Hydraulic fracturing- a rocky plunge into shale/ unlocking world’s deep energy resources

Hydraulic fracturing is a process for unlocking energy resources reserved deep within the crust. The process stimulates the flow of oil and natural gas through the rock formations. The process includes a high-pressure fracturing fluid composed of 98% to 99.5% of the water and sand. Some chemical additives and proppants including ceramic pellets or other small incompressible particles are also used. The variability of additives, both in their purpose and chemical composition, suggests that a large number of different chemicals may be used in hydraulic fracturing fluids across the United States. The process adds pathways for the flow of oil and natural gas into the wellbore. The process exhibits extraction suitability for unconventional energy resources. The process, in addition reduces the methane content from the mining reserves which poses an imminent danger in the form of explosion for the environment and living kind.




Moreover, hydraulic fracturing is also used in other applications such as tunnel and dam construction, enhanced geothermal energy, carbon sequestration, groundwater remediation, block cave mining, rock burst mitigation, and water well development. The process of hydraulic fracturing extracts oil and natural gas through two steps which are: the oil and gas production well and the newly-created fracture network. Oil and gas production wells are designed and constructed to move fluids to and from the targeted rock formation without leaking and to prevent fluid movement along the outside of the well. The fracture network created during hydraulic fracturing is the other primary pathway along which hydraulic fracturing fluids move. Fracture growth during hydraulic fracturing is complex and depends on the characteristics of the targeted rock formation and the characteristics of the hydraulic fracturing operation.

Hydraulic fracturing is directly related to the US shale industry being world leader in oil and natural gas production. It is one of the prominent methods for exploring underneath reserves of the country. North America constitutes more than 40% of total number of hydraulic fracturing spreads. Other countries are also exploring the deep oil content through the technology. Particularly, Middle East and North African countries are expanding the energy mining from oil sector to natural gas within the deep reserves with the support of hydraulic fracturing. The reason behind MENA region to explore reserves through hydraulic fracturing is the increase in the demand for natural gas from Asian countries such as China and India.

Duo taps the unconventional reserves

Unconventional resources are low permeability and porosity units bearing oil and natural gas. These reserves cannot be tapped through vertical well bore. Horizontal drilling exhibits the effective fracture of rocks lying deep in the earth. Thus, the combination of modern hydraulic fracturing with horizontal drilling reduces the size of the area to be drilled above the ground and convert the reserves into usable form through extraction process. The exploration of unconventional reserves through vertical drilling is tough due to hindrance of mammoth rocks in the crust while the horizontal drilling makes the edge over it. The combination supports the market players to explore the untapped geographical regions containing natural reserves. Thus, the unconventional reserves help to meet the growing energy demand of the world and with the US other potential countries of the world are developing the facilities for hydraulic fracturing process.

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