In view of the fact that most of the filter media of existing plugging evaluation instruments use steel plates or steel balls, which cannot truly simulate the characteristics of the formation, a new type of TL-1 high ...In view of the fact that most of the filter media of existing plugging evaluation instruments use steel plates or steel balls, which cannot truly simulate the characteristics of the formation, a new type of TL-1 high temperature and high pressure plugging instrument has been developed. The filter medium of the instrument is the natural stone with different cracks and quartz sand beds with different particle sizes, which can better simulate the adsorption and hang-up effect of the formation on the plugging agent. It is possible to evaluate the plugging effect, pressure-bearing capacity and return pressure of the plugging slurry for different cracks and sand beds of different sizes under different temperatures and pressures. Using new and old instruments to evaluate the plugging effect of the same plugging slurry, it is found that the plugging effect is different from the distribution of the plugging material on the crack surface, the plugging effect and the pressure bearing capacity. The instrument is stable and reliable in operation and simple in operation. It is a new instrument for conducting research on anti-leakage plugging materials and anti-leakage plugging drilling fluid systems.展开更多
通过实验室研究确定了双激发无机调堵剂的最佳配方:15%矿渣+0.8%激活剂+4%分散剂+2.5%缓凝剂。固化时间32h,固化强度大于1.4MPa。调堵剂初始粘度36 m Pa·s,85℃养护18h粘度小于320m Pa·s。对不同渗透率岩芯,调堵剂的堵水率大...通过实验室研究确定了双激发无机调堵剂的最佳配方:15%矿渣+0.8%激活剂+4%分散剂+2.5%缓凝剂。固化时间32h,固化强度大于1.4MPa。调堵剂初始粘度36 m Pa·s,85℃养护18h粘度小于320m Pa·s。对不同渗透率岩芯,调堵剂的堵水率大于90%。展开更多
通过试验研究确定了吉林油田双激发无机调剖剂的最佳配方(w):15%矿渣+0.8%激活剂+4%分散剂+2.5%缓凝剂。评价结果显示:固化时间32 h,固化强度大于1.4 MPa;调剖剂初始黏度36 m Pa·s,85℃养护18 h后黏度小于320 m Pa·s;当矿渣...通过试验研究确定了吉林油田双激发无机调剖剂的最佳配方(w):15%矿渣+0.8%激活剂+4%分散剂+2.5%缓凝剂。评价结果显示:固化时间32 h,固化强度大于1.4 MPa;调剖剂初始黏度36 m Pa·s,85℃养护18 h后黏度小于320 m Pa·s;当矿渣在调剖剂浆液中质量分数大于8%时,对不同渗透率岩心的封堵率大于90%。展开更多
文摘In view of the fact that most of the filter media of existing plugging evaluation instruments use steel plates or steel balls, which cannot truly simulate the characteristics of the formation, a new type of TL-1 high temperature and high pressure plugging instrument has been developed. The filter medium of the instrument is the natural stone with different cracks and quartz sand beds with different particle sizes, which can better simulate the adsorption and hang-up effect of the formation on the plugging agent. It is possible to evaluate the plugging effect, pressure-bearing capacity and return pressure of the plugging slurry for different cracks and sand beds of different sizes under different temperatures and pressures. Using new and old instruments to evaluate the plugging effect of the same plugging slurry, it is found that the plugging effect is different from the distribution of the plugging material on the crack surface, the plugging effect and the pressure bearing capacity. The instrument is stable and reliable in operation and simple in operation. It is a new instrument for conducting research on anti-leakage plugging materials and anti-leakage plugging drilling fluid systems.
文摘通过试验研究确定了吉林油田双激发无机调剖剂的最佳配方(w):15%矿渣+0.8%激活剂+4%分散剂+2.5%缓凝剂。评价结果显示:固化时间32 h,固化强度大于1.4 MPa;调剖剂初始黏度36 m Pa·s,85℃养护18 h后黏度小于320 m Pa·s;当矿渣在调剖剂浆液中质量分数大于8%时,对不同渗透率岩心的封堵率大于90%。
