路保平, 侯绪田, 柯珂. 中国石化极地冷海钻井技术研究进展与发展建议[J]. 石油钻探技术, 2021, 49(3): 1-10. DOI: 10.11911/syztjs.2021046
引用本文: 路保平, 侯绪田, 柯珂. 中国石化极地冷海钻井技术研究进展与发展建议[J]. 石油钻探技术, 2021, 49(3): 1-10. DOI: 10.11911/syztjs.2021046
LU Baoping, HOU Xutian, KE Ke. Achievements and Developing Suggestions of Sinopec’s Drilling Technologies in Arctic Sea[J]. Petroleum Drilling Techniques, 2021, 49(3): 1-10. DOI: 10.11911/syztjs.2021046
Citation: LU Baoping, HOU Xutian, KE Ke. Achievements and Developing Suggestions of Sinopec’s Drilling Technologies in Arctic Sea[J]. Petroleum Drilling Techniques, 2021, 49(3): 1-10. DOI: 10.11911/syztjs.2021046

中国石化极地冷海钻井技术研究进展与发展建议

Achievements and Developing Suggestions of Sinopec’s Drilling Technologies in Arctic Sea

  • 摘要: 北极油气资源丰富,但其低温、浅层灾害、冻土层、井筒处于大温变条件等地质、环境因素给钻井作业带来诸多挑战,为此,在“十三五”期间,中国石化以钻井安全环保高效为总目标,以解决钻井装备及工具、钻井工艺及措施、井筒工作流体的“冷”适应性问题为核心,进行了钻井灾害风险评价控制与环保、钻井关键装备及工具、钻井工艺与井筒工作液等关键技术研究,在浅层气、天然气水合物灾害地层的定量风险评价方法、–50 ℃低温轨道钻机及钻井工具、冻土层井壁稳定性评价与控制技术、低温钻井液与固井水泥浆等工程技术方面取得了重要进展,初步形成了极地冷海钻井关键技术体系。随着北极油气开发,陆地上将进入更高纬度、更厚永冻层区域,海洋上将向更深水域、常年冰或更厚浮冰海域进军,极地冷海钻井将面临更大的挑战,需要进一步完善极地冷海钻井完井技术理论与方法,研制新型钻井完井关键装备与工具,形成较为完善的极地冷海钻井完井技术体系,以满足北极地区油气藏高效勘探开发的需求,提升我国石油公司在极地油气合作项目中的经济效益和核心竞争力。

     

    Abstract: The Arctic area is rich in oil and gas resources. However, its geological and environmental factors such as low temperature, shallow hazards, permafrost and extreme temperature change in wellbore bring many challenges to drilling operation. For this reason, during the "Thirteenth Five-Year Plan" period, Sinopec took safety, environmental protection and efficient drilling as its overall goals and focused on solving the problem of "cold" adaptability of drilling equipments and tools, drilling technologies and measures, wellbore working fluids. Research was performed on key technologies regarding drilling hazard assessment and control, environmental protection, key drilling equipments and tools, drilling techniques, wellbore working fluids, etc. Impressive progresses were made in the quantitative risk assessment method for hazards to shallow gas and gas hydrate formations, the orbital drilling rigs and tools utilized at −50 °C, stability evaluation and borehole stability control in permafrost, and engineering technologies related to drilling fluid and cement slurry under low temperature conditions. As a result, the key technology system of drilling in the Arctic sea was preliminarily developed. As the Arctic oil and gas development enters higher latitudes and thicker permafrost regions on land, and the oceans will advance to deeper waters, perennial ice or thicker ice floes, drilling in Arctic sea will face greater challenges and requires further progress. Therefore, it is necessary to build a complete drilling and completion technology system in the Arctic sea by improving the theories and methods and developing new key equipments and tools. With the system, the demands of efficient exploration and development of oil and gas reservoirs in the Arctic region can be realized, thereby enhancing the economic benefits and core competitiveness of China’s oil companies in international cooperation projects of oil and gas development in this area.

     

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