捷联式旋转导向钻井系统的研制与现场试验

Development of the Strap-Down Rotary Steerable Drilling System and Field Test

作为尖端自动化钻井新技术的旋转导向钻井技术已经成为复杂超深钻井和大位移井的必备技术。为打破国外垄断,胜利石油钻井院开发了基于捷联式算法的稳定平台。利用伺服技术控制导向机构动作的执行,并对上传、下行通讯系统进行了优化改进,从而实现捷联式动态推靠旋转导向系统的自主研发;同时设计了一套工具井上测试平台,实现对其推靠性能的测试,验证设计的准确性,并在此基础上进行了4口井的现场实验。结果表明,该系统的最大造斜能力可达到6.43(°)/30 m,具备了良好的实用性、稳定性和可靠性。主要论述了捷联式旋转导向设计过程和思路,介绍了其主要结构和设计关键点,并对井上测试平台和井下实验进行了描述,对旋转导向系统技术进一步的优化改进有一定的指导作用。

As a new technology for cutting-edge automated drilling, Rotary steer drilling technology has become an indispensable technology for complex ultra-deep drilling and large-displacement wells. To break the foreign monopoly, Shengli drilling institute has developed a stable platform based on the Strapdown algorithm. The servo technology is used to control the action implement of the guidance mechanism, and the optimization and improvement of the uploading and downlink communication system are optimized and improved, so as to realize the independent research and development of the strap-down dynamic push-to-rotate guiding system. At the same time a set of tool well test platform is designed to test its pushing performance and verify the accuracy of the design. On this basis filed test have been done in four wells, and the results show that the system’s deflection ability can reach 6.43 °/30 m, with good practicability, stability and reliability. This paper mainly discusses the design process and ideas of strap-down rotary steering, introduces its main structure and design key points, and describes the uphole test platform and downhole experiments. The content of this paper summarizes the development of strap-down rotary guiding technology, and plays a positive guiding role for the further optimization and improvement of rotary guiding system technology.