Water Injection for Secondary Recovery
Water injection has proved to be one of the most economical methods for reservoir management. The technology can be valuable in helping maintain reservoir pressure, enhancing production of hydrocarbon reserves, and reducing the environmental impact through reinjection of treated and filtered produced water.
One of the most efficient methods of enhancing heavy oil recovery is water injection. In heavy oil recovery, Halliburton's temporary water injection system provides operators with a cost-effective means of quickly analyzing the potential benefits of using water injection to manage a specific reservoir and enhance overall productivity.
In injection wells, the success of a treatment is measured by the incremental oil recovered from offset producers. Sweep efficiency can be improved by controlling the injection profile in the reservoir. Solutions like Halliburton’s CrystalSeal® service—which features crystallized super absorbent copolymer that is a water-swellable material—have been successfully used to treat fractures that result in water breakthrough to the producing wells. It is a unique technology in that the injection well is treated rather than the producing well. Halliburton's WaterWeb® service uses relative permeability modifier technology to modify injection profiles by diverting fluid from high permeability to lower permeability layers.
In production wells, the success of the treatment is generally measured by reduction of the well’s water production and increase of hydrocarbon production. Halliburton has developed water-based polymer systems and sealants which have successfully limited the flow of injected and formation water into the producing wellbore.
Halliburton’s water injection service uses a temporary water injection system to provide operators with a powerful tool to help in these key activities:
- Analyzing reservoirs
- Performing test water floods
- Providing early production water injection
- Providing temporary water injection during shutdown activities
- Determining injection profiles
- Designing drilling patterns
- Determining the reservoirs response to water influx before capital is invested in the design and installation of a permanent facility
- Early start of water flood helps prevent reservoir depletion from the first day of production
- Allows early production when full permanent facilities are not commissioned
- Access to one of the world's largest pump fleets
- Exact injection characteristics can be determined before final design of permanent injection package
- Continued injection during outage of permanent injection packages