Mantle Origin of Global Sea-Level Fluctuations and Geomagnetic Reversals: Evidence from Non-Linear Dynamics

J. F. Collins, J. Bon

Indonesian Petroleum Association

... because of the ability of computers to numerically solve the nonlinear equations of motion involved, and because of the ability of these models to account...

An Application of the Truncated Pluri-gaussian Method for Modeling Geology

A. Galli, G. Le Loch, F. Geffroy, R. Eschard

AAPG Special Volumes

... left). The red square highlights the way the lithotype rule is used.Furthermore, Gaussian random functions that are correlated could be used...

Hydrodynamics of Fluid Injection

P. A. Witherspoon , S. P. Neuman

AAPG Special Volumes

... in a preceding section can be used to solve this problem. We noted on Figures 4 and 5 that, at an early time [i.e., tD < 1.6 ß112/(r/B11)4], Aquifer 2 has...

AVO and Inversion Contribute to Makassar Exploration Efforts

William L. Soroka, Herry Andiarbowo, Anung Widodo

Indonesian Petroleum Association

... = STRUC-A + (STRUC-B/SOLID + FLUID - STRUC-C) Bulk modulus is used to compute P-wave velocity (Vp) as shown in the following equation: Vp2 = ( K + ( 4μ...

Impact Of Anisotropy Induced By Shale Lamination And Natural Fractures On Drilling, Completion, and Fracturing Design

Ming Gu

Unconventional Resources Technology Conference (URTEC)

...), DTSfast (fast shear wave slowness), and DTST can only provide four independent constraints, which can be used to solve for the four independent stiffness...

Application of Transport Equations to Groundwater Systems

John D. Bredehoeft , George F. Pinder

AAPG Special Volumes

... techniques, it has been possible to solve the equations describing changes in concentration, in space and time, for rather general field situations...

A Multidisciplinary Approach to Inversion Feasibility Analysis for an Unconventional Reservoir Characterization

Venkatesh Anantharamu, Lev Vernik, Yoryenys Del Moro, Alfonso Quaglia, Eduardo Carrillo

Unconventional Resources Technology Conference (URTEC)

... are available. However, for unconventional mudrocks, due to the presence of kerogen which affects the S-wave velocity, the same equations and models...

Abstract: Empirical Mode Decomposition Based Instantaneous Spectral Analysis and its Applications to Heterogeneous Petrophysical Model Construction; #90171 (2013)

Jun-Wei Huang and Bernd Milkereit

Search and Discovery.com

... of HHT-EMD is that it does not require presumed a set of functions as previous methods and allows projection of a non-stationary and non-linear signal...

Application of Physics Informed Neural Networks to Compositional Modelling

Thelma Anizia Ihunde, Olufemi Olorode

Unconventional Resources Technology Conference (URTEC)

...-equilibrium equations involves using the successive substitution and/or the Newton-Raphson algorithms to satisfy the equality of fugacity (used...

Viable Solutions to Overcome Weaknesses of Deep Learning Applications in Production Forecasting: A Comprehensive Review

Y. Kocoglu, S. Gorell

Unconventional Resources Technology Conference (URTEC)

... earlier. In RNN, hidden states are used both as an input and as an output. In the forward pass equations, the hidden state ‘ht-1’ is an input whereas...

Abstracts: Plane Wave Reflection and Transmission Coefficients for VTI Media; #90173 (2015)

Ritesh Kumar Sharma and Robert James Ferguson

Search and Discovery.com

... (Tsvankin, 2001). For VTI media the wave equation separates into a coupled pair of the equations for the P-SV waves and into a single equation for the pure...

Thermal Mass Transfer in Systems Containing Quartz and Calcite

James R. Wood

Special Publications of SEPM

...’+] The Mathematical Model Equation (32) shows that specifying PCo2 fixes [H2CO:] arid makes [HCO,] and [COT] functions of [H+] only, so that equations (32...

Function-Based Training Image Construction of Fluvial Point Bars: A Modern Analog Example from the Brazos River, Texas; #41560 (2015)

Gregory Benson, Ravi Shekhar

Search and Discovery.com

...” framework where each TI layer represents a single time slice. To populate the TI, we used mathematical functions to describe a fining upward character...

Seismic Velocity Variations in San Joaquin Valley, California

Walter S. Olson

AAPG Bulletin

...] This applies to the azimuth of N. 5° E. We can solve the equations for various reflection times and tabulate them. Table To get corrections for any other...

A High Density Seismic Hazard Survey in the Los Angeles Basin

Search and Discovery.com

Four Storm-event Beds and the Tropical Cyclones that Produced them: A Numerical Hindcast

Timothy R. Keen , Rudy L. Slingerland

Journal of Sedimentary Research (SEPM)

... Sedimentation System used in this study is a combination of several FORTRAN programs which solve the finite difference equations for physical processes operating...

Cross-Well Seismology: A New Production Tool

B. N. P. Paulsson, R. T. Langan

Indonesian Petroleum Association

...- and S-wave) can be used to determine the location of steam in an enhanced oil recovery project and the continuity of sand and shale layers between...

A Methodology for Selecting Optimal Pipe Rocking Regimes during Slide Drilling

Ian Rostagno, Michael Yi, Pradeepkumar Ashok, Eric van Oort, Ben Potash, Chris Mullin

Unconventional Resources Technology Conference (URTEC)

... conditions of dynamic friction, without losing toolface control. The torsional damped wave equation was used as a drillstring dynamics model because...

The use of FWI in coal exploration

Mehdi Asgharzadeh, Maryam Bahri, Milovan Urosevic

Petroleum Exploration Society of Australia (PESA)

... acquired over coal seams in Bowen and Sydney basins. FWI can be used for a high resolution estimate of P- and S-wave velocities and the density that can...

A Combined Discontinuous Galerkin / Cohesive Zone Model Numerical Simulator for Hydraulic Fracturing and Application to Frac Hits Mitigation

Santiago Serebrinsky, Mauro Baldini, Federico Castez, Humberto Celleri, Isaías Gallana, Julieta Gutiérrez, Damián Smilovich

Unconventional Resources Technology Conference (URTEC)

...lem, 2) a dynamic relaxation approach to solve the solid equilibrium equations, 3) a combined Discontinuous Galerkin/cohesive zone model to incorporate fr...

Simple Models for the Stress-Dependence of Anisotropic Seismic Velocities in Fractured Rock; #120053 (2012)

Richard L. Gibson, Jr. and Kai Gao

Search and Discovery.com

... model equations derived using the compliance approach predict a value for one elastic modulus that implies that the corresponding shear wave velocity...

What Happens When Quantum Computing Re-Defines the Assessment of Investment Risk?

Mark Laybourn, John Pascoe

Australian Petroleum Production & Exploration Association (APPEA) Journal

... recently able to solve a highly specialised computing problem with a quantum computer 100 million times faster than a classical computer. The power to signi...

Leveraging Unsupervised Machine Learning on Seismic Images of Miocene Deposits in the Carpathian Foredeep Basin for Facies Classification

Reva Wiratama, Fikrah Elhifzi Harahap, Imoleayo Fashagba, Kamil Cichostępski

Indonesian Petroleum Association

... probability density functions, which are good at mapping multimodal with Gaussian distribution in each model (Hardisty, 2017). The input data used...

The Evolution of FWI and its Perceived Benefits

Tony Martin, Andrew Long

Australian Petroleum Production & Exploration Association (APPEA) Journal

... Introduction The primary source of uncertainty in the understanding of field potential is the accuracy of the models used to image seismic data. Building...

Thermal Subsidence and Compaction in Sedimentary Basins: Application to Baltimore Canyon Trough

C. L. Angevine, D. L. Turcotte

AAPG Bulletin

... is also used to determine the thermal evolution and petroleum potential of sedimentary basins. Experience with similarity solutions in many branches...