Reservoir characterization and volumetric estimation of reservoir fluids using simulation and analytical methods: a case study of the coastal swamp depobelt, Niger Delta Basin, Nigeria

B. K. Kurah, M. S. Shariatipour, K. Itiowe

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)
635 Downloads (Pure)

Abstract

Suites of wireline well logs and three-dimensional (3D) seismic data were integrated to characterise the reservoir and estimate the hydrocarbon in Otigwe field, coastal swamp depositional belt, Niger Delta. The 3D seismic data were used to generate seismic sections through which fourteen faults and two horizons of interest were mapped across four wells. Depth structural map generated from the mapped faults and horizons of interest shows that the trapping mechanism within the field is fault-supported anticlinal structural trap. The four available wells were correlated using lithostratigraphic correlation to establish two reservoir continuities (Reservoir A and B). The estimated reservoir fluid volume at surface condition using reservoir simulation and modelling software is 59 MMstb for reservoir A and 25.70 MMstb for reservoir B. On the other hand, the estimated reservoir fluid volume at surface condition using analytical method is 52.58 MMstb for reservoir A and 18.85 MMstb for reservoir B. Using reservoir simulation and modelling software, the average net-to-gross ratio and shale volume for reservoir A range from 0.86 to 0.89 and 0.11 to 0.14, respectively, while for reservoir B the range is between 0.69 to 0.82 and 0.18 to 0.31, respectively. On the flipside using the analytical method, the average net-to-gross ratio and shale volume for reservoir A is 0.78 and 0.22, respectively. The results from the volumetric estimation of reservoir fluids showed close values using both methods and reservoir A is more prolific compare to B.

Original languageEnglish
Pages (from-to)2347–2365
Number of pages19
JournalJournal of Petroleum Exploration and Production
Volume11
Issue number6
Early online date15 Jun 2021
DOIs
Publication statusPublished - Jun 2021

Bibliographical note

Publisher Copyright:
© 2021, The Author(s).

Keywords

  • Characterization
  • Permeability
  • Porosity
  • Prolific
  • Volumetric

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Energy(all)

Fingerprint

Dive into the research topics of 'Reservoir characterization and volumetric estimation of reservoir fluids using simulation and analytical methods: a case study of the coastal swamp depobelt, Niger Delta Basin, Nigeria'. Together they form a unique fingerprint.

Cite this