Petrophysical Approach to Origin of Porosity of Carbonate Rocks in Middle Carboniferous Windsor Group, Nova Scotia, Canada

Koichi Aoyagi

AAPG Bulletin

... as the ratio of pore spaces to the bulk volume of the rock: EQUATION (1) EQUATION (2) where ^phgra is absolute porosity, Vp is total volume of pore...

An Analysis of the Roles of Stress, Temperature, and pH in Chemical Compaction of Sandstones

Heather A. Sheldon, John Wheeler, Richard H. Worden, Michael J. Cheadle

Journal of Sedimentary Research (SEPM)

.... An alternative model of chemical compaction invokes the effect of sheet silicates on pH to account for localized dissolution of grains adjacent to stylolites...

Simulation Model for Petroleum Exploration

Kazuo Nakayama , Dewitt C. Van Siclen

AAPG Bulletin

... for the particular depth according to its grain size (Fig. 2). EQUATION (1) where POR = porosity; DM = grain diameter in phi-scale; n = power factor...

Application of Physics Informed Neural Networks to Compositional Modelling

Thelma Anizia Ihunde, Olufemi Olorode

Unconventional Resources Technology Conference (URTEC)

..., as in equation [17]. To evaluate the significance of MSE2 and MSE3 without one masking the effect of the other, we only run them in isolation in this work...

Evaluating the Performance of Decline Curve Analysis Equations During the Early Life of a Well Through the Quantification of the Uncertainty Associated with the Estimated Ultimate Recovery in a Shale Oil and Gas Formation

Agustín Terminiello, Pablo Crespo, Matías Nasca

Unconventional Resources Technology Conference (URTEC)

... Preparation: Matching and Calculation Procedure During the research to understand the effect of production history on forecasts and reserves...

Kronecker neural networks for the win: Overcoming spectral bias for PINN-based wavefield computation

Umair bin Waheed

International Meeting for Applied Geoscience and Energy (IMAGE)

... inversion (FWI). One of the popular approaches is to solve for the wavefields in the frequency domain by using the Helmholtz equation. However, Helmholtz...

Subsidence Analysis: Chapter 3

Charles L. Angevine, Paul L. Heller, Chris Paola

AAPG Special Volumes

... small-scale sea-level changes will only have a minor effect. B. DISPLAYING THE DATA It is convenient, although not necessary, to display all the data...

A. Factors Affecting Spontaneous Potential and Resistivity

New Orleans Geological Society

... emits rado Frequency energy from a transmitter coil on the tool. This RF energy sets up eddy currents in the formation which flow in a circle around...

Time-Dependent Hydrodynamic Models of Turbidity Currents Analyzed with Data from the Grand Banks and Orleansville Events

A. D. Kirwan Jr., L. J. Doyle, W. D. Bowles, G. R. Brooks

Journal of Sedimentary Research (SEPM)

... by Daly (1936), most geologists have focused on the dynamics of phase II. The theoretical model typically employed is some form of the Chezy equation...

Modifications for Fracture Damage and Changing Pressure Drawdown to Improve Accuracy of Duong Decline Model

Himanshu S. Jha, W. John Lee

Unconventional Resources Technology Conference (URTEC)

... from the original and modified Duong methods to highlight the effect of fracture skin and varying pressure drawdown on the production forecast results...

Paleoflow Characteristics of a Late Cretaceous River in Utah from Analysis of Sedimentary Structures in the Ferron Sandstone

Edward Cotter

Journal of Sedimentary Research (SEPM)

... derived for the slope and velocity are supported by other indirect met ods based on the Manning equation. It appears likely that the Late Cretaceous Ferron...

Brackish Groundwater Resources of the Northern Trinity Aquifer, Texas

Mark C. Robinson, Daniel M. Lupton

GCAGS Transactions

... characteristics: Transactions of the American Institute of Mining, Metallurgical, and Petroleum Engineers, v. 146, p. 54–62. Arps, J. J., 1953, The effect...

The Development Decision: Frontier Areas

Joseph E. Warren

Indonesian Petroleum Association

... – and, some heuristic simplications are indicated. The examples are structured to show the significant effect of the tax regime on the development...

The "Sorting Out" of Geological Variables Illustrated by Regression Analysis of Factors Controlling Beach Firmness

W. C. Krumbein

Journal of Sedimentary Research (SEPM)

... size is more important in modifying the effect of moisture content. In addition, it may End_Page 575------------------------ be inferred...

The Comparative Reliability of Magnetic, Photometric and Microscopic Methods of Determining the Orientations of Sedimentary Grains

Asahiko Taira, Barry R. Lienert

Journal of Sedimentary Research (SEPM)

...-axes to individual grain elongation directions has little effect on the validity of the method. For the magnetic susceptibility anisotropy method, we...

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

... (Lee and Lumley, 2020). Second, an empirical approach has been used widely with a density change (Schmoker, 1979) based on the effect of low-density...

Applications of the Electromagnetic Propagation Tool in Indonesia

B. R. Wood, P. Westaway

Indonesian Petroleum Association

.... Several mechanisms contribute to this dipole moment. At the EPT frequency the dominant effect is the dipolar contribution due to the presence of permanent...

An Estimate of the Conventional Crude-Oil Potential in Alberta

J. T. Ryan

CSPG Bulletin

... RESERVES The equation used to describe the growth of reserves in any major play is given below:      (1) In this equation, Wip refers to the number...

Abstract: Color Correction for Gabor Deconvolution and Nonstationary Phase Rotation; #90171 (2013)

Peng Cheng and Gary F. Margrave

Search and Discovery.com

... ) f 2 , (6) For the calculation of coefficient curves ai (τ ) ( i = 1,2,3 ), when the log is temporally shorter than the data, we first use equation...

Abstract: Color Correction for Gabor Deconvolution and Nonstationary Phase Rotation; #90171 (2013)

Peng Cheng and Gary F. Margrave

Search and Discovery.com

... ) f 2 , (6) For the calculation of coefficient curves ai (τ ) ( i = 1,2,3 ), when the log is temporally shorter than the data, we first use equation...

Estimation of Arithmetic Permeability from a Semi-Log Porosity/Log10 Permeability Regression; #41583 (2015)

Gregory Benson

Search and Discovery.com

... defined as a function of the standard deviation of the porosity-permeability point cloud residual around the geometric regression (Figure 7). The equation...

De-risking Wellbore Dynamics Challenges for Operational Feasibility of Dual Packer

Abhimanyu Singh, Arvind Kumar, Velerian Sanjao Lopes, Tety Benedicta Wydiabhakti, Dario Solohaga, Priyank Srivastava

Unconventional Resources Technology Conference (URTEC)

... in wellbore dynamics. The sensitivity analysis will show the effect on frequency of equalization during sampling or pumping. These sensitivities...

3-D Seismic Recognition of the Jurassic Smackover Reservoir of Grayson Field Using Leading-Edge Reservoir Characterization Seismic Processing

Kevin B. Hill

GCAGS Transactions

... pay interval was overcome by making deep induction and gas effect "seismic" volumes that could be used in conjunction with the relative amplitude...

Abstract: Dielectric Permittivity of Clay Adsorbed Water: Effect of Salinity; #90172 (2014)

Sanaa Aqil, Douglas R. Schmitt

Search and Discovery.com

...Abstract: Dielectric Permittivity of Clay Adsorbed Water: Effect of Salinity; #90172 (2014) Sanaa Aqil, Douglas R. Schmitt AAPG Search and Discovery...

Size Frequency Distributions of Sediments and the Normal Phi Curve

W. C. Krumbein

Journal of Sedimentary Research (SEPM)

..., it is: [EQUATION (1)] where Mx is the arithmetic mean of the x-values, and x is their standard deviation. This curve is bell-shaped and symmetrical...