1.3 Problems

1. Completion through horizontal wellbores and multistage hydraulic fracturing has dramatically impacted the production of oil and gas in the US. Answer the following questions:
   1. What was the percentage of tight/shale gas production with respect to total gas production in the US for 2000 and 2020 according to EIA “US dry natural gas production by type” (https://www.eia.gov/energyexplained/natural-gas/where-our-natural-gas-comes-from.php)?
   2. Out of shale gas for 2022, what percentage comes from TX/NM and what percentage comes from Marcellus Shale according to EIA “Monthly dry shale gas production” (https://www.eia.gov/energyexplained/natural-gas/where-our-natural-gas-comes-from.php)?
   3. What was the percentage of tight/shale oil production with respect to total oil production in the US for 2004 and 2019 according to EIA “Monthly US crude oil production (2004-2018)” (https://www.eia.gov/todayinenergy/detail.php?id=38372#)?
   4. Out of tight oil for 2023, what percentage comes from TX/NM according to EIA “US tight oil production” (https://www.eia.gov/energyexplained/oil-and-petroleum-products/where-our-oil-comes-from-in-depth.php)?
   5. How many times did tight oil production grow from 2023 to 2007 according to EIA “US tight oil production” (https://www.eia.gov/energyexplained/oil-and-petroleum-products/where-our-oil-comes-from-in-depth.php)?
2. What is the concept of “decarbonizing the fossil fuel energy industry”. What are the different types of CO$_2$ geological storage according to the target storage formation?
3. What is the heat flow rate of the Earth's molten core (provide answer in TeraWatts)? What is an enhanced geothermal system?

Note: you may use this (https://apps.automeris.io/wpd/) web app to digitize plots.