The first drilling for oil at Saginaw was in 1912 by the Saginaw Valley Development Company. The wells were located on the south limb of the Saginaw anticline. Oil was found, though not in commercial quantities, in the “Saginaw sand”—a dolomitic lime in the Traverse formation. The discovery well leading to the present development was drilled in the fall of 1925 by the Saginaw Prospecting Company.
Most of the production is from the Berea sand, of Mississippian age, at depths ranging from 1,800 to 1,860 feet. Wells, after being shot, produce from 2 or 3 barrels to 40 barrels a day, depending upon location on structure and “tightness” of sand. The oil is of 46° Be. gravity and contains about 48 per cent gasoline.
On June 1, two wells were producing from the Saginaw lime at a depth of 2,300 feet. This lime is in the Traverse formation, of Devonian age. Other wells drilled to this “pay,” and favorably located, have been dry.
The total production of the field on June 1 was about 1,400 barrels a day from more than 190 wells.
The limit of the field is approximately defined, except at the southeast, where the trend of the pool is into the business district.
It is probable that additional production will be found in the eastern part of the state should conditions structurally favorable.be found. The thickness of glacial drift and the absence of the Berea sand in western Michigan make this part of the state less favorable for oil and gas development.
Figures & Tables
Modern petroleum geology in the United States had its beginning in the first decade of the 20th Century when the U.S. Geological Survey began mapping the structure of the rocks in and near old fields in order to discover the various types of structural conditions under which oil and gas are trapped. Structural geology has evolved as a branch of the broader science far more rapidly than have methods of mapping the attitude of rocks at the surface. This volume, published in the late 1920s, was designed to afford authoritative and modern descriptions of the structure of typical oil fields in the United States. Each of the 30 fields contained here is described by an author who is intimately familiar with the available data. The relationship of structure at the surface and at depth for different terranes is clearly set forth wherever the strata are not parallel. Fields include: McKittrick, California; Fairport, Kansas; Urania, Louisiana; Artesia, New Mexico; Burbank, Oklahoma; Cabin Creek, West Virginia; and Luling, Texas.