OPTIMIZATION OF MULTI-FRACTURING IN HORIZONTAL WELL

Hydraulic fracturing is a process through which a large number of fractures
are created mechanically on the rock, thus allowing the natural gas or crude
oil trapped in subsurface formations to move through those fractures to the
wellbore from where it can then flow to the surface. The multi-cluster
fracturing in horizontal well is more complex in shale gas reservoirs.
Stimulated Reservoir Volume (SRV) technology for fracturing is used for
exploiting shale gas reservoirs. The multiple fractures in horizontal wells are
used to increase the recovery and the productivity in tight and shale
reservoirs. The productivity of fractured well is affected by factors such as
reservoir permeability, hydraulic fracturing angle and distribution of
fractures. Optimization of the influence of reservoir properties and fracture
parameters are studied. The design and modelling of the multi-fractured
horizontal wells are carried out. The results show how the volume fracturing
technology improves the gas well productivity in horizontal well for the
complicated flow characteristics in shale gas reservoirs.
Keywords: Horizontal well, Multiple fracturing, Shale gas, Tight gas, SRV