Ihe SHELL } NEWS COLUMN For almost a hundred Years men have been drilling for oil, but usually straight down: Now-a-days, they can drill at sharp angles and even side- ways. Deflection drilling for exploration is practised in South African gold mining, but in oilfields a successful deflection can result in an immediate increase in production: With im- proved te chniques, permitting an angle of uP to 65 degrees from the vertical, wells can now be drilled under inaccessible locations; such as residential areas. From beach loca- tions, bits are deflected under the ocean floor, sometimes a mile or more from the shoreline: It was a Californian engineer, John Zublin, who two years ag0 announced that he had developed a method of drilling horizontally from a conven- tional vertical hole. Shell tested Zublin' $ method in an old well in California. The well now has nine horizontal drains open for additional production. This method is one of many constantly being tested in Shell's scientific and world-wide search for oil. Another in the Series THE SHELL COMPANY OF NZ. LTD (Incorporated in England)
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New Zealand Listener, Volume 20, Issue 506, 4 March 1949, Page 4
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180Page 4 Advertisement 1 New Zealand Listener, Volume 20, Issue 506, 4 March 1949, Page 4
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