... Regional seismic networks typically monitor and locate seismic sources using only kinematic (i.e., traveltime) observations. We propose an automated “sliding box” procedure to improve source locations by leveraging dynamic (e.g., full waveform) information via Geometric-mean Reverse-Time...

... differential pressure (internal pressure higher than external pressure) and Yield-Before-Leak under negative differential pressure. Both failure modes exhibit a linear correlation with the Mean Normal Stress, defined as the average of the three normal stresses, but the slopes are different. The results raise...

... It has been shown that Geometric-mean Reverse-Time Migration (GmRTM) can produce source images with improved resolution than conventional time-reversal imaging in acoustic media. Here, we extend this cross-correlation-based imaging method to elastic media. Back-propagation and Helmholtz...

... Geometric-mean Reverse-time migration (GmRTM), a powerful crosscorrelation-based imaging method, generates higherresolution source images and is more robust to noise compared with conventional time-reversal imaging. The price to pay is the requirements of more accurate velocity models and much...

... Abstract Subsurface pumps and production tubulars are one of the important means for the production of crude oil from the subsurface to the surface installation in mature oil and gas fields. The health of downhole pumps and tubulars is severely endangered by the electrochemical deterioration...

... hole reservoir evaluation operator workflow symposium june 24 well intervention production enhancement correlation pulsed neutron evaluation correction cement bond SPWLA 61st Annual Logging Symposium, June 24 to July 29, 2020 1 CASED HOLE RESERVOIR EVALUATION AS A MEAN OF RISK REDUCTION...

... the mean Z 2 values of all profiles on the joint surface, rather than picking out one or several typical profiles, as estimated parameter to predict the JRC values. The calculated Z 2 values and JRC values diminish with the increase of sampling intervals. Through analyzing the measured JRC values under...

... and manganese counts from produced water from oil fields in the US. This research will further investigate the mean time to failure in the laterals and suggest proactive plans for mitigating failures based on findings. High Fe/Mn concentrations could lead to corrosion in producing wells. High densities of Fe...

... ABSTRACT Full waveform inversion (FWI) suffers from the problem of cycle skipping because the observed data lacks lowfrequency components and estimation errors of the wavelet. In addition, the strong low-frequency non-mean noise can have a large impact on FWI results. In this paper, we...

... Abstract The stress redistribution path is complicated in the surrounding rocks of deep underground caverns. Constant mean stress path is a typical loading path for which all the principle stresses change during the differential stress loading while the mean stress keeps constant. This paper...

... Abstract In this work, we derive an effective mean free path (MFP) model for the confined gases in nanopores of shale gas reservoirs by taking into account the effects of the geometrical termination and the surface-gas interaction of the boundary. Among which, the effect of the surface-gas...

... Decline Rates Could Mean Growing Project Spend and More Deals Ryan Duman, Robert Clarke*, Wood Mackenzie. Copyright 2019, Unconventional Resources Technology Conference (URTeC) DOI 10.15530/urtec-2019-432 This paper was prepared for presentation at the Unconventional Resources Technology Conference held...

... ABSTRACT: Reliable estimates of far-field stresses are indispensable for robust rock engineering analysis. Here, by using the combined finite-discrete element method, we simulate a series of stress fields of a natural fracture network to examine whether the Euclidean mean of local stresses...

...Abstract Abstract Whilst it is known that mean stress has an effect on the fatigue endurance of steel components, this effect is not considered when designing mooring system components. The S-N and T-N fatigue design curves for mooring chain in the standards are based on tests carried out...