Welcome to Bristol University Microseismicity ProjectS Welcome to Bristol University

Research Themes

The BUMPS consortium covers a range of research themes that mirror the microseismic processing workflow. The first stage of microseismic processing is to locate event sources. As well as using `conventional' phase picking and traveltime inversion, BUMPS has pioneered the use of migration and beamforming methods to accurately locate event with poor signal-to-noise with large, dense arrays.

As well as source locations, source mechanisms can provide a richer more information about the geomechanical processes occuring at depth. BUMPS is currently developing moment tensor inversion mechanisms that use the full waveform (rather than solely polarisations and amplitude ratios), providing a much more robust inversion method.

As seismic waves travel through fractured rocks, they are affected by the seismic anisotropy created by the fractures. Long recognised as world leaders in the study of anisotropy, BUMPS has lead the way in using seismic anisotropy measured on microseismic events to charaterise fracture networks.

Microseismic activity in oil reservoirs is a manifestation of geomechanical deformation induced by reservoir activities. As such, they cannot be fully understood without a sound geomechanical basis. BUMPS benefits from strong links with geomechanical consortia based at Bristol and Leeds Universities, finding strong interdisciplinarity between geomechanical modelling and microseismic observations.

The majority of microseismic monitoring occurs during hydraulic fracturing. However, microseismic monitoring is rapidly becoming an invaluable tool to guarantee safe storage of CO2 for Carbon Capture and Storage (CCS). As research providers to the PTRC Weyburn CCS project, BUMPS were the first group to analyse microseismic data from a CCS project. Our successes at Weyburn have continued as we analyse the microseismic data collected at In Salah.