With the improvement of directional well and horizontal well technology, lateral well, as the extension and development of directional well technology, has been paid more and more attention. The retrievable skewer is a key tool in branch well drilling technology, and plays a vital role in the drilling and completion of branch wells. The retrievable tilter is divided into three parts: the tilter, the circulation flushing valve and the recovery tool.

1. Inclinator
The tilter adopts hydraulic seat seal, which is firm and easy to operate. The inclined surface adopts arc surface and is super-hardened. When the window is opened, the degree of matching between the milling cone and the inclined surface is high, and the drilling pressure is easy to control, which reduces the phenomenon of drilling and jumping. The internal self-locking mechanism of the tool is more perfect, and the axial and circumferential self-locking are all-round, which greatly improves the reliability of the tool.
2. Circulating well flushing valve
The circulation flushing valve is mainly used to complete the liquid connection, reverse circulation flushing and positive circulation pressure seat seal during the process of tool running into the well. A special diversion mechanism is designed inside to ensure the smooth communication of the liquid when the tool goes into the well and flushes the well, and at the same time, it prevents the solid particles and impurities in the string from settling into the skewer, and improves the reliability of the tool.
3. Recycling tools
The recovery tool adopts a double salvage mechanism, and each mechanism is independent and interrelated, which greatly improves the success rate of the recovery tool.