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  2. Exemptions for fracking under United States federal law

    en.wikipedia.org/wiki/Exemptions_for_fracking...

    Drilling an oil and gas well at a location or well pad site at which drilling has occurred previously within five (5) years prior to the date of spudding the well. 3. Drilling an oil or gas well within a developed field for which an approved land use plan or any environmental document prepared pursuant to NEPA analyzed such drilling as a ...

  3. Environmental impact of fracking - Wikipedia

    en.wikipedia.org/wiki/Environmental_impact_of_f...

    The increased earthquakes were said to be most likely caused by increased injection of gas-well wastewater into disposal wells. [14] The injection of waste water from oil and gas operations, including from hydraulic fracturing, into saltwater disposal wells may cause bigger low-magnitude tremors, being registered up to 3.3 (M w). [97]

  4. Fracking in the United States - Wikipedia

    en.wikipedia.org/wiki/Fracking_in_the_United_States

    Environmental Protection Agency illustration of the water cycle of hydraulic fracturing. Fracking in the United States began in 1949. [1] According to the Department of Energy (DOE), by 2013 at least two million oil and gas wells in the US had been hydraulically fractured, and that of new wells being drilled, up to 95% are hydraulically fractured.

  5. Produced water - Wikipedia

    en.wikipedia.org/wiki/Produced_water

    A shale gas well being drilled by a drilling rig in Pennsylvania. Produced water is a term used in the oil industry or geothermal industry to describe water that is produced as a byproduct during the extraction of oil and natural gas, [1] or used as a medium for heat extraction.

  6. Environmental impact of fracking in the United States

    en.wikipedia.org/wiki/Environmental_impact_of_f...

    Environmental impact of fracking in the United States has been an issue of public concern, and includes the contamination of ground and surface water, methane emissions, [1] air pollution, migration of gases and fracking chemicals and radionuclides to the surface, the potential mishandling of solid waste, drill cuttings, increased seismicity and associated effects on human and ecosystem health.

  7. Uses of radioactivity in oil and gas wells - Wikipedia

    en.wikipedia.org/wiki/Uses_of_radioactivity_in...

    The oil and gas industry in general uses unsealed radioactive solids (powder and granular forms), liquids and gases to investigate or trace the movement of materials. The most common use of these radiotracers is at the well head for the measurement of flow rate for various purposes.

  8. Are Florida’s sugar farms a greenhouse gas hot spot ... - AOL

    www.aol.com/florida-sugar-farms-greenhouse-gas...

    Raising sugar cane in the Everglades Agricultural Area requires that the water table be lowered to a point where the soils inevitably will be dry, and that will lead to oxidation, he said.

  9. Water injection (oil production) - Wikipedia

    en.wikipedia.org/wiki/Water_injection_(oil...

    Water injection wells may be located on- and offshore, to increase oil recovery from an existing reservoir. Normally only 30% of the oil in a reservoir can be extracted, but water injection increases the recovery (known as the recovery factor) and maintains the production rate of a reservoir over a longer period.

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