特深套管开窗侧钻技术突破，助力超深层油气勘探
近日，我国油气勘探领域再传捷报——位于塔里木盆地塔东探区的奥探1C井顺利完成完钻作业。
该井套管开窗深度8162.3米，完钻井深9522米，垂深9406.16米，裸眼段长度1359.7米，最大井斜57.5度，质量指标合格率达100%，创造国内套管开窗最深纪录和直推存储式放射性测井技术最深井深、最高井温和最高压力纪录，再次刷新亚洲碳酸盐岩储层大斜度井垂深最深纪录，标志着中国石油在碳酸盐岩超深层勘探领域特高温、特高压、超深层钻探工程配套技术再上新台阶。
挑战超深层，技术破难题
塔东探区地质构造复杂，目标油气藏埋深普遍超过8000米，地层高温高压、岩性多变，传统钻井技术面临成本高、风险大的双重挑战。奥探1C井采用“套管开窗侧钻”技术，通过在已有深井套管内精准开窗，侧向钻出大斜度分支井眼，不仅避免了重新开钻新井的高昂成本，还大幅提升了储层钻遇率。这一技术突破，相当于在“万米地下绣花”，对轨迹控制、工具耐温和钻井液性能提出了极致要求。
战略意义深远，能源安全再添保障
塔东探区是我国超深层油气增储上产的重要接替区域。奥探1C井的顺利完钻，不仅验证了特复杂地层侧钻技术的可行性，更为同类超深井开发积累了宝贵经验。此项成果将加速塔里木盆地万亿方级油气资源的勘探进程，对保障国家能源安全、推动西部能源基地建设具有重要意义。
未来，随着配套技术的持续优化，特深套管侧钻有望成为深层油气开发的“标配”，为我国向地球深部要资源提供更高效、更经济的解决方案。
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