil and gas wells in multi-layer fracturing Fracturing needs. Ring pressure can be detected, the implementation of barrier protection measures to reduce pressure on the packer capacity requirements; throttling pressure setting, without pre-pressure setting. Frac stop pumping note can be automatically unsealed, to achieve internal and external pipe string communication. In the event of sand blockage can immediately put the spray, and then completely anti-washing wells to prevent grit sticking card, sand card is not easy to occur. Well conditions suitable for various formation pressures, heavy oil wells, thin oil wells, gas wells.