Efficient Assimilation of Crosswell Electromagnetic Data Using an Ensemble-Based History-Matching Framework

Abstract
An ensemble-based history-matching framework is proposed to enhance the characterization of petroleum reservoirs through the assimilation of crosswell electromagnetic (EM) data. As an advanced technology in reservoir surveillance, crosswell EM tomography can be used to estimate a cross-sectional conductivity map and associated saturation profile at an interwell scale by exploiting the sharp contrast in conductivity between hydrocarbons and saline water. Incorporating this information into reservoir simulation in combination with other available observations is expected to enhance the forecasting capability of reservoir models and to lead to better quantification of uncertainty.

Acknowledgements
Support for authors Yanhui Zhang and Ibrahim Hoteit is provided by the research project “Efficient Integration of Electromagnetic Tomography into Reservoir History Matching,” which is funded by Saudi Aramco. The authors also thank Wim Mulder and Marwan Wirianto for providing the multigrid EM forward solver that formed the basis for our inversion.

Journal
SPE JOURNAL

Additional Links
https://watermark.silverchair.com/spe-193808-pa.pdf?token=AQECAHi208BE49Ooan9kkhW_Ercy7Dm3ZL_9Cf3qfKAc485ysgAAAuMwggLfBgkqhkiG9w0BBwagggLQMIICzAIBADCCAsUGCSqGSIb3DQEHATAeBglghkgBZQMEAS4wEQQMPc6Ngtij3nkwDTnJAgEQgIIClh-iXG7ihOL7LSJ6rWMbXHyXv_RV6sY5w0RRJ0mskOGdilJLx_byezIH5n8AuZh3cPPCP0IrJUQH05cg_8AOvZ9OHmZrBUjeWNZo7QjVJBN6i37ujIUGe6SwekzM0Vg1lZLwgAbwtfbFMKoFsRFEjdkcESRnkakZK8tZXwKjMaNXEYzIZNSdpnMJQan5j6Oqakugq3G4_IKxQj5Ihj1QLWbFuKW-wFE6nPBoPb3yaghz5vuSHZTWU8G7u1WnODfEF-8HgcesctdRJfIiinmO3J4tb4KCOnXQjjq4sjr7E3BQMciQ-ZFijrXt5UX6N4USVKbE1Ue8jXxAOMcfLUivU58W5ARmvR8Q_NH0N9WZLYfLZCWmSxaNVepnaz3xpcCsgnk-P1AU7i5sGLsUipeiWbrSfzTYnVYlsZ3bfny9MLOqQzryWTHdRCn93-iSrgYALosUGXbAXqpYFdHbEdrIq4qDQ4k7nEuel1dKOFAlQK3g1oeU7MDXZZSgsqVo5DQKPwwkTQJQMaBTE-ynueyUzEERn1DStwNL-kaVqSHAyswuHz7_dgyw6yn1LYeaw7sMdJXsfOHcOzZ7oLR1MYd267JcSjkf6oREKBVgGBc7s0ZUUSzbsR4Y3p5JTFt6Ms2BSbX0KBZgYtjVYWMwprfpHO659HitFaerKG-e7fecrZLYee9i4s6I2O1uXYCXUq5Y6hHPpm15_Kbv98iYwSZRWHXcH8tDF4EEuoCyKAoJv0SuXPdDoAxe7QxdLoBhRdMWFo1HVIBpXP4lMOOIG95rknfL7YJ0hgddI0VjsL8UAesJ2SsdPVZF-DL4domkhSJyPsXENtdGezuCJwuNDQt5eJAvvub9E29AIAn0x_x0DeKf3mPSsy8n

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