抑制性泥浆在新疆淖毛湖煤田东部勘查区中的应用
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摘要
新疆淖毛湖煤田东部勘查区,煤系地层多为灰色、淡黄色砾岩、砂岩,泥岩,泥岩与砂砾岩互层,泥岩夹煤层、煤线等,其中泥岩、泥岩与砂砾岩互层地层水敏性强,胶结性差,在钻进过程中易造成水化膨胀、缩径、坍塌等问题,护壁困难。针对该矿区的地层特征,采用抑制性无固相和低固相泥浆钻进,成功地维持了孔壁稳定,高效、安全地完成了钻孔,为今后施工类似钻孔取得了宝贵经验。
The coal-bearing strata are mostly gray and yellowish conglomerate,sandstone,mudstone,mudstone and glutenite interbedded,mudstone intercalated coal seam or coal line in the eastern exploration area of Naomaohu coalfield in Xinjiang,among which,strata of mudstone,mudstone and glutenite interbedded have strong water sensitivity,poor cementation and are easy to cause hydrated swell,shrinkage and wall collapse in the drilling process,wall protection is difficult.In view of the characteristics of the mine strata,the inhibitory solid free and low solid drilling fluid are used,the borehole stability is kept and effective and safe drilling is realized.
The coal-bearing strata are mostly gray and yellowish conglomerate,sandstone,mudstone,mudstone and glutenite interbedded,mudstone intercalated coal seam or coal line in the eastern exploration area of Naomaohu coalfield in Xinjiang,among which,strata of mudstone,mudstone and glutenite interbedded have strong water sensitivity,poor cementation and are easy to cause hydrated swell,shrinkage and wall collapse in the drilling process,wall protection is difficult.In view of the characteristics of the mine strata,the inhibitory solid free and low solid drilling fluid are used,the borehole stability is kept and effective and safe drilling is realized.
引文
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[2]乌效鸣,胡郁乐,贺冰新,等.泥浆与岩土工程浆液[M].湖北武汉:中国地质大学出版社,2002.
[3]福建省121煤田地质勘探队.绳索取芯钻进深孔施工技术[R].2008.
[4]罗冠平.LG植物胶无固相冲洗液在富煤二矿906号孔的应用[J].探矿工程(岩土钻掘工程),2011,38(2):19-22.
[5]贺冰新,乌效鸣,胡郁乐.超厚水敏性地层强抑制性泥浆的研究及应用[J].地质科技情报,1999,(S1):34-36.
[6]张晓静,乌效鸣,蔡记华,等.LG植物胶泥浆在煤田复杂地层钻探中的应用研究[J].探矿工程(岩土钻掘工程),2006,33(12):42-44,49.
[7]黄卫东.无固相泥浆在沉积岩复杂地层钻探中的应用研究[J].探矿工程(岩土钻掘工程),2011,38(12):10-12,17.
[8]蒋兵,刘勇,张志唐.PHP-CORESMART无固相冲洗液在风化煌斑岩地层中的应用[J].探矿工程(岩土钻掘工程),2014,41(7):42-44,61.
[9]单文军,蒋睿,陶士先,等.页岩气钻探冲洗液体系的研究与应用[J].探矿工程(岩土钻掘工程),2016,43(10):176-181.
[10]李攀义,单文军,储伟,等.双聚防塌冲洗液体系在GHW2井中的应用[J].探矿工程(岩土钻掘工程),2015,42(5):12-15.
[11]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.