A Systematic Experimental Study of Acid Fracture Conductivity Academic Article uri icon

abstract

  • Summary The fracture conductivity created in the acid fracturing process is critical to the success of this stimulation method, but is difficult to predict. We have conducted a series of experiments in which core samples were acidized in a cell that allows for linear flow through a vertical fracture with fluid loss through the cores. The fracture conductivity created was then measured as a function of closure stress. We find that increased acid contact time sometimes results in lower fracture conductivity, fluid loss can increase fracture conductivity, and the Nierode-Kruk correlation1 accurately predicts the effects of rock embedment strength and closure stress on acid fracture conductivity. We also observed that high fracture conductivity is created when the acid forms a deep channel in the fracture.

published proceedings

  • SPE Production & Facilities

author list (cited authors)

  • Beg, M. S., Kunak, A. O., Gong, M., Zhu, D., & Hill, A. D.

citation count

  • 25

complete list of authors

  • Beg, MS||Kunak, AO||Gong, Ming||Zhu, Ding||Hill, AD

publication date

  • November 1998