Model fluid sweep performance across layered reservoir zones. Tune inputs for patterns, mobility, and thickness. Export tables and reports, then optimize recovery confidently now.
| Scenario | EA (%) | EV (%) | ED (%) | ES (%) |
|---|---|---|---|---|
| Moderate mobility, layered zone | 65 | 75 | 55 | 26.81 |
| Improved conformance treatment | 72 | 82 | 55 | 32.47 |
| Higher displacement efficiency | 65 | 75 | 65 | 31.69 |
Sweep efficiency estimates the contacted fraction of a reservoir during injection. In many waterfloods, composite sweep may sit around 20–40%, while well‑managed projects can exceed that range when conformance is strong. Engineers use the metric to link pattern design, rate strategy, and surveillance to expected recovery and to flag bypassed zones that drive early breakthrough and higher operating costs.
Areal sweep is plan‑view coverage across the pattern area. It generally declines as mobility ratio rises above 1, because fingering and channeling reduce front stability. Pattern geometry also matters: spot patterns can improve coverage when connectivity is uniform, while line drive performance depends heavily on alignment with permeability trends. Balanced injection and producer drawdown help maintain a broader flood front.
Vertical sweep describes how evenly injected fluid occupies the pay thickness. High permeability contrasts, thin thief streaks, or commingled completions often cause flow to concentrate, leaving lower‑perm layers under‑swept. Heterogeneity indicators such as the Dykstra–Parsons coefficient (0 to 1) provide a practical screening signal: higher values often imply poorer vertical conformance. Zonal isolation, selective injection, and profile control can lift vertical sweep materially.
Displacement efficiency reflects microscopic displacement inside swept rock. It is driven by relative permeability, wettability, capillary number, and the mobility of the displacing phase. Polymer can improve mobility control, and miscible gas can reduce residual oil saturation, raising ED compared with a base waterflood. Field estimates typically come from laboratory corefloods, analogs, and simulation, then are updated with water cut and pressure behavior.
The calculator is most powerful for scenario comparison. Start with a base case, then test conformance treatments, spacing changes, or mobility control to see which lever increases overall sweep the most. Pair the sweep result with injection volumes, breakthrough timing, and unit costs to quantify value. If using the direct method, ensure swept and total volumes refer to the same region and time window. Exported CSV and PDF outputs support peer review, audit trails, and quick sharing with operations, subsurface, and economics teams during reviews.
It is the fraction of the reservoir volume contacted by the displacing fluid within the evaluated area and time. Higher sweep generally means better volumetric contact and improved recovery potential for a given injection effort.
High rates can amplify channeling through high‑perm paths, especially when mobility ratio exceeds 1 or vertical contrasts are strong. The flood front becomes unstable, so injected fluid reaches producers early without contacting the full reservoir.
Use it when you have or can estimate areal sweep, vertical sweep, and displacement efficiency. It is helpful for planning and comparing pattern designs, conformance options, and EOR fluids before full‑physics simulation.
Use it when you can estimate swept and total volumes from surveillance, tracers, simulation summaries, or interpreted flood maps. It provides a practical realized sweep for a defined region and time window.
Base it on coreflood results, analog projects, and simulation studies. Consider wettability, relative permeability, salinity, and miscibility. Update the value as field evidence changes, such as water cut trends and pressure response.
No. The estimator option is a bounded screening approximation to explore sensitivity quickly. For reserves and investment decisions, use calibrated simulation, history matching, and validated surveillance to constrain sweep components.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.