... mechanism seismicity american association aaron booterbaugh applied geoscience plane amplitude tensor orientation society exploration geophysicist journal High-resolution seismic monitoring insights on stress and fault orientations in the Delaware Basin Adam M. Baig*,Aaron Booterbaugh...

..., the seismic source representing the perforation shot must be known. To the authors’ knowledge, there is no available representation of such a source. We propose a three-mechanisms source model with three structured moment tensors whose magnitudes are to be determined. Following a three-step procedure, we...

... results show clear changes of the stress state over the pad that is likely directly related to the underlying geology and perturbations related to the hydraulic fracturing. inversion tensor seg technical program expanded abstract hydraulic fracturing mechanism american association upstream oil...

... of the reservoir. The bulk of in situ clathrates (referred to as clathrates and gas hydrates interchangeably in this paper) are type I structures, and formation is theorized through multiple mechanisms. Through specific nucleation techniques, type II and type H hydrates have been produced in laboratory conditions...

... Source mechanisms help understand the fracturing behavior and the evolving stress field in microseismic monitoring. This study presents how to retrieve the source mechanisms of hydraulic-fracturing induced events using a source mechanism screening test based on the S/P amplitude ratio and a full...

... Stress inversion is a challenging task. The data describing the stress field normally includes either direct in-situ measurements in the wellbore, or indirect data – focal mechanisms of microearthquakes in the area of interest. Joint inversion of the source mechanisms and various types...

... Using a physics-based shear-tensile crack model, we develop a Bayesian approach to simultaneously calculate source mechanisms for a set of microearthquakes and rigorously quantify the uncertainties of model parameters. To that end, we use the normalized displacement amplitudes of direct P-waves...

..., normalized deconvolution and zero-lag cross-correlation misfit functions. The new method simultaneously estimate the event origin time and the focal mechanism in a unified inversion framework. We demonstrate that the adaptive waveform match can accurately estimate moment tensors of microseismic events at far...

... monitoring production control hydraulic fracturing production logging near-field signal reservoir characterization artificial intelligence s-wave arrival applied geoscience geophysics nf event fiber-optic cable mechanism exploration geophysicist 10 waveform radiation pattern das amplitude p...

... Moment tensors of kinematically double-couple microseismic events triggered in anisotropic formations are known to exhibit non-double-couple focal mechanisms. Their weak anisotropy approximation reveals the combinations of anisotropy coefficients of vertically transversely isotropic focal...

..., stimulation or production phases. For inventing improved cements for effective zonal isolation, it is important to evaluate the bond strength of the cement-formation interface. Instead of just providing a number to evaluate cement bond strength, our method gives more detail on the failure mechanism in cement...

... tightly clustered, both spatially and in depth, and appear to be related to a southern boundary fault of the Fort St. John Graben complex. Stress inversion of a number of focal mechanisms suggests that the maximum principal stress is well constrained and almost horizontal, however the intermediate...

... Earthquakes induced by hydraulic fracturing are typically believed to be caused by elevated pore pressure or increased shear stress. However, according to a recent study, these mechanisms are incompatible with experiments and rate-state frictional models that predict stable sliding (aseismic...

... a result of scattering and fluid-related attenuation mechanisms due to the high density of density and high fluid content. The attenuation profiles show minor lateral variation, which is in agreement with velocity profiles recently obtained from full waveform inversion. Presentation Date: Wednesday...

... Continuous seismic monitoring systems aid us to act on preventing strong earthquakes, such as induced by oil and gas extraction, deep geothermal systems and carbon sequestration. These systems provide the data to detect and locate such events and to determine their source magnitude and mechanism...

... Processing of combined microseismic data from two independent sparse seismic monitoring networks deployed at the (near-)surface around the Illinois Basin – Decatur Project (IBDP) injection site was done to characterize the detected seismicity by locations and inverted source mechanisms...

... porosity and permeability inversion technology is proposed for 3D two-phase cracked orthorhombic media based on the BISQ mechanism. First, we derive the porous elastic wave equation of 3-D two-phase orthotropic anisotropic medium and build the relationships among porosity, permeability and phase velocity...

... ABSTRACT I present two examples of microseismicity in the Midland basin where the source mechanism nodal planes indicate shearing is persistently aligned with the hydraulic fracture or, alternatively, orthogonal to the hydraulic fracture. I consider arguments for both possible solutions where...

... ABSTRACT The influences that clay minerals have on tight sandstone elastic behaviors and the interpretation of associated mechanisms remain poorly understood. One of the important reasons for this lack of understanding is that natural tight sandstones have complex mineral compositions...

... tomography annual meeting mechanism multi-attribute microseismic analysis rock mass complex relationship abutment stress direction variation dpa tomography international conference inversion microseismic event seismicity upstream oil & gas Baig , A. M. , K. Bosman...