Contents Chapter 46: Surface Subsidence Caused by Reservoir Depletion | Print page 46.9. ReferencesThe following reference work is ciited in this example problem:Geertsma, J. (1973). Land subsidence above compacting oil and gas reservoirs. Journal of Petroleum Technology. SPE-3730-PA.. Society of Petroleum Engineers. 25.6: 734. « 46.8. Recommendations 46.10. Input Files »