Rep Bartlett of Maryland gave this testimony before congress on March 14, 2005. Read the whole thing here.
...the 1940s and the 1950s when a scientist by the name of M. King Hubbert, a geologist, was working for the Shell Oil Company. He was watching the discovery and the exploitation and final exhaustion of individual oil fields. He noticed that every oil field followed a very typical pattern. It was a little slow getting the oil out at first, and then it came very quickly and reached a maximum, and then it tailed off as it became more difficult to get the oil out of the ground.
This followed a bell curve. Here is one of those bell curves. Now, bell curves are very familiar in science, and in life, for that matter. If we look at people and how tall they are, we will have a few people down around 4 1/2 or 5 feet and some up to 7 1/2 feet; but the big mass fall in the middle, clustered around 5 1/2 to 6 feet.
Looking at a yield of corn, a few farmers may get 50 bushels per acre, some may get 300, but the big mass today it is somewhere around 200 bushels per acre for corn.
Hubbert noticed when the bell curve reached its peak, about half of the oil had been exhausted from the field. Being a scientist, he theorized if you added up a lot of little bell curves, you would get one big bell curve, and if he could know the amount of reserves of oil in the United States, and he was doing this in the 1940s and early 1950s, and could project how much more might be found, he could then predict when the United States would peak in its oil production.
Doing this analysis, he concluded that we would peak in our oil production in 1970. This curve is what is known as Hubbert’s Curve. The peak of the curve is what is known as Hubbert’s Peak. Sometimes this is called the ``great rollover’’ because when you get to the top, you roll over and start down the other side. It is frequently called ``peak oil.’’ So peak oil for the United States occurred in 1970, and it is true that every year since then we have pumped less oil and found less oil. The big blue squares here are the actual and Members see they deviated a little from the theoretical as M. King Hubbert predicted, but not all that much.
At the bottom, see the difference the big field in Alaska made, and see what that made in the down slope, that never increased production in our country. It just meant that we were not going down quite as fast. You can see that here on the curve. Notice that the Alaska oil production was not the typical bell curve. It should have been, but a couple of things meant it could not be. One was it could not flow at all until we had a 4-foot pipeline. So the fields were developed and they were waiting; then we got the pipeline on board, and it was filled with oil and oil started to flow, and Members see the rapid increase here. It could not flow any faster than through that 4-foot pipe, and so it levels off at the top. We have pumped probably three-fourths of the oil in Prudhoe Bay.
Many people would like to open up ANWR. ANWR has considerably less oil than Prudhoe Bay, so the contribution will be significantly less. I want to note on this chart we also have the red curve, which is the theoretical curve for the former Soviet Union. It is a nice bell curve, peaking a little higher, they have more reserves than we do, and later because we entered the industrial age with vigor before the Soviet Union was quite there. Notice what happened when they came apart; notice how precipitously it fell here. After they got things organized, the fall stopped and now they are producing more oil. As a matter of fact, we might see a little upsurge in this; but the general trend is still going to be down.
On the next chart, and we have here the same Hubbert Curve, but the abscissa is a little too long and the ordinate a little too compressed, so it is not the sharp peak that we saw before. That is the curve we saw before. It shows the Texas component, and it shows the rest of the United States; and it also shows some natural gas liquids. We learned how to extract those a little later. So if you were plotting that as a bell curve, it would peak about here. It is little and then it is much, and then it tails off.
This is the contribution of Alaska, and you can see this not going to be our salvation to pump ANWR because ANWR contains probably not even half as much as Prudhoe Bay. And notice the small contribution that Alaska made. And that is not a bell curve for the reason I mentioned before because we had to develop the fields and they waited for the pipeline, and then it would surge through the pipeline when it was developed. So you do not see the tail getting greater and tailing off.
This is gulf oil. Remember the hullabaloo about the big finds of gulf oil that were going to solve our problem? That is what it did. There never was a moment in time between the big Alaska oil find and all of the pumping discovery and pumping in the gulf, there never was a moment in time when it decreased the fall in our country. The peak occurred, as you see here, about 1970.
The red curve here shows the actual discovery of oil. Notice that that peaked. There was a big find here that distorted the curve a little but if you rounded that off, you would have the typical bell curve. It started somewhere back here off the chart, then it peaks, and then it is downhill and it tails off. These are the discoveries. The last find there is simply an extrapolation. We have no idea where it is going.
We are, by the way, very good at finding oil now. We use 3D seismic detection techniques. The world has drilled, I think, about 5 million oil wells and I think we have drilled about 3 million of them in this country, so we have a pretty good idea of where oil is.
We held a couple of hearings and had the world experts in. Surprisingly from the most pessimistic to the most optimistic, there was not much deviation in what the estimate is as to what the known reserves are out there. It is about 1,000 gigabarrels. That sounds like an awful lot of oil. But when you divide into that the amount of oil which we use, about 20 million barrels a day, and the amount of oil the rest of the world uses, about 60 million barrels a day, as a matter of fact, the total now is a bit over the 80 million that those two add up to. About 83 1/2 , I think. If you divide that into the 1,000 gigabarrels, you come out at about 40 years of oil remaining in the world. That is pretty good. Because up until the Carter years, during the Carter years, in every decade we used as much oil as had been used in all of previous history. Let me repeat that, because that is startling. In every decade, we used as much oil as had been used in all of previous history. The reason for that, of course, was that we were on the upward side of this bell curve. The bell curve for usage, only part of it is shown on this chart. That is the green one down here, the bell curve for usage. Notice that we are out here now about 2005. Where is it going? The Energy Information Agency says that we are going to keep on using more oil. This green line just going up and up and up is a projection of the Energy Information Agency. But that cannot be true. That cannot be true for a couple of reasons. We peaked in our discovery of oil way back here in the late sixties, about 1970. In our country it peaked much earlier than that, by the way. But the world is following several years behind us. And the area under this red curve must be the same as the area under the green curve. You cannot pump any more oil than you have found, quite obviously. If you have not found it, you cannot pump it. If you were to extend this on out where they have extended their green line, even if it turned down right there at the end of that green line, the area under the green curve is going to be very much larger than the area under the red curve. That just cannot be. We will see in some subsequent charts that we probably have reached peak oil.
Let me mention that M. King Hubbert looked at the world situation. He was joined by another scientist, Colin Campbell, who is still alive, an American citizen who lives in Scotland. Using M. King Hubbert’s predictive techniques, oil was predicted to reach a maximum in about 1995, without perturbations. But there were some perturbations. One of the perturbations was 1973, the Arab oil embargo. Other perturbations were the oil price shocks and a worldwide recession that reduced the demand for oil. And so the peak that might have occurred in 1995 will occur later. How much later? That is what we are looking at this evening. There is a lot of evidence that suggests that if not now, then very quickly we should see world production of oil peak.
What are the consequences? What are the consequences of this depletion? The remaining oil is harder to get. It requires greater energy investment, resulting in a lower return on energy invested. That is the energy-profit ratio, which is decreasing. When we started out, you put in one unit of energy and you could get 30 out. Then that fell off, and then we found a few more fields and we got really good at extracting oil with better techniques. It looked for a little while like it was going up, but look what happened. It falls off to where it would have come anyhow if this curve had simply gone down. This is an inevitable consequence of pumping a field.
Lower profits are not the only concern. When more energy is required to extract it than is contained in the recovered oil, that is, when this ratio is less than 1, notice, we are over there at about 1984, we have got to get now another 20 years, I am not quite sure where we are now when you plot that day. We are getting very close to the unit it takes as much energy to get the oil out as you get out of the oil. It may still seem profitable from a monetary perspective, but when you are using more energy to get oil out of the ground than you are getting out of the oil, then clearly you need to leave it there when we reach that point. I mentioned the bump there was caused by a few more discoveries and particularly by increased efficiency in pumping the oil.
What is the current U.S. status? We have only 2 percent, between 2 and 3 percent, not really known for certain, but approximately 2 percent of the known reserves of oil. We use 25 percent of the world’s oil. By the way, we have about 8 percent of the world production. What that means is if we have only 2 percent of the reserves and 8 percent of the production, that means we are real good at pumping oil, does it not? That means we are pumping our reserves at roughly four times faster than the rest of the world. That means that this 2 percent will not stay 2 percent by and by because we are so good at pumping oil, we are going to be down to 1 percent of the known reserves in the world and we will still be using about 25 percent of the world’s oil. We are now importing about two-thirds of that. At the Arab oil embargo we imported about one-third of that. So we are now importing, relatively, two times more oil, actual quantity much more than that, but relatively about two times more oil.
Chart 6 shows us that more drilling just will not
solve the problem. This is a very interesting chart. This shows the difference between the amount of oil that you are finding and the amount of oil that you are pumping. Notice from 1960 on until about 1980, declining for sure, but every year except for one we found more oil than we pumped. The yellow line up here is drilling. You remember the Reagan administration and all the emphasis on drilling because we knew that we were approaching this flipover point where we were going to be pumping more oil than we found and so there was a rationale that if you just give them a profit motive and you have the right incentives, tax and regulatory incentives and so forth, they will go out and they will dig more wells and they will find more oil. Sure as heck they went out and dug more wells. But did they find any more oil? As a matter of fact, in 1982, more oil was used in looking for oil than the oil they found in 1982. Pretty consistently for every year after 1982, we have used more oil than we found. Today worldwide we are pumping at least six barrels of oil for every barrel that we find.
Chart 7 shows that worldwide discoveries are repeating the U.S. pattern. This is a rough bell curve. You find a big find of oil and it is going to make a spike. This is average for 5 years. If you look at it on a year for year, it is really up and down as you find big reservoirs of oil. But generally it starts low and it goes up and it comes down. It follows roughly a bell curve. I would not pay too much attention to the figures on the ordinate here, because the area under this curve must equal just a little bit over 2,000 gigabarrels of oil. If I visually sum the area under this curve, it is going to equal something more, not frightfully more but something more than 2,000 gigabarrels of oil which from other sources we know ought to be the total amount of oil under the sun. Notice that we are tailing off to something very low. It is unlikely that we are going to find big additional finds in the future. Again, we are very good at that. We have dug about 5 million wells worldwide. We have done a whole lot more than that explorations with detonations and seismic and 3D and computers and we are very good at looking at the kind of geology where you might find oil. There is just no real expectation that there are going to be big additional fields of oil found out there. This dropoff in discovery is really in spite of very improved technology for finding oil.
Chart 8. This is a very interesting chart. It has nothing to do with time, because on the abscissa here, we have the number of wells that are drilled, the cumulative oil caps, and on the ordinate, we have the amount of oil that was found. For any relatively big field, here we are talking about 50 gigabarrels. Remember, there are about 2,000 gigabarrels worldwide, so this is a meaningful part of the world reserves of oil. We see that that goes up and up and then it tails off. You cannot find what is not there. No matter how many more wells you drill, you are not going to find oil that is not there. The same pattern should be apparent on a world scale.
Chart 9. This is a very interesting chart. It is a little too busy, but let me try to explain what is there. The oil companies for reasons of pricing and regulations and so forth have had the habit through the years of underreporting initially how much oil they found. Then later when it was appropriate to their license to produce more oil, they would report additional oil. They never found any additional oil, they simply reported oil they had found previously. By the way, you may have noted that three times in the last roughly 3 weeks, oil companies have admitted that their estimates of the reserves were exaggerated and have downscaled the reserves that they said were there. If you took the original reporting of the reserves, you might be able to construct a curve, a straight line curve which said we are just getting more and more. But if you backdated that to the actual discoveries, then you get this curve. This curve is asymtoting at a bit over 2,000 gigabarrels, which is about what the world’s experts say had been there. We have now pumped about half of that. We have about 1,000 gigabarrels remaining.
