[DOWNLOAD] "Scientific American Supplement, No. 508, September 26, 1885" by Various Authors # eBook PDF Kindle ePub Free

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Title: Scientific American Supplement, No. 508, September 26, 1885
Author : Various Authors
Release Date : January 01, 2012
Genre: Antiques & Collectibles,Books,Lifestyle & Home,
Pages : * pages
Size : 776 KB

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Among oil producers, there has been much discussion as to whether the sand rock in which petroleum occurs is of necessity fissured or is still in its original unbroken condition. The earliest and most natural theory, which for years was indisputed, and is still given by some textbooks, was, that oil wells reached a cavity filled with petroleum. Within the past few years, however, the opinion has been gaining ground that the oil is stored in the sandrock itself in the minute spaces between the small grains of sand, not entirely filled by cementing material, and that crevices holding and conducting oil are rare, all fissures as a rule being confined to the upper fresh-water bearing rocks of the well. Mr. Carll, in III. Pennsylvania Second Geological Survey, has discussed this subject very fully, and has made estimates of the quantity of oil that the sand rock can hold and deliver into a well.