Overshot go into the heart of the drill pipe, the slider move up, make the tube socket head can be inserted into the center, when on the slider move up tight, using friction lift drill, remove loose again after the slider, by means of the connection string to slide along the block should tighten, set aside the center pipe, but in front of the salvage must first determine the bit in the bottom of the hole position, can be in a thin plate with bolts tight end of drill pipe, Drop the drill pipe to the bottom of the hole and press it on the drill bit. After waiting for a moment, it is proposed that the relative position of the drill bit at the bottom of the hole and the center of the rotary plate of the drill can be determined by observing the indentation left by the center pipe of the drill bit on the board, and then move the drill or rotary plate so that the center of the rotary plate is directly in front of the center pipe of the injured head, so as to ensure that the fishing device can be inserted into the center pipe accurately.
Overshot Assembly,Fishing Tools,Overshot Assembly For Sale,Overshot Fishing Assembly wuxi shengmeirun trading co.,ltd. , https://www.smrxz.com
Lubricants for industrial machinery (5)
Eight, H group (hydraulic system) oil 1.H group oil classification criteria (GB/T7631.2-87) China has developed a classification of H group oil, it is divided into hydrostatic pressure and fluid hydraulic transmission The system uses two parts of the working medium. The former is used to transfer potential energy, often called hydraulic oil (for mineral oil or synthetic hydrocarbon oil) and hydraulic fluid (for flame retardant synthetic oil). The latter is used for transfer functions, often referred to as hydraulic or hydraulic transmission oil. Work on hydrostatic systems