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到目前塔河油田共有四口以奥陶系为目的层的水平井进行了成像测井,通过对这些成像测井资料的分析,可以看到水平井成像测井响应特征在某些方面与直井有较大的差异,如裂缝在直井中多为高视倾角而在水平井的FMI成像图上表现为视倾角较低,真倾角高;硅质团块、方解石充填裂缝等也与直井有较大的区别。有些特征与直井看似相同,实则有别,如溶蚀孔洞等。认真分析水平井成像测井响应特征,对于确定有效储层及确定今后奥陶系水平井的钻井方向具有实际意义。
At present, there are four horizontal wells in Tahe Oilfield with Ordovician as the target layer. Through the analysis of these imaging logging data, it can be seen that the characteristics of horizontal well imaging logging response are similar to those of vertical wells For example, fractures are mostly high-angle dip in vertical wells and low-angle dip and high true dip in horizontal well FMI images. Siliceous lumps and calcite-filled fractures are also more obvious than vertical wells Big difference. Some features and vertical wells appear to be the same, but actually different, such as corrosion holes. A careful analysis of the logging response characteristics of horizontal well imaging is of practical significance for determining the effective reservoir and determining the drilling direction of Ordovician horizontal wells in the future.