英南 2井在完井试油和酸化改造后储层受到了严重伤害 ,产量明显降低 ,通过实验手段 ,对造成伤害的原因进行了分析。认为造成该井储层伤害的主要原因是水锁造成的伤害 ,其次水敏、酸敏以及酸化过程中的二次沉淀也具有一定的伤害。要解决该类储层的伤害问题 ,可采用油基钻井液施工。 In South Well No.2, the reservoir was severely damaged after completion of oil testing and acidizing. The yield was obviously reduced. The causes of the damage were analyzed through experiments. It is considered that the main reason of reservoir damage caused by the well is the damage caused by the water lock, and secondly, the water precipitation, acid sensitivity and secondary precipitation in the acidification process also have some injuries. To solve the damage of such reservoirs, oil-based drilling fluid construction can be adopted.