Penetrator bores horizontal holes in well casing to increase trapped oil drainage. Several penetrators operated by common drive are inserted into well at once. Shaft, made from spiraling cable, rotates and thrusts simultaneously through rigid curvilinear guide tube forcing bit through casing into strata. Device pierces more deeply than armor-piercing bullets and shaped explosive charges.
Sidewall penetrator for oil wells
NASA Tech Briefs ; 5 , 4
1981-04-01
Sonstige
Keine Angabe
Englisch
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