The Effect Of Sonic Logs On The Petroleum Industry And The Current Advances Made On Their Application

Hydraulic fracturing is also known as “fracking” is a technique which involves drilling down, then horizontally as far as 10,000 feet below the surface to release natural gasses stored in the sedimentary rock known as Shale. The channel is then encased with concrete or occasionally steel to allow millions of gallons of water to be injected into the wellbore. Most water used in fracking comes from surface water sources such as rivers, lakes, or other accessible bodies of water nearby. Not only is there water being funneled into the wellbore, but also a mixture of sand and other chemicals. When the high-pressure mixture is injected underground it fractures the Shale around the wellbore and creates fissures. The fissures are then held open with

The extraction of natural gas requires a borehole which is dug down to the deep shale formation. After the hole is dug, a steel pipe is inserted into the borehole where it is encased with cement on the outer perimeter of the pipe. A perforation gun is lowered into the cement-encased piping. Using an explosive, the perforation gun perforates the casing and puts initial fractures into the shale at targeted locations. The shale is fractured further by inserting fracking fluids, which consists of 98% water and sand, plus 2% proprietary fluids. The fracking fluids are pushed down into the wellbore and pressurized to 3000 psi causing the initial fracture to spread in the shale, along the shale natural fracture lines. The sand in the fracking fluids keeps the created fractures open which allows the gas from the shale pores to flow into the casing and then to the surface, where it is collected.

Paragraph 1: Fracking, also known as hydraulic fracturing, is a method designed to extract oil and gas from shale rock. According to Susan L. Brantley and Anna Meyendorff from the article, The Facts on Fracking, “The word fracking comes from the fracturing that occurs when the high-pressure water is injected into the rock. The process of fracking is accomplished by drilling into the earth where a mixture of high-pressure water is drilled into the rock causing the gas to be released.” The high-pressure water can have a mixture of materials such as water, sand, and different chemicals. The pressure of the water being injected is so high that it allows gas to burst out of the head of the well. The process can be achieved through two different ways, one being more common than another. One of the processes can be done vertically but the more common method is done horizontally. According to the New York Times, when the drilling is carried by horizontally, “New pathways can be used in the rock layer. Due to new pathways being created, more gas can be released,” (Marshall, 2015). Drillers can create mini-explosions in the wells to boost flow. How do mini-explosions not increase the probabilities of earthquakes? The horizontal drilling can allow millions of gallons of high-pressure water into the fractures of shale. Chemicals can be added to the high-pressure water for the purpose of dissolving minerals as well as inserting sand to open fractures made by the drillers and kill the

The value of the critical pressure coefficient, Cp*, according to local sonic conditions is calculated by:

During the mid 2000s hydraulic fracking was starting to grow because ‘It was a good way to meet energy needs.”(source 5). Hydraulic fracking has been said to release chemicals and pollute drinking water.

With the age of constant industrial and technological growth has come the necessity for not only cost effective and efficient methods for industry, but also the need for obtaining fuel for the machines that make the modern world possible. Oil has become as precious a commodity as gold, if not more so; its attainments constantly driving the world's largest businesses and governments across the world into action. Naturally, a "quick-fix" solution to this problem is constantly sought after by oil companies wishing to provide oil on a massive scale. One of these drilling methods is known as induced hydraulic fracturing (also known as fracking).

Morris, J., & Song, L. (2013, September 16). Study Delivers Good News, Bad News on

Feeds the LaVale wells at Red Hill and many local wells. If drilling were to occur in

Paragraph 1: Hydraulic fracking is a hot topic across the state of Texas. There are debates whether fracking is the actual cause of the sudden earthquakes in Texas. Fracking is an intense process where natural gas is extracted deep from within the earth. Drillers from oil and gas companies use a horizontal drilling technique that is initiated as a vertical casing and then makes a 90 degree turn. This allows the well to follow the natural fractures of shale rock. A fracking fluid mixed of water, sand, and chemicals is injected with high-pressure down the well. The fluid produces several small cracks in the shale, creating a pathway for the gas to enter and flow out of the well casing. Each well can

Hydraulic fracking is vertical well bores are drilled thousands of feet into the earth, through sediment layers, the water table, and shale rock formations in order to reach the oil and gas. The drilling is then angled horizontally, where a cement casing is installed and will serve as a conduit for the massive volume of water, fracking fluid, chemicals and sand needed to fracture the rock and shale. In some cases, prior to the injection of fluids, small explosives are used to open up the bedrock. The fractures allow the gas and oil to be removed from the formerly impervious rock formations. Although fracking has technically been in existence for decades, the scale and type of drilling now taking place, deep fracking, is a new form of drilling

Before starting the process of fracking the drilling site must be suitable. The site must be four to six acres, cleared from large equipment, and have plastic lines placed for drilling waste . In addition, their must be a water impoundment with about 4 million gallons of water that is collected and stored in order to be pumped into the well. This water is transferred by tanks, trucks, or plastic-lined ponds . Hydraulic fracturing processes begins by drilling a vertical well. The drilling goes through aquifers and dozens of geological layers before it reaches desired location of shale rocked believed to contain natural gas. The drill begins drilling horizontally and a production casing is then inserted into the borehole which is surrounded by cement to case it. Next, a perforating gun is fired to make the shale rock more penetrable. A mixture of water, sand, and various undisclosed chemicals are then pumped in at high pressure in order to fracture/break the shale for the gas to escape. After the fissures in the shale rock occur the natural gas is released through the fissures and is taken up the well to the surface. Last, the water byproduct, also referred to as flow back water or produced water is released and travels back to the surface. The gas that is collected is then processed, refined, and shipped to distributors

After scientists have tested the oil and the rocks, oil companies will begin drilling in the wells and rock samples will be brought to the surface. After the scientists have studied the rock samples from above ground and are convinced that they have found the right type of rock, companies begin drilling production wells. “When the wells first hit the reservoir, some of the oil begins coming to the surface immediately” (“Fossil Energy: How Fossil Fuels Were Formed,” n.d.). However, with today’s technology, oil companies are able to install special equipment to help the oil from spurting hundreds and hundreds of feet from the ground.

The Arizona State University effectively relays the information from a research done to evaluate the use of fracking techniques in relation to the Texas earthquakes experienced in May of 2012. The research done by Shirzaei, Ellworth, Tiampo, Gonzalez, and Manga was done using InSAR a satellite-based radar, to learn the relation between the uplifting of the earth’s surface from the injection of fracking fluids to the seismic hazards it may cause.

Black shale is relatively brittle making it easier for hydraulic fracturing to extract the oil and gas from its pores (King).

Hydraulic fracturing is a process used in nine out of 10 natural gas wells in the United States, where millions of gallons of water, sand and chemicals are pumped underground to break apart the rock and release the gas. Scientists are worried that the chemicals used in fracturing may pose a threat either underground or when waste fluids are handled and sometimes spilled on the surface. The natural gas industry defends hydraulic fracturing, better known as fracking, as safe and efficient. Thomas J. Pyle, president of the Institute for Energy Research, a pro-industry non-profit organization, claims fracking has been “a widely deployed as safe extraction technique,” dating back to 1949. What he doesn’t say is that until recently energy