DRILLING TECHNOLOGY - DRILLING OF DEEP TUBEWELLS, RECTIFICATION OF SICK/ABANDONED TUBEWELLS, RESISTIVITY SURVEY, DRILLING INNOVATIONS, DEVELOPMENT OF TUBEWELLS, ELECTRICAL LOGGING

DRILLING OF DEEP TUBEWELLS

RECTIFICATION OF SICK/ABANDONED TUBEWELLS

RESISTIVITY SURVEY

DRILLING INNOVATIONS

DEVELOPMENT OF TUBEWELLS

ELECTRICAL LOGGING

We are
INDIA'S Ist

TUBEWELL DRILLING
COMPANY

We are
MEMBERS OF

National Ground Water Association (USA)

Australian Drilling Industries Association (Australia)

Indian Water Works Association(INDIA)

Drilling Today Technologies

SCIENTIFIC APPROACH:

In order to eliminate the failure rates, potential sites are pinpointed with the help of Geophysical equipment that can investigate and infer the type of formations upto 1200 ft. depth and the interpretation is done using latest computer softwares in this field supported by hydrogeological investigation. The designing of the tubewells is done scientifically with the help of Electronic Well Logger that demarcates accurately the potential granular zones confirming the quality and quantity of the available ground water.Today, the company is proud to be instrumental in installation of more than 2600 successfull deep tubewells
in all type of areas spread over in Punjab,Haryana,Uttar	Electronic Well Logger EL 600
Pradesh, Madhya Pradesh,West Bengal,Jammu & Kashmir and Chandigarh for government,semi
government industrial houses and private individuals.

v REVERSE CIRCULATION ROTARY DRILLING

In direct rotary drilling, the viscosity and uphole velocity of the drilling fluid are the controlling factors in removing cuttings effectively. Unless cuttings can be removed, drilling cannot continue. Because of limitations in pump capacity and therefore effective cuttings removal, most direct rotary machines used to drill water wells are limited to boreholes with maximum diameter of 22 to 24 in(559 to 610 mm). This size may not sufficient for high-capacity wells, especially those that are to be filter packed.To overcome the limitation on hole diameter and drilling rate, reverse circulation machines were designed; originally they were used only in unconsolidated formations. Recently, reverse circulation drilling has been used in soft consolidated rocks such as sandstone and even in hard rocks using both water and air as the drilling fluid.Also, as hole diameters increase past 24 in,the rate of penetration by direct rotary machines

Reverse Rotary Capacity to drill below 2000" feet

becomes less satisfactory.

In reverse circulation rotary drilling, flow of the drilling fluid is reversed when compared with the direct rotary method. The suction end of the centrifugal pump, rather than the discharge end, is connected through the swivel to the kelly and drill pipe. The drilling fluid and its load of cuttings move upward inside the drill pipe and are discharged by the pump into the settling pit. Centrifugal pumps with large passageways are often used to pump the drilling fluid because they can handle cuttings without excessive wear on the pump. In operation, however, most of the cuttings do not actually enter the pump but bypass it by means of an eductor system . An uphole velocity of at least 150 ft/min(45.7 m/min.) is recommended. The fluid returns to the borehole wall to gravity flow. it moves down the annular space between the drill pipe and borehole wall to the bottom of the hole, picks up the cuttings, and reenters the drill pipe through ports in the drill bit.

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