Drill pipe and drill string
The present invention relates to a drill pipe (1) comprising at least a central portion (2), a first end piece (3) and a second end piece (4), where the end pieces (3, 4) permit interconnection with mating parts of another drill pipe (1), said central portion (2) comprising a cylindrical tube, where...
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| creator | ÖHRN, Anders ANDERSSON, Lars |
| description | The present invention relates to a drill pipe (1) comprising at least a central portion (2), a first end piece (3) and a second end piece (4), where the end pieces (3, 4) permit interconnection with mating parts of another drill pipe (1), said central portion (2) comprising a cylindrical tube, wherein said central portion (2) is arranged with an inner pipe (5) arranged at an inner wall (20) of said central portion (2) and having a wall thickness (t) which reduces the volume (V) of the void inside the central portion (2) with at least 10 %, more preferred at least 25 % and most preferred at least 50 %. |
| format | Patent |
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EARTH DRILLING ; EARTH DRILLING, e.g. DEEP DRILLING ; ENGINEERING ELEMENTS AND UNITS ; FIXED CONSTRUCTIONS ; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS ; HEATING ; JOINTS OR FITTINGS FOR PIPES ; LIGHTING ; MEANS FOR THERMAL INSULATION IN GENERAL ; MECHANICAL ENGINEERING ; MINING ; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS ; PIPES ; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING ; THERMAL INSULATION IN GENERAL ; WEAPONS</subject><creationdate>2019</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20190402&DB=EPODOC&CC=SE&NR=541084C2$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76289</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20190402&DB=EPODOC&CC=SE&NR=541084C2$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>ÖHRN, Anders</creatorcontrib><creatorcontrib>ANDERSSON, Lars</creatorcontrib><title>Drill pipe and drill string</title><description>The present invention relates to a drill pipe (1) comprising at least a central portion (2), a first end piece (3) and a second end piece (4), where the end pieces (3, 4) permit interconnection with mating parts of another drill pipe (1), said central portion (2) comprising a cylindrical tube, wherein said central portion (2) is arranged with an inner pipe (5) arranged at an inner wall (20) of said central portion (2) and having a wall thickness (t) which reduces the volume (V) of the void inside the central portion (2) with at least 10 %, more preferred at least 25 % and most preferred at least 50 %.</description><subject>BLASTING</subject><subject>EARTH DRILLING</subject><subject>EARTH DRILLING, e.g. DEEP DRILLING</subject><subject>ENGINEERING ELEMENTS AND UNITS</subject><subject>FIXED CONSTRUCTIONS</subject><subject>GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS</subject><subject>HEATING</subject><subject>JOINTS OR FITTINGS FOR PIPES</subject><subject>LIGHTING</subject><subject>MEANS FOR THERMAL INSULATION IN GENERAL</subject><subject>MECHANICAL ENGINEERING</subject><subject>MINING</subject><subject>OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS</subject><subject>PIPES</subject><subject>SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING</subject><subject>THERMAL INSULATION IN GENERAL</subject><subject>WEAPONS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2019</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZJB2KcrMyVEoyCxIVUjMS1FIAXOLS4oy89J5GFjTEnOKU3mhNDeDvJtriLOHbmpBfnxqcUFicmpeakl8sKupiaGBhYmzkTFhFQDL6CJG</recordid><startdate>20190402</startdate><enddate>20190402</enddate><creator>ÖHRN, Anders</creator><creator>ANDERSSON, Lars</creator><scope>EVB</scope></search><sort><creationdate>20190402</creationdate><title>Drill pipe and drill string</title><author>ÖHRN, Anders ; ANDERSSON, Lars</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_SE541084C23</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2019</creationdate><topic>BLASTING</topic><topic>EARTH DRILLING</topic><topic>EARTH DRILLING, e.g. DEEP DRILLING</topic><topic>ENGINEERING ELEMENTS AND UNITS</topic><topic>FIXED CONSTRUCTIONS</topic><topic>GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS</topic><topic>HEATING</topic><topic>JOINTS OR FITTINGS FOR PIPES</topic><topic>LIGHTING</topic><topic>MEANS FOR THERMAL INSULATION IN GENERAL</topic><topic>MECHANICAL ENGINEERING</topic><topic>MINING</topic><topic>OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS</topic><topic>PIPES</topic><topic>SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING</topic><topic>THERMAL INSULATION IN GENERAL</topic><topic>WEAPONS</topic><toplevel>online_resources</toplevel><creatorcontrib>ÖHRN, Anders</creatorcontrib><creatorcontrib>ANDERSSON, Lars</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>ÖHRN, Anders</au><au>ANDERSSON, Lars</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Drill pipe and drill string</title><date>2019-04-02</date><risdate>2019</risdate><abstract>The present invention relates to a drill pipe (1) comprising at least a central portion (2), a first end piece (3) and a second end piece (4), where the end pieces (3, 4) permit interconnection with mating parts of another drill pipe (1), said central portion (2) comprising a cylindrical tube, wherein said central portion (2) is arranged with an inner pipe (5) arranged at an inner wall (20) of said central portion (2) and having a wall thickness (t) which reduces the volume (V) of the void inside the central portion (2) with at least 10 %, more preferred at least 25 % and most preferred at least 50 %.</abstract><oa>free_for_read</oa></addata></record> |
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| language | eng |
| recordid | cdi_epo_espacenet_SE541084C2 |
| source | esp@cenet |
| subjects | BLASTING EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING ENGINEERING ELEMENTS AND UNITS FIXED CONSTRUCTIONS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING JOINTS OR FITTINGS FOR PIPES LIGHTING MEANS FOR THERMAL INSULATION IN GENERAL MECHANICAL ENGINEERING MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS PIPES SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING THERMAL INSULATION IN GENERAL WEAPONS |
| title | Drill pipe and drill string |
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