1-20 of 40539 Search Results for

Dispersion

Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Proceedings Papers

Publisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 28–September 1, 2022
Paper Number: SEG-2022-3751838
... Hourly dispersion images are computed in the field from ambient noise data to monitor an active landslide. We look for evidence of time-lapse velocity changes in the dispersion images themselves, rather than performing a traditional MASW inversion, to get an early indication of changes...
Proceedings Papers

Publisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 28–September 1, 2022
Paper Number: SEG-2022-3750346
... extracts the frequency-dispersion AVO characteristic parameters to achieve the purpose of fluid identification. The application results of real seismic data demonstrate the effectiveness of this method. Note: This paper was accepted into the Technical Program but was not presented at IMAGE 2022 in Houston...
Proceedings Papers

Publisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 28–September 1, 2022
Paper Number: SEG-2022-3751154
... Interpreting formation shear slowness from logging-while-drilling (LWD) quadrupole sonic dispersion data remains a challenge due to its nonasymptotic characteristics at low frequencies. We have developed a fully automated solution, i.e., machine learning enabled automatic quadrupole...
Proceedings Papers

Publisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 28–September 1, 2022
Paper Number: SEG-2022-3751174
... We propose a surface-wave analysis method, extrapolated dispersion inversion (EDI), to image the near-surface shear-wave velocity structures beyond the penetration depth of conventional surface-wave inversion methods. Active-source surface waves are the main type of seismic data for an imaging...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 3–5, 2022
Paper Number: SPE-210317-MS
...-based wax dispersants have been frequently used to combat excessive wax deposition during frac. Polymer-based paraffin inhibitors, despite being more effective and more soluble in crude oils, however, have not been extensively deployed because they are insoluble in water and incompatible with commonly...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 3–5, 2022
Paper Number: SPE-210006-MS
... a relaxation time correlation assuming representative Maxwell-Wagner relaxations for the key pore components demonstrated by Myers. The distributions of dielectric relaxation times evident in carbonate dispersion curves from 1 – 300 MHz were quantified using the Havriliak-Negami (HN) model...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 3–5, 2022
Paper Number: SPE-210090-MS
... on different aggregation stages? To answer these questions, a " profiling" approach—study asphaltene aggregation kinetics by a variety of dispersant tests to correlate these properties with deposition tests was proposed. Specifically for the dispersant test method chosen, traditional Turbiscan, modified...
Proceedings Papers

Paper presented at the SPE Nigeria Annual International Conference and Exhibition, August 1–3, 2022
Paper Number: SPE-211935-MS
... Heavy gas dispersion model is employed in this research work with the aid of the ALOHA software to evaluate and predict the dispersion of the accidental release scenarios involving LPG (propane and/or butane). Heavy gas dispersion model is attributed for use for dense or heavier-than-air gases...
Proceedings Papers

Paper presented at the SPWLA 63rd Annual Logging Symposium, June 11–15, 2022
Paper Number: SPWLA-2022-0021
... controls permeability, hence these relationships carry high uncertainty in uncored intervals and nearby wells. Dielectric dispersion, on the other hand, is inherently linked to the pore geometry since it is sensitive to charge build up at the rock-fluid interfaces of the interconnected pore network through...
Proceedings Papers

Paper presented at the SPE Conference at Oman Petroleum & Energy Show, March 21–23, 2022
Paper Number: SPE-200261-MS
... by sweeping native hydrocarbon gas with an inert gas. This paper treats the reservoir engineering aspects of dispersion in gas displacement by nitrogen. Methods Relevant theory and knowledge from literature are applied to an example sandstone gas reservoir. Results The displacement is typically...
Proceedings Papers

Paper presented at the Offshore Technology Conference Asia, March 22–25, 2022
Paper Number: OTC-31447-MS
... seawater ph monsoon water column plume footprint a-field gas bubble seepage co2 leakage marine dispersion modelling seepage scenario scenario Introduction Carbon, Capture, Utilization and Storage (CCUS) is a key strategy for PETRONAS as part of its sustainability agenda and to achieve its...
Journal Articles
SPE Drill & Compl 37 (01): 67–76.
Paper Number: SPE-208589-PA
Published: 09 March 2022
... negatively charged clay platelets, thereby improving drilling fluid functionality and pore-plugging performance, reducing shale dispersion, and ultimately enhancing shale stability. Tests carried out to study the performance of the synthesized ANs include particle size analysis, Fourier transform infrared...
Proceedings Papers

Paper presented at the International Petroleum Technology Conference, February 21–23, 2022
Paper Number: IPTC-21948-EA
... the borehole is 4500m/s and 2650m/s, respectively. The new proposed AFDAES method will be applied into this model. Results on monopole waveforms. Abstract Dispersion and attenuation analysis can be used to determine formation anisotropy induced by fractures, or stresses. In this paper, we propose...
Proceedings Papers

Paper presented at the SPE Middle East Oil & Gas Show and Conference, November 28–December 1, 2021
Paper Number: SPE-204904-MS
... process. The measurements are sensitive to greater depths inside the formation and capture the frequency dependence (dispersion) of the dielectric properties. Dielectric dispersion can be modeled in terms of rock petrophysical properties such as water filled porosity, water resistivity and water phase...
Journal Articles
Journal: SPE Journal
SPE J. 26 (06): 4000–4021.
Paper Number: SPE-206728-PA
Published: 15 December 2021
... mobilize the trapped oil depending on the flow regime and salt dispersion pattern. The complex interplay between the wettability, capillary number ( N Ca ), and salt dispersion caused by pore-scale heterogeneity on the efficiency of LSWF is not well understood. In this paper, direct numerical simulations...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3594524
... Multi-mode dispersion curve picking is required by many approaches for shallow-subsurface characterization using surface waves, but is typically a labor-intensive process. Previously we automated the picking procedure using convolutional neural network (CNN) based machine learning (ML) method...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3582711
... artificial intelligence efficiency k-mean upstream oil & gas shot gather false pick exploration geophysicist 10 unsupervised learning reservoir characterization applied geoscience centroid point geophysics dataset algorithm machine learning dispersion spectrum urban area...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3583043
... We introduce a method to estimate dispersion images for surface waves and guided waves using a hybrid linear-hyperbolic Radon transform and sparse inversion. The hybrid Radon transform can model both reflections and surface waves in the data more accurately than the standard linear Radon...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3583650
... ( V P ) initial models (i.e., laterally homogeneous and variable), retrieved from dispersion curves (DCs) analysis. resolution initial model elastic full-waveform inversion sw analysis upstream oil & gas acquisition layout exploration geophysicist 10 near-surface heterogeneity...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3583782
... that in hydrocarbon reservoirs, where the pore space is saturated by two-phase fluids, capillary pressure and interference betweeen the fluid of the two phases induce additional velocity attenuation and dispersion of seismic waves. We present a Finite Element (FE) procedure to determine the phase velocities...

Product(s) added to cart

Close Modal