Abstract: In the non-conventional oil and gas area like heavy oil and oil sand, high-precision positioning and real-time navigation are required for drilling wells in relation to target well location and borehole trajectory in order to meet the special drilling requirements on such complicated wells. Therefore, to solve these technological bottlenecks, the efforts are focused on the distribution law of rotary magnetic field under the interfered environment and the study of the inter-well relative positioning and navigation methods, establishment of downhole artificial magnetic source for optimization of the design and calibration theoretical system of testing, and development of a set of methods for positioning algorithm and filtration of weak magnetic field signals. In addition, a series of products was independently and successfully developed, such as dual horizontal well magnetic piloting tool and relief well magnetic piloting tool. Experiment and industrialization of this series breaks the long-term monopoly of foreign technology. Based on the innovative mindset and work principle of those products, some follow-up products are also developed and used in a number of different fields, establishing presence in the domestic magnetic piloting sector on a long-term basis.

摘要： 稠油、油砂等非常规油气领域中, 正钻井相对目标井位置和井眼轨迹需实现高精度定位与实时导航, 以 达到该类复杂井型钻井的特殊要求。为此, 针对相关技术难题, 通过对干扰环境下旋转磁场分布规律、井间的相对定 位与导航方法的研究, 建立了井下人工磁源优化设计和测试标定理论体系, 研发了一套磁定位算法和微弱磁场信号滤 波方法, 自主研制成功双水平井磁导向工具以及救援井磁导向工具等为主体的系列化产品。该系列产品试验与产业化 推广多次, 打破了长期以来依靠国外技术的局面。秉承该产品创新思路和工作原理的后期开发产品可应用于多个不同 领域, 将长期在国内磁定向领域占有一席之地。

关键词: 磁导向, 非常规, 井眼轨迹控制, 双水平井, 定向井