High-resolution Electrical Borehole Images While Drilling

Jeremy Lofts, Stephen Morris

AAPG Special Volumes

... from a fracture in a correlatable layer shows the partial cementation. The fracture response in the image is caused by anisotropy: conductive sinusoid...

Coalification: The Evolution of Coal as Source Rock and Reservoir Rock for Oil and Gas: Chapter 3

Jeffrey R. Levine

AAPG Special Volumes

..., I., 1986, Vitrinite anisotropy under differential stress and high confining pressure and temperature: preliminary observations: International Journal...

Quantitative Outcrop Data for Flow Simulation

Brian J. Willis , Christopher D. White

Journal of Sedimentary Research (SEPM)

... semivariograms for lithofacies 2-4 have been rescaled by multiplying the vertical lag by the vertical/horizontal anisotropy ratio: the actual vertical...

Calcite Moonmilk: Crystal Morphology and Environment of Formation in Caves in the Italian Alps

Andrea Borsato , Silvia Frisia , Brian Jones , Klaas Van Der Borg

Journal of Sedimentary Research (SEPM)

... of anisotropy in the solid-liquid interfacial energy may take place (Givargivoz 1978). The growth of fiber calcite crystals in moonmilk deposits is ultimately...

Preferred Clast Orientation in Volcaniclastic Mass-Flow Deposits: Application of a New Photo-Statistical Method

David Karatson, Orsolya Sztano, Tamas Telbisz

Journal of Sedimentary Research (SEPM)

... and deposition of the Ito pyroclastic flow: Determinations using anisotropy of magnetic susceptibility: Journal of Geophysical Research, v. 102 [B10], p...

Source of Anomalous Magnetization in Area of Hydrocarbon Potential: Petrologic Evidence from Jurassic Preuss Sandstone, Wyoming-Idaho Thrust Belt

Neil S. Fishman, Richard L. Reynolds, Mark R. Hudson, Vito F. Nuccio

AAPG Bulletin

.... Christie, K. W., and D. T. A. Symons, 1969, Apparatus for measuring magnetic susceptibility and its anisotropy: Geological Survey of Canada Paper 69-41...

Permeability Prediction from Geologic Models

Steven Bryant , Christopher Cade , David Mellor

AAPG Bulletin

... of the exterior cell faces. Other details of the algorithm are given in Mason and Mellor (1991). RESULTS: PERMEABILITY ANISOTROPY The region of Finney's...

Probe Permeametry: An Overview and Bibliography

Andrew Hurst , David Goggin

AAPG Bulletin

... on heterogeneous rocks: SPE 27650. *Manrique, J. F., E. Kasap, and D. Georgi, 1994b, Effect of heterogeneity and anisotropy on probe permeameter measurements...

Fault orientation variations along the strike of active normal fault systems in Italy and Greece: Implications for predicting the orientations of subseismic-resolution faults in hydrocarbon reservoirs

Gerald P. Roberts

AAPG Bulletin

... zones, the frequency and spacing encountered by a well will vary as a function of the well orientation relative to the anisotropy. Fault and fracture...

Precambrian basement reservoirs: Case study from the northern Bongor Basin, the Republic of Chad

Lirong Dou, Jingchun Wang, Renchong Wang, Xiaodong Wei, and Chandramani Shrivastava

AAPG Bulletin

... on the degree of weathering, intensity of fracturing, and sonic anisotropy. The basement can be divided vertically into four zones: weathered and leached...

A comparison of three-dimensional–printed porous rocks with nano x-ray computed tomography: Silica sand, gypsum powder, and resin

Lingyun Kong, Mehdi Ostadhassan, Bo Liu, Mohsen Eshraghi, Chunxiao Li, Miguel Navarro, Yihuai Zhang, and Huabin Wei

AAPG Bulletin

..., R. Holt, and L. Renlie, 1995, P-and S-wave anisotropy of a synthetic sandstone with controlled crack geometryl: Geophysical Prospecting, v. 43, no. 6...

Lithofacies control on the formation of deformation bands: An example from the Sherwood Sandstone Group (Induan–Anisian, Lower Triassic) in western England

Oliver J. W. Wakefield, Ed Hough, Jan A. I. Hennissen, Joanna Thompson, Catherine Cripps, and Daniel Parkes

AAPG Bulletin

... and the anisotropy created, and hence, their overall impact on a reservoir and/or aquifer. These gaps in our understanding are difficult to address at the local...

Numerical modeling of microfracturing and primary hydrocarbon expulsion in the Jurassic Lower Tuwaiq Mountain Shale: A conceptual framework

Syed Haider, Tadeusz W. Patzek, Thomas Finkbeiner, and Ralf Littke

AAPG Bulletin

... Duhailan et al., 2013) because of tensile strength anisotropy and kerogen grain ellipticity. Both of these factors result in variable stress concentration...

CSPG/CSEG/CWLS GeoConvention 2012, May 14-18, 2012 Calgary TELUS Convention Centre & ERCB Core Research Centre, Calgary, Alberta, Canada; - Abstracts, #90174 (2014).

Search and Discovery.com

Introduction - Application of Resistivity-Tool-Response Modeling for Formation Evaluation - Archie Series No. 2

Hezhu Yin

AAPG Special Volumes

... of such environmental conditions as borehole rugosity, caves, mud cake, invasion, dip, shoulder beds, and formation anisotropy on resistivity-tool response is now...

Chapter 1: Introduction - Geological and Petrophysical Characterization of the Ferron Sandstone for 3-D Simulation of a Fluvial-Deltaic Reservoir (MP-02-6)

Thomas C. Chidsey Jr., T.A. Ryer, T.H. Morris

Utah Geological Survey

... within the Ferron Sandstone outcrop belt which served as reservoir analogues. Determining permeability anisotropy within each facies was an important task...

Horizontal Wells in Environmental Geology

Milovan S. Beljin, George Losonsky

Environmental Geosciences (DEG)

... commonly fail to yield significant volumes of groundwater. Figure 4. Productivity ratio versus hydraulic conductivity. Anisotropy Estimation When...

Structures Associated with the Southwest Margin of the Ancestral Uncompahgre Uplift

M. A. White, M. I. Jacobson

Grand Junction Geological Society

... fabric imparted an anisotropy to the basement rocks and influenced the orientations of later faults and folds in the area. However, other structures...

Evidence for the Origin of the Canada Basin Margin by Rifting in Early Cretaceous Time*

J. F. Sweeney

Alaska Geological Society

... Geological Society (this volume). Mair, J. A., and Lyons, J. A., 1981, Crustal structure and velocity anisotropy beneath the Beaufort Sea: Canadian Journal...

Deformation of Authochthonous Foreland Basement, Clark Mountain Thrust Complex, Southeastern California

Eric P. Nelson, B.C. Burchfiel

Rocky Mountain Association of Geologists

..., it acted as homogeneous, isotropic rock due to large pre-existing folds of the foliation which tended to reduce the mechanical effect of the anisotropy...

Coupling diagenesis and mechanics for more realistic simulation of natural fracture pattern development

Byungtark Lee, Jon E. Olson, Stephen E. Laubach

International Meeting for Applied Geoscience and Energy (IMAGE)

... quality, seismic velocity, attenuation and anisotropy: Taylor and Francis, 483–558. Bertuzzi, R., 2019, Estimating rock mass properties: PSM. Crouch...

Elastic full-wavefield inversion for presalt carbonate reservoir characterization in offshore Brazil

Young Ho Cha, Partha Routh, Olivier Burtz, Valeriy Brytik, Ratnanabha Sain, Jeffrey Sitgreaves, Jay Barr, Dez Chu, Michael Passarello

International Meeting for Applied Geoscience and Energy (IMAGE)

... reservoir, high-end seismic processing technologies such as FWI, RTM and TTI anisotropy processing and model building has been applied to get reliable...

Acquisition trial of deep smart DAS uphole: Evaluating high-productivity drilling with dual rotary and fiber cable deployment

Andrey Bakulin, Ezzedeen Alfataierge, Richard Berquist, Francois Hermal

International Meeting for Applied Geoscience and Energy (IMAGE)

... enable measuring of near-surface polar and azimuthal anisotropy as well as characterizing the distribution of smalland medium-scale near-surface...

Seismic assessment of maturity and richness in carbonate source rocks

Mita Sengupta, David Jacobi, Shannon Eichmann, Brad Wallet, Yazeed Altowairqi, Salma Alsinan

International Meeting for Applied Geoscience and Energy (IMAGE)

... & Engineering, 14, 533–543, doi: https://doi.org/10.2118/123531-PA. Sayers, C. M., 2013, The effect of kerogen on the elastic anisotropy of organic-rich shales...

Geothermal Exploration in West Java

Solia Wiradiradja, Surahman Suari, Yunus Razali, L. Pekar

Indonesian Petroleum Association

... a possible anisotropy, this sounding was carried out in two perpendicular directions. Comparison of these two soundings shows a non negligible...