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| Titel |
Thermal effects during CO2 injection and well cementing at Ketzin |
| VerfasserIn |
J. Henninges, A. Kopp, E. Le Bastard, W. Brandt |
| Konferenz |
EGU General Assembly 2009
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 11 (2009) |
| Datensatznummer |
250029324
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| Zusammenfassung |
| Within the CO2SINK project, borehole temperature monitoring is performed to derive
information about in-situ formation temperatures and to detect processes related to the
injection and movement of CO2 in the subsurface. Both the injection well and the
two observation wells at the Ketzin site are equipped with permanent fiber-optic
sensor cables for distributed temperature sensing (DTS). Using DTS technology,
quasi-continuous temperature profiles can be measured on-line along the entire length of
the wells with high temporal and spatial resolution. The DTS sensor cables are
permanently installed behind the borehole casing, which, in contrast to conventional
wireline logging, offers the advantage of full access to the well during technical
operations. Apart from long-term temperature monitoring during the injection process,
this also allowed for better control of the process of casing cementation, which is
crucial to ensure the required sealing capability of the borehole completion for CO2
storage wells. Here we present results of the DTS monitoring performed during
cementing operations and during the first 10 months of CO2 injection at Ketzin. |
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