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Bulletin of the American Association of Petroleum Geologists Volume 5 epub

Bulletin of the American Association of Petroleum Geologists Volume 5 epub

Bulletin of the American Association of Petroleum Geologists Volume 5 by American Association Geologists
Bulletin of the American Association of Petroleum Geologists Volume 5
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Author: American Association Geologists
Page Count: 232 pages
Published Date: 13 Sep 2013
Publisher: Rarebooksclub.com
Publication Country: United States
Language: English
Format: Pdf
ISBN: 9781236975003
File Name: Bulletin.of.the.American.Association.of.Petroleum.Geologists.Volume.5.pdf
Download Link: Bulletin of the American Association of Petroleum Geologists Volume 5
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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1921 edition. Excerpt: ... oil had previously been withdrawn by earlier drilling. Decline curves are not yet available to show how wells drilled in recent years compare with older wells in staying powers. It is anticipated, however, that, as most of the recent drilling has been in the gaps left in earlier drilling, the wells will be shorter lived. The combination of reduced initial flow and possible shorter life will, in time, act together to bring the total flow of the average well to a point where it will not pay the cost of drilling and maintenance. An increase in the price of crude petroleum will postpone the coming of such a time, ' assuming that the cost of drilling does not increase correspondingly. In some of the fields it would appear that the point of vanishing profits would be reached in about 10 or 15 years unless new sands are found or some means devised for renewing the wells. For over 10 years production of oil has been maintained at between 7 and 8 million barrels or a little over. A comparison of the total number of new wells with the total production for the years 1900 to 1920, inclusive, gives definite evidence of a decline. includes New York and West Virginia; 0 without Meeks well; c January only. A study of this table in connection with production curves brings out the following facts regarding the production of oil in Pennsylvania: (1) a fairly steady rise of production to 1874 with a slight decline to 1876; (2) the opening of the Bradford field in which production increased rapidly to a maximum of 25,000,000 barrels with a corresponding decline in the other fields of the state; (3) in 1885 and 1886 the production from Washington and Green counties became prominent, increasing the total production of the state by 5,500,000 barrels in 1886, ...

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