Drilling Past Rocket Science
You’ve heard it countless times: “It’s not rocket science”! But rocket science has nothing on geo-science. In fact, drilling for oil and natural gas is arguably more complicated that space exploration. We’re not kidding. In the Marcellus/Utica formation a company recently drilled the world’s longest well… nearly six miles! It’s an astonishing feat that would have seemed inconceivable not long ago. And if that isn’t impressive enough, consider the amazing process of hydraulically fracturing these exceptionally long lateral wells. While astronauts get all the glory, the men and women who produce oil and natural gas humbly do the work that makes everything in our lives possible, including space exploration.
With all due respect to space explorers, the people doing the most complex engineering feats these days are exploring for oil and natural gas. But you don’t know that because the mainstream media that fawns over Space X couldn’t care less about the engineering wonders that happen right here on earth.
You’re skeptical, I know. But stop for a moment and consider something truly astonishing. Drilling engineers are now putting pipes in the ground that extend for… wait for it… nearly six miles. How amazing is that? It’s a technical marvel that’s actually good for all of us in a number of ways. But, first, let’s consider the technical accomplishment.
The world’s longest well was recently drilled in the Marcellus-Utica shale formation in eastern Ohio. The drill bit bored two miles down. Then, at what’s called the “kick off point,” engineers turned the bit and extended the hole horizontally for another 3.8 miles. The total length, 30,746 feet.
Of course, these wells were hydraulically fractured. Nearly all wells are fraced these days. Contrary to what you’ve been told from the mainstream narrators, this is a good thing. And it’s safe.
The wells are typically drilled at least a mile deep, and often much deeper. Ground water is only 300 to 1,000 feet deep. So, there is a great distance, usually more than a mile, between the oil and gas resources and groundwater.
After a well is drilled, a pipe, called casing, is inserted into the hole. Then cement is pumped through the pipe and into the space between the casing and the well bore wall. That creates a double barrier between the oil and gas flowing to the surface and the earth surrounding it. In the vertical section of the well there are typically three to four additional strings of casing and cement to help protect ground water. The long laterals being drilled are incredible, but the fracing process itself is pretty amazing.
Once the casing and cement are fully set, engineers insert a plug at the end of the pipe. They use a perforating gun to punch holes in the casing.
They then pump water, sand, and a small amount of chemicals into the pipe. The hydraulic pressure fractures the formation about 100 feet in each direction. Sand is used to keep the cracks open. The chemicals lubricate the mixture and prevent bacteria from growing.
The procedure of plugging, perforating, and fracturing happens repeatedly across the horizontal length of the well. Once that is done, the plugs are drilled out, and oil and gas can begin flowing.
Alright, so it’s all a technical wonder, but why should you care?
Well, you care about the environment and your energy bills, don’t you? A big benefit of much longer lateral wells is that they produce more oil and natural gas on one well pad than that of several wells not long ago. That reduces the environmental impact.
On top of that, multiple wells can be drilled from the same pad, producing even more energy with less impact. This efficiency means the oil and gas can be produced at a lower cost, which translates into savings on gasoline, diesel, home heating and cooking, electricity, and the countless products made from petrochemicals. And, don’t forget all the high paying jobs that come from American-produced energy.
We appreciate space exploration as much as any other geek. But it doesn’t produce the energy that runs the world, and it’s arguably not as complicated.
In other words, it may be rocket science, but it’s not geoscience.
For the Clear Energy Alliance, I’m Mark Mathis. Power On.
Marathon Oil Corporation animation of Hydraulic Fracturing
SMEnergy Company video on Hydraulic Fracturing
Oil & Gas Reporter – Well drilled nearly 31,000 feet
Environmental Protection Agency determines hydraulic fracturing is safe (During Obama Admin)
Hydraulic Fracturing is Safe – American Petroleum Institute
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