Wireline Retrievable Super Flow Orifice Valve

The 1″ & 1-1/2″ OD wireline retrievable injection gas lift super flow orifice valves are used for continuous flow application. These are designed for circulating operations and provide a means of flow from casing to annulus through orifice and then into the tubing.

OPERATION
Super flow orifice valve utilizes an orifice venturi as well as a back check valve for continuous flow operations. Injection fluid enters through the entry ports and then flows through orifice venturi. Injection pressure moves the back check valve off the seat & thus allowing fluids to enter into the tubing. Reverse flow pushes the check valve on seat to prevent flow into the casing.

We have been successfully developed after conducting extensive in-house research the Super Flow Orifice Valve which is one step ahead of Conventional Orifice Valves available in the market. Its performance is dynamically tested by Institute of Oil & Gas Production Technology, ONGCL, Panvel, Mumbai, India.Flow Performance Curve of NOM – 14R Orifice Valve (Port – 12/64”) against different Upstream 2 2 Pressures i.e. 30 Kg/cm & 35 Kg/cm are depicted below and comparison with Conventional Square Edge Orifice Valve are also shown below.

ANALYSIS OF RESULTS
1) The Critical Flow rate was achieved at approx 0.878-0.879 pressure ratio of Down Stream Pressure to Upstream Pressure i.e. at a pressure differential of 12% compared to almost 50% in case of a Standard Orifice in a Conventional Orifice Valve.

2) The Actual Critical Flow rates obtained through the testing were approximately 20% higher than the calculated theoretical flow rates.