Wellhead seals
A wellhead sealing system comprises a casing (12), a tubing spool (16) and a bushing (22) between the casing (12) and the tubing spool (16). A first recess (24) is provided in the bushing (22) and a first casing seal (23) is mounted therein to act between the bushing (22) and the casing (12). A seco...
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| creator | JOHNSON, CLARENCE WILLIAM |
| description | A wellhead sealing system comprises a casing (12), a tubing spool (16) and a bushing (22) between the casing (12) and the tubing spool (16). A first recess (24) is provided in the bushing (22) and a first casing seal (23) is mounted therein to act between the bushing (22) and the casing (12). A second recess (26) is provided in the tubing spool (16) and a first bushing seal (25) is mounted therein to act between the tubing spool (16) and the bushing (22). The casing seal (23) has cylindrical inside (27) and outside (28) surfaces located generally at the inside and outside diameters of the seal (23). The cylindrical inside surface (27) is defined by a radially inwardly extending convex central protuberance (29) and opposed cylindrical flat surface areas (30) extending axially outwardly from the convex central protuberance (29) into first transition areas (31) extending to respective end surfaces (32). The cylindrical outside surface (28) is defined by a circumferential centrally located groove (33) flanked by axially outwardly extending flexible retaining flanges (34) forming second transition areas between the cylindrical outside surface (28) and the end surfaces (32). Spring means (35) extend around the inside circumference of the seal and are located adjacent each of the first transition areas (31). |
| format | Patent |
| fullrecord | <record><control><sourceid>epo_EVB</sourceid><recordid>TN_cdi_epo_espacenet_EP0334389A2</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>EP0334389A2</sourcerecordid><originalsourceid>FETCH-epo_espacenet_EP0334389A23</originalsourceid><addsrcrecordid>eNrjZOALT83JyUhNTFEoTk3MKeZhYE0DUqm8UJqbQcHNNcTZQze1ID8-tbggMTk1L7Uk3jXAwNjYxNjC0tHImAglABUgHfk</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>patent</recordtype></control><display><type>patent</type><title>Wellhead seals</title><source>esp@cenet</source><creator>JOHNSON, CLARENCE WILLIAM</creator><creatorcontrib>JOHNSON, CLARENCE WILLIAM</creatorcontrib><description>A wellhead sealing system comprises a casing (12), a tubing spool (16) and a bushing (22) between the casing (12) and the tubing spool (16). A first recess (24) is provided in the bushing (22) and a first casing seal (23) is mounted therein to act between the bushing (22) and the casing (12). A second recess (26) is provided in the tubing spool (16) and a first bushing seal (25) is mounted therein to act between the tubing spool (16) and the bushing (22). The casing seal (23) has cylindrical inside (27) and outside (28) surfaces located generally at the inside and outside diameters of the seal (23). The cylindrical inside surface (27) is defined by a radially inwardly extending convex central protuberance (29) and opposed cylindrical flat surface areas (30) extending axially outwardly from the convex central protuberance (29) into first transition areas (31) extending to respective end surfaces (32). The cylindrical outside surface (28) is defined by a circumferential centrally located groove (33) flanked by axially outwardly extending flexible retaining flanges (34) forming second transition areas between the cylindrical outside surface (28) and the end surfaces (32). Spring means (35) extend around the inside circumference of the seal and are located adjacent each of the first transition areas (31).</description><language>eng ; fre ; ger</language><subject>BLASTING ; CYLINDERS ; 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 ; LIGHTING ; MECHANICAL ENGINEERING ; MINING ; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS ; PISTONS ; SEALINGS ; THERMAL INSULATION IN GENERAL ; WEAPONS</subject><creationdate>1989</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=19890927&DB=EPODOC&CC=EP&NR=0334389A2$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76419</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19890927&DB=EPODOC&CC=EP&NR=0334389A2$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>JOHNSON, CLARENCE WILLIAM</creatorcontrib><title>Wellhead seals</title><description>A wellhead sealing system comprises a casing (12), a tubing spool (16) and a bushing (22) between the casing (12) and the tubing spool (16). A first recess (24) is provided in the bushing (22) and a first casing seal (23) is mounted therein to act between the bushing (22) and the casing (12). A second recess (26) is provided in the tubing spool (16) and a first bushing seal (25) is mounted therein to act between the tubing spool (16) and the bushing (22). The casing seal (23) has cylindrical inside (27) and outside (28) surfaces located generally at the inside and outside diameters of the seal (23). The cylindrical inside surface (27) is defined by a radially inwardly extending convex central protuberance (29) and opposed cylindrical flat surface areas (30) extending axially outwardly from the convex central protuberance (29) into first transition areas (31) extending to respective end surfaces (32). The cylindrical outside surface (28) is defined by a circumferential centrally located groove (33) flanked by axially outwardly extending flexible retaining flanges (34) forming second transition areas between the cylindrical outside surface (28) and the end surfaces (32). Spring means (35) extend around the inside circumference of the seal and are located adjacent each of the first transition areas (31).</description><subject>BLASTING</subject><subject>CYLINDERS</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>LIGHTING</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>PISTONS</subject><subject>SEALINGS</subject><subject>THERMAL INSULATION IN GENERAL</subject><subject>WEAPONS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1989</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZOALT83JyUhNTFEoTk3MKeZhYE0DUqm8UJqbQcHNNcTZQze1ID8-tbggMTk1L7Uk3jXAwNjYxNjC0tHImAglABUgHfk</recordid><startdate>19890927</startdate><enddate>19890927</enddate><creator>JOHNSON, CLARENCE WILLIAM</creator><scope>EVB</scope></search><sort><creationdate>19890927</creationdate><title>Wellhead seals</title><author>JOHNSON, CLARENCE WILLIAM</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_EP0334389A23</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; fre ; ger</language><creationdate>1989</creationdate><topic>BLASTING</topic><topic>CYLINDERS</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>LIGHTING</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>PISTONS</topic><topic>SEALINGS</topic><topic>THERMAL INSULATION IN GENERAL</topic><topic>WEAPONS</topic><toplevel>online_resources</toplevel><creatorcontrib>JOHNSON, CLARENCE WILLIAM</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>JOHNSON, CLARENCE WILLIAM</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Wellhead seals</title><date>1989-09-27</date><risdate>1989</risdate><abstract>A wellhead sealing system comprises a casing (12), a tubing spool (16) and a bushing (22) between the casing (12) and the tubing spool (16). A first recess (24) is provided in the bushing (22) and a first casing seal (23) is mounted therein to act between the bushing (22) and the casing (12). A second recess (26) is provided in the tubing spool (16) and a first bushing seal (25) is mounted therein to act between the tubing spool (16) and the bushing (22). The casing seal (23) has cylindrical inside (27) and outside (28) surfaces located generally at the inside and outside diameters of the seal (23). The cylindrical inside surface (27) is defined by a radially inwardly extending convex central protuberance (29) and opposed cylindrical flat surface areas (30) extending axially outwardly from the convex central protuberance (29) into first transition areas (31) extending to respective end surfaces (32). The cylindrical outside surface (28) is defined by a circumferential centrally located groove (33) flanked by axially outwardly extending flexible retaining flanges (34) forming second transition areas between the cylindrical outside surface (28) and the end surfaces (32). Spring means (35) extend around the inside circumference of the seal and are located adjacent each of the first transition areas (31).</abstract><oa>free_for_read</oa></addata></record> |
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| language | eng ; fre ; ger |
| recordid | cdi_epo_espacenet_EP0334389A2 |
| source | esp@cenet |
| subjects | BLASTING CYLINDERS 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 LIGHTING MECHANICAL ENGINEERING MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS PISTONS SEALINGS THERMAL INSULATION IN GENERAL WEAPONS |
| title | Wellhead seals |
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