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首页> 外文期刊>Fresenius environmental bulletin >FRACTURE LOGGING EVALUATION OF UPPER PALEOZOIC TIGHT SANDSTONE GAS RESERVOIRS IN THE EASTERN MARGIN OF THE ORDOS BASIN
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FRACTURE LOGGING EVALUATION OF UPPER PALEOZOIC TIGHT SANDSTONE GAS RESERVOIRS IN THE EASTERN MARGIN OF THE ORDOS BASIN

机译：鄂尔多斯盆地东缘上古生界致密砂岩气藏裂缝测井评价。

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摘要

The prediction of tight sandstone fractures in low-amplitude tectonic zone using conventional logs is a difficult and expanding field for the evaluation of oil and gas reservoirs. Taking the Upper Paleozoic tight sandstone in the low-altitude tectonic zone of the eastern Ordos Basin as an example, the logging prediction method of tight sandstone fractures were systematically studied based on the conventional logging and FMI imaging logging data. A new fracture index (Fc) was constructed to identify fractures based on variable scale fractal probability method. There is a very good positive exponential correlation between the constructed Fc and the fracture linear density. As the fracture linear density increases from 1 m-1 to 4 m-1, the Fc value increases from approximately 0.1 to 0.5. The fracture identification rate of this model is between 66.7% and 83.3%. For the main gas layers or gastesting layers, the fracture prediction results are very consistent with their actual distribution, indicating the effectiveness of this method.
机译：利用常规测井资料预测低振幅构造带致密砂岩裂缝是油气储量评价的难点和扩展领域。以鄂尔多斯盆地东部低海拔构造带上古生界致密砂岩为例，基于常规测井和FMI成像测井资料，系统研究了致密砂岩裂缝的测井预测方法。基于变尺度分形概率方法，构造了新的裂缝指数（Fc）来识别裂缝。构造的Fc与断裂线密度之间存在非常良好的正指数相关性。随着断裂线密度从1 m-1增加到4 m-1，Fc值从大约0.1增加到0.5。该模型的骨折识别率在66.7％和83.3％之间。对于主气层或试气层，裂缝预测结果与实际分布非常吻合，说明了该方法的有效性。

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