What is Oil and gas: Definition and 11 Discussions

A fossil fuel is a fuel formed by natural processes, such as anaerobic decomposition of buried dead organisms, containing organic molecules originating in ancient photosynthesis that release energy in combustion.
Such organisms and their resulting fossil fuels typically have an age of millions of years, and sometimes more than 650 million years.
Fossil fuels contain high percentages of carbon and include petroleum, coal, and natural gas. Commonly used derivatives of fossil fuels include kerosene and propane.
Fossil fuels range from volatile materials with low carbon-to-hydrogen ratios (like methane), to liquids (like petroleum), to nonvolatile materials composed of almost pure carbon, like anthracite coal.
Methane can be found in hydrocarbon fields alone, associated with oil, or in the form of methane clathrates.
As of 2018, the world's main primary energy sources consisted of petroleum (34%), coal (27%), and natural gas (24%), amounting to an 85% share for fossil fuels in primary energy consumption in the world.
Non-fossil sources included nuclear (4.4%), hydroelectric (6.8%), and other renewables (4.0%, including geothermal, solar, tidal, wind, wood, and waste).
The share of renewables (including traditional biomass) in the world's total final energy consumption was 18% in 2018.Most air pollution deaths are due to fossil fuel combustion products: it is estimated that this pollution costs over 3% of global GDP, and that fossil fuel phase-out would save 3.6 million lives each year.The use of fossil fuels causes serious environmental damage.
The burning of fossil fuels produces around 35 billion tonnes (35 gigatonnes) of carbon dioxide (CO2) per year.
Natural processes can only absorb a small part of that amount, so there is a net increase of many billion tonnes of atmospheric carbon dioxide per year.
CO2 is a greenhouse gas that increases radiative forcing and contributes to global warming and ocean acidification.
A global movement towards the generation of low-carbon sustainable energy is underway to help reduce global greenhouse gas emissions. But in 2019 fossil fuels were subsidized $320 billion.

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  1. S

    Need Help with Free Body Diagram of Oil & Gas Packer Tool

    Has anyone created a thread on Free Body Diagram on assembly having many components ? For example a Casing having premium threads in both end and a set packer within it. What would be the FBD equations to determine various forces and reaction forces
  2. astroman707

    Do petroleum engineers struggle with ethical dilemmas?

    Petroleum engineers are smart, educated individuals. Therefore, I’d assume they’re well aware of the environmental impacts caused by the work they do. Do they ever struggle with any ethical issues regarding the matter? Is it the money? Is it the possibility of making oil drilling processes more...
  3. S

    What Are SG Units? Oil & Gas Industry Explained

    Hi all, I am currently trying to understand a paper which presents a model for sand production and wellbore collapse in the oil&gas industry. The paper refers to stresses and pressure in "s.g." instead of Pa or other pressure/stress units... values tend to range from 0.4 s.g. for cohesive rock...
  4. J

    Engineering Transition from Physics to Engineering?

    Hi there! I'm currently pursuing a Bachelors of Science in Physics with minors in both Applied Math & Chemistry and am considering a career in engineering. Now, before all of you engineers jump my case about physics isn't engineering or whatever, please be mindful I'm here for help about my...
  5. M

    Oil and Gas Engineering

    Hi, I had come to a university hoping to study Petroleum Engineering but they said what they teach is Oil and Gas Engineering. Really I do not know more about the differences if there is because petroleum implies oil and gas. But, there should be a reason why it is called that way and not PE...
  6. D

    Oil and Gas Industry - Seeking Advice

    I am coming close (~1.5 years remaining) to finishing my undergraduate degrees (chemical/process engineering and finance), and have pretty much decided that I will work in the energy industry. I live in Australia, so there are definitely plenty of opportunities at the moment for me to find work...
  7. C

    Physics What the oil and gas job market says for a new geophysics grad.

    Hi everyone, does anyone know what the typical job market is like for recent graduates in the geophysics field. I mean given the price of oil and the global financial crisis does one even stand a chance. I like to hear from some of you who are in the geoscience field as well. I know Alberta...
  8. S

    Thermo fluid or oil and gas scope?

    hi...i'm a mechanical student..this semester I'm taking thesis subject and i must find a topic about these two of my fav scope before this week..thermo fluid and in oil and gas industry...and i just want to know which one of these is better for me to concentrate on my thesis? but first, i search...
  9. Shackleford

    Physics Getting into oil and gas with a physics degree with no geophysics courses?

    Is that possible? UH offers a physics degree BS with geophysics specialization. I looked at doing that a while back but decided against it. With just a BS Physics, could I get into oil and gas/energy? If so, what kinds of jobs would I be doing? I live outside of Houston, btw.
  10. B

    Canadian Oil & Gas Jobs: Summer Employment in Tarsands

    Im toying with the idea of trying to get a summer job in the tarsands and I was wondering if anyone could give me the names of some companies I could enquire to. I'm in the third year of a Masters in Mechanical Engineering in Scotland, if that helps at all. Thanks!
  11. Astronuc

    Oil and gas exploration - the cost

    http://www7.nationalgeographic.com/ngm/0507/feature5/index.html Demand for natural gas and the resulting land-use pressures are pitting America's Old West against the New. http://www7.nationalgeographic.com/ngm/0507/sights_n_sounds/index.html...