裸眼水平井大通径压裂封隔器

Large bore fracture packer of horizontal open hole well

Abstract

本实用新型公开了一种裸眼水平井大通径压裂封隔器,其包括上接头和中心管,中心管外部套装有上扶正头、胶筒、压缩缸、平衡缸、外筒和下扶正头,上、下扶正头固接在中心管上,胶筒两端分别对称设有压环和支撑环,压缩缸上端抵压在胶筒下部的支撑环上,下端通过锁块与中心管连接,平衡缸通过剪钉与中心管固接,平衡缸上部抵压在压缩缸下部外侧并压紧锁块实现压缩缸与中心管的固接,平衡缸上部还与中心管上开有的传压孔对应设置,外筒上端螺纹连接在压缩缸外壁上,下端设有锁紧环,锁紧环上形成有内锁扣,中心管上形成有与内锁扣匹配的外锁扣。本实用新型能够快速、持久施工并可实现水平井储层有效封隔,保证水平井分段压裂施工的正常进行。
The utility model discloses a large bore fracture packer of a horizontal open hole well. The large bore fracture packer comprises an upper joint and a central pipe; an upper centralizing head, a rubber barrel, a compression cylinder, a balance cylinder, an outer barrel and a lower centralizing head; the upper and lower centralizing heads are fixedly connected to the central pipe; a compression ring and a support ring are symmetrically arranged on the two ends of the rubber barrel, respectively; the upper end of the compression cylinder is propped against the support ring on the lower part of the rubber barrel, while the lower end of the compression cylinder is connected with the central pipe by use of a locking block; the balance cylinder is fixedly connected with the central pipe by use of a shear pin; the upper part of the balance cylinder is propped against the outer side of the lower part of the compression cylinder and holds down the locking block so that the compression cylinder can be fixedly connected with the central pipe; the upper part of the balance cylinder is further arranged to correspond to a pressure transfer hole formed in the central pipe; the upper end of the outer barrel is in threaded connection with the outer wall of the compression cylinder; a locking ring is arranged on the lower end of the outer barrel; an inner lock catch is formed on the locking ring, while an outer lock catch matched with the inner lock catch is formed on the central pipe. The large bore fracture packer of the horizontal open hole well is capable of realizing quick and lasting construction, and also realizing effective packing of a horizontal well reservoir to guarantee normal staged fracturing construction of the horizontal well.

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Cited By (2)

    Publication numberPublication dateAssigneeTitle
    CN-104847301-AAugust 19, 2015中国石油天然气股份有限公司裸眼封隔器
    CN-104847301-BDecember 05, 2017中国石油天然气股份有限公司裸眼封隔器