Apparatus for removing a section of casing or lining from a well-bore, and methods

Apparatus for removing a section of casing or lining from a well-bore, and methods

Apparatus and method for removing a section of casing or lining from a wellbore. A tubular mandrel has a sliding assembly mounted thereon with grippers coupled to the assembly so that the grippers can be moved between an engaged configuration were they grip the inner wall of the casing section and a...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
1. Verfasser: Evertsen, Steffen
Format: Patent
Sprache:eng
Schlagworte:
EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
FIXED CONSTRUCTIONS
MINING
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
container_end_page
container_issue
container_start_page
container_title
container_volume
creator Evertsen, Steffen
description Apparatus and method for removing a section of casing or lining from a wellbore. A tubular mandrel has a sliding assembly mounted thereon with grippers coupled to the assembly so that the grippers can be moved between an engaged configuration were they grip the inner wall of the casing section and a disengaged position were they are held away from the inner wall. A switcher is mounted on the mandrel which operates on entering the casing section to lock the grippers in the disengaged position so that cutting of the casing may be done. On pulling the switcher from the casing section, the grippers are automatically engaged and grip the upper end of casing section so that it can be removed. Additional locking arrangements are described which, by rotation, maintain the grippers in the disengaged position regardless of the location of the switcher.
format Patent
fullrecord <record><control><sourceid>epo_EVB</sourceid><recordid>TN_cdi_epo_espacenet_AU2017252204BB2</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>AU2017252204BB2</sourcerecordid><originalsourceid>FETCH-epo_espacenet_AU2017252204BB23</originalsourceid><addsrcrecordid>eNqNijEKAjEQRdNYiHqHKSxdWKNivSuKtWi9jNmJBpJMyES9vrvgAaze5_03VZcmJcxYXgKWM2QK_HbxAQhCpjiOwBYMyuiG37s4Lps5DMmHvK_unGkFGHsIVJ7cy1xNLHqhxY8ztTwdr4dzRYk7koSGIpWuuel6vdc7rett2-rNn9kX_b44dw</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>patent</recordtype></control><display><type>patent</type><title>Apparatus for removing a section of casing or lining from a well-bore, and methods</title><source>esp@cenet</source><creator>Evertsen, Steffen</creator><creatorcontrib>Evertsen, Steffen</creatorcontrib><description>Apparatus and method for removing a section of casing or lining from a wellbore. A tubular mandrel has a sliding assembly mounted thereon with grippers coupled to the assembly so that the grippers can be moved between an engaged configuration were they grip the inner wall of the casing section and a disengaged position were they are held away from the inner wall. A switcher is mounted on the mandrel which operates on entering the casing section to lock the grippers in the disengaged position so that cutting of the casing may be done. On pulling the switcher from the casing section, the grippers are automatically engaged and grip the upper end of casing section so that it can be removed. Additional locking arrangements are described which, by rotation, maintain the grippers in the disengaged position regardless of the location of the switcher.</description><language>eng</language><subject>EARTH DRILLING ; EARTH DRILLING, e.g. DEEP DRILLING ; FIXED CONSTRUCTIONS ; MINING ; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS</subject><creationdate>2022</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&amp;date=20220721&amp;DB=EPODOC&amp;CC=AU&amp;NR=2017252204B2$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25563,76318</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=20220721&amp;DB=EPODOC&amp;CC=AU&amp;NR=2017252204B2$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>Evertsen, Steffen</creatorcontrib><title>Apparatus for removing a section of casing or lining from a well-bore, and methods</title><description>Apparatus and method for removing a section of casing or lining from a wellbore. A tubular mandrel has a sliding assembly mounted thereon with grippers coupled to the assembly so that the grippers can be moved between an engaged configuration were they grip the inner wall of the casing section and a disengaged position were they are held away from the inner wall. A switcher is mounted on the mandrel which operates on entering the casing section to lock the grippers in the disengaged position so that cutting of the casing may be done. On pulling the switcher from the casing section, the grippers are automatically engaged and grip the upper end of casing section so that it can be removed. Additional locking arrangements are described which, by rotation, maintain the grippers in the disengaged position regardless of the location of the switcher.</description><subject>EARTH DRILLING</subject><subject>EARTH DRILLING, e.g. DEEP DRILLING</subject><subject>FIXED CONSTRUCTIONS</subject><subject>MINING</subject><subject>OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2022</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNqNijEKAjEQRdNYiHqHKSxdWKNivSuKtWi9jNmJBpJMyES9vrvgAaze5_03VZcmJcxYXgKWM2QK_HbxAQhCpjiOwBYMyuiG37s4Lps5DMmHvK_unGkFGHsIVJ7cy1xNLHqhxY8ztTwdr4dzRYk7koSGIpWuuel6vdc7rett2-rNn9kX_b44dw</recordid><startdate>20220721</startdate><enddate>20220721</enddate><creator>Evertsen, Steffen</creator><scope>EVB</scope></search><sort><creationdate>20220721</creationdate><title>Apparatus for removing a section of casing or lining from a well-bore, and methods</title><author>Evertsen, Steffen</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_AU2017252204BB23</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2022</creationdate><topic>EARTH DRILLING</topic><topic>EARTH DRILLING, e.g. DEEP DRILLING</topic><topic>FIXED CONSTRUCTIONS</topic><topic>MINING</topic><topic>OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS</topic><toplevel>online_resources</toplevel><creatorcontrib>Evertsen, Steffen</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Evertsen, Steffen</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Apparatus for removing a section of casing or lining from a well-bore, and methods</title><date>2022-07-21</date><risdate>2022</risdate><abstract>Apparatus and method for removing a section of casing or lining from a wellbore. A tubular mandrel has a sliding assembly mounted thereon with grippers coupled to the assembly so that the grippers can be moved between an engaged configuration were they grip the inner wall of the casing section and a disengaged position were they are held away from the inner wall. A switcher is mounted on the mandrel which operates on entering the casing section to lock the grippers in the disengaged position so that cutting of the casing may be done. On pulling the switcher from the casing section, the grippers are automatically engaged and grip the upper end of casing section so that it can be removed. Additional locking arrangements are described which, by rotation, maintain the grippers in the disengaged position regardless of the location of the switcher.</abstract><oa>free_for_read</oa></addata></record>
fulltext fulltext_linktorsrc
identifier
ispartof
issn
language eng
recordid cdi_epo_espacenet_AU2017252204BB2
source esp@cenet
subjects EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
FIXED CONSTRUCTIONS
MINING
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
title Apparatus for removing a section of casing or lining from a well-bore, and methods
url https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-10T11%3A27%3A39IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-epo_EVB&rft_val_fmt=info:ofi/fmt:kev:mtx:patent&rft.genre=patent&rft.au=Evertsen,%20Steffen&rft.date=2022-07-21&rft_id=info:doi/&rft_dat=%3Cepo_EVB%3EAU2017252204BB2%3C/epo_EVB%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_id=info:pmid/&rfr_iscdi=true