| 西藏鸭湖地区天然气水合物调查井钻探施工技术 |
| 投稿时间：2017-05-03 修订日期：2017-09-21 点此下载全文 |
| 引用本文：李宽,王舒婷,张永勤,等.西藏鸭湖地区天然气水合物调查井钻探施工技术[J].钻探工程,2017,44(10):26-30.LI Kuan,WANG Shu-ting,ZHANG Yong-qin,et al. Drilling Construction Technology of Natural Gas Hydrate Survey Well in Tibet Yahu Area[J]. Drilling Engineering, 2017,44(10):26-30. |
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| 基金项目:国家公益性地质调查项目“陆域冻土区天然气水合物钻采技术方法集成”（编号：DD-20160225）、“青南藏北冻土区天然气水合物资源勘查（勘探所）”（编号：GZH201400301）；国土资源部复杂条件钻采技术重点实验室开放课题“陆域天然气水合物松散覆盖层取心技术研究”（编号：DET201614） 〓〖HTH〗作者简介：〖HTSS〗李宽，男，汉族，1987年生，硕士，地质工程专业，主要从事天然气水合物钻采技术研究工作，河北省廊坊市广阳区金光道77号， likuan0611@163.com。 |
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| 中文摘要:西藏羌塘盆地是公认的天然气水合物有利找矿区，钻探取心是鉴别天然气水合物最直接、最准确的手段。为满足天然气水合物钻探需求，制定了大直径取心、低温泥浆护心的技术方案。试制了跟管取心钻具和大直径绳索取心钻具；逐步完善低温泥浆配方；研制出新型高效泥浆冷却装置。在鸭湖地区天然气水合物调查井施工中，克服地层复杂、环境恶劣等难题，完成钻探取样施工，终孔深度700.70 m，岩心采取率满足地质要求。查明了地层岩性、冻土厚度、气源、岩石物性特征等，不仅为天然气水合物资源评价也为其他油气资源调查提供了地质资料、技术支撑和人才储备。 |
| 中文关键词:天然气水合物 钻探取心 低温泥浆 跟管取心钻进 绳索取心钻进 泥浆冷却装置 |
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| Drilling Construction Technology of Natural Gas Hydrate Survey Well in Tibet Yahu Area |
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| Abstract:Qiangtang basin is recognized as advantageous prospecting area for natural gas hydrate and core drilling is the most direct and accurate method to identify natural gas hydrate. The technical methods of large diameter coring and core protection by low temperature mud were assigned to meet the requirements of natural gas hydrate drilling; trial production of simultaneous casing coring tool and large diameter wire-line coring tool were carried out; low temperature mud formula was gradually improved and new type efficient mud cooling device was developed. In the construction process of natural gas hydrate survey well in Yahu area, in spite of complex formations and bad environment, sample drilling construction was completed at final depth of 700.70m. The core samples can satisfy the geological requirements, the stratum lithology, thickness of frozen earth, gas source and physical properties of rock are found out, which provides geological data, technical support and talent reserve not only for the evaluation of natural gas hydrate resources but also for other oil and gas resources investigation. |
| keywords:natural gas hydrate core drilling low temperature mud simultaneous casing coring drilling wire-line coring drilling mud cooling device |
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