... West Texas has been a seismically active region in the past decade due to the injection of industrial wastewater and hydrocarbon exploitation. The newly founded Texas seismological network has provided a catalog that characterizes the intense seismicity down to a magnitude of 1.5 Ml. However...

... allows for not only these largest two events to be characterized, but for a high-resolution picture of the smaller magnitude seismicity to be constructed. We observe that these two events are separated by a relatively quiescent block that is outlined by lower-magnitude seismicity. Although elevated pore...

... of the induced seismicity of the considered case study. seismicity exploration geophysicist american association geology characterize hydraulic microseismic cloud geologist reservoir characterization fracture dinske induced seismicity microseismic data downward direction hydraulic fracturing...

... Presented here are three 2D resistivity cross-sections of the axial fault region within the New Madrid Seismic Zone (NMSZ), obtained using broadband magnetotelluric (MT) equipment, which surpasses the resolution of previous long period MT equipment. By integrating the seismicity distribution...

... We describe an integrated data collection effort to understand and mitigate seismicity in the Midland Basin. Step rate tests (SRT), pulse tests, log and seismic data were leveraged to determine reservoir conditions and available storage capacity for the injection target, the Ellenburger Group...

... Intersecting faults are often ignored in the geomechanical simulation of induced seismicity. To investigate the effects of fault intersection and the resulting reservoir geometry on induced seismicity, caused, for instance, by gas extraction, we have developed 3D geomechanical models considering...

... The Midland Basin of West Texas is an important petroleum producing region that has experienced an increase in the rate and magnitude of seismicity, with 50 ≥ 3.0 Mw events since 2019, many of which have been linked to oilfield practices, mainly the disposal of oilfield wastewater (SWD). SWD...

... Both P-wave and S-wave velocity models are needed for location of induced seismicity from sparse monitoring arrays. While P-waves are usually known (reflection surveys or sonic logs), S-wave models need additional constrains. We use seismic noise interferometry to obtain Rayleigh surface waves...

... A number of earthquakes in West Texas have been monitored with a relatively high-density seismic monitoring network since 2018. The number of stations enables precise locations and numerous moment tensors to be determined in this area. High-precision (relative) locations allow for fault...

... Increased seismicity due to subsurface activities has led to increased interest in monitoring and seismic risk mitigation. In this study we combined passive and active acoustic monitoring methods to monitor fault sliding and reactivation in the laboratory. Acoustic emission (AE) and ultrasonic...

...-million-ton CO 2 injection scenario. The objective of network design is to meet specific detectability targets bas ed on induced seismicity, caprock leakage, and hidden feature risks. subsurface storage requirement exploration geophysicist upstream oil & gas seismicity international...

... Understanding the causative activity and host formation of induced seismicity requires accurate hypocentral depth determinations. Depth determination is greatly complicated in the Delaware basin by the presence of the shallow, high seismic velocity, Ochoan salt-evaporite layer and by the paucity...

... We report lab results that a fluid-filled fracture can amplify the pressure carried by an incident seismic wave. We built a fracture model and placed our newly designed pressure sensors (Xfrac-H) inside the fracture to directly measure the fluid pressure in the fracture during wave propagation...

... This study provides spatiotemporal constraints on seismicity within fault zones and identifies key links between fault step and event migration. We show that event distributions in seismic swarms can image stepping geometries reminiscent of relay zones commonly observed along fault zones...

... The substantial rise of seismic activity observed in both Oklahoma and Kansas from 2012-2016 has been widely linked to the similar increase in downhole injection of wastewater which occurred during that time. Injection of fluids into the subsurface is typically related to the extraction...

... disposal upstream oil & gas reservoir characterization exploration geophysicist equation hypothetical earthquake society american association permian basin inducement scenario international table 1 enhanced recovery seismicity injection applied geoscience modeling energy 10 Rapid...

... Current efforts to analyze the risk of induced seismicity caused by fluid injection, and to develop mitigation strategies with a rigorous scientific basis, are hindered by a lack of numerical models incorporating the full physics of the problem. We outline an approach in which realistic Earth...

... Relative contributions of local and regional disposal practices to triggering earthquakes in central Kansas were established through spatiotemporal analysis of formation pressure, disposal volumes, and measured seismicity. A persistent earthquake swarm in Hutchinson, Kansas, is a concern...

... On 30 November 2018, a felt (ML 4.5) seismic event occurred ~16 km from Fort St. John, British Columbia, that has been attributed to ongoing hydraulic fracturing operations in the area. The mainshock was followed by two felt aftershocks (>ML 3.4) in the following hour. All of the events were...

... slip) for faults with high clay content or total organic carbon, as well as observations of the timings and locations of the seismicity. An alternative model was therefore proposed, in which distal, unstable regions of a fault are loaded by aseismic slip on stable regions of the fault stimulated...