WBPHEDEE2023-2024CDD/NIeQ021_1

Amount

PART- A (Drilling and related works) :

Site Preparation, Temporary Latrine, Placement & levelling of Rig Machine, Mast hoisting and Casing drilling (Upto 6 mtr.) Placement of Casing with all allied works necessary to commence drilling woks and wind up of all machineries after completion of Drilling.

Drilling by Direct Rotary method of drilling using 9 7/8” dia.bit for pilot bore follwed by subsequently reaming using 12 1/4” dia. ,15 " dia. and 17.5" dia. Rock Roller Bits/Drag Bits in consolidated, semi consolidated and soft formation up to required depth including casing boring and casing lowering as required including cost of fuels and lubricants etc. as required for drilling. Note: 1)Rate only for pilot drilling will be @ 50%. of item rate. 2)Rate for reaming by 12 1/4 " dia. bit will be @ 14% of item rate. 3)Rate for reaming by 15 " dia. bit will be @ 16% of item rate. 4)Rate for reaming by 17.5 " dia. bit will be @ 20% of item rate.

From 6 Mtr. to 60 Mtr.

From 60 Mtr. to 90 Mtr.

From 90 Mtr. to 120 Mtr.

From 120 Mtr. to 150 Mtr.

From 150 Mtr. to 180 Mtr.

From 180 Mtr. to 210 Mtr.

From 210 Mtr. to 240 Mtr.

From 240 Mtr. to 270 Mtr.

From 270 Mtr. to 300 Mtr.

From 300 Mtr. to 330 Mtr.

From 330 Mtr. to 360 Mtr.

From 360 Mtr. to 390 Mtr.

From 390 Mtr. to 420 Mtr.

From 420 Mtr. to 450 Mtr.

Lowering the tube well assembly (UPVC Casing pipe ,well pipe, strainer along with UPVC accessories) vertically in a position with proper lowering arrangement by applying necessary jointing compound including labour cost for subsequent gravel packing and machine operation cost etc.

Cost of Consumables for drilling rigs and machineries.

Development (Min. 8 Hr. continuous )of tube well by using suitable air compressor (Min. Capacity: 600CFM & operating Pressure 14 Bar )followed by yield testing with BHT pump (Head :45 to 50mtr.,Discharge :1100 to 1000 LPM and 25 BHP engine) all complete including To & Fro Transportation cost and Cost of fuels, lubricants & Labour etc.

Water sample collection and chemical test including Arsenic Test.

Transportation cost of drilling equipment and accessories rig machine etc. including cost of fuel,Lubricant & loading unloading the materials from store/stack yard /suppliers godown and unloading /stacking the same at site. (Upto 60 KM distance)

Add: 18% GST

Add: 1% LW CESS

PADMA ENGINEERING CO.

DEV AND COMPANY

CONCORD ENGINEERING

Earth Care Products & Services

OSMAN SEKH