Effective Use of Laboratory Measurements on Eor Planning

摘要

EOR design and risk mitigation often involves the use of laboratory results to further characterize frontal movement and interaction of the EOR agents within the reservoir; laboratory tests and protocols have been designed to address such uncertainties and constitute now a fundamental part of any EOR deployment. While the need for laboratory tests is recognized, specifics of the tests and uncertainty of the laboratory tests themselves are not widely known, or fully understood, which has the potential of inadequate usage of the laboratory results on the EOR performance estimations. This paper aims to provide guidance on use of the laboratory results in numerical models by identifying and pairing specific laboratory measurements to numerical requirements; that is recognizing what parameters are directly measured and which are estimated indirectly from either laboratory and field measurements. This paper addresses the requirements for chemical, miscible and WAG processes; and highlights the caveats of translation of the measurements onto numerical models as well as the inherent measurement uncertainties. A comprehensive numerical investigation is used to illustrate the effect and scalability of laboratory measurements for different displacement scenarios, accounting for finite-difference grid size, viscous-gravity forces, concentrations and fluid interaction. These results are used to further refine the remaining uncertainties on the displacement characterization and provide a solid start for the design of any field measurements including EOR pilot operations.