王向荣,王昌学,曹文莉
WANG Xiang-rong1,2,WANG Chang-Xue2

• 1:中国矿业大学资源与地球科学系
• 2:中国石油勘探开发研究院测井与遥感技术研究所
• 3:华北油田分公司勘探开发研究院

摘要(Abstract)：

应用测试资料计算压力-深度梯度线是MDT的主要功能之一。由于在压力-深度梯度线的计算方法上存在很多不确定性,经常导致计算结果存在较大偏差,使其应用受到限制。通过分析压力-深度梯度线斜率的计算误差,得出其准确度与各测点压力测量误差、测点个数、测点长度和各测点相对位置分布有关的结论。在测压点的选取中,还需要综合考虑测压点流体性质、测压点地层压力系数的变化以及各点地层连通情况等。压力-深度梯度线可以用于分析地层流体性质、确定油水界面、单井内评价储层纵向连通性或封隔层、划分压力系统、观察流体性质的纵向变化以及辅助进行多井油藏评价等。
MDT is widely used in the oil exploration and development whose one major function is to calculate pressure-depth gradient line from testing data.Its applications are limited because of the uncertainty in computation method which often results in a big deviation in calculation result.Conclusions were drawn from the analysis of the computation error of slop for the gradient line that the precision of slop for the pressure-depth gradient line is relative with the measurement errors,number,maximum distances and distribution positions of all pressure-measuring points,and the selection of measuring points must comprehensively consider its change of fluid,formation pressure coefficients and reservoir connectivity etc..The pressure-depth gradient line can be applied in the analysis of fluid kind,the determination of interface between oil and water,the evaluation of vertical connectivity for reservoir or hamper,the partition of pressure systems,the observation of the vertical change of formation fluid in single well,and assistant reservoir evaluation in multi-wells.

关键词(KeyWords)： MDT;压力-深度梯度线;计算;误差;应用
MDT;pressure-depth gradient line;computation;error;application

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 王向荣,王昌学,曹文莉
WANG Xiang-rong1,2,WANG Chang-Xue2

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