松南气田深层天然裂缝比较发育,这是促使钻井液漏失进地层的原因之一。钻遇的裂缝型地层会增加井漏发生的几率,同时地层漏失压力低导致承压能力降低。针对裂缝发育地层漏失问题,根据堵漏一般原则,选择不同材料组合与级配,从而制定出一系列高酸溶率的堵漏配方,然后利用堵漏模拟装置进行室内承压堵漏试验,通过试验结果评价不同配方的堵漏效果,优选堵漏配方。 The deep natural fractures in Songnan gas field are relatively developed, which is one of the reasons for the drilling fluid to leak into the formation. The fractured strata encountered will increase the probability of occurrence of the well leakage, and the low formation pressure loss will lead to the decrease of bearing capacity. According to the general principle of plugging, a series of plugging formulas with high acid-soluble rate were selected according to the principle of plugging, and then the plugging leakage simulating device was used to carry out indoor pressure plugging test. Test results evaluate the plugging effect of different formulations, preferably plugging formula.