Effect of Horizontal Well Length Variation on Productivity of Gas Condensate Well

The development of gas reservoirs and the key decisions to be
made concerning gas reservoirs such as the number of wells to
drill, well fracturing and capacity of the surface processing
facilities are dependent on its productivity. Condensate
blockage caused by liquid build up is difficult to control in the
aforementioned reservoirs thereby affecting production. In this
work, production is optimized from gas condensate reservoirs
using horizontal wells. This is to demonstrate the performance
of horizontal wells and vertical wells in gas condensate
reservoirs and to study the effect of well length on horizontal
well productivity and condensate recovery. A compositional
simulator was used to carry our reservoir simulations on a 3Dmodel with properties similar to the typical Niger Delta gas
condensate reservoir. The results of the sensitivity analysis of
horizontal well length impact on productivity and the
comparison between production capacity of a gas condensate
well with the use of both vertical and horizontal wells using the
criteria: drawdown pressure, condensate saturation build-up,
well production rates, cumulative production, showed that the
horizontal wells performed better than the vertical wells.