1. Choke Correlation and Gas Lift Curves P2ES Provides Several Curve Options 1.CC – Choke Correlation Curve Based on Oil Rate (OR) Based on Total Liquids (TR) Gas Lift Based 2.PQ – Pressure Quantity Based on Tubing Pressure

2. R(fluid) = R max (fluid) * [1 - e -k(choke - c) ] Where: R (fluid) = calculated fluid flow rate (sum of net oil and water measured in bbl/day or m 3 /day) R max (fluid) = maximum fluid flow rate (bbl/day or m 3 /day) k = decay constant derived by curve fitting process (typical values will be positive, but less than 1) choke = wellhead choke position. In imperial units, this is a value measured in inches (x/64"). In metric units, this is a value measured in millimeters. c = computed parameter (c has a value of 0.0 if the ‘Calc Offset’ check box is not checked) Choke Correlation Curve

3. R(oil) = R max (oil) * [1 - e -k(gas lift rate - c) ] - D*gas lift gas rate Where: R (oil) = calculated fluid flow rate (net oil and water measured in bbl/day or m 3 /day) R max (oil) = maximum flow rate (bbl/day or m 3 /day) k = decay constant derived by curve fitting process (typical values will be positive, but less than 1) gas lift rate = gas flow rate from well tests or allocation (MSCF/day or KSM3/day) c, D = computed parameters Gas Lift Choke Correlation Curve

4. CREATING -- CHOKE CORRELATION GAS LIFT CURVE

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10. Verifying A Well Test Using Choke Correlation Calculation

11. CREATING -- CHOKE CORRELATION GAS LIFT CURVE