AU423794B2 - - Google Patents

Info

Publication number
AU423794B2
AU423794B2 AU1062570A AU1062570A AU423794B2 AU 423794 B2 AU423794 B2 AU 423794B2 AU 1062570 A AU1062570 A AU 1062570A AU 1062570 A AU1062570 A AU 1062570A AU 423794 B2 AU423794 B2 AU 423794B2
Authority
AU
Australia
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
AU1062570A
Other versions
AU1062570A (en
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to AU1062570A priority Critical patent/AU423794B2/xx
Publication of AU1062570A publication Critical patent/AU1062570A/en
Application granted granted Critical
Publication of AU423794B2 publication Critical patent/AU423794B2/xx
Application status is Expired legal-status Critical

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B21/00Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/12Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor using drilling pipes with plural fluid passages, e.g. closed circulation systems
AU1062570A 1970-01-23 1970-01-23 Expired AU423794B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU1062570A AU423794B2 (en) 1970-01-23 1970-01-23

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AU1062570A AU423794B2 (en) 1970-01-23 1970-01-23

Related Child Applications (1)

Application Number Title Priority Date Filing Date
AU400,148 Division 1970-01-23

Publications (2)

Publication Number Publication Date
AU1062570A AU1062570A (en) 1970-04-30
AU423794B2 true AU423794B2 (en) 1971-03-02

Family

ID=3701559

Family Applications (1)

Application Number Title Priority Date Filing Date
AU1062570A Expired AU423794B2 (en) 1970-01-23 1970-01-23

Country Status (1)

Country Link
AU (1) AU423794B2 (en)

Also Published As

Publication number Publication date
AU1062570A (en) 1970-04-30

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