摘要
绳索取心钻探技术是地质岩心取心勘探中较为先进的技术,应用领域不断扩大。河北煤田地质局第四地质队将该技术推广应用于煤层气参数井中,取得了很好的效果。针对勘探区的地层情况,选用了φ96mm尖齿金刚石孕镶钻头,采用了不分散低固相泥浆,并根据不同的岩层,选择不的钻进技术参数,从而顺利完成了煤层气参数井的施工工作。凸显出金刚石绳索取心钻进方法投入所具有的提高钻探效率、降低劳动强度、孔身直、岩煤心采取率高的优越性。
The wire-line coring drilling is a rather advanced technology in geological core coring drilling,and its application domain is expanded without intermission.The Fourth Exploration Team,Hebei Bureau of Coal Geological Exploration has popularized the technology into CBM parameter well and gotten good effect.In allusion to exploration area stratigraphic condition,the φ96mm sharp-toothed impregnated diamond bit and non-dispersed low-solid mud has been selected,and according to different strata,selected particular drilling technical parameters,and so fulfilled CBM parameter well construction smoothly.Thus the technology has protruded the advantages of diamond wire-line coring including higher drilling efficiency,lower work intensity,higher borehole perpendicularity,and higher rock and coal core recovery percentage.
出处
《中国煤炭地质》
2012年第6期68-69,共2页
Coal Geology of China
关键词
绳索取心钻进
煤层气参数井
钻探工艺
宣化东深部
wire-line coring drilling
CBM parameter well
drilling technology
eastern Xuanhua deep part
