S T & C Oilfield DMCC products

Model ZJ70/4500D, 2000HP, SCR drive land drilling rig,designed to drill and complete oil and gas wells with a depth below 7000 meters. The rig naming and model coding and basic technical specification conform to China national petroleum industry standards. All key rig components conform to API specifications and API monogram permitted to be stamped. The mast is designed in 45 meters high, suitable for installing 500-ton top drive unit, mast components including monkey board, stabbing board, mast ladders and other mast auxiliary parts. The substructure is fabricated with a floor height of 9 meters or 10.5 meters high, attached with ramp, floor man escape kid, steps, and dog houses, etc. The drilling rig is equipped with four diesel generator sets as the rig main mover. And one each 400Kw/50Hz assistant generator, intentionally designed to used while the main generators unused.

Features: Model ZJ70/4500DB, 2000HP, VFD drive land drilling rig is designed to drill and complete oil and gas wells with a depth below. The rig naming and model coding and basic technical specification conform to Chinese National Standards. All key rig components conform to API specifications and API monogram permitted to be stamped. The mast is designed in 45 meters high, suitable for installing 500-ton top drive unit, including monkey board, stabbing board, mast ladders, and other mast auxiliary parts. The substructure is fabricated with a floor height of 9 meters or 10.5 meters high, attached with ramp, floor man escape kid, steps, and dog houses, etc. The drilling rig is equipped with four diesel generator sets as the rig main mover, and one each 400Kw/50Hz assistant generator, intentionally designed to used while the main generators left standby

The retaining bar can prevent drill line from jumping out of and jumping off sheave grooves. Sheave grooves are medium-frequency induction hardened, prolonging the sheave service life. Sheave bearings are lubricated individually with the grease cup at the shaft end. Sheaves and bearings of the crown block may be interchanged with those of the traveling block. The crown clocks conform to API Spec 8A /4F.

The side plates made of heavy steel provide a sufficient weight so that the drill line is kept taut when hoisting and lowering the empty elevator, facilitating the drum to wrap the line, speeding up the lowering of the unloaded tackle and prolonging the line service life. Sheave grooves are medium-frequency induction hardened, prolonging the sheave service life. The sheave groove size and the surface radius of the bail conform to API Spec 8A/8C

The Kelly offered are in types of square and hexagonal Kelly. Kelly joints are made from 4145H modified alloy bars that are well quenched and tempered. The hardness ranges from 285BHN to 341 BHN and the minimum impact value is 40ft-lbs per inch tested in condition of room temperature. Both ends and the drive section trepanned to provide true bores. Thread protectors are furnished with the box and pin thread, Steel protection case provided for safe proper handling, The Kelly joints fully conforms to API Spec 7K and API monogram legally stamped.