Description
Shale and unconventional gas reservoirs represent a major element of the USA energy supply. Gas shale production is approaching 25% of total gas production and has reversed the gas policy of the country. The Haynesville shale production is now approaching 6 BCFD and is the largest shale gas producer in the country. Different than many other reservoirs, the Haynesville reservoir is deep HPHT environment with many challenging development features. Most notably, it is rock is soft, exhibit creep behavior, and its rock is pressure sensitive.
A special production strategy were developed in mid 2008 to address this pressure sensitive rock behavior. The strategy was based on controlling the drawdown on formation face and has led to an improved well performance, reduced production decline rates, and has the potential to increase reservoir EUR. The lecture will outline the different elements necessary to develop this strategy and will share two plus years worth of production comparison starting from the vertical well scoping program to the horizontal well field development.