Produced water treatment refers to the various methods used to deal with water encountered during oil and gas exploration. Petroleum sites usually contain
natural gas and oil along with highly saline water, sometimes in separate zones or sometimes even as a mixture. This water emerges when oil drilling
equipment taps into the reservoir.
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Produced water is considered as an industrial waste, since it is too saline to be used for drinking or agriculture. The conventional method of dealing with
produced water – simply letting it evaporate – is now banned, as it has severe repercussions on the wildlife in its surroundings. Thus, reinjection of
produced water back into oil wells has emerged as the perfect solution. Reinjection extends the lifespan of an oil well by forcing more oil into the
drilling zones and by balancing out the pressure created in the reservoir by the sudden removal of a large quantity of petroleum deposits.
Reinjection of produced water is becoming the standard rather than the outlier in the oil and gas industry. Out of the 201.4 billion barrels of produced
water produced in 2014, 34% were reinjected into oil wells. This figure is expected to rise steadily over the next few years. Some of the major reasons for
the growing trend of produced water reinjection are:
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As a result of these factors, offshore reinjection of produced water is expected to rise at a robust CAGR of 23% from 2014 to 2020. Onshore reinjection
will also grow at a notable CAGR during the same period. Produced water disposal will be the slowest-growing produced water treatment segment during the