We examine methods of monitoring surface deformations in a producing oil and gas field, and the numerical modeling of these deformations. Our analysis uses seven years of annually repeated precise leveling which reveals the vertical deformation of the field and three years of Global Positioning System (GPS) measurements that reveal both horizontal and vertical deformations. The GPS measurements are carried out with a combination of continuously operating receivers and set of periodically measured benchmarks. There are five continuously operating receivers with one located outside of the thought-to-be deforming region and four inside the deforming region.

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