KQT构造深层井段钻井提速技术研究

发布时间：2019-01-05 15:46

【摘要】：由于KQT区块3 500~4 500 m以下的地层压力系统与地质岩性趋于复杂,在深部钻井施工过程复杂情况频发,严重制约了钻井效率的提高,影响了获取地质资料的质量或者取全取准地质资料。此文以KQT区块已钻探井为基础,通过整理3 500 m以下的深部钻井技术资料,统计分析地层压力分布情况,了解复杂地层所在的层段、岩性及特性,设计适合深井探井的井身结构;在此基础上,分析现有钻井液体系的优缺点,并提出优化建议;对岩性的可钻性进行分析,整理总结现有钻头的使用情况,提出相应的改进意见;对KQT构造深部地层钻井中使用钻井提速工具进行归类统计,分析得出深层钻井中使用何种方法及提速工具对深层提速最为有效,最终形成该区块深层钻井提速技术方案,指导现场施工。
[Abstract]:Because the formation pressure system and geological lithology below 3 500 ~ 4 500 m in KQT block tend to be complex, the complex conditions occur frequently in the deep drilling process, which seriously restrict the improvement of drilling efficiency. It affects the quality of obtaining geological data or quasi-geological data. Based on the well drilled in KQT block, this paper analyzes the distribution of formation pressure statistically by sorting out the technical data of deep drilling below 3 500 m, and finds out the formation section, lithology and characteristics of the complex formation. Well structure suitable for deep well exploration; On this basis, the advantages and disadvantages of the existing drilling fluid system are analyzed, and the optimization suggestions are put forward, the drillability of the lithology is analyzed, the usage of the existing drill bit is summarized, and the corresponding improvement suggestions are put forward. According to the classification and statistics of drilling speed raising tools used in deep formation drilling of KQT structure, this paper analyzes the methods used in deep drilling and the most effective tools for raising speed in deep layer, and finally forms the technical scheme of raising speed in deep drilling in this block. Direct site construction.
【作者单位】：中国石油化工股份有限公司上海海洋油气分公司;
【分类号】：TE242

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