Rotary swivel

Rotary swivel bail adaptors A bail adaptor that allows the bail of the swivel to be grasped and hoisted with elevators. 

Rotary swivels. The swivel connecting the nonrotating hook and the rotating kelley while providing a nonrotating connection through which mud enters the kelley. 

Rotary Swivel Pressure Testing The assembled pilot model of rotary swivels shall be statically pressure tested. All cast members in the rotary swivel hydraulic circuit shall be pressure tested in production. This test pressure shall be shown on the cast member. 

Swivel and Rotary Hose 616. Drill-Stem Subs 619. Kelly 620. Rotary Table and Bushings 622. 

Rotary Hose Safety Chain Attachment. Swivels with gooseneck connections in 2 in. or larger shall have a suitable lug containing a 1 - -in. hole to accommodate the clevis of a chain having a breaking strength of 16,000 lb. The location of the lug is the choice of the manufacturer. 

Rotary equipment refers to the pieces of surface equipment in drilling operations that actually rotate or impart rotating motion to the drill pipe. This equipment includes the upper members of the drill string such as the swivel, swivel sub kelly cock, kelly, lower kelly valve, and kelly sub (Figure 4-87), as well as the kelly bushing and rotatary table [13]. 

The swivel (Figure 4-88) suspends the kelly, allows for rotation of the kelly and drill string, and provides a connection for the rotary hose to allow mud circulation. 

Although the rotary hose is not a rotating element, it is mentioned here due to its connection with the swivel. It is used as the flexible connector between the top of the standpipe and the swivel, and allows for vertical travel of the swivel and block (Figure 4-89). It is usually 45 ft or longer. Rotary hose specifications are provided in API Specification 7 [13]. Each hose assembly is... 

Rotary hose external connections (i.e., the connection to the swivel gooseneck) are threaded with line-pipe thread as specified in API Specification 5B [14]. 

A rotary table is a platform with a rotating device through which the drill string is passed into the hole that can be mechanically engaged with the drill string to eause it to rotate on bottom. Today, rotation is often provided by a top drive or power swivel mechanism... 

There is no doubt that the fully automatic one-man-operated rotary drill requires more skill on the part of the operator, and also more servicing, than does the percussive rotary drill powered with compressed air and mounted on crawler tracks. These machines are of relatively low weight. With a suitable compressor in tow, a machine of this kind can move about under its own power even on difficult terrain. The drill guide mast can be tilted and swivelled in all directions, so that a wide variety of drilling duties can be performed. These machines are the preferred type in small and medium-size quarries and in cases where highly skilled operating personnel are unavailable. 

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