旋转导向系统在长庆油田致密油水平井的应用

Application of Rotary Steering System in Tight Oil Horizontal Well in Changqing Oilfield

致密油水平井的开发数量近年来不断增多、水平段长度不断增加,常规的LWD随钻测井系统已较难满足复杂沉积下、超长水平段的致密油水平井的施工,随着随钻测井技术的发展,旋转导向系统近几年的应用逐渐增大,并取得良好的应用效果。本文介绍了长庆油田主要使用的旋转导向系统的仪器结构、工作原理及性能参数等;阐述了基于旋转导向系统的轨迹与储层边界位置的关系识别、地层倾角现场拾取方法、地质导向方法及致密油水平井应用实例。

In recent years, the development number of tight oil horizontal wells and the length of horizontal section keep increasing, and the conventional LWD system is difficult to meet the requirements. With the development of LWD technology, the application of rotary steering system has been increasing and the effect is good. This paper introduces the structure, working principle and performance parameters of the rotary steering system used in Changqing oilfield, and describes the recognition of the relation between the track and the reservoir boundary position based on rotary steering system, the in-situ pickup method of dip angle, the geosteering method and the application example of tight oil horizontal wells.