Determining osmotic pressure in Niobrara chalk and Codell sandstone using high-speed centrifuge
Low salinity waterflooding is an emerging enhanced oil recovery (EOR) technique that has attracted the attention of the oil industry. However, the classical application of waterflooding in unconventional shale reservoirs is impractical because of the nanoscale dimension of the matrix pores. Salinity contrast across shale matrix blocks leads to osmotic pressures which expels oil from tight shale. This thesis exploited this phenomenon to measure osmotic pressure in shale core plugs. Typically, all the unconventional shale reservoirs produce hydrocarbon after hydraulic fracture stimulation. ...