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The AAPG/Datapages Combined Publications Database
Showing 20,604 Results. Searched 200,357 documents.
In Situ Evaluation of Potential Source Rocks by Wireline Logs: Chapter 13: GEOCHEMICAL METHODS AND EXPLORATION
Susan L. Herron
AAPG Special Volumes
... include density, sonic, gamma ray, and resistivity. The limitations inherent in the interpretation are primarily due to the fact that several...
1991
Anisotropy Kinematics Clarified through Regime Rrays Model
William J. Vetter
Search and Discovery.com
... ) in Green’s equation; (3) Fermat’s principle (FP), adapted for seismic propagation as pointwise Snell’s law conforming ray loci, including direction...
Unknown
Anisotropy Kinematics Clarified through Regime Rrays Model
William J. Vetter
Search and Discovery.com
... ) in Green’s equation; (3) Fermat’s principle (FP), adapted for seismic propagation as pointwise Snell’s law conforming ray loci, including direction...
Unknown
The Crude Oils of Wyoming—Product of Depositional Environment and Alteration
Richard D. McIver
Wyoming Geological Association
... in Crude Oils by X-ray Fluorescence: Advances in X-ray Analysis, v. 3, (Proceedings of the 8th Annual Conference on Application of X-ray Analysis, Denver...
1962
Quantification of Total Organic Carbon Content in Shale Source Rocks: An Eagle Ford Case Study
Adel A. Alqahtani, Azra N. Tutuncu
Unconventional Resources Technology Conference (URTEC)
... have been developed to quantify TOC from logs. They are based on measurements of gamma ray, resistivity, density, sonic, neutron, as well as nuclear...
2014
Comparison of gas, Klinkenberg, and liquid permeability of sandstone: Flow regime and pore size
Tobias Orlander, Harald Milsch, and Ida Lykke Fabricius
AAPG Bulletin
... by using Kozeny’s equation and surface relaxation times from nuclear magnetic resonance data shows that the largest pores have no positive effect...
2021
Abstract: Subsalt Seismic Modeling and Illumination Analysis in Red Sea Transition Zone; #90254 (2016)
Ewenet Gashawbeza, Hongwei Liu, Saleh AL-Saleh
Search and Discovery.com
... velocity field, acquisition geometry, and a high fidelity algorithm. In this study, two modeling techniques were used: (1) ray-based that is fast...
2016
Near-surface modeling by surface wave tomography inversion in oil and gas exploration
Wen Peng, Le Li, Zhonglin Cao, Guangying Wang, Pengfei Duan, Heng Zhang
International Meeting for Applied Geoscience and Energy (IMAGE)
... the ray path and travel time of the single frequency surface wave component, a tomographic inversion equation can be established to obtain a nearsurface...
2024
Traveltime tomography and efficient physics-informed Bayesian inversion
Tian Qiao, George Turkiyah, Gerard T. Schuster
International Meeting for Applied Geoscience and Energy (IMAGE)
... by the 1D traveltime modeling equation listed under Figure 1a, where we assume an Nlayered medium with each layer having a thickness of ∆z, no ray...
2022
Porosity Logs: Chapter IV
George B. Asquith, Charles R. Gibson
AAPG Special Volumes
... with the t curve (Fig. 26). Track #1 normally contains a caliper log and a gamma ray log or an SP log (Fig. 26). The interval transit time (t) is dependent...
1982
High-resolution imaging using Gaussian beam point-spread-function deconvolution
Jidong Yang, Jianping Huang, Hejun Zhu, George McMechan
International Meeting for Applied Geoscience and Energy (IMAGE)
..., seismic imaging methods have evolved from ray-based Kirchhoff migration (Wiggins, 1984; Keho and Beydoun, 1988), through one-way wave equation migration...
2023
An Interpreter's Guide to Improvements in Depth Imaging Through Model-Based Velocity Estimation and Refinement
Andy Furniss
Indonesian Petroleum Association
... incorrect results as ray bending still occurs due to velocity variations within layers and at layer boundaries. The Dix equation itself is based on several...
2000
Identification of Source Rocks on Wireline Logs by Density/Resistivity and Sonic Transit Time/Resistivity Crossplots
B. L. Meyer , M. H. Nederlof
AAPG Bulletin
.... 1504-1509. Schmoker, J. W., 1981, Determination of organic-matter content of Appalachian Devonian shales from gamma-ray logs: AAPG Bulletin, v. 65...
1984
Quantitative Evaluation of Hydrocarbon Saturation in Shaly Freshwater Reservoirs
Paul F. Worthington, Paul W. Johnson
Indonesian Petroleum Association
... and practical applications of natural gamma ray spectroscopy." Trans. SPWLA 21st Ann. Logging Symp., Q1-30. Simandoux, P. 1963. "Dielectric measurements...
1987
Improving total organic carbon estimation for unconventional shale reservoirs using Shapley value regression and deep machine learning methods
Jaewook Lee, David E. Lumley, and Un Young Lim
AAPG Bulletin
... Schmoker’s method. Second, we also compute the clay volume fraction (VClay) from a normalized gamma-ray log (equation 11). The two assumptions...
2022
The Limitations of Seismic Modelling of Geological Structures
B. L. N. Kennett
Petroleum Exploration Society of Australia (PESA)
... variations in structure. The main features of the reflected field are usually found by using ray methods. These form the basis of the usual 'exploding...
1985
Flow Simulation of Complex Fracture Systems With Unstructured Grids Using the Fast Marching Method
Changdong Yang, Xu Xue, Michael J. King, Akhil Datta-Gupta
Unconventional Resources Technology Conference (URTEC)
... the drainage volume during the transient pressure propagation process using the Fast Marching Method (FMM) and then rapidly solves fluid flow equation...
2017
Induced Gamma Ray Spectroscopy (IGS) Log Application in the Java Sea
Cholid Mas, Anna Maria, Mark Schneider, Bambang Hari Setiyawan
Indonesian Petroleum Association
...Induced Gamma Ray Spectroscopy (IGS) Log Application in the Java Sea Cholid Mas, Anna Maria, Mark Schneider, Bambang Hari Setiyawan 1996 151 163...
1996
Determine Reservoir Properties of R1 Reservoir Based on Log Interpretation and Core Analysis in X Field of South Sumatra Basin
Sri Rizky, Ordas Dewanto, Bagus Sapto Mulyatno, Beny Chasandra
Indonesian Petroleum Association
... combined well logging and core data. Data from six composite well logs comprising of gamma ray, resistivity, neutron and density logs were used...
2017
Abstract: AVAZ Inversion for Fracture Orientation and Intensity: a Physical Modeling Study; #90187 (2014)
Faranak Mahmoudian and Gary F. Margrave
Search and Discovery.com
... equation 26. For a given offset and depth of the fractured layer, the primary ray-path is traced to determine the incident angle, using a PP raytracing...
2014
New perturbation-based traveltime approximation for elastic VTI media
Shibo Xu, Alexey Stovas, Xingguo Huang
International Meeting for Applied Geoscience and Energy (IMAGE)
... axis (VTI). The perturbation coefficients in this approximation are derived directly from the implicit parametric offset-traveltime equation...
2022
Fracture-Porosity Identification from Anisotropy AVO and Fluid Substitution Modelling in Seismic 2D Data
Septian Prahastudhi, Tenny Octaviani, Ayi Syaeful Bahri, Yulia Putri Wulandari
Indonesian Petroleum Association
... properties of crack (D) and anisotropy gradient (Gan). The crack properties can be computed after fluid replacement modeling using Gassmann Equation to find...
2012
High-fidelity full-waveform imaging via impedance inversion
Feng Chen, Yu Zhang, Lian Duan, Weishan Han, Yilong Qin, Qianggong Song
International Meeting for Applied Geoscience and Energy (IMAGE)
... from the acoustic wave equation with velocity density : 1 − ∇ ⋅∇ ( ; ; )= ( − ) ( ) , and (1) ( ; ; )= ( ; ; ) where ( ) denotes source...
2023
Extended Abstract: Role And Contribution Of Pressure Regime Evaluation In Well Planning And Formation Evaluation Process, Zeit Bay Field - Gulf Of Suez, Egypt , #90099 (2009)
Saber Moustafa Selim, Khaled Mohamed Abdallah, Bassem El-Sayed El-Badawy
Search and Discovery.com
...) so, the Clay sections had been adequately identified. This identification had been done by the assistance of CGR (Gamma Ray corrected for uranium...
2009
The Wave Equation Applied to Migration
D. Loewenthal, L. Lu, R. Roberson, J. Sherwood
Southeast Asia Petroleum Exploration Society (SEAPEX)
...The Wave Equation Applied to Migration D. Loewenthal, L. Lu, R. Roberson, J. Sherwood 1978 72 80 Claerbout’s method has been implemented...
1978