In the last decade the extraction of natural gas from underground reservoirs has increased. Natural gas supplies 24% of the United States energy demand and is only expected to grow. Shale gas is natural gas that is found trapped in shale. Shale is sedimentary rocks that consist of clay minerals that have low permeability. Natural gas that is found in shale is buried in fractures below ground and must be extracted by hydraulic fracturing, also known as fracking [10]. One of the most recognized sites for the extraction of natural gas by fracking has been at the Barnett shale in the last decade. The Barnett shale is a region that extends west of Fort Worth, Texas to the Permian Basin and has been known to extend as far south into Mexico. The Barnett shale is a complex system of fractures in which the region has seen new developments in fracking to extract the natural gas from the ground [11].
In order to extract shale gas a well is dug into the fracture and fracturing fluid is placed in the well. Fracturing fluid consist mostly of water with chemicals that act as a friction reducer, sc...
There are a number of points at which Fox talks about how fracture fluid contains a mix of over 596 chemicals and how they are undisclosed because they are considered proprietary. Not only do individual states mandate the full public disclosure of fluid additives, but the federal government does as well, and the Occupational Safety and Health Administration (OSHA) requires that this information be kept at all well sites (Energy In Depth). Since then, it has been proven that fracture fluid is comprised almost entirely of water and sand, and typically containing less than one percent of an average of 12 components, most of which can be found around the house. Additionally, oil and gas is not the only use of fracturing, as it has also been used to access sources of water and geothermal
Then gallons of water mixed with "frak fluid" and proppants continuously until the target area can't take all the constant pressure and eventually breaks. Thus cracking open areas in a well filled with natural gas. The cracks are held open with the proppants. Marcellus Shale formations are located around the northeastern side of the United States. This rock is said to be known to hold a great deal of amount of natural gas, as much as 500 trillion cubic feet. Only an estimated amount of 50 trillion cubic feet is all that can be recovered from the Marcellus
In today's global economy, energy is one of the most crucial and sought after commodities. Who supplies it and how much they supply determines how much influence they have over other countries as well as the global economy. This is why hydraulic fracturing is currently such an important and controversial topic in the United States. Hydraulic fracturing, more commonly known as "fracking" or hydrofracturing, is the process of using pressurized liquids to fracture rocks and release hydrocarbons such as shale gas, which burns more efficiently than coal. This booming process of energy production provides a much needed economic boost, creating jobs and providing gas energy for Americans.
Gas in shale formations are“low in permeability,” making it very tedious to extract, but with the increase in technological knowledge in fracking and horizontally drilling into shale beds, the vast reserves of natural gas resource could be extracted (4). Fracking is a large industrial operation that boost the “productivity of a oil or gas well” (5). It is a process by which, under very high pressure, a mixture of water, chemicals, and sand, are pumped into shale formations that causes fractures in the rocks to open wider or create new fractures that would allow otherwise trapped oil and gas to flow into the wells (6).
Marcellus Shale drilling causes a problem because it involves the use of hundreds of deadly chemicals. Over three hundred chemicals are used in the Marcellus Shale drilling process (Environmental). According to Howells, author of the article “Don’t Frack with Our Water!,” these chemicals are especially dangerous because the companies that use them will not tell the public what specific chemicals are being used. However, through studies of the chemicals, some of them can be identified. Some of the chemicals in the fracking fluid and wastewater have been identified as carcinogens. Many of the other chemicals have been found to be harmful to humans (Environmental). According to Griswold, author of the article “The Fracturing of Pennsylvania,” wastewater is a combination of different chemicals that come from the process of fracking. Not only does this wastewater contain chemicals that were originally used in the drilling, but it also contains harmful substances that come from the earth like salts and other compounds (Griswold).
It is a known fact Pennsylvania is greatly impacted by the Marcellus Shale. The Marcellus Shale is a layer of black shale located under the Appalachian basin from Prehistoric times. Natural gas and oil are being extracted from this layer for their increasing economic value, with natural gas having a worth of $10 for every thousand cubic feet of it. Furthermore, improved technology such as “hydraulic fracturing” and “horizontal wells” has made Marcellus drilling more efficient and has increased the implementation of the drilling as a source of economic opportunity for not only drilling companies but for the whole state of Pennsylvania (“Marcellus Shale”). An important part of this Marcellus activity is that “most drilling is occurring in rural areas” according to Joseph Morris, a poll analyzer from Mercyhurst College (Begos, Kevin. “Gas”). Amid the economic opportunity, farmers in these areas are resistant to signing over their farmland to drilling companies. Bradford County farmer Carol French, who wrote an editorial in The Patriot News, stated, “Has anyone considered how these gas developments and industrial uses on farmland will impact agriculture production for years to come if a farmer does not have the necessary means or information to negotiate protection measures?” She fears that drilling will ruin rural property and thus unnecessarily change or hurt farmers’ economic way of life (French). However, because of the vital economic benefits that Marcellus Shale drilling has for Pennsylvania, farmers in rural areas of the state should choose to allow drilling on their property.
The amount of water required and the different chemical additives used in the frac fluid is what poses a threat to the safety, health and welfare of the public. Hydraulic fracturing uses concoction of slush water, sand and chemicals combined with pressure to stimulate to either create or expand cracks in the shale. One of the main concerns is the large amount of fresh water used and lost in todays fracturing techniques. Certain fracturing techniques can use to 8 millions gallons of water, either freshwater or treated produced water. This freshwater makes up about 98% to 99% of the total volume of the slush (fracfocus.org). After the frac is done the w...
Every resource on our planet is limited. This is not surprising information as humans have known this since the beginning of existence. Eventually, oil and other resources will no longer be viable sources of energy because they will be depleted. The simple answer to this inevitable issue is hydraulic fracturing. It is currently a controversial means of finding energy and was argued both ways by Josh Fox in his film Gasland as well as Phelim McAleer in his documentary FrackNation. Hydraulic fracturing, better known as “fracking”, is a safe and efficient way to acquire the copious amounts of energy needed to power the earth.
Environmental and socioeconomic debate over an alternative method of extracting natural gas thousands of feet below the surface using horizontal drilling and hydraulic “fracking” has risen in last twenty years. Fracking is the technique of drilling deep wells under high pressure with sand, water and a variety of chemicals to crack open rocks to release natural gas (hydrogen carbons) and oil from shale or coal bed methane deposits. Townships in Colorado like Lafayette and Fort Collins, voted on a moratorium to ban fracking within city limits. Environmental organizations like the Clean Water Action and Sierra Club claim that that fracking causes environmental degradation, health issues and impacts negatively on communities and their infrastructure. Whereas organizations like the Colorado Oil and Gas Association (COGA), Halliburton and other oil and gas industry and construction groups, and some local, state and federal politicians, claim that fracking is a safe method of onshore drilling. By burning natural gas which is considered a clean fuel reduces the amount of greenhouse gases that coal does as well as lower carbon energy use in the future. Fracking decrease dependence on foreign oil and gas, improves ability to generate electricity and heat home cheaply. Fracking supports local economies and provides much needed jobs (energyfromshale.org).
Before one can see the devastating effects of fracking, one must first understand how fracking works. As previously stated, the main intent of hydro-fracking is to access and harvest natural gas that lies below the surface of the Earth. Having formed over 400 million years ago by the collision of tectonic plates (Marsa 3), the Marcellus Shale plays host to a gold mine of natural gas, which is currently at the center of the fracking debate in the Northeastern region of the United States. Unfortunately, access...
Shale gas is a kind of unconventional nature gas, which is trapped or gathered in the dark shale or carbon rock. The rock layer has low permeability and low porosity, which means that the best way to get this recourse is fracturing to enhance connectivity and porosity. The shale gas reservoirs are mainly located in North America, Central Asia, China, Latin America, Middle East, North Africa and Russia and other countries and regions. The United State and Canada are only two countries, which have significant shale gas production.
Janise Miescke 5/6/2017 Assignment 3 When Money Speaks Louder than Obligation Texas has always been one to hold the belief ‘everything is bigger in Texas’.
Natural gas extraction and consumption has risen over the past thirty years. Also known as hydraulic fracturing or fracking, a tremendous amount of uproar is being made in the environmental and political communities. Natural gas use is a great source of energy worldwide, only in America have we had a gold rush affect when it comes to extraction. Natural gas provides less dependence on foreign oil, less need for coal plants, and a more affordable energy source worldwide. There are many advantages to using natural gas but the way in which it is being extracted has caused many people to become sick. The detrimental environmental impacts caused by hydraulic fracturing continue to rise. Not to mention the political pull on big corporations and water quality standards. Currently in the Marcellus shale in Pennsylvania and the Barnett shale in Texas, the air and water quality have diminished over the past years since drilling sites ran rampant. Natural gas is natural in terms of how it came to be, but not natural in how they extract it and the problems it is causing everyone involved. To make aware the dangers of hydraulic fracturing, environmental impacts, water quality and air emissions, must be considered.
The United States relies on imports for about forty percent of its crude oil, which is the lowest rate of dependency since 1991 according to the U.S Energy Information Administration. Today our country is trying to keep on track in becoming less and less dependent. When it comes to the topic of the future ways the United States will get its fuel, most of us readily agree that the United States should become more independent by using natural gas that is already here on our land. Where this argument usually ends, however, is on the question of the consequences drilling for natural gas brings. Whereas some are convinced drilling is safe, others maintain that it is actually in fact dangerous. Hydraulic fracturing or "fracking", the terms for drilling for natural gas, is dangerous to our public health and to the environment because of the water contamination it causes. Therefore, it is not something that should become a project for alternative fuel used by the United States.
One of the biggest natural resources used in fracking is water. On average, around one to eight million gallons of water are used on a fracture job. There are also around 500,000 active fracture sites around the world and each site can be fractured around 18 times. This means that roughly 72 trill...