Abstract: With the development of the Bohai oilfield, the proportion of "low production, marginal and viscous" oilfield increases, and the implementation of infill adjustment wells becomes more difficult. Meanwhile, the complex reservoir is easy to lead to landing failure, low drilling rate and downhole accidents. Due to its own limitations, conventional edge detection logging technology can not meet the development and adjustment needs of complex oil and gas reservoirs. It is necessary to introduce the new detection while drilling technology to improve the depth, accuracy and efficiency of edge detection. Along the long⁃distance drilling technology, Schlumberger's high⁃definition multilateral exploration technology and ultra⁃deep multilateral exploration technology are combined in an innovative way. The detection distance is greatly increased to 76.2 meters, with higher resolution, more accurate landing guidance and more precise reservoir description. Through the actual data acquisition, analysis and comprehensive comparison of the adjustment wells C13H1 and P6H1 in the Bohai oilfield, the technology successfully guided the landing, and clearly explored the reservoir boundary more than 20 meters ahead, which greatly improved the reservoir drilling rate，development and production effect.

Key words: Adjustment well, Logging while drilling, Edge detection, Geosteering

摘要： 随着渤海油田开发程度的提高，“低、边、稠”油田占比增大，加密调整井实施难度加大，同时复杂的油藏易导致着陆不成功、储层钻遇率低和发生井下事故等。常规探边技术，由于自身局限性，无法满足复杂油气藏的开发调整需求，需要引进新的随钻探测技术提高探边深度、精度和效率。远距离随钻探边技术创新性地将斯伦贝谢的高清多边探测技术和超深多边探测技术合二为一，探测距离大幅度提升，可达76.2 m，分辨率更高，着陆导向更为精准，油藏描述更精细。该技术通过对渤海油田调整井C13H1井和P6H1井的实际资料录取、分析和综合对比，成功引导着陆，并提前约20 m清晰探到储层边界，大幅度提高了储层钻遇率和开发生产效果。

关键词: 调整井, 随钻测井, 探边, 地质导向