International journal of

ADVANCED AND APPLIED SCIENCES

EISSN: 2313-3724, Print ISSN:2313-626X

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 Volume 6, Issue 4 (April 2019), Pages: 20-32

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 Original Research Paper

 Title: Delineation of reservoir lateral continuity for flow zones in wells using cluster analysis: Case of West Baram Delta, offshore-Sarawak

 Author(s): I. Yusuf 1, 2, *, E. Padmanabhan 1

 Affiliation(s):

 1Department of Geosciences, Faculty of Geosciences and Petroleum Engineering, Universiti Teknologi PETRONAS, Postcode 32610, Seri Iskandar, Perak, Malaysia
 2Department of Geology and Mining, Faculty of Applied Science and Technology, IBB University, Lapai Niger State, Nigeria

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 * Corresponding Author. 

  Corresponding author's ORCID profile: https://orcid.org/0000-0002-1534-3052

 Digital Object Identifier: 

 https://doi.org/10.21833/ijaas.2019.04.003

 Abstract:

Reservoir property modeling is often used to determine lateral extent and continuity in targeted multiple wells for implementation of any enhanced oil recovery (EOR) methods. Some works were reported that most of EOR techniques are controlled by static-dynamic lateral extent and continuity within reservoir pay zones succession as they contribute to poor recovery in fields. Therefore, delineation of lateral extent and continuity using a statistical approach could save time, less cumbersome and data required. This paper by cluster analysis delineates lateral extent of 5 exploratory wells by integration of microscopic petrographic and petrophysical data from 132 subsurface and 97 core plugs. Result reveal four main petrofacies clusters of good lateral extent and continuity that corresponds to section (Blue cluster) characterized by massive coarse grained sandstones, massive fine grained sandstones and massive very fine grained sandstone lithofacies with average porosity (18 - 32%), permeability (400 -1189 mD) at depths between 859 and 2129m. The Green cluster is dominated by massive fine grained and massive medium grained sandstone lithofacies exhibit average porosity (15- 30%), permeability (110 - 840 mD) at depth from 880 - 1805m, while Brown cluster comprises of massive medium grained and massive fine grained sandstone lithofacies exhibit an average porosity (18 -25%) and permeability (210-657 mD). The understandings of porosity-permeability continuity can facilitate effective areal sweep efficiency from injected fluid well to production well during recovery. Thus, this approach is important to improve the field plan for reservoir engineers. 

 © 2019 The Authors. Published by IASE.

 This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

 Keywords: Petrofacies, Flow zone, Reservoir lateral continuity, Cluster analysis, West Baram Delta

 Article History: Received 28 October 2018, Received in revised form 4 February 2019, Accepted 5 February 2019

 Acknowledgement:

This research was supported by Universiti Teknologi PETRONAS, Malaysia under Graduate Assistantship Scheme. The author would like to thank PETRONAS for providing me with PhD scholarship opportunity and subsurface core specimens for this work.

 Compliance with ethical standards

 Conflict of interest:  The authors declare that they have no conflict of interest.

 Citation:

 Yusuf I and Padmanabhan E (2019). Delineation of reservoir lateral continuity for flow zones in wells using cluster analysis: Case of West Baram Delta, offshore-Sarawak. International Journal of Advanced and Applied Sciences, 6(4): 20-32

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 Figures

 Fig. 1 Fig. 2 Fig. 3 Fig. 4 Fig. 5 Fig. 6 Fig. 7 Fig. 8 Fig. 9 Fig. 10 Fig. 11 Fig. 12 Fig. 13 Fig. 14 Fig. 15 Fig. 16 Fig. 17 Fig. 18 Fig. 19 

 Tables

 Table 1 Table 2 Table 3 Table 4 Table 5 

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