CS9000285A2 - Drill string for worked-out areas drainage - Google Patents

Drill string for worked-out areas drainage

Info

Publication number
CS9000285A2
CS9000285A2 CS28590A CS28590A CS9000285A2 CS 9000285 A2 CS9000285 A2 CS 9000285A2 CS 28590 A CS28590 A CS 28590A CS 28590 A CS28590 A CS 28590A CS 9000285 A2 CS9000285 A2 CS 9000285A2
Authority
CS
Czechoslovakia
Prior art keywords
worked
drill string
out areas
drainage
areas drainage
Prior art date
Application number
CS28590A
Other languages
Czech (cs)
Inventor
Jan Pasecny
Radovan Rndr Pipek
Vladimir Ing Csc Sevcik
Original Assignee
Jan Pasecny
Radovan Rndr Pipek
Vladimir Ing Csc Sevcik
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 by Jan Pasecny, Radovan Rndr Pipek, Vladimir Ing Csc Sevcik filed Critical Jan Pasecny
Priority to CS28590 priority Critical patent/CZ278304B6/en
Publication of CS9000285A2 publication Critical patent/CS9000285A2/en
Publication of CZ278304B6 publication Critical patent/CZ278304B6/en

Links

CS28590 1990-01-22 1990-01-22 Drill string for abandoned area drainage CZ278304B6 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CS28590 CZ278304B6 (en) 1990-01-22 1990-01-22 Drill string for abandoned area drainage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS28590 CZ278304B6 (en) 1990-01-22 1990-01-22 Drill string for abandoned area drainage

Publications (2)

Publication Number Publication Date
CS9000285A2 true CS9000285A2 (en) 1991-08-13
CZ278304B6 CZ278304B6 (en) 1993-11-17

Family

ID=5334706

Country Status (1)

Country Link
CZ (1) CZ278304B6 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102162374B (en) * 2011-03-16 2013-01-02 中煤科工集团西安研究院 An anti-blocking device for a gob water drainage drill hole

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102162374B (en) * 2011-03-16 2013-01-02 中煤科工集团西安研究院 An anti-blocking device for a gob water drainage drill hole

Also Published As

Publication number Publication date
CZ278304B6 (en) 1993-11-17

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