Study on Mechanical Model of Borehole Confining Pressure of Dual-Porosity Considering Seepage
Accurately describing wellbore sur-rounding rock mechanics state plays an important role in the research on sidewall stability. Considering the failure behavior of the wellbore rock mass, we divide the rock area to failure zone, damage zone and elastic range. We establish dual porosity with fracture wellbore rock stress calculation model according to failure theory. We calculate an production well ambient stress in a given block, the result of which coincides with actual result measured in field.
Helen Zhang and David Jin
Z. X. Lan "Study on Mechanical Model of Borehole Confining Pressure of Dual-Porosity Considering Seepage", Advanced Materials Research, Vol. 322, pp. 11-14, 2011