DRILLING OF 200 MMDIA GRAVEL PACK PRODUCTION WELL FOR PWS TO PORAGADEI UNDER TIRTOL BLOCK

Labour for drilling a perfectly vertical bore hole of specified dia for a specified depth below ground level in alluvial soil strata by mud Rotary Rig drilling as required to suit the site condition as per the direction of Engineer in charge including use of own Rigs with its accessories, tools and plants and all consumables etc. for lowering of finished bore suitable for lowering of 200mm dia PVC Pipe for housing fitted with sockets and with or without well screen as per the necessity for the soft medium, hard and boulder formations PVC casing pipes if required by the contractor to prevent collapse of casing pipes after drilling 200mm to 400mm dia in over burden portion.. For Drilling of 200 (8”) dia pipe i) From 0 mtr. to 100th meters

iii) From 101 mtr. to 200 meters

Labour for lowering the following sizes of PVC casing pipes with or slotted pipes as per the necessity from ground level up to 300mtr. depth & fitted & fixed up in perfecty vertical position including cutting and threadig pipe and slotted pipe and fixing of all jointing materials extra sockets T&P etc., all complete and keeping the top of the casing pipes threaded including plugging the tubewell to prevent entry of foreign materials. 200mm dia PVC/GI Casing pipes

Cleaning and developing the production well with compressor (supplied by the contractor) continuously worked till clear and adequate discharge is obtained from the tube well including supply and use of all necessary equipments and labour as per the direction of Engineer-in-charge. For tube well of 200mm dia

Supplying all materials,Labour T & P for logging the bore through departmental logging team (Till logging team arrives at site the contractor is to keep the bore intact by circulating system) and when the logging team arrive at the site. The contractor will withdraw the boring pipe with cutter etc and keep the bore suitable for logging and supply required labour to carry out the logging operation

Supplying all materials labour, tools and plant and providing sanitary sealing by cement concrete grouting angular space around the PVC. The PVC casing pipe up to 5.00 mtrs. below GL (including cost of cement) as per direction of Engineer in charge.

Labour charges for gravel packing of speific size (P-6) of gravel (to be supplied by the contractor) as per direction Engineer-in-charge) Although the bore around the pipe and strainer). Around 200mm dia tube well bore.

Supplying all labour tools ,plant and providing saline by cement slurry grouting in annular space ground the casing pipe as per direction of Engg. in charge) cement will be supplied by the contractor.) The pumping unit and grounting pipe is to be provided by the contractor.

Supplying all materials labour, material,tools and plant for construction of plat form arround production well (1.8mx1.80mx1.00 m) including cost conveyance royality etc as per direction of Engineer in charge.

Labour charges for cutting transverse slott on 200mm dia sch.120 PVC pipe with solott size 1.5mm.

Silicon sealant(Anabond)

200mm dia pvc bell plug (120SCH.)

8" PVC threaded end cap PN-10

200mm dai pvc Short piece (1 FT long both side threaded)

200mm dia Rubber 'O' Ring

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