绳索取心钻进工艺在盐矿深部钻探中的应用研究
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摘要
宁夏固原硝口-寺口子盐矿地层复杂,上部古近系清水营组存在厚约150 m的红色泥岩夹石膏层,水敏性强,孔壁稳定性差,易出现坍塌和缩径,造成卡钻和抱钻事故;下部白垩系乃家河组含芒硝矿层及岩盐矿层,揭露厚度达380多米,水溶性强,孔壁易溶蚀形成"大肚子"、护壁难、钻进效率低、取心质量差。针对以上施工难题,从钻孔结构、钻头选型、钻井液和钻进参数等方面着手研究,建立了一套适合盐矿施工的绳索取心钻进工艺技术,有效地维护了孔壁稳定,实现了高效、高质、安全钻进,为今后施工类似钻孔积累了经验。
The formations are complicated in Xiaokou-Sikouzi salt mine of Ningxia,there is a red mudstone gypsum strata about 150 min thickness in the upper Qingshuiying Formation of the Paleogene with strong water sensitivity and poor hole wall stability,which is prone to cause collapse and hole shrinkage and results in the accidents of drill sticking and burying;the lower Najiahe Formation of Cretaceous contains mirabilite and rock salt deposits,the exposing thickness is more than 380 meters with strong water-solubility and the hole walls are easily corroded to form"big belly"with difficult wall protection and low drilling efficiency and poor coring quality.In view of the above construction problems,the research is carried out on the drilling structure,bit selection,drilling fluid and drilling parameters,on this basis,a set of wire-line core drilling technology suitable for salt mine construction is established,which is effective to maintain the hole wall stability and realize high efficiency,high quality and safe drilling.
The formations are complicated in Xiaokou-Sikouzi salt mine of Ningxia,there is a red mudstone gypsum strata about 150 min thickness in the upper Qingshuiying Formation of the Paleogene with strong water sensitivity and poor hole wall stability,which is prone to cause collapse and hole shrinkage and results in the accidents of drill sticking and burying;the lower Najiahe Formation of Cretaceous contains mirabilite and rock salt deposits,the exposing thickness is more than 380 meters with strong water-solubility and the hole walls are easily corroded to form"big belly"with difficult wall protection and low drilling efficiency and poor coring quality.In view of the above construction problems,the research is carried out on the drilling structure,bit selection,drilling fluid and drilling parameters,on this basis,a set of wire-line core drilling technology suitable for salt mine construction is established,which is effective to maintain the hole wall stability and realize high efficiency,high quality and safe drilling.
引文
[1]靳红兵.深部岩盐取心钻探技术[J].探矿工程(岩土钻掘工程),2011,38(10):10-12.
[2]景龙,徐树,常林祯,等.沧州深部盐矿钻探施工关键技术探讨[J].探矿工程(岩土钻掘工程),2013,40(5):8-12.
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[4]张秋冬,邢向渠,魏庆,等.东濮凹陷盐矿普查区ZK0403钻孔钻探工艺[J].探矿工程(岩土钻掘工程),2012,39(S2):238-241.
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[6]李金锁,张少林,刘江,等.绳索取心钻进技术在松散盐岩地层中的应用探讨[J].探矿工程(岩土钻掘工程),2015,42(7):5-9.
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[9]黄卫东,付帆,胡继良,等.多功能复合剂在伊塘湖矿区ZK11-1孔的应用[J].探矿工程(岩土钻掘工程),2012,39(5):1-3.
[10]刘翠娜,纪卫军,李晓玮,等.盐水钻井液配制方法对其性能的影响[J].探矿工程(岩土钻掘工程),2012,39(1):33-36.
[11]黄卫东,付帆,陶士先.多功能抗污染剂在老挝农波矿区南部钾盐钻探中的应用[J].探矿工程(岩土钻掘工程),2014,41(3):21-24.
[12]张颖.宁夏固原芒硝矿取心钻探钻井液技术研究[D].北京:中国地质大学,2006.
[13]褚小东.宁夏固原硝口地区岩盐矿地质特征和成因分析[D].北京:中国地质大学,2013.
[2]景龙,徐树,常林祯,等.沧州深部盐矿钻探施工关键技术探讨[J].探矿工程(岩土钻掘工程),2013,40(5):8-12.
[3]仲玉芳,赵岩.宁晋—辛集勘探区2-1盐井的施工[J].探矿工程(岩土钻掘工程),2014,41(7):24-27.
[4]张秋冬,邢向渠,魏庆,等.东濮凹陷盐矿普查区ZK0403钻孔钻探工艺[J].探矿工程(岩土钻掘工程),2012,39(S2):238-241.
[5]程建祥,张德权,张家峰.漳县盐矿钻探施工与成井工艺[J].探矿工程(岩土钻掘工程),2005,32(6):54-56.
[6]李金锁,张少林,刘江,等.绳索取心钻进技术在松散盐岩地层中的应用探讨[J].探矿工程(岩土钻掘工程),2015,42(7):5-9.
[7]张成城,黄纪冯,梁英津.江苏盐田深井绳索取心钻探技术[J].探矿工程,1996,(5):28-30.
[8]陈金照.宁夏固原硝口岩盐矿钻探施工技术[J].中国煤炭地质,2016,28(4):67-70.
[9]黄卫东,付帆,胡继良,等.多功能复合剂在伊塘湖矿区ZK11-1孔的应用[J].探矿工程(岩土钻掘工程),2012,39(5):1-3.
[10]刘翠娜,纪卫军,李晓玮,等.盐水钻井液配制方法对其性能的影响[J].探矿工程(岩土钻掘工程),2012,39(1):33-36.
[11]黄卫东,付帆,陶士先.多功能抗污染剂在老挝农波矿区南部钾盐钻探中的应用[J].探矿工程(岩土钻掘工程),2014,41(3):21-24.
[12]张颖.宁夏固原芒硝矿取心钻探钻井液技术研究[D].北京:中国地质大学,2006.
[13]褚小东.宁夏固原硝口地区岩盐矿地质特征和成因分析[D].北京:中国地质大学,2013.