...Frederick G. Clapp ABSTRACT Nearly the entire oil production of France comes from Oligocene sand lenses in the Péchelbronn field in the Department of Bas-Rhin, Alsace, where it has been mined for many decades by means of shafts and galleries in addition to being recovered in recent years from wells...

... of error of the instruments or of the measurement methods was begun. But only after a considerable improvement of the method was it possible to obtain such results as permitted starting a systematic study of the temperature gradient in the Pechelbronn oil field. A tight net of almost 500 measurements...

... and modern mines have been opened for the production of oil. Two such mines are on a commercial basis, one at Pechelbronn, Alsace, the other one at Wietze, in Hannover, Germany. The oil field of Pechelbronn, the only important producing field of France, is located in northern Alsace north of Hagenau...

... cap”above the oil, but the oil itself is rich in gas. 2. Natural gas occurs at Volkenroda in Thuringia in nearly flat or only slightly arched beds. The gas overlies the oil in Middle Zechstein dolomite below the potash deposits. 3. Natural gas occurs in the Pechelbronn oil field in the Rhine Valley...

... (<10 7 barrels) with most of the production (90%) coming from the Pechelbronn and Landau oil fields. Schnaebele et al. (1948) reported that total oil production from the larger Pechelbronn fields were about 3 million metric tons. Petroleum from these fields ranges in composition from a paraffinic...

... in a narrow range, suggesting oxic, proximal terrestrial-influenced environments (fields I–IVa). In contrast, three samples assigned to the Middle Pechelbronn Formation of well C (hanging wall) plot in a wider range, thus indicating a variable terrestrial influx and variable oxygen levels, ranging from oxic...

... barrels in 1952 and 2,106,680 barrels in 1953, which was 84.0 and 82.2 per cent, respectively, of the entire French production. The production of the old Pechelbronn oil field, in the Lower Alsace Valley, is steadily decreasing. In the Languedoc area, in southeast France, there are two abandoned fields...

... being confined to Cretaceous, Jurassic, perhaps Triassic, and Permian-Carboniferous sediments. The same age limitation applies to the present production in southern France and Great Britain. The major Tertiary production in western Europe known at present is from the Pechelbronn field and adjoining...

... the upper Rhine Valley and the Vienna basin are representative. In the Rhine graben, a new field was discovered in its northern central part, producing from the same Oligocene sands which have been known to produce oil in its southern part at Pechelbronn (Alsace) for a century. No new oil fields were...

... to the vicinity of Mainz. This district is crossed by the German-French frontier. The Alsacian oil occurrences, with the oil field of Pechelbronn, belong to France. It is here that almost the entire oil output of France (amounting to 478,000 barrels in 1926) is produced. On German territory oil has been found...

.... In the nineteenth century shafts and galleries were worked on a commercial scale in Pechelbronn, Alsace, but were abandoned on account of the large quantities of gas that were encountered. Over thirty-five years ago the Union Oil Company of California 2 had dug twenty-six tunnels to reach an oil formation...

... are located in these depressed border areas; therefore, they may be called foreland depression occurrences. The largest oil and gas fields of Europe lie in these areas and in general they include almost all occurrences which until now have been commercially important. Caucasus .—In eastern Europe...

..., 1988 , 1999 , 2016 ) is made of the juxtaposition of several tables according to the studied deposits in each subbasin ( Fig. 1 ): the Pechelbronn Basin in the north, the Potash Basin between Mulhouse and Colmar, the Mulhouse Horst at the south, and marginal basins composed of coarse-grained facies...

... the members to Strasbourg, arriving there before midnight. On September 21 some members visited the Pechelbronn oil mines and others visited the Strasbourg petroleum colleges. In the evening a fine banquet was given to the members by the Chamber of Commerce of Strasbourg and the Pechelbronn Company...

... analogies between the grabens of the Limagne and the Alsace plains, and between the Oligocene deposits that occupy these two grabens, are strong evidence of the similarity between the Pechelbronn oil fields and the bitumen of Limagne. The absence of volcanic manifestations in the region of Pechelbronn...

...Fig. 2. —Northwest-southeast section across Pechelbronn oil field, Rhine rift, France and Germany. After Schnaebele (1937) . ...

... on the north flank of the Brabant Massif, was cored continuously below 649 meters. The following formations were logged. Production of the old Pechelbronn oil field in northern Alsace and the Staffelfelden field in southern Alsace are both declining, but new oil showings and small fields indicate new...

... of the Vosges and the Black Forest. The western side of this area, ceded to France in 1918, contains the oil fields of Pechelbronn and a few others of less importance. The oil occurs in sand lenses in the Oligocene. At Pechelbronn they are exploited by underground mining, similar to the method described...

...; the ground-breaking Pennsylvanian oil strikes provided a different vision of the way to produce oil. The new productive pattern included the systematic search for oil fields to exploit within oil regions; the process of boring into soil by means of mechanical drilling systems, specifically adapted/produced...