Selection of candidate wells for re-fracturing in tight gas sand reservoirs using fuzzy inference

ARTUN Emre,KULGA Burak

Table 2 Rules to characterize the hydraulic-fracture quality index.

Rules Rules parameters/index categories Fracture length Fracture permeability Fracture width Hyd. Frac. Qual. Index 1 HIGH HIGH HIGH HIGH 2 HIGH HIGH MID HIGH 3 HIGH HIGH LOW HIGH 4 HIGH MID HIGH HIGH 5 HIGH MID MID MID 6 HIGH MID LOW MID 7 HIGH LOW HIGH MID 8 HIGH LOW MID MID 9 HIGH LOW LOW MID 10 MID HIGH HIGH HIGH 11 MID HIGH MID MID 12 MID HIGH LOW MID 13 MID MID HIGH MID 14 MID MID MID MID 15 MID MID LOW MID 16 MID LOW HIGH MID 17 MID LOW MID MID 18 MID LOW LOW LOW 19 LOW HIGH HIGH HIGH 20 LOW HIGH MID MID 21 LOW HIGH LOW LOW 22 LOW MID HIGH MID 23 LOW MID MID MID 24 LOW MID LOW LOW 25 LOW LOW HIGH LOW 26 LOW LOW MID LOW 27 LOW LOW LOW LOW