|
LF-ERW
Low-frequency electric resistance weld, LF-ERW is Electric resistance welding, Electric resistance welded (ERW) pipe manufactured by cold-forming a sheet of steel into a cylindrical shape. Current is then passed between the two edges of the steel to heat the steel to a point at which the edges are forced together to form a bond without the use of welding filler material. Initially this manufacturing process used low frequency A.C. current to heat the edges. This low frequency process was used from the 1920s until 1970. In 1970, the low frequency process was superseded by a high frequency ERW process which produced a higher quality weld. Over time, the welds of low frequency ERW pipe was found to be susceptible to selective seam corrosion, hook cracks, and inadequate bonding of the seams, so low frequency ERW is no longer used to manufacture pipe. The high frequency process is still being used to manufacture pipe for use in new pipeline construction. The Poplar Pipeline was built in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electric Resistance Welding
Electric resistance welding (ERW) is a welding process where metal parts in contact are permanently joined by heating them with an electric current, melting the metal at the joint. Electric resistance welding is widely used, for example, in manufacture of steel pipe and in assembly of bodies for automobiles. The electric current can be supplied to electrodes that also apply clamping pressure, or may be induced by an external magnetic field. The electric resistance welding process can be further classified by the geometry of the weld and the method of applying pressure to the joint: spot welding, seam welding, flash welding, projection welding, for example. Some factors influencing heat or welding temperatures are the proportions of the workpieces, the metal coating or the lack of coating, the electrode materials, electrode geometry, electrode pressing force, electrical current and length of welding time. Small pools of molten metal are formed at the point of most electrical resista ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2013 Mayflower Oil Spill
The 2013 Mayflower oil spill occurred on March 29, 2013, when the Pegasus Pipeline, owned by ExxonMobil and carrying Canadian Wabasca heavy crude from the Athabasca oil sands, ruptured in Mayflower, Arkansas, about northwest of Little Rock releasing about of oil. Approximately United States Dept. of Justice (April 22, 2015)ExxonMobil to Pay $5 Million to Settle U.S. and Arkansas Claims for 2013 Mayflower Oil Spill Retrieved on 2022-12-12. of oil and water mix was recovered. Twenty-two homes were evacuated.Kristen Hays and Matthew Robinson (March 31, 2013Exxon cleans up Arkansas oil spill; Keystone plan assailed ''Reuters''. Retrieved on: 2013-04-07. The United States Environmental Protection Agency (EPA) classified the leak as a ''major spill''. Exxon's Pegasus pipeline carries of crude a distance of from Patoka, Illinois to Nederland, Texas. On April 2, 2013, PHMSA, the federal pipeline regulator, issued a corrective action order until repairs have been completed and a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pipeline Transport
Pipeline transport is the long-distance transportation of a liquid or gas through a system of pipes—a pipeline—typically to a market area for consumption. The latest data from 2014 gives a total of slightly less than of pipeline in 120 countries of the world. The United States had 65%, Russia had 8%, and Canada had 3%, thus 76% of all pipeline were in these three countries. ''Pipeline and Gas Journals worldwide survey figures indicate that of pipelines are planned and under construction. Of these, represent projects in the planning and design phase; reflect pipelines in various stages of construction. Liquids and gases are transported in pipelines, and any chemically stable substance can be sent through a pipeline. Pipelines exist for the transport of crude and refined petroleum, fuels – such as oil, natural gas and biofuels – and other fluids including sewage, slurry, water, beer, hot water or steam for shorter distances. Pipelines are useful for transporting water ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yellowstone River
The Yellowstone River is a tributary of the Missouri River, approximately long, in the Western United States. Considered the principal tributary of upper Missouri, via its own tributaries it drains an area with headwaters across the mountains and Great Plains, high plains of southern Montana and northern Wyoming, and stretching east from the Rocky Mountains in the vicinity of Yellowstone National Park. It flows northeast to its confluence with the Missouri River on the North Dakota side of the border, about 25 miles west of present-day Williston, North Dakota, Williston. Yellowstone watershed The Yellowstone River watershed is a river basin spanning across Montana, with minor extensions into Wyoming and North Dakota, toward headwaters and terminus, respectively. The Yellowstone Basin watershed contains a system of rivers, including the Yellowstone River, and four tributary basins: the Clarks Fork Yellowstone, Wind River (Wyoming), Wind River and Bighorn River, Tongue River (Mon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bakken Formation
The Bakken Formation () is a rock unit from the Late Devonian to Early Mississippian age occupying about of the subsurface of the Williston Basin, underlying parts of Montana, North Dakota, Saskatchewan and Manitoba. The formation was initially described by geologist J. W. Nordquist in 1953. The formation is entirely in the subsurface, and has no surface outcrop. It is named after Henry O. Bakken (1901–1982), a farmer in Tioga, North Dakota, who owned the land where the formation was initially discovered while drilling for oil. Besides the Bakken formation being a widespread prolific source rock for oil when thermally mature, significant producible oil reserves exist within the rock unit itself. Oil was first discovered within the Bakken in 1951, but past efforts to produce it have faced technical difficulties. In April 2008, a USGS report estimated the amount of recoverable oil using technology readily available at the end of 2007 within the Bakken Formation at 3.0 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ExxonMobil
ExxonMobil Corporation (commonly shortened to Exxon) is an American multinational oil and gas corporation headquartered in Irving, Texas. It is the largest direct descendant of John D. Rockefeller's Standard Oil, and was formed on November 30, 1999, by the merger of Exxon and Mobil, both of which are used as retail brands, alongside Esso, for fueling stations and downstream products today. The company is vertically integrated across the entire oil and gas industry, and within it is also a chemicals division which produces plastic, synthetic rubber, and other chemical products. ExxonMobil is incorporated in New Jersey. ExxonMobil's earliest corporate ancestor was Vacuum Oil Company, though Standard Oil is its largest ancestor prior to its breakup. The entity today known as ExxonMobil grew out of the Standard Oil Company of New Jersey (or Jersey Standard for short), the corporate entity which effectively controlled all of Standard Oil prior to its breakup. Jersey Standard grew a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mayflower, Arkansas
Mayflower is a city in Faulkner County, Arkansas, United States. The population was 2,234 at the 2010 census, up from 1,631 at the 2000 census. History Mayflower is a small town located along Interstate 40 southeast of Conway (Faulkner County) and northwest of Little Rock (Pulaski County). Located on the southwestern edge of Lake Conway, Mayflower is particularly known for its fishing. Like many of the smaller towns of Faulkner County, such as Vilonia and Greenbrier, Mayflower offers a rural lifestyle within a short drive of Conway and Little Rock, where many of its residents commute to work. It was incorporated as a town in Arkansas on March 6, 1928. The area’s earliest European settlers were Loyalists, known then as Tories, who moved westward in order to flee the Revolutionary War. Families such as the Flannagins and Massengills arrived around 1778 and settled near the mouth of Palarm Creek. However, local tribes of Native Americans had inhabited this region for centur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lake Conway
Lake Conway is a lake in Arkansas. Lake Conway is the largest lake ever created by a state wildlife commission and the first to be created by the Arkansas Game and Fish Commission. Lake Conway is located directly east of Mayflower, Arkansas, and just a few miles southeast of Conway, Arkansas. Lake Conway is home to many major sportfish such as bass, bluegill, crappie, blue catfish, and flathead catfish. Lake Conway's average depth is 4.5 ft and at its deepest point 16 ft. Lake Conway was constructed in 1948.The lake was created by damming Palarm Creek. Creating Lake Conway Residents of Faulkner County were aggressive to have the construction of Lake Conway done. Over three dozen court cases had to be won, and over fifty thousand dollars to buy the land to construct the lake. The land was purchased at four dollars an acre to make Lake Conway. It was considered poor land due to being mostly swamp, and useless to farm on. The Arkansas Game and Fish Commission was intrigue ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diluted Bitumen
Dilbit (diluted bitumen) is a bitumen diluted with one or more lighter petroleum products, typically natural-gas condensates such as naphtha. Diluting bitumen makes it much easier to transport, for example in pipelines. Per the Alberta Oil Sands Bitumen Valuation Methodology, "Dilbit Blends" means "Blends made from heavy crudes and/or bitumens and a diluent, usually natural-gas condensate, for the purpose of meeting pipeline viscosity and density specifications, where the density of the diluent included in the blend is less than 800 kg/m3." If the diluent density is greater than or equal to 800 kg/m3, the diluent is typically synthetic crude and accordingly the blend is called synbit. Reasons for dilution Bitumen and heavy oils are often produced from remote deposits such as the Athabasca oil sands in Alberta, Canada and the Orinoco tar sands in Venezuela. Before 1980, most produced bitumen was transported by truck, but trucking is seasonally restricted and relatively ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
