What is a Kelly rig?

We can say that Kelly is a direct connection between the rig’s surface equipment and the oilfield drilling bit and is a vital element of the rotary system. This function is more commonly performed on modern rigs by a top drive system, power swivel, or power sub directly below a conventional swivel.

What size Kelly box can be matched with a drlling rig?

Rock drilling bucket, soil drilling bucket etc. Diameter range from 500mm to 3500mm, it can be matched with all brand of drlling rigs and also kelly box can be 100mm, 110mm, 130mm, 150mm, 200mm, 250mm. There are double cut double bottom... Double wall casing tube and single wall casing tube.

Which rotary drilling rigs have Kelly bars?

Interlocking kelly bar, friction kelly bar and Full locking kelly bar for any brand of rotary drilling rigs. Like Bauer, Soilmec,Liebheer, Mait, IMT, Sany, XCMG, Sunward etc. We are also offing kelly spring, swivel head, terminal joint...

What does Kelly do on a rotary rig?

They turn to the right as the rotary table turns. In other words, Kelly’s mission is to transfer energy from the rotary table to the drill string. We can say that Kelly is a direct connection between the rig’s surface equipment and the oilfield drilling bit and is a vital element of the rotary system.

How does Kelly drill work?

Kelly is supported by the swivel through the rotary table and connected to the first joint of drill pipe in the drill string. Kelly has been approved by the API certification. Straightness is the key manufacturing process. Straightness is checked before, during and after each machining operation. Flats are precision-milled to API specifications.

What is a Kelly drill swivel?

Kelly is the drive part of whole drill string, it transmits the torsional energy from the rotary table to the bit in the bottom of the hole. Kelly is supported by the swivel through the rotary table and connected to the first joint of drill pipe in the drill string. Kelly has been approved by the API certification.