Utilisation of seismoacoustic monitoring in tight gas reservoirs

Abstract

This literature study on the utilisation of seismoacoustic monitoring in tight gas reservoirs investigates the following subjects: relevant reported cases of seismoacoustic monitoring, mechanisms of microseismicity, data processing and visualisation methods and software, interpretation approaches, feasibility and advantages of frac-monitoring in tight gas reservoirs and feasibility and benefits of monitoring for reservoir characterisation. Focus was on two main applications: (a) seismoacoustic monitoring for describing hydrofracturing within tight gas reservoirs, (b) permanent seismic installation for monitoring of production- and injection-related processes (e.g., fluid front movements) in oil/gas reservoirs. Major outcome of the study is the listing of the benefits of a seismic monitoring, as well as an estimation of the constraints of feasibility. For four monitoring scenarios in tight gas reservoirs, benefits and feasibility were evaluated. A conclusion with recommendations (technology, installation, data handling, interpretation) for the utilisation of seismoacoustic monitoring in tight gas reservoirs was drawn. (orig.)Available from TIB Hannover: RN 4117(593-1) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEDEGerman