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The AAPG/Datapages Combined Publications Database

Showing 355 Results. Searched 189,018 documents.

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Physical Properties of Carbonate Reservoirs in South Sumatra

B. Sudewo, A. R. Suhendan, S. Chacko

Indonesian Petroleum Association

... resistivity. These parameters were investigated for their relationship with porosity. Established modeling equations like the Time-Average Equation...

1987

Characteristics of Velocity-Porosity Relationships in the Baturaja Limestone Reservoir: A Case Study in the South Sumatra Basin

Muhamad Noor Ali

Indonesian Petroleum Association

... for their relationship with porosity derived from Neutron-Density cross-plots from wireline logging. Established modeling equations like the Time Average Equation, Raymer...

2002

A Review of Petrophysics of Cooper Basin Reservoirs in South Australia

Chris Porter

Petroleum Exploration Society of Australia (PESA)

... himself is at variance with the conclusions drawn. Wyllie's equation Wyllie's 'Time Average Equation' app• lies for a model consisting of a layered...

1990

SONIC LOG APPLICATIONS - EASTERN VENEZUELA

W. F. Clarke

Asociación Venezolana de Geología, Minería y Petróleo (AVGMP)

... relationship and arrive at a time-average equation which gives satisfactory results at the lower porosities. (Equation 1) The time-average equation by-passes...

1961

Quick Look Techniques

Richard H. Merkel

AAPG Special Volumes

... quick looks have been very effective in the Gulf Coast area. Resistivity and travel time average values should be noted and recorded for each zone...

1979

Impossibility of Bernoulli Pressure Forces on Particles Suspended in Boundary Layers: DISCUSSION

John B. Southard

Journal of Sedimentary Research (SEPM)

... the instantaneous velocity and the mean velocity in the y direction and the bar denotes a time average), to the equation of motion in the y direction...

1970

Standard Interpretation: Part 4. Wireline Methods

Mark Alberty

AAPG Special Volumes

... equal to 0.9 for oil and 0.7 for gas. The Wyllie time average equation is [EQUATION] The Raymer-Hunt-Gardner equation is an empirical approach...

1992

The Impact of Pore Geometry and Microporosity on Velocity-Porosity Relationship in Carbonates of Central Luconia, Sarawak; #41030 (2012)

Nor Sara Izzatti Bashah and Bernard Pierson

Search and Discovery.com

... scattering along the Wyllie’s time average equation. The large scattering in most cases will result in large uncertainties in seismic inversion...

2012

Unconventional Carbonate Reservoir Characterization Using Sonic Velocity and Characterization of Pore Architecture: An Example From the Mid-Continent Mississippian Limestone; #50979 (2014)

Beth Vanden Berg, G. Michael Grammer, Gregor Eberli, Ralf Weger

Search and Discovery.com

... to Pore Type 7000 6000 4000 Time Average Equation for Dolomite 3000 Time Average Equation for Calcite microporosity interpart./crystalline por...

2014

Basic Log Analysis Resolved a Heterogeneous and Complex Carbonate Pore Type Problem

Al Hafeez, Ananto Wibisono, Rochmad, Dadi Lestiyardi

Indonesian Petroleum Association

... at the validity of sonic measured and the Wylie’s time average equation as stated by Anselmetti-Eberli. Unlike another clastic reservoir, carbonates are unique...

2017

Geological Factors Influencing Porosity Estimates From Velocity Logs

Roberto Sarmiento

AAPG Bulletin

... the variables mentioned. The resulting equations give more accurate porosity estimates than the time-average equation, which is in widespread use...

1961

Fractional Isostatic Mantle Compensation of Carbonate Buildups: GEOLOGIC NOTE

I. Lerche , M. A. Perlmutter

AAPG Bulletin

... depth, so that EQUATION (4b) At the present time, the average depth of the photic zone for carbonate or reef growth is around 70 m, with a maximum...

1993

Difficult Lithologies: Part 4. Wireline Methods

Khaled Hashmy, Mark Alberty

AAPG Special Volumes

... formations. Density-Sonic Crossplot Two versions of the density-sonic crossplot also exist, one using the Wyllie time average equation and the other...

1992

Basin-Filling Models: Chapter 9

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

AAPG Special Volumes

...) equation for sediment: [EQUATION (9.1)] where is the elevation of the sediment surface above a fixed datum, the subsidence rate, t time, C0...

1990

Aspects of Rock Physics From Laboratory and Log Data that are Important to Seismic Interpretation: Section 1. Fundamentals of Stratigraphic Interpretation of Seismic Data

A. R. Gregory

AAPG Special Volumes

.... The time-average equation (1) empirically relates velocity and rock parameters for a fairly wide range of porosities: [EQUATION (1)] where...

1977

ABSTRACT: Elastic Wave Velocity Model Analyses for Gas-Hydrate Bearing Sediments; #90061 (2006)

Dong Wang and Xiuming Wang

Search and Discovery.com

... obtained using the time-average equation, the Gassmann model, the Biot-Gassmann model, and the LCA model are compared. AAPG Search and Discovery #90061...

2006

ABSTRACT High-Velocity Carbonates with High Permeability: Implications for Reservoir Quality in High Acoustic Impedance Intervals, #90104 (2010)

Eberli Gregor P.; Verwer Klaas

Search and Discovery.com

.../s from the Wyllie time‐ average equation. The two sample sets differ, however, in regards to permeability. The moldic group has low permeability while...

2010

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