期刊文献+
共找到4篇文章
< 1 >
每页显示 20 50 100
页岩气层测井响应特征及其含气量评价 被引量:7
1
作者 郝孝荣 《科技资讯》 2012年第28期84-85,共2页
本文在大量调研分析的基础上,通过对页岩气的岩性、物性和地球化学特征综合分析,总结归纳了页岩气层测井响应特征;从页岩气评价的特殊性出发,通过四性关系研究,有针对性地选取测井项目,探索对页岩含气量的测井解释模式,对于今后页岩气... 本文在大量调研分析的基础上,通过对页岩气的岩性、物性和地球化学特征综合分析,总结归纳了页岩气层测井响应特征;从页岩气评价的特殊性出发,通过四性关系研究,有针对性地选取测井项目,探索对页岩含气量的测井解释模式,对于今后页岩气定性和定量评价工作的开展具有重要的参考意义。 展开更多
关键词 页岩气 测井相应 测井解释模型 含气量评价
下载PDF
鄂东南地区深部煤层气煤体结构测井评价研究 被引量:8
2
作者 付玉通 张伟 +1 位作者 李永臣 代宸宇 《中国煤炭》 北大核心 2017年第9期31-34,47,共5页
为查明延川南深部煤层气煤体结构分布规律,以探井煤层取芯资料和测井数据为研究对象,利用交汇图法建立了煤体结构识别标准。为方便研究和生产需要,将煤层按煤体结构分为粉煤和块煤两类,二者可以通过自然伽马-补偿密度、自然伽马-深侧向... 为查明延川南深部煤层气煤体结构分布规律,以探井煤层取芯资料和测井数据为研究对象,利用交汇图法建立了煤体结构识别标准。为方便研究和生产需要,将煤层按煤体结构分为粉煤和块煤两类,二者可以通过自然伽马-补偿密度、自然伽马-深侧向交汇图定性识别,粉煤一般具有高自然伽马、高补偿密度、低深侧向、大井径等测井响应特征,块煤具有低自然伽马、低补偿密度、高深侧向等测井响应特征。研究结果表明,粉煤主要分布在断层附近,块煤主要分布在断层和褶皱不发育区。 展开更多
关键词 深部煤层 煤体结构 测井评价 测井相应特征 粉煤 块煤
下载PDF
三塘湖盆地火山岩岩性的识别
3
作者 韩彦军 《化工管理》 2014年第20期245-245,共1页
通过岩心观察、薄片鉴定、交会图、测井曲线特征等识别三塘湖盆地马朗凹陷地区的火山岩岩性,认为三塘湖马朗凹陷主要发育玄武岩、安山岩、火山角砾岩、凝灰岩四大类火山岩。结合岩心观察、薄片鉴定等资料对上述四类岩石进行了测井曲线... 通过岩心观察、薄片鉴定、交会图、测井曲线特征等识别三塘湖盆地马朗凹陷地区的火山岩岩性,认为三塘湖马朗凹陷主要发育玄武岩、安山岩、火山角砾岩、凝灰岩四大类火山岩。结合岩心观察、薄片鉴定等资料对上述四类岩石进行了测井曲线特征总结,进而应用交会图、主成分分析等手段建立了岩性识别模式,完成对非取心段的岩性识别。此外,通过对全井段取心井的岩性识别手段的运用,利用RD-DEN图版对火山碎屑岩中的凝灰岩和火山角砾岩进行了区分,识别正确率达到88%。 展开更多
关键词 岩性识别 火成岩 测井相应 交会图 三塘湖盆地
下载PDF
A practical application of photogrammetry to performing rib characterization measurements in an underground coal mine using a DSLR camera 被引量:1
4
作者 Brent A.Slaker Khaled M.Mohamed 《International Journal of Mining Science and Technology》 SCIE EI CSCD 2017年第1期83-90,共8页
Understanding coal mine rib behavior is important for inferring pillar loading conditions as well as ensuring the safety of miners who are regularly exposed to ribs. Due to the variability in the geometry of undergrou... Understanding coal mine rib behavior is important for inferring pillar loading conditions as well as ensuring the safety of miners who are regularly exposed to ribs. Due to the variability in the geometry of underground openings and ground behavior, point measurements often fail to capture the true movement of mine workings. Photogrammetry is a potentially fast, cheap, and precise supplemental measurement tool in comparison to extensometers, tape measures, or laser range meters, but its application in underground coal has been limited. The practical use of photogrammetry was tested at the Safety Research Coal Mine, National Institute for Occupational Safety and Health(NIOSH). A commercially available, digital single-lens reflex(DSLR) camera was used to perform the photogrammetric surveys for the experiment. Several experiments were performed using different lighting conditions, distances to subject,camera settings, and photograph overlaps, with results summarized as follows: the lighting method was found to be insignificant if the scene was appropriately illuminated. It was found that the distance to the subject has a minimal impact on result accuracy, and that camera settings have a significant impact on the photogrammetric quality of images. An increasing photograph resolution was preferable when measuring plane orientations; otherwise a high point cloud density would likely be excessive. Focal ratio(F-stop) changes affect the depth of field and image quality in situations where multiple angles are necessary to survey cleat orientations. Photograph overlap is very important to proper three-dimensional reconstruction, and at least 60% overlap between photograph pairs is ideal to avoid unnecessary post-processing. The suggestions and guidelines proposed are designed to increase the quality of photogrammetry inputs and outputs as well as minimize processing time, and serve as a starting point for an underground coal photogrammetry study. 展开更多
关键词 PHOTOGRAMMETRY Coal mining UNDERGROUND Rib characterization
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部