XSite is a special-purpose software package designed to meet the
needs of hydraulic fracturing simulation. Main features available with
XSite include:
No assumptions regarding the fracture shape or trajectory
Fracture propagation in inhomogeneous and naturally fractured rock masses
Interactions
between hydraulic fractures, joints, and between stages and wells
(including the stress shadow effect and hydraulic connectivity) are
accounted for
In situ stresses may be specified
Arbitrary number of wellbores and injection points
Synthetic
microseismicity is generated as the fractures slip or propagate,
providing a method for model calibration with field observations
Non-steady fluid flow within joints and the intact rock
Proppant transport and placement
Thermal analysis
Heat conduction (and thermo-mechanical effects) in the rock and heat exchange with the fluid in fractures can be simulated
Approximated heat advection by injected fluid
Easy setup of models for multi-stage simulation
The model shown below simulates open-hole, sliding-sleeve hydraulic stimulation along the horizontal section of the borehole. Five stages are included in the model. The Sh,min in 50-m high reservoir is 30 MPa. The verical stress and SH,max are 42 MPa. The stress barrier between the reservoir and underburden and overburden is approximately 2 MPa. The horizontal segment of the borehole is oriented in the direction of Sh,min. For the sake of simplicity, the DFN was not explicitly represented in this model. For each stage, slick water was injected for 33 minutes at a rate of 11 m3/min.
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