Learn Reservoir Simulation: Water Injection

Explore reservoir simulation for secondary oil recovery using water injection to boost production after primary declines. Gain hands-on experience setting up, running, and analyzing simulations in petrol 2020.

Explore water injection workflows, reviewing input, relative permeability and j function, history matching, and injection strategies. Build mobility and reservoir opportunity indices, model peripheral injection patterns, and perform sensitivity analyses.

Download the petrol file for the water injection model from Google Drive, ensure you have petrol 2020 or newer, and follow the 410-step guide with the Excel instruction file.

Review PVT inputs by plotting and comparing solution gas oil ratio and formation volume factor against pressure, ensuring consistency with lab data for initialization and history matching.

Compare history matching results for M0 and M2, focusing on aquifer pressure support and oil and water production, aided by relative permeability adjustments in the Decatur Tennessee aquifer model.

Review NFA two development strategy with group rate control, per-well rate limits, and 200 psi bottom-hole pressure, and assess infill wells and water injection plans using the simulation opportunity index.

Compare water injection strategies in two flood cases by converting wells to injectors, applying a 2000 bpd minimum, and using surface rate and bottom-hole pressure control for injector placement optimization.

Learn to compute the reservoir opportunity index (ROI) from cpv index, oil relative permeability index, and pressure index to identify optimal water injection locations.

Explore ROI method 2 for reservoir opportunities by defining CPV and CRO indices, incorporating current and abandonment pressures, mobility ratio, and water injection effects to map ROI with Eclipse.

Extract average maps for kpvi, roi, pri, and mi to locate high-potential injection zones. Highlight the green roi as the best water injection area.

Use peripheral water injection to maintain pressure by placing injectors around producing wells and displacing oil toward wells. Explore four spot, inverted four spot, five spot, and staggered line drive.

Learn to create peripheral water injection wells from point coordinates in Excel. Add 21 wells in the well manager with TD and datum settings.

Design a five spot well pattern for the infield by building a polygon with x y coordinates, adjusting radius in meters, and managing wells via the well manager.

Place infill five at the provided coordinates and construct a five-spot well pattern for three wells using 200 meter spacing: well seven, injection two, and infill five as input objects.

Construct a five-spot pattern with inverted water injection, designating injectors and producers, while examining interference affecting INF three production and anticipate the Vrar concept in the next video.

Learn about the voidage replacement ratio, VRR, defined as injected liquid volume divided by produced liquid. VRR of one maintains pressure and displaces oil, while deviations impact recovery and overinjection.

Learn to perforate peripheral water-injection wells into the water-bearing zone and use automated five-spot perforation design with ROI thresholds to target the water zone.

Define and compare simulation cases for existing and peripheral water injection, with five-spot patterns and VRR, to forecast oil production, water production, liquid production, water injected, and recovery factor.

Explore building a development strategy around injection and production wells, set up VRR, and manage BHP limits using new cases three to nine, then review solutions after the prior video.

Compare multiple water injection cases—five-spot, infill, and peripheral injections—using an objective function to compare recovery factors and identify the best strategy.

Leverage a proxy model to estimate recovery under uncertainty using a quadratic response surface and Box-Behnken sampling. Optimize VRR, max bhp, economic limit, and water cut to maximize recovery.