Conrad Schlumberger and Marcel Schlumberger
- Born: October 2, 1878, Guebwiller, Alsace, Germany [now in France]
- Died: May 9, 1936, Stockholm, Sweden
- Born: June 21, 1884, Guebwiller, Alsace, Germany [now in France]
- Died: August 19, 1953, Val-Richer, Normandy, France
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Who were Conrad Schlumberger and Marcel Schlumberger?
Conrad and Marcel Schlumberger were French brothers born in Alsace (then part of Germany) who revolutionized mining and petroleum production.
Conrad (1878â1936) and Marcel (1884â1953) invented a method of continuous electric logging of boreholes in 1927, applying physics to geology. In 1926, they founded Schlumberger Ltd., a leading oil-field service company. Conrad taught physics at the Ăcole SupĂ©rieure des Mines in Paris. Marcel studied engineering and worked for foreign mining interests.
In 1919, they established their first company, expanding patents for their techniques globally. Their technique offered a more affordable and reliable method for well logging.
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What is geophysics?
Geophysics is a major branch of Earth science that uses physics to study the Earth, dealing with phenomena from the planet's interior temperature to its magnetic field.
Conrad and Marcel Schlumberger were French brothers and geophysicists who invented a method of continuous electric logging of boreholes in 1927. Their application of physics to geology revolutionized mining and petroleum production. In 1926, they founded Schlumberger Ltd., a leading oil-field service company.
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What did the Schlumberger brothers invent in the field of geophysics?
Conrad and Marcel Schlumberger, French brothers and geophysicists, invented a method of continuous electric logging of boreholes in 1927. This innovation applied physics to geology, bringing major changes to mining and petroleum production and revolutionizing oil exploration by offering a cheaper and more reliable method of well logging compared to traditional coring techniques.
Between 1911 and 1914, Conrad developed a method for detecting mineral deposits by passing an electric current through the ground and measuring variations in resistivity caused by underground rock formations. In 1926, the brothers developed a technique using a wire-drawn electrode to measure variations in electrical resistivity in a borehole drilled through rock formations. The company they founded in 1926, Schlumberger Ltd., remains a leading oil-field service company.
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How did the Schlumberger brothers use electricity to study the Earth?
Conrad and Marcel Schlumberger were French brothers and geophysicists who invented a groundbreaking method of using electricity to study the Earth.
Between 1911 and 1914, Conrad developed a technique to detect mineral deposits. This involved passing an electric current through the ground and measuring variations in resistivity caused by underground rock formations. In 1927, they developed a technique for using a wire-drawn electrode to measure variations in electrical resistivity in a borehole drilled through rock formations. This became the first electric "well log," profiling an oil well. Their method revolutionized oil exploration, offering a cheaper and more reliable method of well logging than traditional coring techniques.
Electrical methods involve measuring reflectivity, magnetism, gravity, acoustic or elastic waves, radioactivity, heat flow, electricity, and electromagnetism. Resistivity methods involve passing a current from a generator between a pair of current electrodes and measuring potential differences with another pair of electrodes.
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Why was the Schlumberger brothers' work important for oil exploration?
Conrad and Marcel Schlumberger were French brothers who revolutionized oil exploration through their invention of continuous electric logging of boreholes in 1927. This technique offered a more reliable and cheaper method for well logging compared to traditional coring techniques.
Between 1911 and 1914, Conrad developed a method for detecting mineral deposits by passing an electric current through the ground and measuring variations in resistivity caused by underground rock formations. In 1923, the brothers conducted the first large-scale petroleum survey, mapping an oil reservoir beneath a salt dome in Romania. Their work applying physics to geology brought major changes to mining and petroleum production, and their company, Schlumberger Ltd., remains a vital oil-field service company.
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What is the Schlumberger company, and how did the brothers start it?
Conrad Schlumberger and Marcel Schlumberger, French brothers and geophysicists, revolutionized mining and petroleum production by inventing a method of continuous electric logging of boreholes in 1927.
In 1926, they founded Schlumberger Ltd., a major oil-field service company. Earlier, Conrad developed a method for detecting mineral deposits using electric currents. With financing from their father, the brothers founded their first company to extend patents for their techniques worldwide. In 1923, they conducted a large-scale petroleum survey in Romania. Their well-logging technique offered a cheaper, more reliable method than traditional coring.
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Conrad Schlumberger and Marcel Schlumberger were French brothers, geophysicists and petroleum engineers noted for their invention, in 1927, of a method of continuous electric logging of boreholes. Their application of physics for use in geology brought major and universally adopted changes in mining and petroleum production. The company they founded in 1926, Schlumberger Limited (SLB), is still one of the most important oil-field service companies in the world.
The Schlumbergersâ father was the scion of a prosperous French-speaking Alsatian family of textile manufacturers, and their mother was the granddaughter of François Guizot, a conservative minister during the reign of Louis-Philippe (1830â48). The brothers were born during a period when their native Alsace was annexed to Germany, and both left for France before the age of military service. Conrad Schlumberger graduated from the Ăcole Polytechnique in Paris in 1900. He taught physics at the Ăcole SupĂ©rieure des Mines, also in Paris, from 1907, interrupting his academic career during World War I (1914â18) to serve as an artillery officer in the French army. Marcel Schlumberger studied engineering at the Ăcole Centrale in Paris, graduating in 1907, and in 1909 he went to work for foreign mining interests owned by his wifeâs family; he too served in the army during the war.
Between 1911 and 1914 Conrad Schlumberger developed a method of detecting mineral deposits by passing an electric current through the ground and taking measurements at the surface of variations in resistivity caused by underground rock formations. His first experiments were conducted at the family estate in Val-Richer, Normandy. In 1919 the two brothers, with financing from their father, founded their first company, which extended patents for their techniques all over the world. In 1923 Conrad resigned his professorship to join the business full-time. That year the brothers conducted the first large-scale petroleum survey, mapping an oil reservoir beneath a salt dome in Romania. In 1926 they founded the SociĂ©tĂ© de Prospection Ălectrique, the precursor of SLB. During that period they also developed a technique for using a wire-drawn electrode to measure variations in electrical resistivity in a borehole drilled through rock formations. In 1927 a team led by Conrad Schlumbergerâs son-in-law, Henri-Georges Doll, conducted the first electric âwell log,â profiling an oil well drilled hundreds of meters into the rock near PĂ©chelbronn in Alsace.
The Schlumbergersâ technique revolutionized oil exploration, offering a far cheaper and more reliable method of well logging than the traditional coring techniques. In 1935 they established an affiliated company in the United States. After Conrad Schlumbergerâs death while returning from a business trip to the Soviet Union, Marcel Schlumberger ran the company along with a number of family members, including Doll and Marcel Schlumbergerâs son, Pierre. Marcel Schlumberger died at the family estate in Normandy. At nearby CrĂšvecĆur Castle a small museum commemorates the innovations of the Schlumberger brothers.