4D assisted seismic history matching using a differential evolution algorithm at the Harding south field

P. Mitchell, R. Chassagne

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

4D Assisted Seismic History Matching (4D ASHM) has been implemented and successfully applied to the Harding South field in the North Sea. A Success-History Based Parameter Adaption Differential Evolutionary (SHADE) algorithm was used to minimise an objective function derived from the observed and simulated 4D seismic data. Quantitative misfit values for the objective function were computed by binarisation of 4D attribute maps extracted from the observed and simulated 4D difference volumes. Multipliers of several reservoir model parameters including net-to-gross ratio, porosity, permeability and fault transmissibility were automatically updated through fifteen genetic evolutions with ten individuals in each generation. Reservoir simulations were run for each individual's model parameters and the property grids used to compute saturations, impedances and synthetic 4D seismic volumes through production time. The 4D ASHM process converged to stable solutions after 15 genetic evolutions. The objective function reached a minimum value with low variance and the the seven reservoir parameters reached stable values. The net-to-gross ratio and porosity were increased to provide a larger oil volume. The match between the observed and modelled 4D seismic data improved and the history-match to the producing wells was significantly better.

Original languageEnglish
Title of host publication81st EAGE Conference and Exhibition 2019
PublisherEAGE Publishing BV
ISBN (Electronic)9789462822894
Publication statusPublished - 3 Jun 2019
Event81st EAGE Conference and Exhibition 2019 - London, United Kingdom
Duration: 3 Jun 20196 Jun 2019

Conference

Conference81st EAGE Conference and Exhibition 2019
CountryUnited Kingdom
CityLondon
Period3/06/196/06/19

Fingerprint

histories
history
Porosity
seismic data
porosity
Evolutionary algorithms
Oils
multipliers
permeability
oils
grids
impedance
saturation
well
parameter
oil
simulation
attribute

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Geophysics

Cite this

Mitchell, P., & Chassagne, R. (2019). 4D assisted seismic history matching using a differential evolution algorithm at the Harding south field. In 81st EAGE Conference and Exhibition 2019 EAGE Publishing BV.
Mitchell, P. ; Chassagne, R. / 4D assisted seismic history matching using a differential evolution algorithm at the Harding south field. 81st EAGE Conference and Exhibition 2019. EAGE Publishing BV, 2019.
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Mitchell, P & Chassagne, R 2019, 4D assisted seismic history matching using a differential evolution algorithm at the Harding south field. in 81st EAGE Conference and Exhibition 2019. EAGE Publishing BV, 81st EAGE Conference and Exhibition 2019, London, United Kingdom, 3/06/19.

4D assisted seismic history matching using a differential evolution algorithm at the Harding south field. / Mitchell, P.; Chassagne, R.

81st EAGE Conference and Exhibition 2019. EAGE Publishing BV, 2019.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Mitchell P, Chassagne R. 4D assisted seismic history matching using a differential evolution algorithm at the Harding south field. In 81st EAGE Conference and Exhibition 2019. EAGE Publishing BV. 2019