By Vladimir Alvarado, Eduardo Manrique
Enhanced-Oil restoration (EOR) reviews inquisitive about asset acquisition or rejuvenation contain a mix of complicated judgements, utilizing diverse facts resources. EOR tasks were normally linked to excessive CAPEX and OPEX, in addition to excessive monetary chance, which are inclined to restrict the variety of EOR initiatives introduced. during this e-book, the authors suggest workflows for EOR reviews that account for various volumes and caliber of data. this versatile workflow has been effectively utilized to grease estate reviews and EOR feasibility reports in lots of oil reservoirs. The technique linked to the workflow is determined by conventional (look-up tables, XY correlations, etc.) and extra complicated (data mining for analog reservoir seek and geology symptoms) screening equipment, emphasizing identity of analogues to help selection making. The screening part is mixed with analytical or simplified numerical simulations to estimate full-field functionality by utilizing reservoir data-driven segmentation tactics. Case reviews shape Asia, Canada, Mexico, South the USA and the USA resources evaluated comprise reservoir varieties starting from oil sands to condensate reservoirs. diversified levels of improvement and knowledge availability are mentioned
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Extra info for Enhanced Oil Recovery: Field Planning and Development Strategies
2 CONVENTIONAL SCREENING The most commonly used approach to selecting recovery processes for a reservoir is so-called conventional screening, which we refer to as “go–no go” screening. This strategy is based on look-up tables where intervals of validity are established on the basis of engineering considerations by collecting “expert opinions” or by analyzing data from successful field cases. A combination of all of these approaches is the most likely situation encountered. In this screening method, typically average representative fluid and reservoir properties of a particular field under evaluation are compared with intervals of the look-up table to decide whether the field or reservoir is suitable (which is why it is called go–no go) for a given recovery process.
Propane or enriched gases) injection methods can improve oil recovery because they can lower residual oil saturations more than waterflooding alone. Miscibility of the displacing solvent, or high-pressure gas, with reservoir oil results in the reduction of interfacial tension with a corresponding increase in the capillary number and oil recovery. , presence of thief zones or high permeable channels), gas injection is preferred in light oil (> 35 API gravity) and low-permeability (< 50 md) reservoirs.
They are considered as representative of two different areas of the block: structurally high and low (to account for high gas saturation and high water saturation, respectively). 32 3. 9 Section of the northwest area of the full-field model of the VLE field. The two red rectangles indicate the selected areas for analytical simulation. 13 show the zoomed-in areas of the selected block, along with 2-D sections between the injector–producer pair in each area. Intervals that offer little potential for production under waterflooding because of high water saturation will be shut in for the simulations.