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Your Position: Home - Wood Pellets - How Does Hydraulic Fracturing Work?

How Does Hydraulic Fracturing Work?

Author: Ingrid

Jun. 03, 2024

AnYiCheng Product Page

How Does Hydraulic Fracturing Work?

1. What is hydraulic fracturing?

Hydraulic fracturing, also known as fracking, is a method used to extract natural gas or oil from deep underground rock formations. It involves injecting a mixture of water, sand, and chemicals at high pressure into the rock, creating fractures that allow the gas or oil to flow more freely to the surface.

2. How is hydraulic fracturing carried out?

The process begins by drilling a vertical well deep into the rock formation. Once the vertical well is in place, a horizontal well is drilled to increase the contact area with the rock. Then, a perforating tool is used to create small holes in the well casing through which a fracturing fluid is pumped into the rock at high pressure. This fluid creates fractures in the rock, allowing the oil or gas to flow into the well and up to the surface.

3. What is the purpose of the water, sand, and chemicals in the fracturing fluid?

The water in the fracturing fluid serves as a carrier for the sand and chemicals while also creating pressure within the well to crack the rock. The sand, known as proppant, holds open the fractures created in the rock, allowing the oil or gas to flow more freely. The chemicals in the fluid serve various purposes, such as reducing friction, preventing bacterial growth, and dissolving minerals in the rock.

4. What happens to the wastewater produced during hydraulic fracturing?

After the fracturing process is complete, the wastewater produced, known as flowback, returns to the surface along with the oil or gas. This wastewater is typically stored in tanks or pits before being treated and disposed of according to regulations. Some of the water can be recycled and reused in future fracturing operations, reducing the overall water usage of the process.Overall, hydraulic fracturing is a complex process that allows for the extraction of natural gas and oil from deep underground rock formations by creating fractures in the rock using a mixture of water, sand, and chemicals pumped at high pressure into the well. The extracted resources can then be brought to the surface for further processing and use.

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