... on the available data while avoiding their inherent shortcomings. geologist geology artificial intelligence geological subdiscipline borehole data neural network reservoir characterization dataset geophone applied geoscience & energy 10 american association hydraulic fracturing machine...

... There are problems with inconsistent seismic wavelets and geophone coupling in uphole survey data, which can reduce the accuracy of near-surface Q value. Firstly, conduct three amplitude spectrum ratio calculations on four uphole survey data from two shooting points and two receiving points...

... is a DAS-VSP dataset. geology geologist seismogram vertical seismic profile applied geoscience & energy 10 reservoir characterization receiver geophone interferometry procedure time window american association super-virtual interferometry dataset real time system exploration...

... incorporate a vertical component. Three 1x1x1 m sensors (the “Croissant”) were installed and tested in 2023. Initial results show good comparability to Pretzel data as well as to surface geophone data converted to strain-rate. sensor pretzel expanded abstract geologist gauge length field data...

... needs to be automatic and in real-time. For the latter requirement, processing workflows using 3-component (3C) downhole geophones have been established in the industry for years, mainly for short-term monitoring, e.g. for hydraulic fracturing. With the increasing interest in CO2 sequestration...

... Historically, Permian Basin converted wave 3D seismic surveys were acquired based on a P-wave acquisition design to image a range of depths that cover the hydrocarbon reservoir of interest. The three component geophones were occasionally included on land surveys. However, the design...

... the derived angles. Using the recovered amplitudes, we generate horizontal and vertical hodograms that are comparable to those of a 3C geophone at the DAS array center (x=0, y=0). Our DTT and waveform modeling results show that a 3D optimally distributed fiber cable can effectively acquire 3C DAS array data...

... Monitoring CO 2 sequestration is critical in carbon capture and storage (CCS) to ensure storage safety. Compared to conventional geophone data, distributed fiber optic sensing (DFOS) can provide better spatial coverage with finer sampling in a more cost-effective fashion. Based on a vertical...

... and compare them to 3C geophones and straight DAS cables. We further evaluate three different source types considered for various applications. Field trial provides comprehensive datasets for assessing the initial performance of DAS cables in sand dune environments for surface seismic with DAS...

... enhanced geothermal systems. We apply a shear-wave splitting analysis method, based on eigenvector rotation, to six induced micro-earthquakes recorded using a 3-component geophone array deployed in a borehole at the Utah FORGE (Frontier Observatory for Research in Geothermal Energy) site. We determine...

... and direct investigation. exploration geophysicist southern california international energy 10 upstream oil & gas siting recharge basin bedrock aquifer collier geophysics recharge basin resistivity applied geoscience lsjb geophone reservoir characterization american association...

... The measurements made with distributed acoustic sensing (DAS) are known to be proportional to either strain or strain-rate, depending on the system configuration. However, quantitative comparisons between measurements made with DAS and geophones for surface arrays have been difficult because...

... upstream oil & gas geophone green information american association society geophysics seismic interferometry Subsurface monitoring during tunnel excavation area using auto-correlation Enhedelihai Nilot*, Gang Fang*, Yun Zhou Tan*, Yanlong Niu*, Heng Zhang and Yunyue Elita Li *Sustainability...

... We carried out comparative data acquisition of active and passive surface wave methods using distributed acoustic sensing (DAS) and three-component velocity meters (geophone) at a research field located in Richmond, California, U.S. Several different fiber optic sensor cables were deployed...

...% reduction in standard deviation compared to the standard processing techniques. upstream oil & gas correction impedance frequency spectrum international american association reservoir characterization enhancing conventional vsp data wavefield inversion applied geoscience geophone...

... & gas sand dune exploration geophysicist 10 new waveform q-value survey technology bottom geophone case study geophone different thickness absorption attenuation q-value waveform Q-value survey technology and case study of low-velocity layer in desert area of Tarim Basin Peng Gengxin 1...

... sub array artificial intelligence sb array borehole geophone reservoir characterization microseismic monitoring superstation array expanded abstract exploration geophysicist 10 shallow borehole array surface array channel count sensor machine learning upstream oil & gas reference...

... Land seismic is evolving towards denser surveys, single sensor recording, and lower frequencies. A number of new nodal systems have been introduced to facilitate this evolution: some use moving coil geophones, while others use new sensors, based on MEMS or piezoelectricity, which record...

... sensors in cities has been shown to have a high coherence with traffic flow. To use seismic data for traffic monitoring, it is important to achieve interpretive traffic information rapidly and accurately from seismic characteristics. We analyze the seismic signals recorded by a group of wireless geophones...

... geophone Estimation of Rayleigh to Love waves ratio from ambient noise recorded by DAS Yumin Zhao*, Yunyue Elita Li, and Bei Li, Sustainability Geophysics Project, National University of Singapore SUMMARY High frequency (above 1 Hz) urban ambient noise, mainly generated by motor vehicles, may contain...