A Practical Model for Organic Richness from Porosity and Resistivity Logs

Q. R. PASSEY , S. CREANEY , J. B. KULLA , F. J. MORETTI , and J. D. STROUD

AAPG Bulletin

...-known Wyllie time-average equation: f = (delta t--delta tm)/(delta tf--delta tm) (Equation A-3; SEE PAGE IMAGE) where delta t is the measured sonic...

Xu and White Revisited (Paper C8)

M. Sams, T. J. Focht, N. Azuairi Che Sidik

Geological Society of Malaysia (GSM)

... has proved effective and thus popular. The workflow mixes the elastic properties of quartz and clay using the time average equation. The total pore...

Degree of Advancement of Petroleum Exploration in United States

M. King Hubbert

AAPG Special Volumes

... an element of time t, the quantity Qp of oil produced is given by [EQUATION (1)] and is represented graphically by the area of base t and height dQp/dt...

Abstracts: Automatic P-wave Arrival Time Picking Method for Seismic and Microseismic Data; #90173 (2015)

Jubran Akram

Search and Discovery.com

... a multi window algorithm for detecting first arrivals. The other techniques of short time average and long time average ratio (STA/LTA) and modified...

Abstracts: Akaike Information Criterion Applied to Detecting First Arrival Times on Microseismic Data; #90173 (2015)

Andy St-Onge

Search and Discovery.com

... in November 2009 was used to test the algorithm. Equation 2 was used to calculate the AIC array values shown on Figure 2. The time series initiates...

Problems Frequently Encountered in Evaluating Tar Sand Resources--The South Texas San Miguel Deposit: Section V. Exploration Histories

M. W. Britton

AAPG Special Volumes

... a path parallel to the borehole. Porosity is then calculated from the Wyllie time-average equation: [EQUATION (9)] where: t = reading on the sonic...

Degree of Advancement of Petroleum Exploration in United States

M. King Hubbert

AAPG Bulletin

... of oil produced is given by EQUATION (1) and is represented graphically by the area of base ^Dgrt and height dQp/dt, between the curve and the time...

Using Carbonate Mudrock Pore Architecture to Provide Insight into Porosity and Permeability Trends in Unconventional Carbonate Reservoirs: Examples from the Mid-Continent Mississippian Limestone, #51095 (2015).

Beth Vanden Berg, G. Michael Grammer

Search and Discovery.com

... samples "- 5000 m/s "- rP • • o • .... • • .... .... •• 2000 1000 "- 43% "- .... () 3000 o ~ "- • • • • - - - Time-average equation...

Quantification of pore structure and its effect on sonic velocity and permeability in carbonates

Ralf J. Weger, Gregor P. Eberli, Gregor T. Baechle, Jose L. Massaferro, Yue-Feng Sun

AAPG Bulletin

..., The image processing handbook: Boca Raton, Florida, CRC Press, 771 p.Saleh, A. A., and J. P. Castagna, 2004, Revisiting the Wyllie time average equation...

Shear Velocity Prediction and its Rock Mechanic Implications, #41296 (2014)

Yexin Liu, Zhuoheng Chen, Kezhen Hu

Search and Discovery.com

... is usually not affected by the gas-saturation. Therefore, for the transit time of S-wave logs, the response equation is: (6) Where Δts is S-wave transit...

First-Arrival Traveltime Inversion in the CMP Domain: Method and Application

Search and Discovery.com

... and intercept time are the average of the slowness and intercept time of the upward source and upward receiver rays at the surface. This midpoint...

Carbonate Reservoir Characterization Using the Cementation Factor: A Case Study of Little Cedar Creek Field, Onshore Alabama

Qifei Huang, Yuefeng Sun

GCAGS Journal

... and permeability. The deviation of velocity is made by comparing the sonic log velocity with the velocity calculated using the time-average equation of Wyllie...

Correlation of Acoustic Velocity, Stress, Rock Composition, Organic Matter and Rock Lamination in Organic-Rich Shales

Adel A. Alqahtani, Azra N. Tutuncu

Unconventional Resources Technology Conference (URTEC)

...) to porosity is the Wyllie time-average equation (Wylie et al. 1956). t  t f  (1   )tma (1) 1 1    (2) V Vma V f where  t is sonic...

Mixing at Turbidity Current Heads, and Its Geological Implications

J. R. L. Allen

Journal of Sedimentary Research (SEPM)

... is the full height of the head. We should here note that vmax is an average with respect to space and time. It will be seen from Equation (1) that vmax...

Bed Configurations

Gerard Middleton, John B. Southard

Special Publications of SEPM

... this with a preestablished Since water-surface slope fluctuates horizontal reference plane. with time around some average because of the slightly varying resistance...

A√k Method with Dynamic Hydraulic Fracture Conductivity under Closure Stress

Ivan C. Aldana Gallego, I. Yucel Akkutlu

Unconventional Resources Technology Conference (URTEC)

.... For the computation of rate normalized modified pseudo-pressure vs square root of modified pseudo-time, average permeability � for the stimulated...

Chapter 8: Petrophysical Characteristics of the Ivie Creek Case-Study Area - Geological and Petrophysical Characterization of the Ferron Sandstone for 3-D Simulation of a Fluvial-Deltaic Reservoir (MP-02-6)

R.D. Jarrard, M.A. Chan, C.B. Forster, S.H. Snelgrove

Utah Geological Survey

... the range 8-21 appropriate for the time-average equation, pores are filled with water (we have avoided gas-bearing sands), and microcracks are present...

Tectonic and Petrophysical Investigation of Williston Basin Strata around the Weyburn CO2 Sequestration Reservoir

Sandor Sule, Zoltan Hajnal, and Bhaskar Pandit

Saskatchewan Geological Society

... to develop a 3D volumetric model for the Lower Watrous reservoir seal. Figure 12 shows the subdivision of this unit derived from the time average (Wyllie...

Future Growth of Known Oil and Gas Fields

David H. Root , Richard F. Mast

AAPG Bulletin

..., estimated in year e. We say the age of the fields at the time of estimate is e - d + 1. The growth factor from age a to age a + 1 is given by, EQUATION...

Experimental Measurement of the Relative Importance of Controls on Shoreline Migration

Wonsuck Kim, Chris Paola, Vaughan R. Voller, John B. Swenson

Journal of Sedimentary Research (SEPM)

... because it gives the least error of any single variable. The condition for Level 0 can be written as where the overbar denotes a time average...

Chapter 10: Integrated Reservoir Characterization to Provide Insight into Porosity and Permeability in a Mixed Carbonate–Siliciclastic Reservoir

Beth Vanden Berg, Stephanie LeBlanc, G. Michael Grammer

AAPG Special Volumes

... and Eberli 1999, Eberli et al. 2001). The Wyllie time average equation is an adequate approximation for this relationship for samples that have...

An Integrated Approach to Characterization and Modeling of Carbonate Reservoirs; #50784 (2013)

G. Michael Grammer

Search and Discovery.com

... Seismic 5000 m/s 5000 4000 43% 12% 3000 2400 m/s 2000 1000 0 Time-average equation Woods equation (for suspension) Theoretical maximum 10 20 30...

Prediction of Petrophysical Properties of Trenton-Black River (Ordovician) Reservoirs by Comparing Pore Architecture and Permeability to Sonic Velocity; #50508 (2011)

John E. Thornton and G. Michael Grammer

Search and Discovery.com

...-average equation Woods equation (for suspens ion) Theoretical maximum 10 20 30 40 50 60 Porosity (%) Anselmetti and Eberli (1999) 37 Core Plugs...

Anisotropy Kinematics Clarified through Regime Rrays Model

William J. Vetter

Search and Discovery.com

...-paths velocity detail, they quantify “proper rays” pathlengths and apparent- (so-called ray-), time-average-, path-mean-, and RMS- velocities. All...

Anisotropy Kinematics Clarified through Regime Rrays Model

William J. Vetter

Search and Discovery.com

...-paths velocity detail, they quantify “proper rays” pathlengths and apparent- (so-called ray-), time-average-, path-mean-, and RMS- velocities. All...