水平井裂缝性储层阵列侧向测井正演响应影响因素

发布时间：2018-05-20 23:29

本文选题：水平井 + 裂缝性储层　；参考：《断块油气田》2017年06期

【摘要】：裂缝性储层中裂缝的发育特征对储层产能有重要影响,侧向类测井由于其较强的电流聚焦特性,常用于裂缝性油气藏的评价工作。阵列侧向测井仪是一种新型的侧向测井仪器,具备更强的电流聚焦能力和更高的纵向分辨率。基于平板状裂缝模型,建立三维宏观各向异性球状介质模型,运用三维有限元数值算法,研究了水平井中阵列侧向测井仪在裂缝性地层中的响应特性。研究表明:仪器响应随裂缝角度的变化会出现幅度差极性变化,且临界角大小与裂缝孔隙度有关;仪器响应随裂缝孔隙流体电阻率的增大而增大,基岩电阻率与裂缝孔隙流体电阻率比值小于100后,裂缝孔隙流体电阻率变化对仪器响应影响不大;仪器响应随基岩电阻率的增大而增大。该研究为裂缝性储层的定性、定量评价提供一定参考依据。
[Abstract]:The characteristics of fracture development in fractured reservoirs have an important influence on reservoir productivity. Lateral logging is commonly used for evaluation of fractured reservoirs because of its strong current focusing characteristics. Array lateral logging is a new type of lateral logging tool, which has stronger current focusing ability and higher longitudinal resolution. A three-dimensional macroscopic anisotropic spherical medium model is established, and the response characteristics of the horizontal well array laterolog in fractured strata are studied by the three-dimensional finite element numerical algorithm. The study shows that the response of the instrument to the variation of the fracture angle will change the amplitude difference, and the critical angle is related to the porosity of the fracture. The response of the instrument increases with the increase of the pore fluid resistivity, and the resistivity of the bedrock and the pore fluid resistivity is less than 100. The change of the resistivity of the fractured pore fluid has little influence on the response of the instrument, and the response of the instrument increases with the increase of the resistivity of the bedrock. Test the basis.
【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;长江大学地球物理与石油资源学院;中国石油塔里木油田公司勘探开发研究院;
【基金】：国家自然科学基金项目“地层条件下富有机质页岩电磁响应机理与应用基础研究”(U1562109)
【分类号】：TE937

【相似文献】