问答题
简答题
翻译：The HF-HCI mixture (usually 3-percent HF and 12-percent HCI) then is injected. The HF reacts with calys, sand, drilling mud, or cement filtrate to improve permeability near the well-bore.The HCI will not react and is present to keep the PH low, preventing precipitation of HF reaction products. Sent to keep the PH low, preventing precipitation of HF reaction products.
【参考答案】
随后，HF-HCI混合物(一般3%HF+12%HCL)注入。HF与与黏土、砂、钻井泥浆或水泥漓液反应，以改变近井地带的渗......
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