DRILLING MANUAL - Geoscience

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Record 2004-007DRILLING MANUALJN DUNSTERNORTHERN TERRITORY GEOLOGICAL SURVEYNorthern Territory GovernmentDepartment of Business, Industry & Resource DevelopmentiNORTHERN TERRITORY DEPARTMENT OF BUSINESS,INDUSTRY AND RESOURCE DEVELOPMENTGeological Survey Record2004-007Drilling manualJN DunsterNorthern Territory GovernmentDepartment of Business, Industry & Resource DevelopmentNorthern Territory Geological SurveyDarwin, 2004iiDEPARTMENT OF BUSINESS, INDUSTRY AND RESOURCE DEVELOPMENTMINISTER: Hon Kon Vatskalis, MLACHIEF EXECUTIVE OFFICER: Mike BurgessNORTHERN TERRITORY GEOLOGICAL SURVEYDIRECTOR: Richard BrescianiniBIBLIOGRAPHIC REFERENCE: Dunster JN, 2004. DRILLING MANUAL . Northern Territory Geological Survey, Record 2004-007.(Record / Northern Territory Geological Survey ISSN 1443-1149)BibliographyISBN 0 7245 7085 3Keywords: DRILLING , core DRILLING , diamond DRILLING , DRILLING problems, RC DRILLING , slim hole DRILLING , stratigraphic DRILLING ,wire line DRILLING , DRILLING equipment, DRILLING fluidsEDITORS: PD Kruse and TJ MunsonFor further information contact: Geoscience InformationNorthern Territory Geological SurveyGPO Box 3000Darwin NT 0801Phone: +61 8 8999 6443Website: Northern Territory Government 2004DisclaimerWhile all care has been taken to ensure that information contained in Northern Territory Geological Survey, Record 2004-007is true and correct at the time of publication.

The various types of drilling may be classified according to the hole-making action and the hole cleaning method. Those of relevance to NTGS are described below. Open hole rotary drilling is widely used in petroleum and minerals exploration. It uses a slowly rotating (typically <100 rpm)

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