可开关滑套及其开关方法
By designing a switchable sliding sleeve and its switching method, the opening and closing of the sliding sleeve is achieved by utilizing the weight of the tubing string. This solves the problem of non-selective control of the connection between the wellbore and the reservoir in the existing technology, simplifies well modification and production management, and reduces costs.
CN117266791BActive Publication Date: 2026-07-17PETROCHINA CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- PETROCHINA CO LTD
- Filing Date
- 2022-06-14
- Publication Date
- 2026-07-17
Smart Images
Figure CN117266791B_ABST
Abstract
本发明公开了可开关滑套及其开关方法，包括下接头，下接头与外筒的一端连接，外筒的另一端与喷砂体的一端连接，喷砂体的另一端与上接头连接，喷砂体靠近外筒的一端设置有喷砂孔，外筒内滑动连接有滑套芯子，外筒的内壁从上至下依次设置有关闭凹槽、开启凹槽，滑套芯子的外壁上设置有卡位凹槽，卡位凹槽内设置有弹性压簧片，滑套芯子的底端内壁上设置有扩径凹槽。本发明滑套能够随时开启与关闭预定层段储层与井筒的连接，便于后期的选择性改造和后期的选择性开采。
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