Investigation and remediation of active-clay contaminated sepiolite drilling muds

Altun G., OSGOUEI A. E.

APPLIED CLAY SCIENCE, vol.102, pp.238-245, 2014 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 102
  • Publication Date: 2014
  • Doi Number: 10.1016/j.clay.2014.10.002
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.238-245
  • Istanbul Technical University Affiliated: Yes


Unconventional gas and oil development has gained remarkable attention in recent years. However, the high content of active clays in shales makes drilling difficult. Since most formations drilled for oil and gas exploration are shales, active solid dispersion into the drilling mud is a common problem. This might results in severe problems, such as stuck pipes, circulation loss, excessive torque and drag, inadequate cuttings transport, poor log quality, poor primary cement job, and borehole instability.