摘要
根据岩心观察和微电阻率扫描成像测井等资料,对克深气田巴什基奇克组储层的裂缝发育特征进行研究。重点针对克深2-2-12井基于油基和水基泥浆采集得到的成像测井图像进行对比,并总结油基和水基泥浆成像测井图在裂缝识别效果等方面的差异。研究结果表明,与水基泥浆相比,规模较大的裂缝在油基泥浆成像测井图上基本可以识别,但有一些小裂缝显示不清;整体上对高角度缝的拾取率较高,对低角度缝基本无法拾取,且层理等层面信息丢失严重。可通过油基泥浆成像测井与岩心资料对比、标定,并与井径、声波时差以及阵列声波等测井技术序列进行对比验证,进一步提高油基泥浆裂缝识别与解释的精度和准确度。
The fracture development features of the Bashijiqike Formation in Keshen gasfield were studied by making full use of core observation and micro-resistivity image logging interpretation. The image logging results collected in oil-based mud for Well Keshen2-2-12 were compared with those in water-based mud,then the differences between water-and oilbased mud in the effect of fracture recognition were summarized. The results show that large aperture fractures can be identified. However,some small aperture fractures are difficult to be seen in the oil-based mud image logging. Generally,the high-angle fractures are easily to be seen,while the low-angle fractures cannot be detected,and the lost of cross bedding information are serious in the oil-based mud imaging. The oil-based mud image logging results can be calibrated with core observations,the caliper logging,acoustic logging and array acoustic logging,and the accuracy of fracture recognition and interpretation will be improved in this way.
出处
《油气地质与采收率》
CAS
CSCD
北大核心
2015年第6期47-54,共8页
Petroleum Geology and Recovery Efficiency
基金
国家科技重大专项"低渗透碎屑岩储层品质与岩石物理相测井评价方法"(2011ZX05020-008)
国家自然科学基金项目"致密砂岩储层成岩相测井识别方法研究"(41472115)
中国石油创新基金"致密砂砾岩岩性岩相测井识别方法研究"(2013D-5006-030)
关键词
成像测井
油基泥浆
裂缝
岩心
井径
声波时差
阵列声波
image logging
oil-based mud
fracture
core
caliper logging
acoustic logging
array acoustic logging
