METHOD AND APPARATUS FOR WELL CASING INSPECTION

METHOD AND APPARATUS FOR WELL CASING INSPECTION

"METHOD AND APPARATUS FOR WELL CASING INSPECTION" An oil and gas well casing inspection tool is disclosed. The casing inspection tool comprises a body; inner and outer contact rollers extending from the body; means for generating a current between the outer contacts; and means for measurin...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: HAMBERG, ALLAN, THOMAS, ELMER L, CARRUTH, HENRY T., JR, PETERSON, MITCHELL F
Format: Patent
Sprache:eng ; fre
Schlagworte:
MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
PHYSICS
TESTING
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 HAMBERG, ALLAN
THOMAS, ELMER L
CARRUTH, HENRY T., JR
PETERSON, MITCHELL F
description "METHOD AND APPARATUS FOR WELL CASING INSPECTION" An oil and gas well casing inspection tool is disclosed. The casing inspection tool comprises a body; inner and outer contact rollers extending from the body; means for generating a current between the outer contacts; and means for measuring a potential difference between the inner contacts. To enhance the accuracy of the device, capacitance means are used downhole to increase the amount of current that can be supplied to the casing. Leaf springs engage the contact rollers to maintain a clean connection between the body and the casing. Signal coding and decoding means are also disclosed.
format Patent
fullrecord <record><control><sourceid>epo_EVB</sourceid><recordid>TN_cdi_epo_espacenet_CA1282116C</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>CA1282116C</sourcerecordid><originalsourceid>FETCH-epo_espacenet_CA1282116C3</originalsourceid><addsrcrecordid>eNrjZND3dQ3x8HdRcPQD4oAAxyDHkNBgBTf_IIVwVx8fBWfHYE8_dwVPv-AAV-cQT38_HgbWtMSc4lReKM3NIO_mGuLsoZtakB-fWlyQmJyal1oS7-xoaGRhZGho5mxMWAUAZZAk9w</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>patent</recordtype></control><display><type>patent</type><title>METHOD AND APPARATUS FOR WELL CASING INSPECTION</title><source>esp@cenet</source><creator>HAMBERG, ALLAN ; THOMAS, ELMER L ; CARRUTH, HENRY T., JR ; PETERSON, MITCHELL F</creator><creatorcontrib>HAMBERG, ALLAN ; THOMAS, ELMER L ; CARRUTH, HENRY T., JR ; PETERSON, MITCHELL F</creatorcontrib><description>"METHOD AND APPARATUS FOR WELL CASING INSPECTION" An oil and gas well casing inspection tool is disclosed. The casing inspection tool comprises a body; inner and outer contact rollers extending from the body; means for generating a current between the outer contacts; and means for measuring a potential difference between the inner contacts. To enhance the accuracy of the device, capacitance means are used downhole to increase the amount of current that can be supplied to the casing. Leaf springs engage the contact rollers to maintain a clean connection between the body and the casing. Signal coding and decoding means are also disclosed.</description><edition>5</edition><language>eng ; fre</language><subject>MEASURING ; MEASURING ELECTRIC VARIABLES ; MEASURING MAGNETIC VARIABLES ; PHYSICS ; TESTING</subject><creationdate>1991</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=19910326&amp;DB=EPODOC&amp;CC=CA&amp;NR=1282116C$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76290</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=19910326&amp;DB=EPODOC&amp;CC=CA&amp;NR=1282116C$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>HAMBERG, ALLAN</creatorcontrib><creatorcontrib>THOMAS, ELMER L</creatorcontrib><creatorcontrib>CARRUTH, HENRY T., JR</creatorcontrib><creatorcontrib>PETERSON, MITCHELL F</creatorcontrib><title>METHOD AND APPARATUS FOR WELL CASING INSPECTION</title><description>"METHOD AND APPARATUS FOR WELL CASING INSPECTION" An oil and gas well casing inspection tool is disclosed. The casing inspection tool comprises a body; inner and outer contact rollers extending from the body; means for generating a current between the outer contacts; and means for measuring a potential difference between the inner contacts. To enhance the accuracy of the device, capacitance means are used downhole to increase the amount of current that can be supplied to the casing. Leaf springs engage the contact rollers to maintain a clean connection between the body and the casing. Signal coding and decoding means are also disclosed.</description><subject>MEASURING</subject><subject>MEASURING ELECTRIC VARIABLES</subject><subject>MEASURING MAGNETIC VARIABLES</subject><subject>PHYSICS</subject><subject>TESTING</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1991</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZND3dQ3x8HdRcPQD4oAAxyDHkNBgBTf_IIVwVx8fBWfHYE8_dwVPv-AAV-cQT38_HgbWtMSc4lReKM3NIO_mGuLsoZtakB-fWlyQmJyal1oS7-xoaGRhZGho5mxMWAUAZZAk9w</recordid><startdate>19910326</startdate><enddate>19910326</enddate><creator>HAMBERG, ALLAN</creator><creator>THOMAS, ELMER L</creator><creator>CARRUTH, HENRY T., JR</creator><creator>PETERSON, MITCHELL F</creator><scope>EVB</scope></search><sort><creationdate>19910326</creationdate><title>METHOD AND APPARATUS FOR WELL CASING INSPECTION</title><author>HAMBERG, ALLAN ; THOMAS, ELMER L ; CARRUTH, HENRY T., JR ; PETERSON, MITCHELL F</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_CA1282116C3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; fre</language><creationdate>1991</creationdate><topic>MEASURING</topic><topic>MEASURING ELECTRIC VARIABLES</topic><topic>MEASURING MAGNETIC VARIABLES</topic><topic>PHYSICS</topic><topic>TESTING</topic><toplevel>online_resources</toplevel><creatorcontrib>HAMBERG, ALLAN</creatorcontrib><creatorcontrib>THOMAS, ELMER L</creatorcontrib><creatorcontrib>CARRUTH, HENRY T., JR</creatorcontrib><creatorcontrib>PETERSON, MITCHELL F</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>HAMBERG, ALLAN</au><au>THOMAS, ELMER L</au><au>CARRUTH, HENRY T., JR</au><au>PETERSON, MITCHELL F</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>METHOD AND APPARATUS FOR WELL CASING INSPECTION</title><date>1991-03-26</date><risdate>1991</risdate><abstract>"METHOD AND APPARATUS FOR WELL CASING INSPECTION" An oil and gas well casing inspection tool is disclosed. The casing inspection tool comprises a body; inner and outer contact rollers extending from the body; means for generating a current between the outer contacts; and means for measuring a potential difference between the inner contacts. To enhance the accuracy of the device, capacitance means are used downhole to increase the amount of current that can be supplied to the casing. Leaf springs engage the contact rollers to maintain a clean connection between the body and the casing. Signal coding and decoding means are also disclosed.</abstract><edition>5</edition><oa>free_for_read</oa></addata></record>
fulltext fulltext_linktorsrc
identifier
ispartof
issn
language eng ; fre
recordid cdi_epo_espacenet_CA1282116C
source esp@cenet
subjects MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
PHYSICS
TESTING
title METHOD AND APPARATUS FOR WELL CASING INSPECTION
url https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-29T18%3A45%3A18IST&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=HAMBERG,%20ALLAN&rft.date=1991-03-26&rft_id=info:doi/&rft_dat=%3Cepo_EVB%3ECA1282116C%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