缝洞型碳酸盐岩油藏缝洞体的综合识别——以塔河奥陶系6-7-8区为例
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摘要
洞体的识别对缝洞型碳酸盐岩油藏井网部署及开发效果起至关重要的作用。该文以塔河油田奥陶系6-7-8区为例介绍了一种动静态资料相结合识别缝洞体的方法,它将单井所处位置的残丘规模、地震反射特征、振幅变化率特征、储层发育情况、产能特征相结合分析优选出了四类有利缝洞体组合模式,依次为:Ⅰ类残丘+串珠反射、Ⅱ类残丘+杂乱强反射、Ⅲ类无残丘+串珠反射(或杂乱强)、Ⅳ类残丘+弱反射;且认为最有利的为Ⅰ、Ⅱ类,Ⅲ、Ⅳ类也具有一定的产能。
The identification of fracture-cavern body plays very important role on wells de-ployment and development effect evaluation.Take 6-7-8 well block in the Tahe oilfield for example,a method to identify fracture-cavern body with dynamic and static data was present. With this method, the scales of monadnock,the characteristics of seismic reflection,the devel-opment of reservoir and the capacity were analyzed, then four composite modes were opti-mized.The first pattern is monadnock and a string of beads reflection.The second is monad-nock and mixed and disordered strong reflection.The third is without monadnock and a string of beads reflection or mixed and disordered strong reflection.The last is monadnock and weak amplitude rate.The first and the second combination patterns are more preferable,andthe last two also have some potencial.
引文
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