在炼焦过程中，煤在焦炉中干馏软化熔融后再次固化，形成焦炭组织。煤的粘结性是表示软化熔融现象的指标，测定煤粘结性的方法主要有采用基氏塑性仪的流动度试验方法和采用膨胀计的膨胀度试验方法，并且成为试验标准（JIS M 8801）。此...在炼焦过程中，煤在焦炉中干馏软化熔融后再次固化，形成焦炭组织。煤的粘结性是表示软化熔融现象的指标，测定煤粘结性的方法主要有采用基氏塑性仪的流动度试验方法和采用膨胀计的膨胀度试验方法，并且成为试验标准（JIS M 8801）。此外。对流动度极低的非、弱粘结煤通常采用罗加试验法（JIS M 8801）和粘结力系数测定其粘结性。展开更多
The gas saturation in flushed zone of gas layers is low and the observed gas signal is weak because the mud filtrate invasion reduces the native gas saturation.A(T2,T1/T2) two-dimensional nuclear magnetic resonance(NM...The gas saturation in flushed zone of gas layers is low and the observed gas signal is weak because the mud filtrate invasion reduces the native gas saturation.A(T2,T1/T2) two-dimensional nuclear magnetic resonance(NMR) method of typing gas layers was developed.The performance of(T2,T1/T2) method for typing gas at different kinds of reservoirs,signal-to-noise ratios and gas saturations was studied in details through numerical simulation.The results show that(T2,T1/T2) method is especially useful for identifying gas formations.It is suitable for typing lower gas saturation formation where drilling mud filtrate flushes strongly.展开更多
文摘在炼焦过程中，煤在焦炉中干馏软化熔融后再次固化，形成焦炭组织。煤的粘结性是表示软化熔融现象的指标，测定煤粘结性的方法主要有采用基氏塑性仪的流动度试验方法和采用膨胀计的膨胀度试验方法，并且成为试验标准（JIS M 8801）。此外。对流动度极低的非、弱粘结煤通常采用罗加试验法（JIS M 8801）和粘结力系数测定其粘结性。
基金National Natural Science Foundation of China(Grant No.40674075)Petro China Company limited Innovation Foundation(Grant No.07-06D-01-04-01-07)
文摘The gas saturation in flushed zone of gas layers is low and the observed gas signal is weak because the mud filtrate invasion reduces the native gas saturation.A(T2,T1/T2) two-dimensional nuclear magnetic resonance(NMR) method of typing gas layers was developed.The performance of(T2,T1/T2) method for typing gas at different kinds of reservoirs,signal-to-noise ratios and gas saturations was studied in details through numerical simulation.The results show that(T2,T1/T2) method is especially useful for identifying gas formations.It is suitable for typing lower gas saturation formation where drilling mud filtrate flushes strongly.
