... than 42% improvement when compared against those obtained from NMR-based permeability assessment methods. The new method provides real-time and depth-by-depth assessments of the pore-throat size distribution and capillary pressure, minimizing the need for core-based calibration efforts and eliminating...

...Philipp Müller; Christian Hermanrud; Haakon Fossen Fault permeability prediction typically relies on empirical relationships between permeability and clay content or burial depth. Calibration of such methods relies on either core data or subsurface observations of fluid pressure and hydrocarbon...

... dioxide – 0.1482–21.1602, methane – 0.0017–8.3047 and its homologues (in total) – 0.00001–0.0355 cm 3 /kg. It was found that the values of average concentrations of gases in bottom sediments increase with the depth of their occurrence and exceed the anomaly criteria identified for the East Arctic shelf...

... ‐values of 46 stations were obtained using two methods based on the distance dependence of κ . The source parameters for 9966 events were estimated using the Snoke method ( Snoke, 1987 ). The measurement of κ revealed an obvious magnitude dependence at most stations, and depth dependence at shallower...

... Aktogai deposit exhibits formation depths and fluid evolution processes similar to Mesozoic and Cenozoic porphyry Cu deposits worldwide. The close association between Cu-Fe sulfides and later quartz formed under intermediate-temperature conditions at Aktogai implies that Cu-Fe sulfides...

... fault. The overall depth distribution reveals shallow hypocenters mainly constrained in a seismogenic layer up to 15–20 km. Our results display a remarkable hypocentral clustering compared with the Instituto Geográfico Nacional (IGN) earthquake catalog solutions and an improvement in the accuracy...

...Feng Youliang; Wu Longyun Abstract In order to investigate the distribution patterns of in situ stress in the main coal seams (3 # and 15 # ) of the Qinshui coalfield, an in-depth analysis was conducted on the in situ stress measurement results obtained from 139 measurement points across 46 mines...

... the resulting source spectra. By this approach, we measure moment magnitudes reliably to as small as M L 1.0. We find stress drop increases with both depth and magnitude and discuss whether this could be an artifact through assumptions about the source, path, and site. KEY POINTS We measure seismic...

... is the line along which the event depth cross‐section was plotted. The inset map shows the location of study area Palghar (red rectangle) in the Indian sub continent. The green region marks the Deccan volcanic province (DVP) region. The color version of this figure is available only in the electronic edition...

...Yonghe Guo; Ahmed Aziz; Anna Sedova; Mathieu Reinier; Daniela Donno; Gilles Lambaré; Diego Carotti Abstract Velocity model building and depth imaging are known to be complicated endeavors in numerous onshore areas in the Middle East. Despite recent advancements toward denser, wide-azimuth, and low...

... increases with density and also with depth ( Fig. 2 ). Typically, more mafic or higher-metamorphic-grade rocks have higher seismic wave speeds than more felsic or lower-metamorphic-grade rocks ( Salisbury et al., 2003 ; Greenhalgh and Manukyan, 2013 ; Junno et al., 2020 ). The ANT method utilizes...

... weathering. The upper portion of this unconventional secondary reservoir, generally within 300 m below the exposure-caused unconformity, is optimized by the feldspathoid dissolution due to depth-dependence weathering. However, the space created by fractures is significant down to a depth of up to 1000 m...

... and tectonic events, which is consistent with previous findings, though we note the narrow magnitude range in this study. Such nonself‐similar scaling, if true, may be related to the depth dependence of the stress drops for tectonic events and the perturbation of pore pressure for induced events. This study...

... to minimize errors. This process was repeated until the number of channels exceeding the threshold reached 800 or until no more channels exceeded the threshold. To improve the accuracy of the calculation results, the focal depth was constrained to a range of 0–50 km. The flowchart of the method is shown...

... a significant increase in up‐dip shear stress at the seismogenic depth, explicitly on a slowly deforming High‐Atlas Mountains in western Morocco. The increased stress contributes to the ongoing interseismic tectonic loading on the steeply dipping Tizi n’Test fault and might have led to a significant clock...

.... During this period of recurrent environmental perturbations, conodonts responded to sea-level changes only above a certain depth threshold, which is reached only with the semichatovae event. * Correspondence: [email protected] Scientific editing by Nicholas Hogancamp...

... depths. We compare the double‐pair double‐difference to event‐pair double‐difference relocations and study the effectiveness and uncertainties of both methods. Although double‐pair double‐difference relocation does not improve absolute locations, substantially improved relative locations and reduced...

... modeling that integrated all of the available constraints, and the average depth to the basement at the basin centers calculated from gravity modeling is 4–5 km. However, for Chintalapudi sub-basin, if the residual gravity anamoly is considered, it may be reduced to about 3.5 km. Fig. 2. Regional...

...., Railroad Commission of Texas [RRC] and New Mexico Oil Conservation Division), which rely on public data. Therefore, there are numerous earthquake catalogs available for the region, each with intended uses, strengths, and weaknesses. Each earthquake is cataloged with location and depth uncertainty...

...Jun Ge; Jean-Philippe Nicot; Katie M. Smye; Amanda Z. Calle; Peter Hennings; Elizabeth A. Horne; Jianqiao Leng ABSTRACT Deep formations of the Midland Basin, from the top of the Pennsylvanian-age Wolfcamp D interval (∼8000 ft [∼2400 m] in depth) to the Ordovician-age Ellenburger Group (>10,000...