Injection System Design Process - Injection Only
The injection process we are going to consider is for injection only.
Recirculation systems where groundwater is extracted and reinjected can be very useful in some cases.
However, construction and operating costs are often higher for recirculation systems.
More importantly for this tool, the design of these systems is more complicated and generally not amenable to the ‘standardized' approach incorporated into the design tool.
As a consequence, the design tool is only applicable to injection only systems.
In the design tool, you first select a general layout.
This can be either a grid approach or a barrier approach.
The treatment zone dimensions are determined.
A trial injection well spacing is selected.
Oil and water injection volumes per well are calculated to achieve a certain contact efficiency.
Based on the amount of oil injected and site conditions, a reinjection frequency is calculated.
Then the tool estimates capital and life-cycle costs.
This overall process is then repeated to evaluate the effect of well spacing on cost.