| 致密砂岩气层中成岩相对岩电特征的影响 |
| |
| 引用本文： | 刘洪平,骆杨,赵彦超,陈召佑,穆国栋.致密砂岩气层中成岩相对岩电特征的影响[J].地球科学,2017,42(4):652-660. |
| |
| 作者姓名： | 刘洪平 骆杨 赵彦超 陈召佑 穆国栋 |
| |
| 作者单位： | 1.中国地质大学构造与油气资源教育部重点实验室，湖北武汉 430074 |
| |
| 基金项目： | 国家自然科学基金青年基金41402117构造与油气资源教育部重点实验室开放基金TPR-2015-11 |
| |
| 摘 要： | 致密砂岩气层的研究是目前的研究前沿之一.利用铸体薄片、物性、高压压汞、micro-CT、岩电实验等分析化验资料，探讨了鄂尔多斯盆地定北地区二叠系太原组致密砂岩不同成岩相类型对岩电特征的控制作用.研究表明:研究区可以划分为4种成岩相类型，包括硅质胶结成岩相、高岭石部分充填成岩相、不稳定组分溶蚀成岩相，压实致密成岩相.4种成岩相类型地层因素和孔隙度在同一趋势线上，可以采用统一的a，m值.4种成岩相类型的n值有明显差异，取值依次为2.30、1.51、2.03和4.04.含气饱和度解释实例显示，对不同成岩相取不同n值与试气结果吻合较好，优于n值取理论值2的结果.
|
| 关 键 词： | 致密砂岩 成岩相 岩电特征 测井 石油地质 |
| 收稿时间： | 2016-10-25 |
Effects of Diagenetic Facies on Rock Electrical Properties in Tight Gas Sandstones |
| |
| Abstract: | The research about tight gas sandstones is one the forefront research. In order to characterize rock electrical properties in tight gas sandstones of different diagenetic facies in Taiyuan Formation, Dingbei Area, we conducted casting thin sections, porosity and permeability, micro-CT and high pressure mercury intrusion/withdrawal method on these sandstones. Four diagenetic facies are observed in the area, namely, quartz cementation diagenetic facies, kaolinite partially filled diagenetic facies, unstable components resolution diagenetic facies and tight compaction diagenetic facies. The formation factor shows very good relationship with porosity regardless of diagenetic facies, hence a and m are set constant at 15.88 and 0.82 for all the diagenetic facies. Saturation exponent (n) are variable among the different diagenetic facies, 2.30, 1.51, 2.03 and 4.04 are selected repectively for the n value of the four diagenetic facies. Examples show that the chosen electrical parameters have good agreements with the gas production test, much better than the result of chosen the theoretical n value of 2. |
| |
| Keywords: | |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《地球科学》浏览原始摘要信息 |
|
点击此处可从《地球科学》下载全文 |
|
