@inproceedings{ef0604c227bb4658bd75bd47e83ba6e9,
title = "Efficient trans-dimensional gravity inversion of salt structures offshore Abu Dhabi",
abstract = "This work investigates nonlinear inversion of gravity data to infer Infracambrian Hormuz salt structures offshore Abu Dhabi, UAE. A Bayesian approach with a trans-dimensional parametrization of the subsurface is applied that does not require regularization, resulting in more objective inversion results. The trans-dimensional parametrizations discretize the subsurface structure including the salt dome by an irregular grid of Voronoi cells. Both the number of cells and the cell coordinates are unknown parameters estimated from gravity data. The density contrast of the salt structures is assumed as known. The solution in Bayesian inversion is given by a large ensemble of parameter sets. Here, the trans-dimensional ensemble is obtained with the reversible-jump Markov chain Monte Carlo (rjMCMC) algorithm. Residual errors are parametrized by a full covariance matrix, which is estimated and updated as part of an iterative inversion scheme. Efficient rjMCMC sampling is achieved with parallel tempering. Inversion of airborne gravity anomalies illustrates well-defined Infracambrian Hormuz salt structures offshore Abu Dhabi, where the irregular grid spatially adapts to the data information and without the need to impose explicit regularization or fixed grids. Uncertainty estimates highlight salt dome extent. This study provides new insight into the existence and shape of oil reservoirs associated with the underlying salt structures.",
author = "Noei, {Emad Ghaleh} and Jan Dettmer and Mohammed Ali and Lee, {Gyoo Ho} and Kim, {Jeong Woo}",
note = "Funding Information: Elements of this study were supported from the Korea Agency for Infrastructure Technology Advancement grant funded by Ministry of Land, Infrastructure and Transport (#18IFIP-B133607-02, Development of the MWD in directional propulsion system and the technical support of design and evaluation of directional propulsion system). This publication is based upon work supported by the Khalifa University of Science and Technology under Award No. CIRA-2019-008. Publisher Copyright: {\textcopyright} 2019, Society of Petroleum Engineers; Abu Dhabi International Petroleum Exhibition and Conference 2019, ADIP 2019 ; Conference date: 11-11-2019 Through 14-11-2019",
year = "2019",
doi = "10.2118/197962-MS",
language = "British English",
series = "Society of Petroleum Engineers - Abu Dhabi International Petroleum Exhibition and Conference 2019, ADIP 2019",
booktitle = "Society of Petroleum Engineers - Abu Dhabi International Petroleum Exhibition and Conference 2019, ADIP 2019",
}