复杂泥浆侵入环境下阵列侧向测井正演响应特性

发布时间：2018-04-29 06:00

本文选题：复杂泥浆侵入 + 阵列侧向测井　；参考：《科学技术与工程》2017年32期

【摘要】：阵列侧向测井仪器相较常规双侧向测井仪器可以得到多种探测深度的电阻率值(R0~R5),能更精细的描述侵入剖面,从而更准确求取地层电性参数,目前已在油田得到较广泛的应用。利用有限元法对复杂泥浆侵入环境下的阵列侧向测井响应进行了数值模拟。在研究了阵列侧向测井探测特性的基础上,对泥浆侵入的复杂情况逐一进行了研究。研究发现,探测深度越大的模式对应电阻率值受泥浆不对称侵入程度的影响越大;探测深度较浅的模式的电阻率值受强纵向泥浆侵入向各向异性影响较大;阵列侧向测井响应普遍受径向泥浆侵入各向异性影响严重;中探测深度的阵列侧向响应对低阻环带比较敏感。
[Abstract]:Compared with conventional dual lateral logging tools, array lateral logging tools can obtain various resistivity values of R0 / R5, which can more accurately describe the intrusive profile and thus obtain more accurate formation electrical parameters, which have been widely used in oil fields at present. The response of array lateral logging in complex mud intrusion environment was numerically simulated by finite element method (FEM). On the basis of studying the characteristics of array lateral logging, the complex situation of mud intrusion is studied one by one. It is found that the relative resistivity value of the model with higher detection depth is affected by the degree of asymmetric mud invasion, and the resistivity value of the mode with lower detection depth is greatly affected by the strong longitudinal mud invasion anisotropy. The array lateral logging response is generally affected by the radial mud invasion anisotropy, and the array lateral response with medium detection depth is sensitive to the low resistance ring band.
【作者单位】：长江大学油气资源与勘探技术教育部重点实验室地球物理与石油资源学院;
【基金】：国家自然科学基金(41474115) 湖北省教育厅科学技术研究项目(D20141302)资助
【分类号】：P631.81

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