United Drilling Tools Ltd Phase 2, Noida, Uttar Pradesh

"UDT Make" Orifice Valves is a retrievable valve used to install in the side pocket mandrel prior to circulation. It prevents the pocket damage from abrasive well fluids while circulating. Efficiency of back check valve provides large flow capacities. Positive sealing feature of back check valve provides protection from intrusion of production fluid into casing annulus. Various orifice materials (SS, monel, inconel & tungsten carbide) available to meet application requirements. Orifice sizes available for this valve design range from 18 through 716 inch in 1 inch size and from 18 through 5 164 inch in 1 1 2-inch size, thus making them suitable for a wide range of operating conditions.

"UDT MAKE" lifting subs can be either tapered or square shoulder types and are made from AISI 41454140. They are available in all diameters and lengths. When ordering , specify size and type.Drill collar connection size & type and Bore.

In order to significantly improve the safety & life span of stabilizers UDT has offered after extensive engineering studies and field experience the Integral Blade Stabilizers. "UDT Make" integral blade stabilizer has a single body made of 4145 H modified alloy steel fully heat-treated to 285-341 Brinell hardness and 40 ft lb minimum impact strength. UNITED stabilizers are available in either near bit or string type.Connections are coldrolled, phosphatized, coated and equipped with thread protectors. These are gauged to API standards. “UDT MAKE” Integral Blade Stabilizer are sturdy, rugged and easy to repair and maintain tools which can be safely used in highly deviating wells for side tracking and fishing etc. Our stabilizer shall provide 250 to 360 degree hole wall contact and the rib surface shall be hard faced as described under heading hardfacing.

"UDT MAKE" 'AN' Series Valves are charged with nitrogen pressure acting on the bellows. This determines the set pressure of the valve. Nitrogen charged valves are primarily sensitive to casing pressure. The valve is open when the combination of pressures supplied by the casing and tubing exceed the dome pressure. As the casing pressure declines to the valve set pressure, the gas lift valve closes. Since the casing pressure controls the valve operation, the nitrogen charge is reduced in each lower valve to avoid interference with the upper valves. All UDT Series Valves are suitable for either continuous, flow or intermittent lift wells.