For millennia mankind relied upon energy sources that were diffuse. We burned wood, which grows in energy-concentrating organisms called trees. We could only gather the wood if it had fallen, or if we could use our stone-based tools to break wood apart. Some folks were fortunate in that their environment held a form of turf that would burn, one we call peat. And once we domesticated animals, we discovered that we could burn their feces, if we could stomach the smell. But that was it. We could not leverage our power by harnessing energy sources to supplant muscle power.
Over time, we mastered the manufacture of metals. This made it easier to harvest wood, and made it easier to use it for heating and cooking. But only after we recognized as a species that we could use energy to create steam, and then harness the steam to do work, only then did we gain the possibility to advance society through the use of machines. Since that time, we have worked diligently to use ever more concentrated sources of energy in order to do our bidding. Coal was the first concentrated source of energy used to leverage man’s muscles, and entire regions rich in coal soon were honeycombed with tunnels where coal had been extracted.
Coal has its own problems, though. It is dirty, dusty, and burning it causes a sulfur stink to cling to the landscape where it is used. It also bears a human toil in the death and disabilities of those who work to mine coal. Oil has long been used by man for lighting, but the sources of oil were either vegetable in nature, or for a short time, based on blubber. This type of oil is a concentrated source of energy, but it is gathered by diffuse energy sources. It was only when man discovered how to extract virgin pools of petroleum oil from below the surface of the earth that it became possible to create a liquid fuel that could propel individual transportation vehicles. Once the miracles of fuel oil and gasoline were unleashed, the automobile age was enabled.
Concentrated sources of energy were viewed as inexhaustible in the earth, and man grew to believe it was his birthright to exploit these sources in perpetuity. Indeed, man even harnessed the second most concentrated source of energy known, that of atomic fission, and controlled it to convert mass into electricity. That source of energy creates its own problems, with long-lived radioactive waste, and with the narrow line separating safe operation from catastrophe. Still, the energy future for man looked bright.
But after centuries of exploiting concentrated energy sources, the problems resulting from their use have grown exponentially. In Appalachia, we no longer delve under the ground for rich veins of organic rock. The best veins are gone. Instead, we blow the top off of mountainsides in order to free up the 2′ and 3′ veins of coal that were left in bygone geological times. Excess dirt and rock is pushed over the sides of the former mountain, leaving behind a scar on the land where ground cover is grown to regenerate the soil that is long gone.
Standard oil wells have gone dry in many regions. The decline in oil production in the US, coupled with the expanding use of oil, led to over dependence upon foreign oil sources, particularly from the Arabian Gulf. In the 1970’s, this dependence led to the use of oil as a political weapon, as the Arab countries withheld oil from the US to protest Israel’s seizure of Arab lands after a failed Arab war on Israel. It was only with the advent of enhanced oil recovery through fracking that the long decline in US oil production was reversed.
But even with the impressive increase in oil and natural gas generated through fracking, there are other issues that need to be dealt with. This does not concern fracking wastes or earthquakes from waste fluid injection. No, it has to do with the depletion rates of wells drilled using fracking. Whereas a conventional petroleum reservoir has a depletion rate measured over decades, with fracking wells, the rate of production from a fracking well may decrease by over 50% in the first year. The depletion rate of a fracking well shows an exponential decrease in production, and the economic lifetime of a well may be less than 10 years. Thus it is necessary to keep drilling, inserting pipe into the ground, and dealing with all of the fluid handling for any oil or gas fracking well.
The net result is that it takes more and more energy to extract fossil fuels through fracking than the old method of production. Fewer and fewer BTU’s of useful energy is available from the well once all of the energy inputs of the well are subtracted. Subtract the energy used to make the steel pipe, the energy used to move all of the fluids and sand for fracking, the energy used to separate the fossil fuel from the comingled water, and the energy costs for pipelines and compressor stations for natural gas. One begins to come up against thermodynamic limits for obtaining useful energy out of fossil fuel extraction. For a link that you may find useful in pursuing this further, please check out http://peakoil.com/geology This website has many different perspectives on oil – either we are swimming in it, or the last big discoveries have already been made.
Note that this discussion has not mentioned carbon dioxide’s role as a greenhouse gas. Any solution to humanity’s energy issues needs to take greenhouse gases into account, but the underlying demise of the oil economy may happen despite all of the efforts to keep the oil flowing. No, what is needed is that we must realize that we need to go back to the older methods of harvesting diffuse energy sources. And all of the diffuse energy sources we have are tied to the sun. Whether it is solar electricity, or wind power, or biomaterials generating hydrocarbon liquids, all of them use the sun as the ultimate energy source. If we are to avoid a crisis over the next decade due to depletion of fossil fuel sources, we must commit to harvesting diffuse sources of solar energy to keep our society running.
Much of the blowback against global warming refers to the “globalists” imposing their control agenda upon the brave and valiant people who fly the fossil fuel flag. They are insistent that it is their right to live as their (most recent) forefathers lived, and keep buying the biggest SUV or pickup that they may ever need to have, simply because oil is cheap, and will always stay that way. Those people will be the first to be blindsided when oil prices keep climbing inexorably, year after year, and they will not understand that even though more oil is being harvested, only a small fraction of that oil is truly available to keep their profligate lifestyle afloat. If we truly do enter a world where it takes more energy to extract a barrel of oil than that oil will release during combustion, then the end for our life of ease will come, and we will retreat back into the life of the past, where all of our energy was consumed just in order to survive.