Downhole Fluid Analysis and Sampling Establishes Compositional Gradient in a Deep Water Gas-Condensate Reservoir

The paper demonstrates how to establish a compositional<br>gradient in Dhirubhai-26 (MA) retrograde gas-condensate<br>reservoir situated in a deep water territory of KG Basin, India,<br>with the help of real-time Downhole Fluid Analysis<br>(DFA).The reservoir consisted of an oil rim sandwiched by a<br>large gas cap and bottom water. Very low contamination<br>samples were captured downhole, using a Wireline Formation<br>Tester (WFT), in Single Phase PVT bottles. This success was<br>achieved through the combined use of DFA results, PVT data<br>and a tuned Equation of State (EoS).