Casing influence while measuring in situ reservoir compaction

P. Macini, E. Mesini, V. A. Salomoni, B. A. Schrefler

Research output: Contribution to journalArticle

9 Scopus citations

Abstract

In situ measurements of soil and rock compressibility through radioactive marker techniques (RMT) are here discussed. Compressibility is the main parameter governing compaction of sediments undergoing stress state variations, particularly when fluid withdrawal is considered. Numerical analyses of land subsidence phenomena from underground fluid extraction are strictly linked to the material parameters adopted, and consequently the results are strongly affected by the compressibility values used in the mathematical model. It is here proved that the presence of a fully cased hole generates perturbations of the deformations in a large area around the borehole, even accepting an elastic behaviour of the surrounding rocks. Additionally, elasto-plasticity is taken into account to further confirm the statement.

Original languageEnglish (US)
Pages (from-to)40-54
Number of pages15
JournalJournal of Petroleum Science and Engineering
Volume50
Issue number1
DOIs
StatePublished - Jan 16 2006

Keywords

  • Compressibility
  • In situ measurement
  • Land subsidence
  • Radioactive markers

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Fuel Technology

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