Abstract: On Utilizing Functional Networks Computational Intelligence in Forecasting Rock Mechanical Parameters for Hydrocarbon Reservoirs: Methodology and Comparative Studies, by Emad A. El-Sebakhy, Ognian Asparouhov, Abdulazeez Abdulraheem, Abdul-Aziz Al-Majed, Donghui Wu, and Kris Latinski; #90105 (2010)

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Working Under Pressure

Paul Wood

GEO ExPro Magazine

... this time at Durham he had a lot of contact with the oil and gas business and realised that, especially in the North Sea, variable and high pressure...

Use of Seismic Surveying for Study of the Subsurface Structure of Southeast Turkmenistan

D. M. Mil’shteyn

Petroleum Geology: A Digest of Russian Literature

... head waves. Zones of low velocity as a rule are extensive in area, have a small (10-20 m) thickness that is variable over short distances, and have...

Reflection Seismics Case Studies in Quaternary Deposits of East Coast Peninsular Malaysia

Umar Hamzah, Abd. Rahim Samsudin, Abdul Ghani Rafek, Noraini Surip

Geological Society of Malaysia (GSM)

... and King (1988). Data processing included gain recovery, velocity analysis, normal move out correction and common mid point stacking. Stacking...

Sand Ridges - Ignored Stratigraphic Traps

David R. Davies

New Orleans Geological Society

... are generated in areas where the tidal range is 10 ft or more (Off, 1963). Storms may increase the velocity of existing tidal currents, thereby reducing...

Porosity Log Crossplots

John H. Doveton

Special Publications of SEPM

... degree of correlation between density and acoustic velocity of quartz, calcite and dolomite, means that a sonic/density crossplot is a poor guide...

Impact of mineralogy on rock physics modeling: A Brazilian presalt case study

Rafael Amaral Cataldo, Emilson Pereira Leite, Nathalia Helena Secol Mattos

International Meeting for Applied Geoscience and Energy (IMAGE)

... behavior of carbonate reservoir rocks. These heterogeneous features may cause high data scattering in porosity-velocity cross-plots, which...

Evidence to Support near-Steady Flows (?) in an Alluvial Sandy System: The Plateau Formation Bako National Park, Sarawak

M. Johansson, D. A. V. Stow

Geological Society of Malaysia (GSM)

... as having been deposited in a sandy braided stream environment. This system is characterized by variable discharge, high bedload, complex bar forms...

Multichannel Seismic Operations for CCOP/SOPAC Cruise, Leg 3, Solomon Islands

D. M. Mann

Circum Pacific Council Publications

... of the depth controllers or variable-wing birds attached to the bird sections. Digital displays of the transducer response provide real-time monitor­ ing...

A Seismic Rock Properties Study of a Mesozoic Reservoir in Indonesia

Andi Alamsyah, Lantu, Sabrianto Aswad, Andi Darmawansyah

Indonesian Petroleum Association

... of compressional velocity (Vp) and density (ρ) only. Cross plots between AI and Gradient Impedance (GI), which is a function of Vp, Vs (shear velocity) and , were...

What will it take to improve the characterisation of deep mineral deposits in order to assess economic valueŽ early in the discovery process?

Joe Cucuzza

Petroleum Exploration Society of Australia (PESA)

... cheap to expensive to deploy in the field. Table 1. The geological parameters and how can geophysics can assist in defining them. Geological variable...

Technical Article: Finding Subtle Traps with Seismic: Interpretative Criteria Clarified

A. Easton Wren

Petroleum Exploration Society of Australia (PESA)

... relationship which combines the velocity and density of the upper and lower layer to produce a simple value which is the contrast in acoustic impedance...

Inversion of acoustic logs to predict secondary porosity and pore aspect ratios: Integrated with permeability and FMI images to characterize flow zones in a south Florida aquifer

Jorge O. Parra, Hughbert Collier, Aaron Collier

International Meeting for Applied Geoscience and Energy (IMAGE)

... to flow zones. The secondary porosity and pore aspect ratios are obtained by the inversion of P-wave and S-wave velocity logs in combination...

A Porosity Based Pore Pressure Estimation in an Indonesian Carbonate Reservoir

Sunawar Kunaifi, Krishna Pratama Laya, Sarvagya Parashar, Luqman, Banu Andhika

Indonesian Petroleum Association

... like shales, but with the added complication of diagenetic overprinting. This overprint can increase or decrease porosity and make velocity...

A New Apparatus for Recording Particle Size Distribution

C. L. Bascomb

Journal of Sedimentary Research (SEPM)

... gravel and sand, and settling velocity is used to measure the size of silt and clay particles (Appendix 1). When a composite curve is drawn showing...

Longitudinal Ripples Formed by Overland Flow and Tidal Currents

M.P. Mosley

Journal of Sedimentary Research (SEPM)

... after strong winds set in. Apparently, then, waves were a necessary condition for their occurrence. Water depth was variable, depending on state...

Chi (X): A Proposed Standard Parameter for Settling Tube Analysis of Sediments

James P. May

Journal of Sedimentary Research (SEPM)

.... Petrology, v. 42, p. 141-145. GIBBS, R. J., MATTHEWS, M. D., AND LINK, D. A., 1971, The relationship between sphere size and settling velocity: Jour...

Inorganic Structures: Lecture 4

Robert J. Weimer

AAPG Special Volumes

... (Fig. 5.3). The great variation of soil profiles on the earth's surface today is summarized by Fig. 5.2 reflecting the highly variable climatic...

Petrophysical and mineralogical evolution of weathered crystalline basement in western Uganda: Implications for fluid transfer and storage

B. Walter, Y. Géraud, D. Bartier, J.-M. Kluska, M. Diraison, C. Morlot, and F. Raisson

AAPG Bulletin

... a typical composite vertical weathering profile by the integration of data from samples with variable degree of alteration, ranging from fresh...

ABSTRACT: Rejuvenation of a Mature Field Through Application of a Unique Frequency Enhancement Technology; #90007 (2002)

Marcus L. Countiss

Search and Discovery.com

... different structural pictures. The presence of seismically mapped faulting was the variable in the interpretations. Even with the acquisition...

Abstract: Fracture Detection in the Migrated Domain: Practical Aspects of Prestack Time Migration of Azimuthally-limited 3D Land Data Volumes; #90171 (2013)

Mike Perz, Juefu Wang, and Ye Zheng

Search and Discovery.com

... vertical fracture detection methods attempt to measure in-situ HTI anisotropy by exploiting azimuthal variations in stacking velocity (“VVAZ...

Comparative Microseismic Interpretation of Hydraulic Fractures, #41308 (2014)

Shawn Maxwell

Search and Discovery.com

... hypocenter determination), mechanisms (relative moment tensors) and velocity structure (double difference local earthquake tomography). In each case...

Latitudinal Controls on Siliciclastic Sediment Production and Transport; #41923 (2016)

J. P. Syvitski, A. J. Kettner, I. Overeem, G. R. Brakenridge, S. Cohen

Search and Discovery.com

... — suspended sand concentration decreases by ∼2%, suspended silt and clay concentration drops off by only 0.35%, flow velocity decreases by ∼0.66...

The Rhomaa - Umaa Crossplot

John H. Doveton

Special Publications of SEPM

... the suppression of porosity as a variable and calculation of the apparent properties of the rock matrix. The log variables that are needed...

Abstract: New Approach to Finite-Difference Memory Variables by Using Lagrangian Mechanics; #90187 (2014)

Wubing Deng and Igor Morozov

Search and Discovery.com

... tensor (both indicated by the “external”, observable variable e ),  is the density,  and  are the Lamé moduli of the medium, and summations over...