Unconventional natural gas market — Broader market segment that includes CBM, shale gas, and tight gas.
The unconventional natural gas market has transformed the global energy landscape over the last two decades. It refers to natural gas that is trapped within low-permeability rock formations, making it difficult to extract with traditional drilling methods. The most prominent types of unconventional gas are shale gas, tight gas, and coal bed methane (CBM). These resources were once considered technologically and economically inaccessible, but thanks to a series of groundbreaking innovations, they have become a dominant force in the global energy mix. This multi-billion-dollar market has fundamentally changed the economics of energy, providing a new layer of energy security and a vital "bridge fuel" in the transition to a lower-carbon future.
What Makes Natural Gas "Unconventional"?
The distinction between conventional and unconventional gas lies in its geological formation.
Conventional Gas: This is found in highly permeable rock layers, where the gas can flow easily to a well. Extraction is relatively straightforward, and the process is well-understood.
Unconventional Gas: This is trapped in formations with low permeability. The gas molecules are either tightly bound to the rock or distributed in tiny, disconnected pores. This requires a different set of technologies to release the gas and enable it to flow to the surface.
The shift to unconventional gas has unlocked vast resources that were previously unrecoverable.
Key Drivers of Market Growth
The explosive growth of the unconventional natural gas market is a direct result of two key factors:
Technological Innovation: The most important drivers are horizontal drilling and hydraulic fracturing ("fracking").
Horizontal Drilling: This technique allows a well to be drilled horizontally through a gas-rich formation for thousands of feet. This gives the well access to a much larger surface area of the resource than a traditional vertical well, drastically increasing the amount of gas that can be extracted from a single site.
Hydraulic Fracturing: This involves injecting a high-pressure mixture of water, sand, and chemicals into the wellbore to create small fissures in the rock. The sand holds these fractures open, creating pathways that allow the trapped gas to flow to the wellbore.
Rising Global Energy Demand: As the world's population grows and developing economies expand, the demand for clean, reliable energy is continuously increasing. Natural gas is viewed as a preferred fuel for electricity generation and industrial processes, ensuring a robust market for both conventional and unconventional sources.