SA75+5绳索取心钻具在第三系煤田地质勘探中的应用

Application of SA75+5 Wire-line Coring Tool in Tertiary Coalfield Geological Exploration

摘要:

针对宝山-振兴煤田第三系煤田地质勘探中地层松散，易坍塌、掉块、缩径的问题，采用普通双管和普通绳索取心钻进，各有利弊，而将SA75绳索取心钻具钻头、扩孔器加大到Φ80 mm，并采取相应的钻孔、取心技术措施，取得了质量高、效率高、效益好的成果。

Abstract:

According to the loose stratum, easy collapsing, block-falling and hole diameter shrinkage in the tertiary coalfield exploration for Baoshan-Zhenxin coalfield, application of general double-tube and wireline coring drilling have their own advantages and disadvantages. But by enlarging SA75 wire-line coring drilling tool and hole reamer to 80mm in diameter with corresponding measures of drilling and coring, high quality, high efficiency and preferable benefit were achieved.