JPS63171490U - - Google Patents

Info

Publication number
JPS63171490U
JPS63171490U JP6505987U JP6505987U JPS63171490U JP S63171490 U JPS63171490 U JP S63171490U JP 6505987 U JP6505987 U JP 6505987U JP 6505987 U JP6505987 U JP 6505987U JP S63171490 U JPS63171490 U JP S63171490U
Authority
JP
Japan
Prior art keywords
wellhead
annular packing
pipe body
propulsion
outer periphery
Prior art date
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.)
Granted
Application number
JP6505987U
Other languages
English (en)
Japanese (ja)
Other versions
JPH0512391Y2 (enrdf_load_html_response
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 JP1987065059U priority Critical patent/JPH0512391Y2/ja
Publication of JPS63171490U publication Critical patent/JPS63171490U/ja
Application granted granted Critical
Publication of JPH0512391Y2 publication Critical patent/JPH0512391Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Excavating Of Shafts Or Tunnels (AREA)
JP1987065059U 1987-04-28 1987-04-28 Expired - Lifetime JPH0512391Y2 (enrdf_load_html_response)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1987065059U JPH0512391Y2 (enrdf_load_html_response) 1987-04-28 1987-04-28

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1987065059U JPH0512391Y2 (enrdf_load_html_response) 1987-04-28 1987-04-28

Publications (2)

Publication Number Publication Date
JPS63171490U true JPS63171490U (enrdf_load_html_response) 1988-11-08
JPH0512391Y2 JPH0512391Y2 (enrdf_load_html_response) 1993-03-30

Family

ID=30901787

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1987065059U Expired - Lifetime JPH0512391Y2 (enrdf_load_html_response) 1987-04-28 1987-04-28

Country Status (1)

Country Link
JP (1) JPH0512391Y2 (enrdf_load_html_response)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS523871U (enrdf_load_html_response) * 1975-06-24 1977-01-12

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS523871U (enrdf_load_html_response) * 1975-06-24 1977-01-12

Also Published As

Publication number Publication date
JPH0512391Y2 (enrdf_load_html_response) 1993-03-30

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