X射线荧光元素录井在南堡油田潜山卡层中的应用研究

随着PDC钻头、大位移井和欠平衡井等钻井工艺的广泛应用，随钻录井中的岩屑变得细小、混杂，难以识别，给卡准潜山界面带来很大困难。针对这一现状，以X射线荧光元素录井技术为基础，对南堡油田岩石元素特征进行了分析研究，结合实钻岩屑元素资料，制作了岩性解释图板，划分了两种钻遇潜山类型，揭示了风化壳残积层元素发育规律，介绍了元素曲线随钻应用实例，总结出一套适用于南堡油田的潜山卡层新方法。现场试用表明，该方法是可行的，是常规潜山卡层方法的补充，为安全、快速钻井提供了重要技术支撑。

The applied research of X-ray fluorescence logging for sticking the layer in buried hills of Nanpu Oilfield

With the wide use of drilling technologies such as PDC bits,large displacement wells and underbalanced wells,while drilling,mud logging cuttings are becoming smaller and more complex,which is difficult to identify and has brought great difficulties for accurately sticking the interface of buried hills.In response to such a situation,based on the elemental analysis data of X-ray fluorescence logging technology,the rock elemental characteristics in Nanpu Oilfield were analyzed.Combined with the real elemental data of practical drilling cuttings,the interpretation chart for cutting property has been produced and two types of buried hills drilled were classified.The author revealed the development law for elements of weathering crust eluvial layers,introduced the while-drilling application examples of the element curve and summarized a set of new method of sticking the layer in buried hills for Nanpu Oilfield.The actual use showed that the method is feasible and is the supplement for the conventional methods of sticking the layer in buried hills,which can provide an important technical support for safety and fast drilling.