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DETAIL SPECIFICATIONS OF THE DIRECT DRILLING ROTARY RIG

           HAVING 1200’ To 2000 ’ DILLING CAPACIT

11              DRAW WORKS

provided on each drum. The draw works shaft will be made of nickel chome alloy steel and mounted on spherical roller or ball bearings. The draw works will be driven through 6 speed (five forword and one reverse) transmission.

12              kelley

           The Kelley will be of heavy duty telescopic steel construction specially designed to give smooth and trouble free performance, inner wash pipe will be made of 150mm dea heavy duty seamless pipes having minimum 8.00 mm wall thickness. The size of outer and inner Kelley will be 300 mm and 200 mm nominal bore. The Kelley will be provided with a specilly designed water swivel with stuffing box to stop all the suction leakage and there by increasing the dilling progress. The capacity of the water swivel will be such that if can handle the weight of 1200 of dill pipes.

13              POWER TAKE OFF

               A suitable power take-off arrangement will be provided for the rig unit to drive power from the truck engine through main clutch and transmission of the truck. Power tahe-off will of enclosed design will be of enclosed design with mud shield. All the shafts will be made of nickel chrome alloy steel and mounted on heavy duty ball bearings. Power input and output shafts will be of adequate size to transmit mower with the help of standard flange coupling. The power take-off will be provided with three positions locking type operating handles i.e truck, neutral and rig unit.

      14        CONTROLS

                      All the control levers including that of hydraulic systems will be grouped at driller’s position for easy and efficient operation of the rig. All valves should be operated with the help of hydraulic cylinders with control near drillers position.

      15      TRANSMISSION GEAR BOX

                          2 NOS. Transmission gear boxes of reputed make preferably ashok Leyland having 6 speeds-(five forword and one reverse) transmission will be provided one for the rotary table and second for the draw works.