CFA augers, ma ọ bụ Continuous Flight Augers, ndị a bụ ndị ọrụ a na-eme ka ịdị mkpa n'ime ụlọ ọrụ ndoro ndoro nke ndoro ndoro na ọrụ geotechnical, kwa n'ime ịmụ maka ịzụta ụlọ ọrụ concrete nke adịghị enweghị nke a na-akpọ casing. Ndị augers a were ike ịmalite ịkwalite ụlọ ọrụ driller n'oge na-aga n'oge, n'oge na-eme ka ha na-enyere ọnwụ na ịdị nzọụkwụ na ụlọ ọrụ drilling. Ndị a na-eme ka ọ dị mkpa ịdị nzọụkwụ nke ndị na-ahụ maka Kelly bars.
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