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The AAPG/Datapages Combined Publications Database
Showing 5,199 Results. Searched 200,642 documents.
Finite-frequency transmission traveltime tomography in VTI media
Fei Luo, Lanlan Yan, Jiexiong Cai
International Meeting for Applied Geoscience and Energy (IMAGE)
... and (5.3) represent the first and second order u derivative of time for wavefield. 0 x , t ; x r is the adjoint wavefield with inverse time...
2024
Geochemical characterization of the mineralized transition between the Goldenville and Halifax formations and the interaction with adjacent granitoid intrusions of the Liscomb Complex, Nova Scotia
B. I. Cameron, M. Zentilli
Atlantic Geology
... zonation inverse se sont cristallisds lorsque la tempdrature a chutd; ils reprdsentent vraisemblablement un type xdnocristique fortement modifid. Des...
1997
A fast sweeping method based on coordinate transformation for eikonal equation on unstructured triangular meshes
Xin Chen, Danping Cao, Xin Fu
International Meeting for Applied Geoscience and Energy (IMAGE)
...) 𝑧 = 𝑧 + (𝑧 − 𝑧 )𝑢 + (𝑧 − 𝑧 )𝑣, with the inverse transformation (( ) ( ) ( )) 𝑢= , | | (3) (( ) ( ) ( )) 𝑣= , | | where...
2024
Automating the thresholding of multi-stage iterative source separation with priors using machine learning
Nam Pham, Rajiv Kumar, Sunil Manikani, Yousif Izzeldin Kamil Amin, Phillip Bilsby, Massimiliano Vassallo, Tao Zhao
International Meeting for Applied Geoscience and Energy (IMAGE)
..., doi: https://doi.org/10.1190/1.1820149. Beck, A., and M. Teboulle, 2009, A fast iterative shrinkage-thresholding algorithm for linear inverse...
2024
Petrophysical characterization of the mineralization at the Lisheen Zn Pb deposit, Ireland
Nanyu Wei, Tommie Tormey, Aline Melo, Koen Torremans, John Güven
International Meeting for Applied Geoscience and Energy (IMAGE)
..., ranging between 0.18 S/m and 0.25 S/m. Resistivity and conductivity are inverse physical properties, but results that are not entirely reciprocal...
2024
Improved synchrosqueezing matching pursuit incorporating w-transform
Chaohe Wang, Zhaoyun Zong
International Meeting for Applied Geoscience and Energy (IMAGE)
... function. And is the inverse of the frequency f . 1 (3) (t ) |f| Substituting (3) into (2) yields: S ( , f ) |f| 2 x(t )e...
2024
Research and application of Intelligent high resolution processing method based on ISTA-Net
Huahui Zeng, Qin Su, Sanyi Yuan, Lide Wang, Yanwu Xu, Huijie Meng, Deying Wang
International Meeting for Applied Geoscience and Energy (IMAGE)
... deconvolution, inverse Q filtering and compression wavelet, the resolution of seismic data can be improved by expanding the dominant frequency of seismic...
2024
Integrated Rock Characterization of a Shale Gas Field in the Horn River Basin, Canada
Tadesse Weldu Teklu, Daejin Park, Hoiseok Jung, Jennifer L. Miskimins
Unconventional Resources Technology Conference (URTEC)
...), a direct or inverse relationship is observed between permeability and other rock properties. Logarithmic of permeability versus gamma ray...
2018
Tailoring simultaneous inversion for preemptible Kubernetes clusters on the cloud
Malcolm Griffiths, Raafat Abdul Alim, Jaime Ramos-Martinez, N. Chemingui, Bob Clapp
International Meeting for Applied Geoscience and Energy (IMAGE)
... the inversion step utilizes an efficient scale separation of the inversion gradient via inverse scattering theory (Yang et al., 2021). The scale...
2024
Seismic signal considerations for fast reservoir characterization
Folkert Hindriks
International Meeting for Applied Geoscience and Energy (IMAGE)
... of the integrated signal by computing the inverse Fourier transform (Brandt, A. and Brincker, R., 2014). 𝑓 ′ (𝑡) = 1 2...
2024
Delineation of CBM Reservoir Using Sparse Layer Inversion: Tanjung II CBM Field Case Study
Sunarli Ardi, Hanif Widya Nugraha, Shabrina Paramitha, Dian Larasati, Gathuk Widiyanto, Dinda Larasati Rahmani, Alfian Usman
Indonesian Petroleum Association
... to inverse seismic data into reflectivity data. Lithological determination is made by making a cross-plot between Gamma ray (GR) log against density log...
2017
Utilization of Old Cased-Hole Logs for Characterization of the Naturally Fractured Spraberry Formation, Midland Basin, Texas
Ashish K. Banik, David S. Schechter
West Texas Geological Society
... Neutron Logs to Modern Porosity Logs For most old neutron logs, the counts per second or API unit is approximately an inverse linear relationship...
1997
Simultaneous source acquisition, accuracy, and deblending
Ray Abma
International Meeting for Applied Geoscience and Energy (IMAGE)
..., and when the inverse Fourier transform is applied, an estimate of the signal is obtained. This estimate of the signal is used to remove both...
2024
Seismic Data - Are We Realising Its Full Potential?
Phil Williams, Mick Cook
Petroleum Exploration Society of Australia (PESA)
... and horizon• consistent slices are readily generated. The full range of attribute displays plus additional tools to facilitate forward and inverse modelling...
1996
Investigation of the Shale Electrical Resistivity Reversal Commonly Observed at the Wet- to Dry-Gas Transition
Stephen P. Cumella, Alan P. Byrnes, Mark D. Sonnenfeld
Unconventional Resources Technology Conference (URTEC)
... oil to wet gas to dry gas is shown by black arrows. Possible Causes of Shale Resistivity Reversals Changes in resistivity and the inverse...
2018
Compressibility, Porosity, and Permeability of Shales Involving Stress Shock and Loading/Unloading Hysteresis
Faruk Civan
Unconventional Resources Technology Conference (URTEC)
... theory (Lamé, 1852) as pointed out elsewhere by Civan (2018b). The inverse power-law equation, where a and b are empirical constants, yields...
2018
Porosity Prediction Using Multiattribute Transforms and Probabilistic Neural Networks Analysis from Limestone Formation in BSJ Gas Field, Central Sulawesi, Indonesia
Ikawati Basri, Sabrianto Aswad, Suryana, Ikhsan Novryan Priatama
Indonesian Petroleum Association
... on seismic data as input the inverse of which is used to generated acoustic impedance (AI). The process of seismic inversion is controlled by the available...
2018
Integration of Magnetotelluric, Gravity and Seismic Data for Sub-Volcanic Imaging
Jeremy Gohitua MacArthur, Muhammad Fikri Putra, Nuha Malihati, Husnia Nur Annisa
Indonesian Petroleum Association
... was processed by inverse method to get the vertical imaging value with resistivity parameter using 1D Occam method. After that, 2D inversion is done and the depth...
2018
High-Resolution Sequence Stratigraphic Setting of Mississippian Eolianites, Appalachian and Illinois Basins
L. B. Smith, A. Al-Tawtl, J. F. Read
Special Publications of SEPM
... are I to 8 m thick and tens of meters to many kilometers wide They have wedge sets of planar and tangential sharply defined inverse graded laminae...
2001
Old Electrical Log Interpretation [Pre-1958], Chapter 6: The Microlog
Hilchie, D.W.
AAPG Special Volumes
... is run using the lower electrode as the current electrode and the upper electrode as a potential measurement electrode. A 1 inch by 1 inch inverse (1 1...
1979
Hybrid 3D Marine Towed-Streamers and Ocean-Bottom Nodes Survey - Challenges and Solutions for Seismic Data Processing and Imaging
Wai Leng Cheah, Wong Li Ming Joyce, Evonne Hooi Rong Yu, Artem Sazykin, Gavin Menzel-Jones
Indonesian Petroleum Association
... and this component is added to the estimated spectrum. Additionally, an inverse Fourier transform of the selected Fourier component is computed and, finally...
2019
Secondary gas emissions during coal desorption, Marathon Grassim Oskolkoff-1 Well, Cook Inlet Basin, Alaska: implications for resource assessment
Charles E. Barker, Todd Dallegge
CSPG Bulletin
... standard. Gas chromatographic analyses of gas samples over time show an inverse relation between the volume of O2 and the volumes of CO2 and CH4 (Fig. 8...
2006
Reservoir Characterization using Acoustic Impedance Seismic Inversion Method and Seismic Attribute in the "RST" Field of the Taranaki Basin, New Zealand.
Harista BR Ginting, Muh. Firmansyah, Muh Resky Ariansyah, Sabrianto Aswad, Davis Reza Siregar
Indonesian Petroleum Association
... annealing and colored inversion method are inverse modeling techniques with the result of an acoustic crosssection. The colored inversion method...
2019
Relationships Between Porosity, Median Size, and Sorting Coefficients of Synthetic Sands
John J. W. Rogers, William B. Head
Journal of Sedimentary Research (SEPM)
..., and porosities show an inverse linear relationship to sorting coefficient except in very well sorted samples in which porosity increases more rapidly than...
1961
Impact of Natural Fracture Induced Elastic Anisotropy on Completion and Fracturing Design in Different Shale Reservoirs
Emre Can Dundar, Aymen Alhemdi, Ming Gu
Unconventional Resources Technology Conference (URTEC)
... are created for different shale formations. The OB stiffness tensors are then used to derive the acoustic logs based on inverse calculation. The derived...
2019