Abstract
The primary oil recovery mechanisms when are exhausted, leave enormous quantities of oil unrecovered. The advancement of oil recovery is a cardinal obligation in oil industry. From waterflooding to various thermal recovery operations, the predominant objective of the improved oil recovery processes is to increase the rate of recovery and the ultimate production from reservoirs. Most of the improved recovery processes are directed to improve the mobility of oil in porous media. Obviously, the field implementation scheme of these processes is also an important factor in determining the success of the project. The use of horizontal wells in waterflooding operations promises a pronounced improvement in the rate of oil recovery under certain conditions. In a low mobility ratio flood, horizontal wells are able to bring in an increase of 0.25 pore volumes to the recovery during the early injection periods compared to vertical wells. In this study, a numerical simulator is acquired to delve into the effectiveness of horizontal and vertical injector/producer well combinations in waterflooding applications. The effects of various waterflooding fluid parameters together with some operational design parameters are investigated. The analysis of the simulation studies conducted suggests that the combination, in which one horizontal and one vertical well are utilized, in several situations performs similar to the combination, in which two horizontal wells are incorporated.
