渤海秦皇岛27-3区块探井快速钻井关键技术  

Key technologies for rapid drilling of exploration well in QHD27-3 block in Bohai Sea

作　　者：刘宝生 徐鲲 李文龙 李庄威 杨保健 LIU Baosheng;XU Kun;LI Wenlong;LI Zhuangwei;YANG Baojian(CNOOC China Limited,Tianjin Branch,Tianjin 300459,China)

机构地区：[1]中海石油(中国)有限公司天津分公司,天津300459

出　　处：《中国海上油气》2024年第4期153-160,共8页China Offshore Oil and Gas

基　　金：“十三五”国家科技重大专项“大型油气田及煤层气”子课题“渤海油田高效开发示范工程(编号:2016ZX05058)”;中海石油(中国)有限公司科技项目“渤海油田3000万吨持续稳产关键技术研究”子课题“渤海边际油田高效开发钻完井配套技术(编号:CNOOC-KJ135ZDXM36 TJ06TJ)”部分研究成果。

摘　　要：渤海浅层油气发现仍是新增储量的重要组成部分。秦皇岛27-3浅部构造具有巨大的成藏潜力,但该构造在进行集中勘探钻井作业时,面临平台频繁迁装、定向探井资料录取难、大井眼提速压力大、浅部井壁易失稳、稠油测试难度大等技术难题。针对上述技术难题,在钻探模式优化、定向探井随钻取样技术、井身结构优化技术、井壁稳定技术、浅层稠油测试技术等方面开展研究攻关,形成了秦皇岛27-3区块勘探钻井关键技术,通过在本区域的勘探钻井中实现大规模应用,最终取得了较好地效果,大幅缩减了勘探钻井工期和费用,并助力了亿吨级储量发现。研究和现场应用结果表明,所形成的相关技术可为渤海油田浅层油气藏的快速钻探提供技术参考。The discovery of shallow oil and gas in the Bohai Sea is still an important part of the new reserves.The shallow structure of Qinhuangdao(QHD)27-3 has great potential for accumulation,but it faces technical problems such as frequent relocation of platforms,difficulty in obtaining data for directional exploration wells,high pressure for large borehole to speed up,easy instability of shallow borehole,and challenging heavy oil test during concentrated exploration and drilling operations.To this end,research has been carried out in the optimization of exploration and drilling mode,directional exploration well sampling while drilling technology,casing program optimization technology,borehole stabilization technology,shallow heavy oil testing technology,and other aspects,and the key technologies for exploration and drilling in QHD27-3 block have been developed.These technologies have achieved good results through large-scale application in exploration and drilling in this region,greatly reduced the cycle and cost of exploration and drilling,and facilitated the discovery of reserves at billion tons.The results of research and field application show that the developed key technologies can provide technical reference for rapid exploration and drilling of shallow oil and gas reservoirs in the Bohai Sea.

关 键 词：渤海油田 秦皇岛27-3 浅层 井身结构优化 井壁稳定 

分 类 号：TE242[石油与天然气工程—油气井工程]