Due to the depletion of conventional reservoirs and high demand energy, unconventional will be relied on supply world's energy for foreseeable future. Unfortunately, because their complex storage flow mechanisms, modelling analysis have been very challenging. Although semi-analytical numerical models proposed, these rely somewhat simplifying assumptions require several input parameters. In this...

Daqing Oilfield is rich in low permeability reservoirs. In order to fully understand the development dynamics of ultra-low reservoirs, this paper takes as an example and studies productivity fractured horizontal Wells by numerical simulation method. The results show that decreases exponentially with decrease formation permeability. well increases fracture length spacing. With increase coefficie...

The main purpose of this investigation is to study the effect of near miscible CO2 injection in different porous mediums on both lab and field scales. This effect can be traced by the change of two-phase gas-oil relative permeability curves. In this work, the experiments have been performed on three rock types (i.e. sandstone, dolomite, and artificial fractured sandstone) based on an incrementa...

Often oilfield fractured horizontal wells produce water flowing in multiple directions. In this study, a method to identify such channeling paths is developed. The dual-medium model based on the principle of inter-well connectivity and considers flow characteristics related terms. Lorentz curve drawn qualitatively discern geological type low-permeability reservoir determine direction size. prac...