裂缝储层综合评价方法——以渤南洼陷沙三段下亚段为例
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王长江,男,高级工程师,在读博士研究生,从事油气地质综合解释与油藏描述工作。联系电话:(0546)8715752,E-mail:wangchangjiang.slyt@sinopec.com。

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国家科技重大专项“渤海湾盆地精细勘探关键技术”(2011ZX05006-003)


Comprehensive evaluation method on fractured reservoirs- taking the lower Es3 in Bonan subsag as an example
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    摘要:

    裂缝储层勘探潜力大,其发育受多种因素影响,需要综合地质、测井、地球物理等资料对其进行描述。通过细致分析渤南洼陷沙三段下亚段的地质资料,从多个角度对其裂缝储层进行预测,确定了2种针对性技术,即利用断层图像增强处理技术预测裂缝发育区,利用多属性趋势拟合技术预测Ⅰ类储层平面分布;但仅利用单一技术的预测结果均存在较大的不确定性,故综合2种技术的预测结果,使用叠合显示技术来预测研究区裂缝储层优势区带,以达到提高裂缝储层预测精度的目的。渤南洼陷沙三段下亚段的构造倾角属性与Ⅰ类储层预测厚度的叠合显示结果表明,义182断裂带和南部罗42井附近是有利裂缝储层发育区。实际钻探的义182、义186和义187等高产油井或有良好油气显示的渤页平1井,均位于叠合显示技术预测结果中的有利裂缝储层发育区,表明应用叠合显示技术可提高储层预测精度,是一种有效的裂缝储层综合评价方法。

    Abstract:

    Fractured reservoir exploration has great potential, and its development is affected by many factors, so it is necessary to describe it by combining geology, well logging, geophysical data and other information. Through meticulous analysis on the geological data of the lower Shasan member reservoir in Bonan sag and multi-scale fracture prediction, we selected two kinds of technologies: one is using tomographic image enhancement technology to predict fracture zone and another is using multi-attribute trend fitting technique to predict the planar distribution of the first class reservoir. However, there is a big uncertainty of the prediction result whenusing only a single technology, so it is necessary to combine these two kinds of prediction techniques and use overlay display technology to predict the advantaged fracture reservoir zone in the study area, which can improve the prediction accuracy of fractured reservoirs. We combined the structural dip attribute of the lower Shasan member reservoir with the predicted thickness of the first class reservoir. The results show that the fault zone Yi182 and the southern Luo42 well around are favorable target zones, where the field drilling high-producing wells such as Yi182, Yi186 and Yi187 well etc. show good indication of oil and gas. Well Boye-Ping1 is located near the favorable fractured reservoir zones which are predicted by combining display technologies, and it shows that the application of combining display technologies can improve reservoir prediction accuracy, which is an effective method of comprehensive evaluation of fractured reservoirs.

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王长江,汤婕,李珂.裂缝储层综合评价方法——以渤南洼陷沙三段下亚段为例[J].油气地质与采收率,2014,21(6):68~71

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  • 在线发布日期: 2015-06-04