摘要
袁宁，聂小春，聂在平．自然电位测井的定量分析与应用研究．测井技术，１９９９，２３（１）：９～１４利用高效的数值模式匹配理论（ＮＭＭ）对自然电位测井响应进行了严格的数值模拟。首先根据自然电位的成因建立了任意轴对称二维非均匀介质结构下自然电位测井的分析模型，然后利用数值模式匹配理论求解出δ环电极的位场格林函数，再根据偶极层激励条件和场的迭加原理求出任意点的自然电位测井响应。利用以上方法定量分析了诸如地层水和泥浆滤液含盐浓度、地层厚度、井径、侵入带等因素对自然电位测井响应的影响，研究了测井界广为关注的水淹油层问题，并制作出了可直接由响应反演地层水电阻率的ＳＰ－Ｒｍｆ／Ｒｗ解释图版。
The spontaneous potential log is efficiently analyzed with
the numerical mode matching theory, a semi analytical and semi numerical method.
First, the analytical model of the SP log in 2D arbitrargily axisymmetrical non
homogeneous media is set up on the basis of SP origin. Then the Green′s function of
the potential field of δ loop electrode is obtained from the numerical mode matching
theory. Considering the dipole layers on interfaces as excitation sources, the SP
response of arbitrary field points can be computed according to the superposition
principle. The effects of various factors on SP response, which include concentration of
the connate water and mud filtration, bed thickness, borehole diameter, invasion and so
on, are investigated quantitatively by the above method. Water flooded reservoir which
is of extensive research interest is also studied. Furthermore, the method and program
in this paper can be used to make SP R mf / R w interpretation charts, with
which the resistivity of the formation water can be determined directly from the SP
respouse.
出处
《测井技术》
CAS
CSCD
北大核心
1999年第1期9-14,共6页
Well Logging Technology
关键词
自然电位测井
测井解释
定理分析
电测井
spontaneous potential log dipole moment numerical analysis
mathematical model waterflooded zone log interpretation chart quantitative analysis
