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我们在施工利国八线ZKP—5号孔时，试用钻井粉堵漏，取得了较好的效果，简介如下。一、钻孔概况及岩石描述ZKP—5号孔设计孔深700米，孔内溶洞堆积物地段较多，钻进过程中虽然两次分别下入φ89套管37.40米，φ74套管253.02米，但仍然漏水，护孔堵漏仍是关键问题。钻孔所见主要岩石为石灰岩、蚀变闪长斑岩、花岗岩、泥灰岩、溶洞堆积物等。岩石大部破碎、钙化、局部绿泥石化、透辉石化，硬而脆碎，由于岩石受到挤压、破碎作用，岩芯易碎；在溶洞充填地段，堆积物松散，而且易坍塌，由于冲洗液的冲刷作用和钻具的回转，易超径。
We are in the construction of the eight-lane ZKP-5 hole, try drilling plugging, and achieved good results, as follows. First, the drilling overview and description of the rock ZKP-5 hole design hole depth of 700 meters, pore cave deposits more sections, although drilling into the process twice under the φ89 casing 37.40 meters, φ74 casing 253.02 meters, But still leaking, plugging plugging is still the key issue. The main rocks seen in the boreholes are limestone, altered dioritic porphyry, granite, marl, karst deposits and the like. The rocks are mostly crushed, calcified, partially chloritized, diopsided and petrified, hard and brittle. Due to the crushing and crushing of the rock, the core is fragile. In the cave filling area, the deposit is loose and collapses easily. The scouring effect of liquid and the rotation of drilling tools, easy to exceed diameter.