Hydraulic fracturing, commonly called fracking, is the process of pumping fluid at high pressure into a well to crack open rock formations and release trapped oil and gas. It's the technology that unlocked massive reserves in formations like the Bakken, Permian Basin, and Marcellus Shale, and it's directly responsible for the royalty checks many mineral owners receive today.

Why It's Necessary

Oil and gas exist in tiny pore spaces within rock. In conventional reservoirs (like traditional Oklahoma and Kansas wells), the rock is porous and permeable enough that oil and gas can flow naturally to the wellbore. These wells can produce without fracturing.

In tight rock formations like shale, the permeability is extremely low. The oil and gas are there, but they can't flow through the rock on their own. Hydraulic fracturing creates artificial cracks (fractures) that connect the pore spaces to the wellbore, giving the hydrocarbons a path to flow.

Without fracking, most shale wells would produce little or nothing.

How It Works

After a well is drilled and cased, the completion team fractures the formation in stages:

Perforating. Small explosive charges punch holes through the steel casing and cement into the rock at targeted intervals. Perforations are typically made in clusters spaced 20 to 30 feet apart within each stage.

Pumping. A mixture of water and sand makes up the vast majority of the fluid used to fracture a well, with a small percentage of chemical additives. The fluid is pumped down the well at extremely high pressure, exceeding the rock's fracture strength and cracking open the formation.

Propping. The sand or ceramic proppant fills the new fractures and holds them open after the pumping stops. Without proppant, the fractures would close under the weight of the rock above.

Stage isolation. In a horizontal well, the lateral is divided into stages (typically 15 to 80 or more per well). Each stage is fractured individually using the "plug-and-perf" method: a plug isolates the completed stage, then the crew perforates and fractures the next section.

A single horizontal well completion can use 1.5 to 16 million gallons of water. Research has found that water use per well increased significantly between 2011 and 2016 as lateral lengths increased, with the magnitude varying widely by basin.

What the Mineral Owner Sees

As a royalty owner, you don't participate in or pay for the fracturing process (unless you hold a working interest). The cost of completion is borne by the operator and the working interest owners.

What you do see is the result: production. A properly fractured shale well can produce hundreds of barrels of oil per day initially, declining over time as the fractures lose effectiveness. Your royalty checks reflect the production volumes that the fracturing made possible.

Environmental Considerations

Hydraulic fracturing has been the subject of significant public debate. Concerns include water usage, potential groundwater contamination, disposal of produced water, and induced seismicity (earthquakes related to wastewater injection wells). These are real issues that state regulators address through permitting requirements, casing standards, setback distances, and disposal well regulations.

As a mineral owner, these issues may affect drilling activity in your area. Regulatory changes can slow or accelerate development, which in turn affects lease offers and royalty income.

The Bigger Picture

Hydraulic fracturing transformed the U.S. energy industry. Formations that were considered unproductive 20 years ago now produce millions of barrels of oil and billions of cubic feet of gas daily. For mineral owners in shale-rich areas, fracking is the reason their interests have value.

Understanding the process helps you make sense of the numbers on your check stub: why initial production is high, why wells decline over time, and why completion costs are so significant that operators need to be confident in a formation before drilling.