甘肃曹家口金矿松散破碎地层液动潜孔锤钻进冲洗液选型及应用
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摘要
曹家口金矿位于甘肃省山丹县大马营乡。2015年宁夏核工业地质勘查院2台全液压动力头钻机在该矿区施工,因地层破碎、坍塌、漏失严重等情况,曾报废4个钻孔。为了提高施工效率和施工质量,采用SYZX96型绳索取心液动潜孔锤,为确保液动潜孔锤能发挥最佳使用效果,对配套冲洗液类型进行了评价研究,并进行了现场应用。应用结果表明,回次进尺平均提高68%,全孔岩心采取率达到95.5%以上,台月效率平均提高21%,没有发生孔内事故,降低了钻探成本,提高了施工质量和施工效率。
Caojiakou gold deposit is located in Shandan County of Gansu Province.In the drilling construction in 2015,2 full hydraulic power head drilling rigs were used,4 drilling holes have been scrapped because of formation fracture,collapse and serious leakage.In order to improve the construction efficiency and quality,SYZX96 type wire-line coring hydraulic DTH hammer was adopted,and the evaluation analysis was carried out on the types of matching flushing fluid to ensure the best effect of the hydraulic DTH hammer.The field application results show that the footage per round trip increased by 68%,the core recovery rate was up to more than 95.5%in total and the average monthly efficiency increased by 21% with no downhole accident,which reduces the drilling cost and improves the construction quality and construction efficiency.
Caojiakou gold deposit is located in Shandan County of Gansu Province.In the drilling construction in 2015,2 full hydraulic power head drilling rigs were used,4 drilling holes have been scrapped because of formation fracture,collapse and serious leakage.In order to improve the construction efficiency and quality,SYZX96 type wire-line coring hydraulic DTH hammer was adopted,and the evaluation analysis was carried out on the types of matching flushing fluid to ensure the best effect of the hydraulic DTH hammer.The field application results show that the footage per round trip increased by 68%,the core recovery rate was up to more than 95.5%in total and the average monthly efficiency increased by 21% with no downhole accident,which reduces the drilling cost and improves the construction quality and construction efficiency.
引文
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[3]杨红东,武国峰.液动锤的试验与研究[J].探矿工程(岩土钻掘工程),2015,43(3),37-52.
[4]姜桂春,韩颂.绳索取心液动锤在浩尧尔忽洞金矿复杂地层中的应用[J].探矿工程(岩土钻掘工程),2015,40(10),13-15.
[5]苏长寿,谢文卫,杨泽英,等.系列高效液动锤的研究与应用[J].探矿工程(岩土钻掘工程),2010,37(3),17-31.
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[7]李攀义,单文军,徐兆刚,等.成膜防塌无固相钻井液体系在金鹰矿区ZK1146井中的应用研究[J].探矿工程(岩土钻掘工程),2015,42(10):26-30.
[8]陶士先,李晓东,吴召明,等.强成膜性护壁钻井液体系的研究与应用[J].地质与勘探,2014,50(9):1147-1154.
[9]胡继良,陶士先,纪卫军.破碎地层孔壁稳定技术的探讨与实践[J].探矿工程(岩土钻掘工程),2011,38(9):30-32.
[10]张晓静.水敏/松散地层钻井液的护壁机理分析与应用研究[D].湖北武汉:中国地质大学(武汉),2007.
[11]王建华,苏长寿,左新明.深孔液动潜孔锤钻进技术研究与应用[J].勘察科学技术,2011,(6):59-64.
[12]张所邦,谭建国,王爱军,等.宜昌磷矿北部整装勘查项目深孔复杂地层钻探技术[J].探矿工程(岩土钻掘工程),2017,44(4):23-27.