黑山煤田绳索取心钻进用泥浆的配制与维护管理

长期以来,绳钻工艺因与煤系地层不太适应,国内的一些煤田勘探,仍以提钻取心钻探工艺为主,由于提钻取心的岩心采取率低,一定程度上影响了煤田钻探的施工质量。在国内金属矿区已普遍采用成功应用的绳索取心钻进工艺,能否应用到煤田勘探中,我们于2012年在黑山煤田进行了有益的尝试,经过施工7个钻孔的实践,取得了煤田绳钻施工中,在冲洗液配制的重要环节,如何选好、用好泥浆的初步经验。

Preparation and management of slurry for rope coring drilling in Heishan coalfield

For a long time,rope drilling technology is not suitable for coal measure strata.In some domestic coalfields,coring drilling technology is still the main method.Because the core recovery rate of coring is low,the construction quality of coalfield drilling is affected to a certain extent.Wire-line coring drilling technology has been widely used in domestic metal mining areas,but whether it can be applied to coal exploration or not,we made a beneficial attempt in Heishan coalfield in 2012.Through the practice of seven drilling holes,we obtained the preliminary experience in the construction of wire-line drilling in coalfield,and in the important link-preparation of flushing fluid how to select and use mud well.