PL255912A1 - Double-core drill pipe for rocky formations - Google Patents

Double-core drill pipe for rocky formations

Info

Publication number
PL255912A1
PL255912A1 PL25591285A PL25591285A PL255912A1 PL 255912 A1 PL255912 A1 PL 255912A1 PL 25591285 A PL25591285 A PL 25591285A PL 25591285 A PL25591285 A PL 25591285A PL 255912 A1 PL255912 A1 PL 255912A1
Authority
PL
Poland
Prior art keywords
double
drill pipe
core drill
rocky formations
rocky
Prior art date
Application number
PL25591285A
Other languages
English (en)
Inventor
Siegmar Thomaschewski
Winfried Rettig
Karl Wiesecke
Original Assignee
Geol Erkundung Stendal Veb
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 Geol Erkundung Stendal Veb filed Critical Geol Erkundung Stendal Veb
Publication of PL255912A1 publication Critical patent/PL255912A1/xx

Links

PL25591285A 1984-11-08 1985-10-24 Double-core drill pipe for rocky formations PL255912A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DD26923684A DD250238A3 (de) 1984-11-08 1984-11-08 Kombinations-doppelkernrohr fuer die gesteinszerstoerung

Publications (1)

Publication Number Publication Date
PL255912A1 true PL255912A1 (en) 1986-09-23

Family

ID=5562042

Family Applications (1)

Application Number Title Priority Date Filing Date
PL25591285A PL255912A1 (en) 1984-11-08 1985-10-24 Double-core drill pipe for rocky formations

Country Status (5)

Country Link
BG (1) BG50675A1 (xx)
CS (1) CS753785A1 (xx)
DD (1) DD250238A3 (xx)
HU (1) HUT53189A (xx)
PL (1) PL255912A1 (xx)

Also Published As

Publication number Publication date
BG50675A1 (en) 1992-10-15
DD250238A3 (de) 1987-10-08
CS753785A1 (en) 1987-12-17
HUT53189A (en) 1990-09-28

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