Statistical distributions and correlations of petrophysical parameters in the Arab-D
reservoir, Abqaiq oilfield, Eastern Saudi Arabia
By: Sahin, A (Sahin, A); Saner, S (Saner, S)
JOURNAL OF PETROLEUM GEOLOGY
Volume: 24
Issue: 1
Pages: 101-114
DOI: 10.1111/j.1747-5457.2001.tb00663.x
Published: JAN 2001
View Journal Information
Abstract
The Upper Jurassic A rab-D is a complex carbonate reservoir present in the Eastern
Province of Saudi Arabia. It has been subdivided into five zones on the basis of porosity. A statistical analysis of the extensive dataset from the three productive zones in the reservoir unit (Zones 1, 2 and 3) has shown that patterns of well-log porosity and core porosity distributions are strikingly similar in each zone, but that the means are not. Consistently higher mean values observed in core distributions can be explained by a possible bins in core selection and/or differences in the measurement conditions. The results also show that each zone has a distinctive pattern of porosity distribution, reflecting its general lithological character
The corresponding distributions of vertical and horizontal core permeability are similar; brit the means of horizontal permeability in Zones I and 2 are higher than the corresponding means of vertical permeability. The reverse is true for Zone 3, in which mean vertical permeability is slightly higher than horizontal permeability. This is probably due to the presence of vertical hairline fractures, which were frequently observed in muddominated facies in Zone 3.
The permeability distribution for each zone is generally consistent with the corresponding porosity distribution, reflecting a degree of correlation between porosity and permeability.
However, semi-log plots of core porosity versus core permeability indicate a relatively poor correlation between these variables, with the correlation coefficient being less than 0.7. for all zones. Separate correlation plots for each lithology within Zone I indicate that the lithological control on porosity is not very significant in this zone.
Keywords
KeyWords Plus: HYDROCARBON HABITAT ; AREAS ; FIELD
Author Information
Reprint Address: Sahin, A (reprint author)
King Fahd Univ Petr & Minerals, Res Inst, Ctr Petr & Minerals, Dhahran 31261, Saudi
Arabia.
Organization-Enhanced Name(s)

King Fahd University of Petroleum & Minerals
Addresses:
[ 1 ] King Fahd Univ Petr & Minerals, Res Inst, Ctr Petr & Minerals, Dhahran 31261, Saudi
Arabia
Organization-Enhanced Name(s)
King Fahd University of Petroleum & Minerals
E-mail Addresses: asahin@kfupm.edu.sa
; ssaner@kfupm.edu.sa
Document Information
Document Type:Article
Language:English
Accession Number: WOS:000167222700005
ISSN: 0141-6421