A non-destructive method for mapping formation damage

M. A. Khan, S. Z. Jilani, H. Menouar, A. A. Al-Majed

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


Applicability of an ultrasonic method for non-destructive mapping of formation damage is reported for the first time. Oil-saturated and 'mud'-damaged Berea rock samples were prepared in the laboratory using a leak-off apparatus and machined dry rocks. The depth of 'mud invasion' was monitored under varying conditions of overbalanced pressure ΔP and contamination time ΔT. An interesting observation is that a region of ΔP ∼ 2.07 × 103 kPa produces minimum invasion depth under the conditions investigated. The results are discussed in the context of horizontal wells.

Original languageEnglish
Pages (from-to)321-328
Number of pages8
Issue number5
StatePublished - Aug 2001


  • Formation damage
  • Horizontal wells
  • Mud-invasion depth
  • Non-destructive evaluation
  • Ultrasonic mapping


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