Construction of tubewell

Amount

Transportation of D.C. rig machine and other equipments with all accessories and materials required for construction of tube well including loading & unloading. This must include the transportation of other equipment associated with rig machine and its works.

Erection of rig machine and camp equipage including leveling and dressing of site for proper construction of tube well.

Supply of all required materials and construction of tube well by Direct Rotary Rig Machine and arrangement of water required for drilling of tube well etc. as per specification confirming to ISS No.-2800 (Part-I&II) 1979.

Drilling of initial pilot bore having 200mm diameter as given below.

From G.L. to 100m BGL.

From 100m BGL to 200m BGL.

Zone Testing

Reaming of drilled pilot bore of 200mm diameter up to 600mm diameter finished bore by using suitable sizes of RR bits from GL to 65m BGL.

Reaming of drilled pilot bore of 200mm diameter up to 500mm diameter finished bore by using suitable sizes of RR bits from 65m BGL to 200m. BGL as given below.

From 65m BGL to 100m BGL

From 100m BGL to 200m BGL

Proper cleaning and two coats painting of tube well assembly by anti corrosive black bituminous paint including all material labour T&P complete in all respect.

300mm diameter housing pipe accessories of tube well assembly

200mm diameter plain/slotted pipe

Preparation of T.W. assembly of size 300mmx200mm diameter at site including welding, lowering of tube well assembly, arrangement of welding plant and other materials required for proper completion of the work. The necessary 300mmx200mm diameter MSERW pipes and fittings, such as M S rings, reducer, center guide, and bail plug shall be provided by the department at site of work as given below.

300mm diameter plain MSERW pipe from GL to 60m BGL

200mm diameter plain/slotted MSERW pipe from 60m BGL to 100m BGL

200mm diameter plain/slotted MSERW pipe from 100m BGL to 180m BGL

Cement Sealing work (if required)

shrouding of pea-gravel (from GL to 200m BGL) including back washing of tube well required for proper completion of the work. The necessary pea-gravel shall be provided by department at site of work

Dismantling of rig machine and camp equipages after completion of work and re-instatement of site of work.

Development by 350 PSI Air Compressor

Transportation of 350 PSI Air Compressor and associated T&P, materials etc up to tubewell including loading and unloading of T&P etc.

Installation of air compressor and T & P etc complete in all respect at site.

Development of tubewell by 350 PSI air compressors including necessary welding works, with supply of fuel and lubricants, labour etc as required for running the air compressor during development of tube well, testing of the yield of finally developed tube well.

Dismantling of air compressor and its associated accessories, T&P etc complete in all respect after development of tubewell.

Development by O.P. Unit

Transportation of O.P. unit with all T&P and camp equipments with loading unloading etc. and proper stacking at site and after completion of work return back of T&P and O.P. unit etc. as above.

Installation of O.P. unit with lowering of bowl assembly, along with suitable size of M.S. column pipe oil tube & line shaft including fitting of discharge head, gear head and leveling, setting of engine of O.P. unit.

Development of T/W by O.P. unit including oil lubricant and labour charges with making of drain for disposal of water, cleaning of sand regularly from drainage during development work of T/W and Yield test of T.W.

Dismantling of O.P. unit after completion of development of T.W. and Verticality test of T.W.

A.K. ASSOCIATE

Drillexperts P Ltd

M/S HARISH CHANDRA SINGH