by Bruce Wells | Apr 8, 2026 | Petroleum Pioneers
Oilfield discoveries at El Dorado and Smackover in the 1920s launched the Arkansas petroleum industry.
Arkansas oil wells of the 1920s created boom towns, established the state’s petroleum exploration and production industry, and boosted the career of a young wildcatter named Haroldson Lafayette Hunt.
The first Arkansas well that yielded “sufficient quantities of oil” was the Hunter No. 1 of April 16, 1920, in Ouachita County, according to the Arkansas Geological Survey. Natural gas was discovered a few days later in Union County by Constantine Oil and Refining Company.
Surrounded by 20 acres of woodlands, the Arkansas Museum of Natural Resources in the Smackover oilfield preserves the state’s petroleum history seven miles north of equally historic El Dorado.
A January 1921 well drilled in the same Union County field at El Dorado marked the true beginning of commercial oil production in Arkansas. When the Busey-Armstrong No. 1 well struck oil in 1921, the oilfield discovery soon catapulted the population of El Dorado from 4,000 to 25,000 people. The well, 15 miles north of the Louisiana border, was the state’s first commercial oil well.
“Twenty-two trains a day were soon running in and out of El Dorado,” noted the Arkansas Gazette. An excited state legislature announced plans for a special railway excursion for lawmakers to visit the oil well in Union County.
Meanwhile, Haroldson Lafayette “H.L.” Hunt arrived from Texas with $50. He joined the crowd of lease traders and speculators at the Garrett Hotel, where fortunes were being made — and lost. Hunt launched his start as an independent oil and natural gas producer during the El Dorado drilling boom.
Some locals said it was his expertise at the poker table that earned him enough to afford a one-half acre parcel lease where his Hunt-Pickering No. 1 well produced some oil but ultimately proved unprofitable.
Hunt persevered and within four years acquired substantial El Dorado and Smackover oilfield holdings. By 1925, he was a successful 36-year-old oilman with his wife Lyda and three young children living in a three-story El Dorado home. He would significantly add to his oilfield successes a decade later in Kilgore, Texas (learn more in East Texas Oilfield Discovery).
Giant Oilfield at El Dorado
Located on a hill a little over a mile southwest of El Dorado, the derrick was visible from the town, according to historians A.R. and R.B. Buckalew. They write that three “gassers” had been completed in the general vicinity but did not produce in commercial quantities.
There was no market for natural gas at the time, the authors explained in their 1974 book, The Discovery of Oil in South Arkansas, 1920-1924.
The Garrett Hotel, where H.L. Hunt checked in with 50 borrowed dollars and launched his long career as a successful independent oil producer.
Yet Dr. Samuel T. Busey was convinced “there was oil down there somewhere.”
The authors added, “Among those who gambled their savings with Busey at this time were Wong Hing, also called Charles Louis, a Chinese laundry man, and Ike Felsenthal, whose family had created a community in southeast Union County in earlier years.”
With no oil production nearby, investing in the “wildcat” well was a leap of faith. Chal Daniels, who was overseeing drilling operations for Busey, contributed the hefty sum of $1,000. On January 10, 1921, the well had been drilled to 2,233 feet and reached the Nacatoch Sand. A small crowd of onlookers and the drilling crew — after moving a safe distance away — watched and listened.
“The spectators, among them Dr. Busey, watched with an air of expectancy,” noted the historians. “Drilling had ceased and bailing operations had begun to try to bring in the well. At about 4:30 p.m., as the bailer was being lifted from its sixth trip into the deep hole, a rumble from deep in the well was heard.”
The rumbling grew in intensity, “shaking the derrick and the very ground on which it stood as if an earthquake were passing,” the authors report. “Suddenly, with a deafening roar, ‘a thick black column’ of gas and oil and water shot out of the well,” they added.
The gusher blew through the derrick and “bursts into a black mushroom” cloud against the January sky. The Busey No. 1 well produced 15,000,000 to 35,000,000 cubic feet of gas and from 3,000 to 10,000 barrels of oil and water a day.
Petroleum brings Prosperity
Thanks to the El Dorado discovery, the first Arkansas petroleum boom was on. By 1922, there were 900 producing wells in the state.
Civic leaders raised funds to preserve El Dorado’s historic downtown — and add an Oil Heritage Park at 101 East Main Street.
“Three months after the Busey well came in, work was underway on an amusement park located three blocks from the town that would include a swimming pool, picnic grounds, rides and concessions,” noted the Union County Sheriff’s Office. “Culture was not forgotten as an old cotton shed in the center of town near the railroad tracks was converted to an auditorium.”
The 68-square-mile field will lead U.S. oil output in 1925 — with production reaching 70 million barrels. “It was a scene never again to be equaled in El Dorado’s history, nor would the town and its people ever be the same again,” the authors concluded. “Union County’s dream of oil had come true.”
In 2002, El Dorado gathered 40 local artists to paint 55 oil drums donated by the local Murphy Oil Company. Preserving the town’s historic assets, including boom-era buildings, remains a major goal of the local group, Main Street El Dorado, which was the “2009 Great American Main Street Award Winner” of the National Trust Main Street Center.
Second Oil Boom: Discovery at Smackover
Prior to the January 1921 El Dorado discovery, the region’s economy relied almost exclusively on the cotton and timber industries “that thrived in the vast virgin forests of southern Arkansas.”
Petroleum wealth helped Smackover, Arkansas, incorporate in 1922.
Six months after the Busey-Armgstrong No. 1 well, another giant oilfield discovery 12 miles north will bring national attention — and lead to the incorporation of Smackover. A small agricultural and sawmill community with a population of 131, Smackover had been settled by French fur trappers in 1844. They called the area “Sumac-Couvert,” meaning covered with sumac or shumate bushes.
According to historian Don Lambert, by 1908 Sidney Umsted operated a large sawmill and logging venture two miles north of town. He believed that oil lay beneath the surface. “On July 1, 1922, Umsted’s wildcat well (Richardson No. 1) produced a gusher from a depth of 2,066 feet,” Lambert reported.
“Within six months, 1,000 wells had been drilled, with a success rate of ninety-two percent. The little town had increased from a mere ninety to 25,000, and its uncommon name would quickly attain national attention,” added Lambert.
Roughnecks photographed following the July 1, 1922, discovery of the Smackover (Richardson) field in Union County. Courtesy of the Southwest Arkansas Regional Archives.
The oil-producing area of the Smackover field covered more than 25,000 acres. By 1925, it had become the largest-producing oil site in the world. The field will produce 583 million barrels of oil by 2001.
Opened in 1986, the Arkansas Natural Resources Museum educates visitors in the heart of the historic Smackover oilfield. Exhibits explain how the Busey No. 1 well near El Dorado “blew in with a gusty fury” in January 1921.
The museum includes a five-acre Oilfield Park with operating examples of early and modern oil-producing technologies. They can be found one mile south of the once petroleum-rich town of Smackover, which has celebrated its petroleum heritage with an “Oil Town Festival” every June.
Abundant natural gas in the Fayetteville shale formation brought more drilling to Arkansas.
With more than 46,800 wells drilled between 1925 and 2023, about one-third of the 75 Arkansas counties have produced oil and/or natural gas, reported Mineralsanswers.com in July 2024.
Southern Arkansas also is considered among the most prolific lithium resources of its type in North America, according to ExxonMobil, which in 2023 acquired the rights to 120,000 gross acres of the Smackover formation.
Fayetteville Shale
Thanks to advances in drilling technologies combined with hydraulic fracturing, the Fayetteville Shale — a 50-mile-wide formation across central Arkansas — has added vast natural gas reserves while creating a new petroleum boom for the state.
Unlike traditional fields containing hydrocarbons in porous formations, shale holds natural gas in a fine-grained rock or “tight sands.” Until the 1990s, drilling in most shale formations was not considered profitable for production.
Surrounded by 20 acres of lush woodlands, the Arkansas Museum of Natural Resources collects and exhibits southern Arkansas petroleum — along with the history of brine drilling and the salt industry. It also has documented the social and economic histories that accompanied the 1920s oil boom.
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Recommended Reading: The Discovery of Oil in South Arkansas, 1920-1924 (1974); The Three Families of H. L. Hunt
(1989); Early Louisiana and Arkansas Oil: A Photographic History, 1901-1946
(1982); Giant Under the Hill: A History of the Spindletop Oil Discovery
(2008). Your Amazon purchase benefits the American Oil & Gas Historical Society. As an Amazon Associate, AOGHS earns a commission from qualifying purchases.
_______________________
The American Oil & Gas Historical Society (AOGHS) preserves U.S. petroleum history. Please become an AOGHS annual supporter and help maintain this energy education website and expand historical research. For more information, contact bawells@aoghs.org. © 2026 Bruce A. Wells. All rights reserved.
Citation Information – Article Title: “First Arkansas Oil Wells.” Authors: B.A. Wells and K.L. Wells. Website Name: American Oil & Gas Historical Society. URL: https://aoghs.org/petroleum-pioneers/arkansas-oil-and-gas-boom-towns. Last Updated: January 3, 2026. Original Published Date: April 21, 2013.
by Bruce Wells | Apr 6, 2026 | Petroleum Pioneers
Onlookers gathered for the 1897 “shooting” of the Nellie Johnstone oil well at Bartlesville in Indian Territory.
After securing rights to explore in the Cherokee Nation, a small group of businessmen drilled on the west bank of the Caney River and found oil on March 25, 1897, at a depth of about 1,300 feet. A few weeks later, Bartlesville residents gathered at the site to watch the “shooting” of the Nellie Johnstone No. 1, the future state of Oklahoma’s first commercial oil well.
Soon after the Civil War, America’s search for oil to refine into kerosene for lamps prompted entrepreneurs, speculators, and the new petroleum industry’s “wildcatters” to seek their fortunes on the great plains of the Indian Territory.
(more…)
by Bruce Wells | Apr 2, 2026 | Petroleum Pioneers
As drillers and speculators rushed to Spindletop Hill, the Texas Company was organized in 1902.
A series of oil and natural gas discoveries at Sour Lake, Texas — near the famous 1901 gusher at Beaumont — helped launch the major oil company Texaco.
Originally known as Sour Lake Springs because of sulfurous spring water popular for its healing properties, a series of oil discoveries brought wealth and new petroleum companies to Hardin County in southeastern Texas.
“A forest of oil well derricks at Sour Lake, Texas,” circa early1900s, courtesy the W.D. Hornaday Collection, Texas State Library and Archives Commission, Austin. Oil discoveries at the resort town northwest of the world-famous 1901 Spindletop gusher transformed the Texas Company into Texaco.
As the science of petroleum exploration and production evolved, some geologists predicted oil was trapped at a salt dome at Sour Lake, similar to that of Beaumont’s Spindletop Hill formation, which was producing massive amounts of oil.
According to Charles Warner in Texas Oil & Gas Since 1543, in November 1901 an exploratory well found “hot salt water impregnated with sulfur between 800 and 850 feet…and four oil sands about 10 feet thick at a depth of approximately 1,040 feet.”
Warner noted that the Sour Lake Springs field’s discovery well came four months later when a second attempt by the Great Western Company drilled “north of the old hotel building” in the vicinity of earlier shallow wells.
“This monument marks the site of the Texas Company’s first producing oil well.” The Fee No. 3 well flowed at 5,000 barrels of oil a day in 1903, launching the Texas Company into becoming Texaco.
“This well secured gusher production at a depth of approximately 683 feet on March 7, 1902,” Warner reported. “The well penetrated 40 feet of oil sand. The flow of oil was accompanied by a considerable amount of loose sand, and it was necessary to close the well in from time to time and bail out the sand, after which the well would respond with excellent flows.”
As more discoveries followed, Joseph “Buckskin Joe” Cullinan and Arnold Schlaet were among those who rushed to the area from their offices in Beaumont.
“Buckskin Joe” Cullinan
The most significant company that started during the Spindletop oil boom was The Texas Company, according to historian Elton Gish.
“Cullinan worked in the Pennsylvania oil industry and later went to Corsicana, Texas, about 1898 when oil was first discovered in that district, where he became the most prosperous operator in the field,” reported Gish in his “History of the Texas Company and Port Arthur Works Refinery.”
Cullinan formed the Petroleum Iron Works, building oil storage tanks in the Beaumont area — where he was introduced to Schlaet. “When the Spindletop boom came in January 1901, Mr. Cullinan decided to visit Beaumont,” Gish noted. Schlaet managed the oil business of two brothers, New York leather merchants.
Named after its New York City telegraph address, the Texaco brand became official in 1959. Postcard of a Texaco service station next to a cafe in Kingman, Arizona.
“Schlaet’s field superintendent, Charles Miller, traveled to Beaumont in 1901 to witness the Spindletop activity and met with Cullinan, whom he knew from the oil business in Pennsylvania. He liked Cullinan’s plans and asked Schlaet to join them in Beaumont.”
According to Texaco, Cullinan and Schlaet formed the Texas Company on April 7, 1902, by absorbing the Texas Fuel Company and inheriting its office in Beaumont. Texas Fuel had organized just one year earlier to purchase Spindletop oil, develop storage and transportation networks, and sell the oil to northern refineries.
By November 1902, the new Texas Company was establishing a new refinery in Port Arthur as well as 20 storage tanks, building its first marine vessel, and equipping an oil terminal to serve sugar plantations along the Mississippi River.
Fee No. 3 Discovery
The Texas Company struck oil at Sour Lake Springs in January 1903, “after gambling its future on the site’s drilling rights,” the company explained. “The discovery, during a heavy downpour near Sour Lake’s mineral springs, turned the company into a major oil producer overnight, validating the risk-taking insight of company co-founder J.S. Cullinan and the ability of driller Walter Sharp.”
A Texaco station was among the 2012 indoor exhibits featured at the National Route 66 Museum in Elk City, Oklahoma. Photo by Bruce Wells.
Their 1903 Hardin County discovery at Sour Lake Springs — the Fee No. 3 well — flowed at 5,000 barrels a day, securing the Texas Company’s success in petroleum exploration, production, transportation, and refining. Sharp founded the Sharp-Hughes Tool Company in 1908 with Howard Hughes Sr.
High oil production levels from the Sour Lake field and other successful wells in the Humble oilfield (1905) secured the company’s financial base, according to L. W. Kemp and Cherie Voris in the Handbook of Texas Online.
“In 1905 the Texas Company linked these two fields by pipelines to Port Arthur, ninety miles away, and built its first refinery there. That same year the company acquired an asphalt refinery at nearby Port Neches,” the authors noted.
“In 1908 the company completed the ambitious venture of a pipeline from the Glenn Pool, in the Indian Territory (now Oklahoma), to its Southeast Texas refineries,” added Kemp and Voris.
Telegraph Address: Texaco
As early as 1905, the Texas Company had established marketing facilities not only throughout the United States but also in Belgium, Luxembourg, and Panama.
The Texas Company registered “Texaco” as a trademark in 1909.
The telegraph address for the company’s New York office is “Texaco” — a name soon applied to its products. The company registered its first trademark, the original red star with a green capital letter “T” superimposed on it in 1909. The letter remained an essential component of the logo for decades.
In August 1926, the Texas Corporation incorporated in Delaware (from Texas) and by an exchange of shares acquired outstanding stock of The Texas Company, which was dissolved the next year.
The new corporation became the parent company of numerous “Texas Company” — Texaco — entities and other subsidiaries, according to Jim Hinds of Columbus, Indiana (see Histories of Indian Refining, Havoline, and Texaco). By 1928, Texaco operated more than 4,000 gasoline stations in 48 states. It already was a major oil company when it officially renamed itself Texaco in 1959.
1987 Bankruptcy
Texaco lost a 1985 court battle following its purchase of Getty Oil Company. In February 1987 a Texas court upheld the decision against Texaco for having initiated an illegal takeover of Getty Oil after Pennzoil had made a bid for the company. Texaco filed for bankruptcy in April 1987.
The companies settled their historic $10.3 billion legal battle for $3 billion when Pennzoil agreed to drop its demand for interest. The Los Angeles Times reported the compromise was vital for Texaco emerging from bankruptcy, a haven sought to stop Pennzoil from enforcing the largest court judgment ever awarded at the time.
On October 9, 2001, Chevron and Texaco agreed to a merger that created ChevronTexaco — renamed Chevron in 2005. Although the Sour Lake Springs oil boom was surpassed by other Texas discoveries, it has remained the birthplace of Texaco.
Learn more about southeastern Texas petroleum history in Spindletop creates Modern Petroleum Industry and Prophet of Spindletop.
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Recommended Reading: The Texaco Story, The First Fifty Years 1902 – 1952 by Texas Company (1952). Texaco’s Port Arthur Works, A Legacy of Spindletop and Sour Lake (2003); Giant Under the Hill: A History of the Spindletop Oil Discovery (2008). Your Amazon purchase benefits the American Oil & Gas Historical Society. As an Amazon Associate, AOGHS earns a commission from qualifying purchases.
_______________________
The American Oil & Gas Historical Society (AOGHS) preserves U.S. petroleum history. Please support AOGHS to help maintain this energy education website, a monthly email newsletter, This Week in Oil and Gas History News, and expand historical research. Contact bawells@aoghs.org. Copyright © 2026 Bruce A. Wells.
Citation Information – Article Title: “Sour Lake produces Texaco.” Authors: B.A. Wells and K.L. Wells. Website Name: American Oil & Gas Historical Society. URL: https://aoghs.org/petroleum-pioneers/sour-lake-produces-texaco. Last Updated: April 6, 2026. Original Published Date: April 5, 2014.
by Bruce Wells | Mar 29, 2026 | Petroleum Pioneers
Drilling of a remote wildcat well began in late 1950. The blizzard came in January.
Drillers of a remote wildcat well in Clarence Iverson’s wheat field northeast of Williston endured a North Dakota winter before finding oil on April 4, 1951. Their discovery launched the Williston Basin drilling boom.
At about one in the morning on April 4, after four months of hard drilling and with snow piled high from recent blizzards, the Clarence Iverson No. 1 well produced oil. Amerada Petroleum’s 1951 discovery — the first commercial oil well in North Dakota — would reveal a prolific petroleum basin stretching from North and South Dakota, Montana, and into Canada.
Dedicated in 1953, a granite marker commemorates the Clarence Iverson No. 1 well, which had two years earlier discovered the 134,000-square-mile Williston Basin on Iverson’s farm.
After decades of dry holes drilled from one corner of North Dakota to the other, new technologies and true tool-pusher grit brought the state’s first oil discovery in 1951.
Although this wildcat drilling attempt had been regarded with great skepticism, within two months of the strike, 30 million acres were under lease. A 2008 article in the Bismarck Tribune, quoted Sid Anderson, the former state geologist, who was a college student at the University of North Dakota when oil was discovered.
Cliff Iverson stands by a monument on the family farm in Tioga, North Dakota, in August 2008. The monument marks the April 4, 1951, oil discovery on his late father’s farm.
“It was brand new, then, and pretty exciting times,” Anderson recalled. The amber-colored oil in the area was of such high quality, “you could have run a diesel with it straight from the well.”
“This was the first major discovery in a new geologic basin since before World War II,” James Key declared in Word and Picture Story of Williston and Area.
By 1952, Standard Oil of Indiana was building a 30,000 barrel-per-day refinery, he notes. Forty-two oilfield service and supply companies had opened offices in Williston. In June, Service Pipeline Company announced it would build a pipeline to the Standard refinery.
A U.S. Bureau of Land Management map illustrates the Bakken Shale Formation and the Williston Basin.
Key added that although the Williston Basin is named after the city of Williston, it was first exposed in 1912 by Dr. W.T. Thom Jr., “a sophomore studying geology when he happened into a creek bed in the area of the Cannonball River. It was his discovery of coral that led him to believe that the area was once inundated by an ancient sea.”
On June 17, 2014, North Dakota oil production surpassed one million barrels per day thanks to development of the Bakken shale formation in the western part of the state.
State officials reported North Dakota produced 1,001,149 barrels of oil a day from a record 10,658 wells. Industry journalists, proclaiming the milestone a sign America was freeing itself from foreign oil, referred to the state as “Saudi Dakota.”
North Dakota Dry Holes
The earliest permit issued for oil exploration in North Dakota came from the state geologist in 1923. By the late 1930s, petroleum companies were working with a growing North Dakota Geological Survey to improve the science behind exploration, which often featured difficult formations, including granite, thwarting drilling technologies of the day.
According to historian Clarence Herz, despite repeated failures, companies continued to come to North Dakota and spend large amounts of money on leases and drilling. “There were no indications from any of the wells they drilled that they were even close to production, but that did not deter them,” said Herz, adding that the expensive lessons brought many positive developments.
“A more skilled labor force and continuous technological innovation that included the use of explosives, acid and newly invented scientific instruments meant an acceleration of the drilling process as wells were not only being drilled faster, but deeper and at a much higher cost,” Herz explained.
The 1951 well that launched North Dakota’s first oil boom was drilled by Amerada Petroleum. Today, a gas processing plant operates not far from the discovery well northeast of Williston.
One such invention came from two Frenchmen, Conrad and Marcel Schlumberger,” he added. “Schlumberger was fast becoming a household name in the oil industry for the development of an electrical resistivity well log created by the French brothers in 1927.
Although it failed to find oil in the 1930s, the California Oil Company used technological and scientific breakthroughs like rotary drilling and seismometers to reach a depth previously unheard of in the state. A well spudded in October 1937 had to be abandoned in August 1938 when the drill pipe twisted off in the hole almost two miles deep. Attempts to “fish” the pipe failed.
California Oil Company’s failure did not stop exploration in other areas of the state, Herz said, citing a report noting that most major oil companies sent men to North Dakota to investigate — and buy leases. It took the Carter Oil Company three months with modern equipment to drill nearly 5,000 feet in 1940 without finding oil. Two years later the company still had not found it.
Following World War II, Herz noted that “from one corner of the state to the other, companies leap-frogged one another in anticipation of being the first to identify an oil producing zone.”
Leasing about 1.5 million acres, Continental Oil Company worked with the Pure Oil Company trying to find a North Dakota oilfield in the spring of 1949. In September 1950, Magnolia Petroleum became the latest company to drill a North Dakota dry hole.
The Magnolia wildcat well reached a depth of 5,556 feet, found granite, and was plugged and abandoned. Soon others came to North Dakota with large drilling rigs.
1951 Discovery Well
Despite exploration costs, the dry holes were not looked at as failures but as learning experiences with valuable geologic and technical knowledge gained from each attempt.
An independent oilman and investor, Thomas W. Leach was a former chief geologist for an Oklahoma oil company who was convinced oil could be found. In the late 1930s, he had convinced Standard Oil Company of California to drill a well that reached a depth of 10,281 feet.
The site Leach suggested did not find any oil — costing Standard Oil almost a million dollars.
In 1950, geologist Thomas W. Leach convinced Amerada Petroleum of Tulsa that oil could be found in North Dakota’s Nesson Anticline.
After World War II, where he served as a captain of U.S. Army artillery, Leach returned to North Dakota and continued leasing land. The geologist eventually convinced Amerada Petroleum of Tulsa that success could be found in the Nesson Anticline about 50 miles northeast of Williston.
A site was selected on Clarence Iverson’s family farm near Tioga, and drilling began on September 3, 1950, Herz reported. There was little to report until January 1951, “except the depth of the bit, the conditioning of the mud, and the occasional tripping pipe.”
Following a January 29 blizzard that shut down the well, drilling continued until total depth — 11,744 feet — was reached on February 4, 1951. No oil was found. It was decided to try “shooting” the well.
A Pennsylvania historical marker commemorates the “Roberts Torpedo.”
“The practice of perforating a well, or using explosives to perforate the rock, is not new,” says Herz. Colonel Edward A. L. Roberts first used his “Roberts Torpedo” in 1865. The practice was successful, and soon the dry holes of Pennsylvania were turned into producers by blasting wells with nitroglycerin torpedoes (see Shooters — A “Fracking” History).
Advancements to improve oil and natural gas production came from the invention of a Downhole Bazooka to perforate well casings. The Clarence Iverson No. 1 well was “shot” from 11,706 feet to 11,729 feet using a Lane-Wells Company “Koneshot,” but still no oil was found.
According to Herz, perforation became a standard practice whereby multiple charges attached to a gun were lowered into the well’s casing. Once in place the charges were fired, perforating the well at small intervals, hopefully releasing the oil from the rock.
“The Koneshot was a type of perforating gun that used a shaped charge. It was another innovation,” Herz explained. He added that charges had “a spiral placement in a steel housing at a three-inch centerline distance from each other.”
The arrangement was an improvement over some of the early perforators (learn more about perforating with shaped charges in Downhole Bazooka).
Work on the Iverson well was again halted the week of March 5 by another blizzard. The well would remain idle for several weeks until the snow-choked roads could be cleared for passage. With the well plugged back to a depth of 11,669 feet, the work stopped to make repairs and prepare for another perforation.
The State Historical Society of North Dakota preserves a Williston newspaper’s photo of the Clarence Iverson No. 1 drilling rig surrounded by snow.
The well was again perforated, this time from 11,630 feet to 11,640 feet with four holes per foot. At 12:55 a.m. on April 4, 1951, the Clarence Iverson No. 1 began producing about 240 barrels of oil a day. The state of North Dakota finally had its first discovery well.
According to a 2008 Associated Press article, at first Clarence Iverson wasn’t pleased when seismologists exploded dynamite in his wheat fields looking for oil. His son Cliff, who was 20 when oil was found on the family farm, remembers his father smiling when oil surfaced.
“He worried a lot about his water wells,” Cliff said of his father. The farm became one of the biggest tourist attractions in the Upper Midwest after oil was discovered there. “They came from as far as Minnesota and all over North Dakota and Montana,” he added. “People knew it was history in the making, and it changed a lot of people’s lives.”
The Clarence Iverson No. 1 well alone produced 585,000 barrels of oil. Clarence Iverson died in 1986, a wealthy man “who never got used to all that money.”
The Bakken Shale
The earliest producing wells of the Bakken shale formation were drilled in the early 1950s on Henry O. Bakken’s farm less than five miles from the Clarence Iverson No. 1 well. Occupying about 200,000 square miles within the Williston Basin, the oil shale of the Bakken formation may be the largest domestic oil resource since Alaska’s Prudhoe Bay, according to many experts. But efforts to extract shale oil using conventional vertical wells proved difficult.
“The Clarence Iverson well produced from the Silurian, Duperow, and Madison formations, but not the Bakken,” reported Kathy Neset, a geologist who moved to Tioga from New Jersey in 1979. “There are several oil-producing formations at different depths within the larger Williston Basin.”
The Bakken shale play consists of three layers, according to the Energy Policy Research Foundation, Inc. The middle sandstone layer is what is commonly drilled and fractured.
The Bakken formation frustrated a lot of geologists for years, “because they knew the oil was there, but they didn’t have the technology to extract the oil,” Neset explained in a 2012 Mitchell Republic newspaper article, “Famous Bakken Formation Named For North Dakota Homesteaders.”
The Bakken formation first produced in 1953 from a well named after Henry Bakken, the landowner. Like the Williston discovery well, it was also drilled by Amerada Petroleum. This first shale well was on the Nesson Anticline, later known as a Bakken “sweet spot,” home to natural fractures in the rock, according to the Energy Policy Research Foundation.
Although North Dakota has been an oil-producing state since 1951, only during the past decade has the Bakken oil boom made it the fourth largest producing state — and one of the largest onshore plays in the entire United States.
“The Bakken is a shale oil play. It is conventional, light-sweet crude oil, trapped 10,000 feet below the surface within shale rock,” the foundation noted (also see Ute Oil Company — Oil Shale Pioneers). The shale consists of three layers — an upper layer of shale rock, a middle layer of sandstone/dolomite, and a lower layer of shale rock. The middle sandstone layer is what is commonly drilled and fractured.
“Production was mainly from a few vertical wells — until the 1980s when horizontal technology became available,” added a 2008 article in the Oil Drum. “Only recently after the intensive application of horizontal wells combined with hydraulic fracturing technology did production really take off.”
Well production efficiency in the Bakken region increased significantly in 2020, according to the Energy Information Administration (EIA).
U.S. Geological Survey (USGS) in 2008 estimated 3.0 billion barrels to 4.3 billion barrels of undiscovered oil in America’s portion of the Bakken formation, elevating it to a “world-class” accumulation. The survey’s assessment of the shale’s potential was a 25-fold increase in the amount of “technically recoverable” oil compared to the agency’s 1995 estimate of just 151 million barrels of oil.
According to state statistics from 2010, oil production from the Bakken in North Dakota had steadily increased from about 28 million barrels in 2008 to 50 million barrels in 2009 to approximately 86 million barrels. In 2020, initial oil production per well — well production efficiency — increased significantly in the Bakken region, according to the Energy Information Administration (EIA).
A USGS estimate for the Bakken and Three Forks Formations in the Williston Basin of Montana and North Dakota includes 4.3 billion barrels of unconventional oil and 4.9 trillion cubic feet of unconventional natural gas in the two formations.
As Secretary of the Interior Ken Salaza earlier predicted, “The Bakken formation is producing an ever-increasing amount of oil for domestic consumption while providing increasing royalty revenues to American Indian tribes and individual Indian mineral owners in North Dakota and Montana.”
Discover more articles featuring America’s first oil discoveries.
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Recommended Reading: The Bakken Goes Boom: Oil and the Changing Geographies of Western North Dakota
(2016); Trek of the Oil Finders: A History of Exploration for Petroleum (1975). Your Amazon purchases benefit the American Oil & Gas Historical Society; as an Amazon Associate, AOGHS earns a commission from qualifying purchases.
_______________________
The American Oil & Gas Historical Society (AOGHS) preserves U.S. petroleum history. Please support this energy education website, subscribe to our monthly email newsletter, and help expand historical research. Contact bawells@aoghs.org. Copyright © 2026 Bruce A. Wells.
Citation Information – Article Title: “First North Dakota Oil Well.” Authors: B.A. Wells and K.L. Wells. Website Name: American Oil & Gas Historical Society. URL: https://aoghs.org/petroleum-pioneers/north-dakota-williston-basin. Last Updated: March 29, 2026. Original Published Date: March 31, 2014.
by Bruce Wells | Mar 25, 2026 | Petroleum Pioneers
Electra residents in 1911 thought news of the oil gusher was an April Fool’s Day joke.
When a geyser of oil erupted from the Clayco No. 1 well near Electra on April 1, 1911, the giant oilfield discovery launched a drilling boom that brought prosperity and more exploration to North Texas. State lawmakers would later designate Electra and its giant, shallow oilfield as the “Pump Jack Capital of Texas.”
Just south of the Red River, Electra was a small, cotton-farming community barely four years old when petroleum exploration companies rushed to North Texas in 1911. (more…)
by Bruce Wells | Mar 22, 2026 | Petroleum Pioneers
Abundant 19th-century natural gas supplies attracted manufacturers away from coal.
Natural gas discoveries of the 1880s revealed the giant Trenton Field in Indiana, which extended into Ohio. New pipelines and abundant gas supplies would attract manufacturing industries to the Midwest — where small towns competed with cities to attract new industries. It was an Indiana natural gas boom too good to last. (more…)
