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瓦斯抽采是煤矿安全开采、预防瓦斯事态的重要技术措施。相对常规地质钻孔,煤矿井下钻孔有其特殊性,对冲洗液的要求也更高。井下钻孔冲洗液产品应具有以下特性:良好的速溶性和分散性,优异的增黏性、润滑性及抑制性。在此基础上研选出井下钻孔冲洗液产品并与国外产品进行了对比,结果表明,所研选的产品与国外产品性能相当,可以满足煤矿井下钻孔冲洗液性能要求。
Gas drainage is an important technical measure for coal mine safety exploitation and gas prevention. Relative to conventional geological drilling, coal mine borehole has its own particularity, the requirements of the flushing fluid is also higher. Downhole drilling fluid products should have the following characteristics: good fastness and dispersion, excellent viscosity, lubricity and inhibition. On this basis, the product of downhole drilling fluid was researched and compared with that of foreign products. The results show that the performance of the products studied is comparable to that of foreign products, which can meet the performance requirements of borehole washing fluid in coal mines.