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Title: Drilling and abandonment preparation of CO₂ storage wells – Experience from the Ketzin pilot site

At Ketzin, located west of Berlin, the GFZ German Centre for Geosciences is operating Europe's largest CO₂ research storage site. This pilot site has been developed since 2004 and is comprised of one combined injection/observation well and four monitoring wells. From June 2008 to August 2013, a total of 67 kilotons of CO₂ were safely injected into the sandstone units of the Upper Triassic Stuttgart Formation in a depth between 630 to 650 m. The paper discusses the well designs and lessons learned in drilling engineering and operations. The abandonment phase started in Ketzin with the first plug cementation of the observation well Ktzi 202 shortly after shut-in of CO₂ injection. The experience with the first CO₂ well killing operation will be reviewed.
Authors:
 [1] ;  [1] ;  [1] ;  [1] ;  [2]
  1. GFZ German Centre for Geoscience, Telegrafenberg, Potsdam (Germany)
  2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Publication Date:
OSTI Identifier:
1196869
Grant/Contract Number:
AC02-05CH11231
Type:
Accepted Manuscript
Journal Name:
Energy Procedia
Additional Journal Information:
Journal Volume: 63; Journal Issue: C; Journal ID: ISSN 1876-6102
Publisher:
Elsevier
Research Org:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES well design; permanent down-hole monitoring; Mud losses; cementation; perforation; abandonment; well killing