Microseismic has been used basically to monitor hydraulic fracturing, which is a short term plan and to monitor steam injection, a long term plan. Recent advances in microseismicity technology has led to an increase in its usage in the reservoir monitoring activities such as gas storage, co2 injection , hydraulic fracture operations , production monitoring (oil and gas) etc., and thus, fast becoming a viable technique in oil and gas industry. This is because of its unique service it renders through provision of fast and accurate information about stress changes in a reservoir and the associated geomechanical deformation which are used to characterize complex fracture networks and fluid flow paths. Due to its relevance in monitoring fracture network and fluid flow paths, a lot of efforts and innovations in the recent years have been channeled to improving its mode of operations and its imaging capabilities. In this study, we highlighted the methods of acquiring and processing microseismic data, their limitations and pitfalls and its applications in unconventional reservoirs.
