The Latest Progress and Suggestions of Drilling and Completion Techniques in the Shengli Oilfield
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摘要: “十二五”期间，胜利油田为了实现复杂油气藏的高效开发和剩余油气的挖潜增效，深入开展了复杂结构井钻井、随钻测控仪器、新型破岩工具、膨胀管及钻井液完井液等技术研究与工具研制，初步形成了满足滩海浅海、低渗透、超稠油等难动用油气藏勘探开发需要的配套钻井完井技术。现场应用表明，大位移井、密集型丛式井技术的进步有力推动了滩海浅海油气藏的整体开发和降本增效，水力喷射径向水平井、近钻头地质导向及磁性导向钻井等技术丰富了复杂断块、超稠油等类型油气藏的精细开发手段，捷联式垂直钻井、扭转冲击钻井工具、高性能钻井液及实体膨胀管封堵等技术有效解决了复杂深井机械钻速慢且井下故障多的技术难题。在分析目前胜利油田钻井完井技术现状的基础上，分别从钻井装备自动化、高端随钻测控、信息化及绿色环保钻井等方面提出了“十三五”期间的发展建议，有利于进一步推动胜利油田钻井完井技术的快速发展，更好地满足复杂油气藏高效开发和剩余油气挖潜增效的需求。Abstract: To develop complex reservoirs more efficiently, and to accelerate the progress of drilling and completion techniques in the Shengli Oilfield during the 12th Five-Year Plan Period,development requirements and drilling difficulties encountered in some difficult-to-produce reservoirs were reviewed in detail. Such reservoirs include shallow marine beach deposits, low permeability and extra heavy oil reservoirs. During the course, research was performed related to the drilling of complex wells, the development of measuring-while-drilling instruments, innovative rock-breaking tools, expandable pipes, drilling fluids and other techniques and tools. Onsite application results showed technical progress in highly-deviated wells, high-density cluster wells and while other aspects effectively enhanced the overall development performances of shallow-marine hydrocarbon reservoirs. At the same time, relevant costs were reduced with development efficiencies enhanced dramatically. Hydraulic jet radial horizontal wells, near-bit geosteering drilling and magnetic guidance drilling technique enriched the fine development of complex reservoirs such as those with extra heavy oil and those in complex blocks. Automated strap-down vertical drilling, torsional impact drilling tools, high-performance drilling fluids and expandable tubular plugging techniques effectively removed the technical problems of slow ROPs and more complicated situations in deep wells. In consideration of existing drilling and completion techniques in the Shengli Oilfield, development proposals for the 13th Five-Year Plan Period were highlighted with regard to automatic operation of drilling facilities, top-end monitoring and control while-drilling, digitalization and environment-friendly drilling techniques. Application of these techniques might further promote fast development of drilling and completion technologies in the Shengli Oilfield, and to develop complex reservoirs more efficiently and to tap potential remaining recoverable oil/gas reserves.
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Keywords:
- complex reservoir /
- drilling /
- well completion /
- technical progress /
- development proposal /
- Shengli Oilfield
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