煤田地质与勘探Issue(1)：87-89,3.DOI:10.3969/j.issn.1001-1986.2014.01.021
适用于破碎地层的新型单动双管钻具
The application test of the new double-barreled and single-acting coring tool in fractured formation
摘要
Abstract
Aiming at the problem of low coring recovery rate in extremely fractured formations, the paper designs a new double-barreled and single-acting coring tool, which comprises tool joint, single acting motion, inner pipe, outer pipe, core device and advance bore and lateral jet bit etc. Through the application test in Yangla mine, it can greatly improve the coring recovery rate in extremely fractured formations.关键词
破碎地层/单动双管钻具/取心率Key words
fractured formation/double-barreled and single-acting coring tool/coring recovery rate分类
天文与地球科学引用本文复制引用
杨昌杰,张绍和,苏宏岸,赵冲全,吴昊..适用于破碎地层的新型单动双管钻具[J].煤田地质与勘探,2014,(1):87-89,3.基金项目
湖南省自然科学基金项目(07JJ6089) （07JJ6089）
