中文摘要：

由于不整合面和断层等的存在,往往使得缝洞型储层出现界面不平行,而这种非平行界面会使得双侧向响应存在误差.采用三维有限元法对缝洞型储层进行模拟,研究了上界面倾角、溶洞距测井仪器中心的距离、溶洞大小,溶洞内流体电阻率、垂直裂缝张开度,垂直裂缝内流体电阻率对双侧向测井响应的影响.结果表明,在水平井中,上界面倾角越大,对双侧向响应影响越大;在水平井非平行界面中,溶洞大小和溶洞距测井仪器中心的距离对双侧向响应影响较大,而溶洞内流体电阻率、裂缝张开度和裂缝流体电阻率对双侧向测井响应影响较小.该研究对水平井非平行界面缝洞型储层的测井解释提供一定的理论依据.

英文摘要：

Since the unconformity and fault zones, unparallel boundary bed appeared in car- bonate fracture reservoirs which could cause certain response errors for dual laterolog in horizontal well. This paper applied the three dimensional finite element methods to model carbonate fracture reservoirs, and analyzed the influence of the interface dip, the distance from cave to the center of logging instrument, the radius and fluid resistivity of cave, and the aperture and fluid resistivity of vertically fracture on dual laterolog response. Results show that for horizontal well, the bigger of interface dip is, the larger influence it has on dual laterolog response; Furthermore,for unparallel boundary bed in horizontal well, dual laterolog response is more sensitive to the distance from the cave to the center of logging in- strument and the radius of cave than the fluid resistivity of cave, and the aperture and fluid resistivity of vertically fracture. This study can provide some theoretical references for the well logging interpretation of unparallel boundary bed carbonate fracture reservoirs.