oa Impact of Fracturing and Drainage-Wide Production on Tight Gas Reservoir

Hydraulic fracturing has been established as perhaps the most compelling and attractive production enhancement technique for both conventional and tight gas reservoirs. However number of formation evaluation considerations must be accounted such as the location and distance of water and hydrocarbon contacts, layering and other barriers which could limit achievable production results.

Fracturing increases well potential as well as recovery when compared to un-fractured well. Orientation of a fractured well in relation to other wells plays a significant role in optimizing rate and recovery. The flow in a fractured formation is linear and its duration will increase as the stimulation level increases. At the limit, only linear flow is seen for a fully penetrating fracture in pseudo steady state well drainage, with adequate fracture conductivity.

This study focuses on fracture geometry, number of fractures, fracture spacing, half length, well configuration, well location, the impact of fracture geometry on enhanced recovery and aspect ratio.

On the basis of study (within the study limitations), we conclude that • Fractured horizontal wells are more attractive in tight gas reservoirs than vertical fractured wells and • Use of rectangular patterns in field development combined with hydraulic fracturing creates the potential for larger JDs and recovery.