高压大通径送入悬挂系统的研制

摘要

水平井裸眼封隔器分段压裂完井工艺技术是提高低渗透油藏产能的重要技术手段。高压大通径送入悬挂系统是水平井裸眼分段压裂完井工艺管柱的主要配套工具之一。该工具送入预定位置后丢手，悬挂密封总成可以承接尾管悬重力和压裂过程中的上顶力，并能够实现尾管顶部环空的有效密封。整个系统具有工艺实施简单可靠，悬挂力大，密封压力高、内通径大等优点。该系统已在现场应用了7口井，有广阔的应用前景。%Low permeability reservoir is rich in resources in Shengli Oilfield.Technology of hori-zontal wells with open hole packer staged fracturing completion is an important technology to im-prove the low permeability reservoir production capacity.High pressure and large diameter feed-ing suspension system is one of the main matching tools.The system is mainly composed with re-lease assembly and suspension sealing assembly.Among them release assembly can connect the drill pipe and the fracturing completion string,and can release after sending the tail pipe into a predetermined position,suspension sealing assembly can undertake tail hanging weight of the fracturing completion string and the upward force of a string of In the process of fracturing and can realize effective sealing tail pipe at the top of the annulus.The whole system has a process to implement a simple and reliable process,suspension force is big,high sealing pressure,large in size etc.The system has been applied in 7 wells in the field application.With the increasing application of staged fracturing horizontal well completion,the system has broad application prospects.