+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

A review of up-scaling and cross-scaling issues in core and log data interpretation and prediction

A review of up-scaling and cross-scaling issues in core and log data interpretation and prediction

Geological Society Special Publications 136: 9-16

In a heterogeneous geological formation, each rock petrophysical property (e.g., permeability, porosity, and electrical conductivity) reflects the heterogeneity and varies in a manner related to the underlying changes in fabric (grainsize, mineralogy, lamination, wettability, etc.). However, measurements, both laboratory and downhole, are made at certain volume scales dictated by the size of the core plug used or the wireline log resolution. The comparison of core and log data needs to account for both the scale and physics of the particular measurements and how these relate to the underlying scale of the geological heterogeneity of the formation. In this review, these two fundamental issues are addressed as follows; (a) measurement scale and how it relates to the ) true' or "required" petrophysical properties of the formation is defined as "up-scaling"; (b) measurement physics and how we relate the physics of one measurement (e.g. permeability) to that of another (e.g. density, electrical, or acoustic properties) is termed "cross-scaling". We illustrate how these two issues arise in the comparison and prediction of permeability using several published studies. We also outline an approach to petrophysical measurement reconciliation termed "genetic petrophysics". This combines all three elements--measurement scale, measurement physics, and geology--to provide an integrated and robust model. We illustrate this approach for permeability to provide fit-for-purpose models of anisotropy in the near-well region of a reservoir.

Please choose payment method:

(PDF emailed within 0-6 h: $19.90)

Accession: 029776109

Download citation: RISBibTeXText

DOI: 10.1144/gsl.sp.1998.136.01.02

Related references

Interpretation of Non-Clinical Data for Prediction of Human Pharmacokinetic Parameters: In Vitro-In Vivo Extrapolation and Allometric Scaling. Pharmaceutics 11(4):, 2019

Scaling-Up, Scaling-Down, and Scaling-Out Local Planning Strategies for Sea-Level Rise in New South Wales, Australia. Geographical Research 51(3): 292-303, 2013

Seriation and Multidimensional Scaling: A Data Analysis Approach to Scaling Asymmetric Proximity Matrices. Applied Psychological Measurement 16(2): 105-117, 1992

Interspecies scaling of bosentan, a new endothelin receptor antagonist and integration of in vitro data into allometric scaling. Pharmaceutical Research (new York). 13(1): 97-101, 1996

Scaling confounds the interpretation of isotopic data. International Journal of Environmental and Analytical Chemistry 92(1): 1-27, 2012

Interspecific scaling of toxicity data: a question of interpretation. Risk Analysis 9(1): 13-14, 1989

Modeling and interpretation of Nova's symmetry scaling data base. Physical Review Letters 73(17): 2328-2331, 1994

Adaptive scaling for an enhanced dynamic interpretation of 4D seismic data. Geophysical Prospecting 61: 231-247, 2013

Scaling up in watershed co-management the case of Higuito and Copan watersheds, Honduras 3 Enabling conditions, strategies, and actions for scaling up; co-management models and basic criteria for a scaling up methodology. Recursos Naturales Y Ambiente: , 28-36, 2008

The importance of scaling in data mining for toxicity prediction. Journal of Chemical Information and Computer Sciences 42(5): 1250-1255, 2002

Steganographic data transmission robust against scaling attacks (resistant-to-scaling-attacks) and eliminating the hampering effect of signal-carrier. Radioelectronics and Communications Systems 50(6): 289-297, 2007

Issues in scaling tree size and age responses to ozone A review. Environmental Pollution 98(2): 195-208, Nov , 1997 ( ), 1998

Issues in scaling tree size and age responses to ozone: a review. Environmental Pollution 98(2): 195-208, 1997

Well-data-based prediction of productivity decline due to sulphate scaling. Journal of Petroleum Science and Engineering 68(1-2): 60-70, 2009

Guttman scaling in agoraphobia: cross-cultural replication and prediction of treatment response patterns. British Journal of Clinical Psychology 29(1): 37-41, 1990