摘要
根据怀利时间平均公式,采用声波时差差值与岩心模拟孔隙度(φ_m)之间的关系,建立了计算声波孔隙度的新经验公式。它比直接用怀利时间平均公式算出的声波孔隙度更精确.文中列举了川东卧龙河气田Tc_1~5～Tc_3~4气藏利用新经验公式的结果,其绝对误差值90%的点子小于1.5%。
According to the fundamentals of Wyllie's equation, a ncw empirical relation betweencore analysis porosity and acoustic time difference has been built. The porosity data obtainedaccording to the new relationship are more accurate than those according to Wyllie'sequation. Results from the gas bearing zone T_(c1)~5～T_(c3)~4 of Wolonghe Gas Field in eastSichuan area show that the errors of ninety percent data are less than 1.5%.
