Amid the carefully choreographed political conventions last month, there was a spontaneous chant that will be familiar to anyone who watched the Republican festivities:
“Drill, baby, drill! Drill, baby, drill! Drill, baby, drill!”
For a party firmly associated with politically unpopular “Big Oil”, having this chant rise up—most vociferously from the ten-gallon hatted Texas and Oklahoma delegations—was not exactly what Republican leaders wanted in prime time. John McCain’s ambivalence was palpable when this chant briefly interrupted him during his acceptance speech.
Yet the chants of “Drill, Baby, Drill!” do have real populist appeal these days. It was not only
But will increased drilling really bring us cheaper oil? Will it bring us independence from foreign oil? Will it even bring us much more oil at all?
Common sense says it certainly won’t hurt domestic production to drill more. But the truly important question is this: Will more drilling really substantially improve our domestic energy supply? Common sense alone cannot answer this question rigorously. However, we can answer this critical question if we take a careful look at hard numbers from the oil patch.
There are two main classes of common oil rigs, when someone chants “Drill, baby, drill!” they are referring to rotary drill rigs. These are the workhorses used to punch new holes in the ground. Rotary drill rigs are used both to explore for new fields and also to enhance extraction from known fields. The other main type of rig, the “workover rig”, is primarily used for recasing, data logging, fracturing wells and the like. Workover rigs are also an essential part of oil production, but the focus of people on drilling is quite appropriate, because it is arguably the critical “rate-limiting” step in the search for new oil.
So the first step in determining the relationship between drilling activity and oil is to look at the big picture. The following graph shows United States drilling activity and United States oil production, going back as far as we can (1949) with the publicly available Baker Hughes drilling data.
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Looking Closer - Does More Drilling Activity Lead to Increased Oil Production?
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This is quite an extraordinary graph—and a sobering one. Unlike the loose overall historical relationship between domestic drilling and production, there is quite a tight relationship between drilling activity and oil production per rig. However, the relationship is precisely the last one you would want if you hope that drilling will solve our nation’s energy problems. The relationship shows that more active drill rigs translates quantitatively into less oil per rig. Even worse, as the red data and fitted curve show, this law of diminishing returns has gotten both worse, and statistically tighter, recently, including during the increase in drilling over the last decade.
The relationship is a power law, and the little negative exponent is the critical bit. The fact that it is negative, and that its magnitude is greater than one, ends up being very important. This fact is easier to see on a logarithmic graph, which “takes all the curves out” of a relationship like this, and linearizes it:
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With everything straightened out this way, the relationship becomes very clear. The little exponent in the untransformed data is now just the slope that you (hopefully) remember from high school math class. As you can see, this slope is -1.16 for the data before 1990. For the most recent years the line is both lower and more steeply negative, with the slope now nearly -1.30 and, furthermore, the relationship is statistically even more robust as of late—the earlier R2 of 0.91 is good, but the R2 of 0.95 for the most recent data means that 95% of the variation is explained by the relationship, which is very strong indeed.
This strong quantitative relationship between drilling and oil production has a sobering upshot. Since 1949 the overall pattern has been this: the harder we look for oil and the more we drill, the harder it gets to find. And during the last 17 years, with the most current technology and under the most recent economic conditions, this relationship has only gotten worse. The fact that the recent [red] data are lower means that recently we are finding less oil per working drill rig. The fact that the slope has become more steeply negative means that as we look harder for oil in the
One Proviso – Time Delays From Drilling to Production
Some clever readers may have noticed that I have simplified things a bit by ignoring the time delay between drilling and production in some of this analysis. Drilling proponents tend to underemphasize this delay, because they want the public to think that current drilling will bring oil online very quickly. It turns out that empirically, the best-fitting time delay between drilling and production is 4-6 years. This delay is fairly apparent just by looking again at the graph of
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For example, as the up arrows indicate, there was a five-year lag from the drilling nadir in 1971 and the production trough in 1976. And, as the down arrows indicate, there was a slightly shorter four-year lag between the enormous spike in drilling that peaked in 1981 and the following anemic secondary peak of oil production in 1985.
The Pollyannas out there might conclude that the slight shortening of the two lags with time might be because improved technology and increased efficiency have shortened the lag from exploration to extraction. I have heard many oil lobbyists make this claim when they try to downplay the lag between drilling and production. However, if you believe this, then the fact that despite a three-fold increase in drilling from 1999 to 2008, our domestic production continues to decline, is just that much more sobering.
I have done same the same analyses accounting for the time delay. The basic picture is entirely the same. The graphs tell the same story, with the slopes of the power law relationship negative and steeper than -1. (I’ll explain the implications of these slopes in the next section.) So, even accounting for the time delay between drilling and production, the conclusions are identical: the data do not support the hope that even a huge increase in drilling will do anything but, at best, slightly stem the overall rate of decline of our domestic oil production. Hope for a substantial increase is just that, hope, and it is blind hope that is blind to the data and to history.
[Anyone undaunted by the additional complication of accounting for the time delay can find my discussion of the relationship of future oil production and current drilling activity here.
More Straws in Increasingly Smaller Cups
The overall quantitative picture for
Actually, it’s worse than that: if it were only that bad the slopes in the graphs would be -1, and they are actually steeper than that. This is a bit counterintuitive, because what’s actually happening is rather complicated. Some drilling activity really is just putting another hole into the same old reserves. But drilling certainly does find new, previously untapped, resources, too. The problem, as Ken Deffeyes has pointed out in his book Hubbert’s Peak, is that all our new technology, and the recent increase of drilling activity, is mostly going into smaller and smaller discoveries. Our domestic oil supplies are pretty well picked over, and the “low-hanging fruit” remaining—the shallowest, lightest, most-permeable, and largest reserves of domestic oil—are few and far between.
The fact that the slopes of all the power laws are more steeply negative than -1 can be illustrated by a short parable. You’re on a first date in high school, and your date orders a chocolate malted right as you both slide into your booth. When the malted arrives you find that you’re really hungry and it looks really good. You’re tempted to just pop another straw into her shake and suck as hard as you can. But, no, you don’t really know her that well and, besides, you don’t want to look cheap. So when the waitress swings by you order a malted yourself.
That’s where the
Diminishing Returns of Oil, But Not Of Money, in the Oil Patch
Upon a little reflection, anyone who did not entirely sleep through their introductory economics class should be able to make sense of this. With a nonrenewable resource, of course one will reach a point of sharply diminishing returns.
Does this mean the oil industry is finished? Not at all. There is good money to be made in drilling for a long time. As prices go up, oil drillers and producers can make very good money on the diminishing resources. The scarcity value can make up for the fundamental scarcity for a very long time. That is, of course, the economic reason why drilling activity has recently increased despite the diminishing return of oil production: the price is higher.
For example, say you think ANWR is likely to be opened to oil companies, and you think significant oil reserves will be found. Because even the largest likely finds there are unlikely to significantly lower world oil prices (even the most optimistic daily production estimates are OPEC rounding error), precisely for that reason, there is a lot of money to be made. Likely beneficiaries of such an event include many of the majors, especially current
Similarly, if you think previously untapped offshore waters are likely to be opened, offshore specialists like Transocean (RIG) and Diamond Offshore (DO) are likely to benefit, long term. Also, because in an over-the-hill region it takes that much more drilling to produce the same amount of oil, drillers and equipment makers are likely to be busy. A company like Baker Hughes (BHI) will find it easy to increase its top line, and a basket like the Oil Service Holders (OIH) is likely to be a good long-term investment. With $100-a-barrel oil, a little goes a long way, when it comes to making money.
The parts of our economy most vulnerable to the domestic oil decline are not the oil companies themselves, but are things like airlines, Hummers, and jet skis—the consumers, not the producers—which will be in trouble long before the drilling industry winds down (like now, for instance).
But the hard facts do have a very important strategic implication for the
Given the diminishing returns on domestic oil (in energy terms, if not in terms of profits) I believe that developing alternative energy is our nation’s only real option to significantly improve our domestic energy production and strategic energy independence. For this reason, I think that baskets of alternative energy stocks, despite their inherent risk and volatility, are likely to be good long-term bets. The best way for most individual investors to invest in this young and volatile industry is through relatively diversified ETFs like the PowerShares WilderHill Clean Energy ETF (PBW), Progressive Energy ETF (PUW), Cleantech ETF (PZD), or the Market Vectors Global Alternative Energy ETF (GEX).
Strategic Implications of the Increased Drilling’s Inability to Solve our Energy Problems
The data show that the sentiments behind “Drill, Baby, Drill!” do not translate into a rational or effective national energy policy. In fact, aggressively developing our nation’s late stage oil reserves is arguably precisely against our long-term national interest. The data are clear: ramping up domestic drilling will at best only slightly slow the rate of decrease of our domestic oil production, but it will rapidly exhaust our remaining precious domestic oil reserves. And the faster we use up the little oil we have left, the quicker OPEC will be the only one at the table with any chips left. Strategically, this is a loser’s strategy.
Increased drilling is not the basis of a reasonable strategic energy policy, it is simply the chant of special interests who want to make money for themselves from our nation’s limited oil resources. I am sure that many drilling proponents genuinely would like to believe that increased drilling will solve our energy dependency, but they are simply wrong. The data are shockingly clear.
Being skeptical about our ability to drill our way out of energy dependency is often portrayed by oil lobbyists as an inherently politically position—a position that only environmentalists with ulterior motives would take. But the data I have analyzed are oil industry data and the conclusions are unequivocal. Though some of my quantitative techniques are novel, I am certainly not alone in my general conclusions.
Similar logic led some smart veterans of the oil industry, men like T. Boone Pickens and Ken Deffeyes, to see the writing on the wall some time ago. And it is a welcome development that, recently, more conservatives have come to understand the reality about oil. Not long ago, an article by former CIA Director R. James Woolsey and the brilliant Anne Korin argued forcefully that we are not in a position to drill our way out of dependence on foreign oil. They made this argument in the National Review, which is hardly an environmentalist hotbed.
So “Drill, Baby, Drill!” may have a nice ring to it, but Woolsey and Korin put it nicely in their National Review piece: “Speechwriters’ tropes shouldn’t be taken as serious policy proposals. Geology will not cooperate in any such fantasy.”
Disclosure: The author currently (September 2008) has long positions in PBW, XTO, XEC, COP, and SU in the energy sector.