Joint Surface Downhole Microseismic Event Location

MSc thesis collaboration between ETH Zurich and Schlumberger Gould Research, Cambridge, UK. - A hydraulic stimulation operation in the Marcellus shale, Pennsylvania, was monitored by means of coalescence microseismic mapping, with receiver arrays downhole, in a horizontal well, and at the surface, in a radial geometry. The results of each survey...

Pore Pressure Effects on Net Fracture Pressure and Hydraulic Fracture Containment

In hydraulic fracture modelling, fracture geometry along with the net pressure distribution in the fracture are the parameters the values of which are sought to be predicted away from the wellbore. In current industry standard fracture modelling packages, fracture dimensions are obtained from equilibrium height growth simulation models that are...

The influence of biofilm development on the effective gas permeability in hydraulic fractures

Shale gas is natural gas captured in low permeable shale formations, to be able to produce this gas the permeability of the reservoir needs to be enhanced. Hydraulic fracturing is used in low permeable reservoirs to increase the permeability and make gas production possible. Fracking fluid is pumped in the reservoir at high pressure to create...