水平井测井资料地质解释应用

Application of Geologic Interpretation of Horizontal Well Logging Data

水平井测井资料隐含着丰富的地质信息,如何揭示它是一项新的工作。水平井眼轨迹常常会在地层层界面上下波动,由此引起的测井响应特征差异能充分反映空间上地层构造和岩性的变化。通过研究地层关键界面点的解释方法和测井曲线特征与井眼轨迹到地层界面距离的关系,提出了描述井眼轨迹范围内地层层界面空间展布的多项式趋势面法。提出的方法应用到塔里木油田水平井测井地质解释中效果较好,能推广应用到水平井开采的油田中。

Abundant geologic information is contained in horizongtal well logging data, how to reveal it is a new job. The horizontal well trajectory generally fluctuates on a formation interface, thus a difference is caused in logging response property, by which the variations of formation structure and lithology can be reflected spatially. Through studying the method for interpretating the key formation interface point and the relations between logging curve property and from trajectory to interface distance, a polynomial trend surface method for describing the spatial distribution of formation interface within the well trajectory is proposed. The method is effective for geologic interprelation of horizontal well logging in Tarim Oilfield with better result, it can be introduced in oilfields.