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锡林好来油田分布大量的白云质泥岩缝洞型储集层,缝洞的发育对砂岩储集层的物性具有重要的意义。不彻底的白云化作用及局部发育断裂会导致缝洞分布不规律,是否存在缝洞对声波时差值和密度值造成了不同的影响,从而导致在复杂砂岩储层中不能有效地利用交会图版识别有效储集层。本文考虑缝洞因素建立声波时差-密度图版得到了不同的解释标准。结合实例分析表明,在缝洞分布不规律的复杂砂岩储层中,考虑缝洞因素建立图版的方法能够更加有效地识别有效储集层,提高了解释精度。
The distribution of a large number of dolomitic mudstone fractured-cave reservoirs in the Xilinlailai Oilfield is of great significance to the physical properties of sandstone reservoirs. Incomplete dolomitization and local developmental fractures lead to irregular distribution of the fractures, and the presence or absence of fractures has different effects on the acoustic jet lag and density, resulting in the failure to effectively utilize the Rendezvous Plate in complex sandstone reservoirs Identify the effective reservoir. In this paper, we consider the cavernous factors to establish the sonic time difference-density plate to get different interpretation standards. The case study shows that in the complicated sandstone reservoirs with irregular distribution of fractures, it is more effective to identify the effective reservoirs and improve the interpretation accuracy by establishing the plate layout considering the fractures.