Sidetracking is the whole process of opening a window on the casing side of a predetermined section of an oil-water well, drilling a new wellbore through the window, and then running the liner in this new wellbore to fix the well. The sidetracking technology is to fix a skewer at a certain depth in the oil-water well, use its inclined plane to create and guide the deflection, and use the milling cone to open a window on the side of the casing, drill a new wellbore through the window, and then lower the tail A complete set of technology for tubular cementing. The skewer is one of the key tools for branch well drilling, and the existing skewer is inconvenient to be fixed during recovery, and it is inconvenient to recover the skewer.

Oil drilling adopts retrievable drilling and completion skewer, including the skewer body, connecting parts and casing mechanism. Improve the problem that it is inconvenient to fix the existing skewer when recovering and recover the skewer. There are a first installation hole and a second installation hole inside the recliner body, the first installation hole is vertically arranged in the middle of the recliner body, and the second installation hole is arranged horizontally in the first installation hole on both sides.