GYx地热井钻井液技术
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摘要
高阳地热田GYx地热井,钻遇新近系及古近系地层较齐全,完钻井深3920m,是一口三开井,目的层为蓟县系雾迷山组,施工中存在卡钻、漏失、掉块、坍塌及油气的风险。二开施工是钻井液的重点和难点,钻井液采用以大分子包被剂为主的聚合物泥浆及抗高温硅基防塌泥浆,使用耐高温的钻井液材料,按照地层压力控制钻井液密度,使用页岩抑制剂抑制页岩的水化膨胀,严格控制钻井液的失水量,使用润滑剂提高泥浆润滑性;采用四级钻井液固控设备并合理使用;所用钻井液性能良好,解决了施工中存在的风险问题,同时取得了较高的机械钻速。
Geothermal Well GYx in Gaoyang Geothermal Field was a three-section well with a completion depth of 3920 m.Neogene and Paleogene formation was drilled in this well,and the target layer was Wumishan Group of Jixian System.Drilling operations in the formation was difficult due to many problems such as sticking,leakage,chipping,collapsing,and even occurrence of oil and gas layers.Preparation of proper drilling fluids were very critical and difficult,especially for the second section drilling.Polymer mud with the macromolecule coating agent and silica-based anti-collapsed mud with high temperature resistance were adopted for the drilling fluid,and the high temperature-resistant drilling material was used.The density of the drilling fluid was controlled according to the formation pressure.The shale inhibitor was used to prevent shale hydration and swelling,and to control the water loss of the drilling fluid as well.The mud lubricity was improved by adding some lubricating agent.The four stage solid control equipment was used to clean the drilling fluid.By taking these measures,the drilling fluid adopted in Well GYx provided good performance,which had eliminated the drilling risks;meanwhile the penetration rate was greatly improved.
Geothermal Well GYx in Gaoyang Geothermal Field was a three-section well with a completion depth of 3920 m.Neogene and Paleogene formation was drilled in this well,and the target layer was Wumishan Group of Jixian System.Drilling operations in the formation was difficult due to many problems such as sticking,leakage,chipping,collapsing,and even occurrence of oil and gas layers.Preparation of proper drilling fluids were very critical and difficult,especially for the second section drilling.Polymer mud with the macromolecule coating agent and silica-based anti-collapsed mud with high temperature resistance were adopted for the drilling fluid,and the high temperature-resistant drilling material was used.The density of the drilling fluid was controlled according to the formation pressure.The shale inhibitor was used to prevent shale hydration and swelling,and to control the water loss of the drilling fluid as well.The mud lubricity was improved by adding some lubricating agent.The four stage solid control equipment was used to clean the drilling fluid.By taking these measures,the drilling fluid adopted in Well GYx provided good performance,which had eliminated the drilling risks;meanwhile the penetration rate was greatly improved.
引文
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[2]单文军,陶士先,蒋睿,等.干热岩用耐高温钻井液关键技术及进展[J].探矿工程(岩土钻掘工程),2018,45(10):52-56.SHAN Wenjun,TAO Shixian,JIANG Rui,et al.Key technology and progress in high temperature resistant drilling fluid for hot dry rock[J].Exploration Engineering(Rock&Soil Drilling and Tunneling),2018,45(10):52-56.
[3]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.SHAN Wenjun,JIANG Rui,TAO Shixian,et al.Research and application of the flushing fluid system for shale gas drilling[J].Exploration Engineering(Rock&Soil Drilling and Tunneling),2016,43(10):176-181.
[4]付宇,裴小龙,南天浩,等.北京风河营热水储层的钻井液体系优化研究[J].探矿工程(岩土钻掘工程),2018,45(1):14-18,23.FU Yu,PEI Xiaolong,NAN Tianhao,et al.Optimization research of drilling fluid system of the hydrothermal reservoir in Fengheying[J].Exploration Engineering(Rock&Soil Drilling and Tunneling),2018,45(1):14-18,23.
[5]王虎,朱斗圣,张承飞,等.贵州省遵义县ZK1地热井钻井液技术[J].探矿工程(岩土钻掘工程),2016,43(10):245-249.WANG Hu,ZHU Dousheng,ZHANG Chengfei,et al.Drilling fluid technology for ZK1geothermal well in Zunyi of Guizhou[J].Exploration Engineering(Rock&Soil Drilling and Tunneling),2016,43(10):245-249.
[6]黄聿铭,张金昌,杨钦明.钾铵聚合物钻井液在地热钻井中的应用研究[J].探矿工程(岩土钻掘工程),2016,43(10):265-268.HUANG Yuming,ZHANG Jinchang,YANG Qinming.Research and application of potassium-ammonium polymer drilling fluid suitable for geothermal well[J].Exploration Engineering(Rock&Soil Drilling and Tunneling),2016,43(10):265-268.
[7]王虎,陈怡,段德培,等.低渗透成膜钻井液在贵州深部地热井中的应用[J].探矿工程(岩土钻掘工程),2015,42(4):13-15,20.WANG Hu,CHEN Yi,DUAN De-pei,et al.Application of low permeability film forming drilling fluid in deep geothermal well in Guizhou Province[J].Exploration Engineering(Rock&Soil Drilling and Tunneling),2015,42(4):13-15,20.
[8]李进安.内蒙古哈素海地热井施工技术[J].探矿工程(岩土钻掘工程),2018,45(5):55-57.LI Jinan.Construction technology of Hasuhai geothermal well in Inner Mongolia[J].Exploration Engineering(Rock&Soil Drilling and Tunneling),2018,45(5):55-57.
[9]罗文行,孙国强,房艳国,等.景洪市嘎栋地热井特征及成井工艺总结分析[J].探矿工程(岩土钻掘工程),2016,43(10):257-260.LUO Wenxing,SUN Guoqiang,ANG Yanguo,et al.The features of geothermal well in Gadong of Jinghong City and the well completion technology[J].Exploration Engineering(Rock&Soil Drilling and Tunneling),2016,43(10):257-260.
[10]景龙,王彦静,李伟,等.承德闫营子地热勘探井钻井技术分析[J].探矿工程(岩土钻掘工程),2015,42(10):21-25.JING Long,WANG Yanjing,LI Wei,et al.Analysis on drilling technology used for Yanyingzi geothermal exploration well in Chengde[J].Exploration Engineering(Rock&Soil Drilling and Tunneling),2015,42(10):21-25.
[11]李勇,陈怡,王虎,等.磺化沥青钻井液在贵州地热勘探井中的应用[J].探矿工程(岩土钻掘工程),2015,42(1):27-30.LI Yong,CHEN Yi,WANG Hu,et al.Application of Sulfonated Asphalt Drilling Fluid in Geothermal Exploration Well of Guizhou[J].Exploration Engineering(Rock&Soil Drilling and Tunneling),2015,42(1):27-30.
[12]于孝民,杨春光,董国明,等.唐山市第一眼蓟县系地热井钻探及成井技术[J].探矿工程(岩土钻掘工程),2014,41(2):41-44.YU Xiaomin,YANG Chunguang,DONG Guoming,et al.Drilling and completion technology in the first geothermal well construction in Jixian system in Tangshan[J].Exploration Engineering(Rock&Soil Drilling and Tunneling),2014,41(2):41-44.
[13]贾铎.钻井液工程师技术手册[M].北京:石油工业出版社,2015.JIA Duo.Drilling fluid engineer technology manual[M].Beijing:Petroleum Industry Press,2015.
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