Engineering Wonders of the World
Volume I

År: 1945

Serie: Engineering Wonders of the World

Sider: 448

UDK: 600 Eng -gl.

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Side af 476 Forrige Næste
ENGINEERING IN THE WORLD’S OIL FIELDS. 331 a special implement costing in some cases hundreds of pounds. So great are the difficulties of taking hold of a lost bit at the bottom of a deep well, that months are not infrequently spent on the task in some circumstances. Matters are rendered doubly serious when the fishing tools themselves break in the well, and have in their turn to be fished for, or when sand rushes up the well and cov- ers the tools. Gas under pressure, though a good servant for raising oil without cost, is an ex- AT THE FOOT OF A DERRICK—BALING OIL INTO TANK. a tremely bad master. In certain fields the penetration of the bed is followed by A DERRICK WRECKED BY A VERY VIOLENT “ SPOUTER,” WHICH HAS CREATED A LARGE LAKE OF OIL AND WATER.