| Sumario: | Increased water demand for crop irrigation requires new water sources in the short term. One alternative may be unconventional ground water sources, such as produced waters that are pumped to the surface mixed with hydrocarbons in the process of drilling when extracted gas or oil. Such produced waters are confined to unproductive wells or used to maintain pressure in petroleum deposits. However, previous studies have highlighted the possibility of using these waters within the industrial sector as well as in the farming or forestry sectors. The objective of this review was to compile information about the origin, composition, actual and potential uses of produced waters from the oil industry, which might be useful in future research on this natural resource.
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