科威特北部油田钻完井工程技术进展

Technical Progress of Drilling and Completion Engineering in Northern Kuwait Oil Field

摘要: Raudhatain和Sabiriyah油田属于科威特北部深层砂岩油田，主要产油层为三角洲Burgan组砂岩、Zubair以及Mauddud地层的浅海碳酸盐岩，相比于科威特南部，钻完井及排采系列工程技术面临钻井周期偏长、井筒流动规律复杂等挑战。针对复杂的地质挑战，不断深化地质认识，深度融合油藏地质与工程技术，围绕快速建产，持续攻关钻采工程工艺，历经三轮探索优化，钻井技术强化，减少井下复杂风险，缩短钻井周期，运用排井钻机施工减少搬迁时间；排采工艺基于不同层位完井方案，形成排井模块式工艺决策方法，最终形成了以“精细轨迹控制优快钻进”、“水平井各向异性中靶目的层”、“注水加快有效排采”为核心的工程技术序列，为科威特深层油气工程技术发展积累了宝贵经验，也为下一步优化开发方案提供了探索方向。

Abstract: The Raudhatain and Sabiriyah fields are deep sandstone fields in Northern Kuwait, mainly producing shallow Marine carbonate rocks in the Delta Burgan Formation, Zubair and Mauddud formations. The engineering technologies of drilling, completion and production are faced with such challenges as long drilling cycle and complex wellbore fluid flow. In response to complex geological challenges, we continue to deepen geological understanding, deeply integrate reservoir geology and engineering technology, focus on rapid production construction, continue to tackle drilling and production engineering technology, after three rounds of exploration and optimization, strengthen drilling technology, reduce complex downhole risks, shorten drilling cycle, and reduce relocation time by using Pad-well drilling rig construction; the Pad-well and production process is based on the completion plan of different formations, forming a modular process decision method of Pad-well, and finally forming an engineering technology sequence with the integration of “precisely trajectory control optimal fast drilling”, “horizontal well anisotropic target zone”, and “water injection accelerated and effective Pad-well and production”, which has accumulated valuable experience for the development of deep oil and gas engineering technology in Kuwait. It also provides the exploration direction for the next step to optimize the development scheme.