Stability of an Openhole Completed in a Limestone Reservoir with and without Acid Treatments Conference Paper uri icon

abstract

  • The stability of an openhole completion in a limestone reservoir was investigated. The stability of the borehole after acid treatment was also studied. The stability study was conducted by simulating a horizontal well with three different principal in-situ stresses. It was found that boreholes in a limestone induce a shear failure at the borehole surface after a pore collapse is induced. Because of this highly ductile shear failure, a horizontal well is stable even though the ratio of effective horizontal and vertical stress is high. It was also observed that an openhole remains stable even after acidization.

published proceedings

  • Proceedings - SPE Annual Technical Conference and Exhibition

author list (cited authors)

  • Morita, N., Doi, T., & Kinoshita, T.

complete list of authors

  • Morita, N||Doi, T||Kinoshita, T

publication date

  • December 2002