QT-16Cr Coiled Tubing: A Review of Field Applications and Laboratory Testing

Martin, John; Arnam, William van; Normoyle, Brian

doi:10.2523/99857-ms

Cited by 3 publications

(3 citation statements)

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“…Corrosion rates become even more severe in the presence of produced field salt water as previously documented (Martin 2006). …”

Section: Metallurgy Selection and Justificationmentioning

confidence: 86%

“…• 91 wells had CSCT velocity strings at one time Acting on the observed high failure rate of CSCT strings in Lobo conditions, QT-16Cr was considered as a corrosion resistant alloy alternative for the velocity string application due to the metallurgy and demonstrated resistance to CO 2 corrosion (Martin 2006). …”

Section: Metallurgy Selection and Justificationmentioning

confidence: 99%

“…In 2004, stainless steel alloy coiled tubing became available (Martin 2003, Martin 2006) that was lower cost than many corrosion resistant alloys prior to that time. ConocoPhillips then reinitiated work to install the lower cost corrosion resistant coiled tubing (CRCT) velocity strings in South Texas candidate wells.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Deliquification of South Texas Gas Wells Using Corrosion Resistant Coiled Tubing: A Six Year Case History

Poppenhagen

Harms

Wilkinson

et al. 2010

Proceedings of SPE/ICoTA Coiled Tubing and Well Intervention Conference and Exhibition

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Running coiled tubing can be an effective tool to deliquify gas wells, but this practice was discontinued in early 2000 in ConocoPhillips Lobo Field in South Texas because of problems experienced due to CO 2 corrosion with standard coiled tubing metallurgy. Since 2004, ConocoPhillips has installed 90 corrosion resistant coiled tubing velocity strings as an alternative to conventional carbon steel coiled tubing. These installations have yielded 5 mmcfd in incremental gas rate and the change to a corrosion resistant metallurgy has drastically reduced the high failure rate and costly workovers that resulted from previous carbon steel installations. Various key learnings including candidate selection criteria and future application recommendations will be presented in addition to representative well types and production profiles. Metallurgy comparisons, post-use inspection findings and fullcycle cost implications will also be presented.

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“…Corrosion rates become even more severe in the presence of produced field salt water as previously documented (Martin 2006). …”

Section: Metallurgy Selection and Justificationmentioning

confidence: 86%

Section: Metallurgy Selection and Justificationmentioning

confidence: 99%