罗布泊盐湖深部钾盐地质科学钻探LDK02孔冲洗液工艺
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摘要
罗布泊盐湖深部钾盐地质科学钻探LDK02孔钻遇地层主要为第四系松散层,其中,卵砾石层及砂层孔段易发生坍塌埋钻事故,粘土层孔段易缩径卡钻,导致钻探施工中孔壁极不稳定、极易引发孔内事故;现场使用卤水配制冲洗液,对冲洗液处理剂性能影响较大,导致配制的冲洗液胶体稳定性差、易沉淀分层、不能有效悬浮和携带岩粉。针对上述问题,对现场卤水进行了离子成分分析,选用抗盐性能好的处理剂配制卤水冲洗液,在LDK02孔现场应用,取得了良好效果,保证了钻探施工的顺利实施。
The formation encountered in drilling the potassium geological scientific drilling borehole LDK02 in deep Lop Nur Salt Lake was mainly the Quaternary loose overburden, where bit burial was prone to happen due to borehole collapse in gravel, and bit sticking due to borehole contraction in clay, resulting in the hole wall extremely unstable and accidents easy to occur during drilling. Brine used to prepare the drilling fluid on-site had a significant influence on the performance of the additives of the drilling fluid, resulting in many problems of the drilling fluid, such as poor colloidal stability, easy sedimentation and delamination, ineffectively carrying and removing cuttings. To deal with the above problems, the ionic composition analysis was carried out on the on-site brine, and the additives with good salt resistance was selected to make brine based drilling fluid, which was applied in drilling the borehole LDK02 with good results, ensuring the smooth implementation of the drilling work.
The formation encountered in drilling the potassium geological scientific drilling borehole LDK02 in deep Lop Nur Salt Lake was mainly the Quaternary loose overburden, where bit burial was prone to happen due to borehole collapse in gravel, and bit sticking due to borehole contraction in clay, resulting in the hole wall extremely unstable and accidents easy to occur during drilling. Brine used to prepare the drilling fluid on-site had a significant influence on the performance of the additives of the drilling fluid, resulting in many problems of the drilling fluid, such as poor colloidal stability, easy sedimentation and delamination, ineffectively carrying and removing cuttings. To deal with the above problems, the ionic composition analysis was carried out on the on-site brine, and the additives with good salt resistance was selected to make brine based drilling fluid, which was applied in drilling the borehole LDK02 with good results, ensuring the smooth implementation of the drilling work.
引文
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[2] 宣之强,焦鹏程,王弭力,等.罗布泊罗北凹地科钾1井盐类矿物组合及找钾研究[J].盐湖研究,2013(4):16-20.XUAN Zhiqiang,JIAO Pengcheng,WANG Mili,et al.Salt mineral assemblage and potassium prospecting of Well Kejia-1 in Luobei depression,Lop Nur Area[J].Journal of Salt Lake Research,2013(4):16-20.
[3] 吕凤琳,刘成林,焦鹏程,等.亚洲大陆内部盐湖沉积特征、阶段性演化及其控制因素探讨——基于罗布泊LDK01深孔岩心记录[J].岩石学报,2015,31(9):2770-2782.Lü Fenglin,LIU Chenglin,JIAO Pengcheng,et al.The discussion on sedimentary characteristics,phased evolution and controlling factors of saline lake in Asia Interior:Records from deep drill cores of LDK01 in Lop Nur,Xinjiang,Northwestern China[J].Acta Petrologica Sinica,2015,31(9):2770-2782.
[4] 焦鹏程,刘成林,颜辉,等.新疆罗布泊盐湖深部钾盐找矿新进展[J].地质学报,2014,88(6):1011-1024.JIAO Pengcheng,LIU Chenglin,YAN Hui,et al.New progress of potassium prospecting in deep salt lake of Lop Nur region in Xinjiang[J].Acta Geologica Sinica,2014,88(6):1011-1024.
[5] 余冬梅,虎啸天,付江涛,等.岩盐物理力学性质及其工程稳定性应用现状及其展望[J].盐湖研究,2013(3):65-72.YU Dongmei,HU Xiaotian,FU Jiangtao,et al.Physical and mechanical propertise of rock salt and Its application in promoting engineering stability[J].Journal of Salt Lake Research,2013(3):65-72.
[6] 李浩,唐中凡,刘传福,等.新疆罗布泊盐湖卤水资源综合开发研究[J].地球学报,2008,29(4):517-524.LI Hao,TANG Zhongfan,LIU Chuanfu,et al.Comprehansive exploitation and research of brine resources in the Lop Nur Salt Lake,Xinjiang[J].Acta Geoscientica Sinica,2008,29(4):517-524.
[7] 胡继良,陶士先.深部地质钻探钻井液体系设计因素及其分析[J].探矿工程(岩土钻掘工程),2011,38(4):17-21.HU Jiliang,TAO Shixian.Design factors of drilling fluid system for deep geological drilling and the analysis[J].Exploration Engineering (Rock & Soil Drilling and Tunneling),2011,38(4):17-21.
[8] 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):30-32,64.HU Jiliang,TAO Shixian,JI Weijun.Discussion of borehole wall stability technology in broken formation and the practice[J].Exploration Engineering (Rock & Soil Drilling and Tunneling),2011,38(9):30-32,64.
[9] 孙丙伦,陈师逊,陶士先.复杂地层深孔钻探泥浆护壁技术探讨与实践[J].探矿工程(岩土钻掘工程),2008,35(5):13-15,24.SUN Binglun,CHEN Shixun,TAO Shixian.Discussion and practice on wall protection with slurry in deep-hole drilling in complicated formation[J].Exploration Engineering (Rock & Soil Drilling and Tunneling),2008,35(5):13-15,24.
[10] 贾宏福,罗刚,付兆友,等.MBM-GTQ盐水冲洗液体系的研究与应用[J].探矿工程(岩土钻掘工程),2015,42(12):23-27.JIA Hongfu,LUO Gang,FU Zhaoyou,et al.Study on MBM-GTQ saltwater drilling fluid system and the application[J].Exploration Engineering (Rock & Soil Drilling and Tunneling),2015,42(12):23-27.
[11] 宫述林,赵光贞,栾元滇,等.钾盐矿床钻探工艺技术[J].探矿工程(岩土钻掘工程),2011,38(7):25-28.GONG Shulin,ZHAO Guangzhen,LUAN Yuandian,et al.Drilling technology in potassium deposit[J].Exploration Engineering (Rock & Soil Drilling and Tunneling),2011,38(7):25-28.
[12] 王正浩,申立,宋仲科.卤水钻井液在青海钾盐矿层钻探中的应用研究[J].中国煤炭地质,2015(9):55-58.WANG Zhenghao,SHEN Li,SONG Zhongke.Applied research of salt brine drilling fluid in Qinghai sylvinite strata drilling[J].Coal Geology of China,2015(9):55-58.
[13] 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.HUANG Weidong,FU Fan,HU Jiliang,et al.Application of multifunctional complex additive in ZK11-1 Hole of Yitanghu Mine[J].Exploration Engineering (Rock & Soil Drilling and Tunneling),201239(5):1-3.
[14] 纪卫军,张明德,赵长亮,等.青海省冷湖镇钾矿资源调查评价项目冲洗液技术研究及应用[J].探矿工程(岩土钻掘工程),2016,43(1):54-57.JI Weijun,ZHANG Mingde,ZHAO Changliang,et al.Research and application of flushing fluid technology for potassium ore resource investigation project of Lenghu Town in Qinghai[J].Exploration Engineering (Rock & Soil Drilling and Tunneling),2016,43(1):54-57.
[15] 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.HUANG Weidong,FU Fan,TAO Shixian.Application of multifunctional antipollution agent for potash drilling in Laos[J].Exploration Engineering (Rock & Soil Drilling and Tunneling),2014,41(3):21-24.
[16] 王正浩,申立.青海深层卤水钾盐钻探施工技术[J].中国井矿盐,2015(3):23-27.WANG Zhenghao,SHEN Li.Struction technology of brine potash deep drilling in Qinghai[J].China Well and Rock Salt,2015(3):23-27.
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