| 未固结砂岩地震弹性性质的岩石物理模型表征研究 |
| |
| 引用本文： | 邓继新,韩德华,王尚旭.未固结砂岩地震弹性性质的岩石物理模型表征研究[J].石油地球物理勘探,2010,45(2):253. |
| |
| 作者姓名： | 邓继新 韩德华 王尚旭 |
| |
| 作者单位： | 成都理工大学信息工程学院;University of Houston;中国石油大学CNPC物探重点实验室; |
| |
| 基金项目： | 自然科学基金项目(40804025); 国家重点基础研究发展计划(973)项目(2007CB209600) |
| |
| 摘 要： | 未固结碎屑砂岩储层是国内外重要的油气储层类型之一。在地震勘探中通常使用Hertz Mindlin(HM)接触模型来计算未固结砂岩的等效弹性特征。由于未固结碎屑砂岩在结构上具有不规则排列特征，在弹性波作用下颗粒间的应变特征不满足H M接触模型的基本假设，造成该模型在使用中会得到明显偏高的剪切模量值。针对这些不足，本文给出了利用切向刚度校正因子C及组合参数R/R对HM接触模型进行修正的方法，以考虑颗粒间松弛作用及颗粒不规则性对该模型计算结果的影响。分选性是未固结碎屑砂岩重要的结构特征，利用对未固结碎屑砂岩样品实验测试结果定性分析了分选性变化对介质储集层物性特征及地震弹性特征的影响，并结合岩石物理相关理论建立了表征未固结砂岩分选性变化对地震弹性特征影响的地震岩石物理模型
|
| 关 键 词： | 未固结砂岩 松弛作用 地震岩石物理模型 分选性 HM接触模型 |
Rock physics modeling characteristic studies on seismic elastic properties of unconsolidated sandstone |
| |
| Deng Ji-xin,Han De-hua , Wang Shang-xu. . College of Information Engineering,Chengdu University of Technology,Chengdu,Sichuan Province,China. University of Houston,Houston,USA. CNPC Key Lab of Geophysical Prospecting,China University of Petroleum,Beijing City,China.Rock physics modeling characteristic studies on seismic elastic properties of unconsolidated sandstone[J].Oil Geophysical Prospecting,2010,45(2):253. |
| |
| Authors: | Deng Ji-xin Han De-hua Wang Shang-xu College of Information Engineering Chengdu University of Technology Chengdu Sichuan Province China University of Houston Houston USA CNPC Key Lab of Geophysical Prospecting China University of Petroleum Beijing City China |
| |
| Affiliation: | Deng Ji-xin1,Han De-hua2 and Wang Shang-xu3. 1. College of Information Engineering,Chengdu University of Technology,Chengdu,Sichuan Province,610059,China2. University of Houston,Houston,USA3. CNPC Key Lab of Geophysical Prospecting,China University of Petroleum,Beijing City,102249,China |
| |
| Abstract: | The unconsolidated clastic sandstone reservoir is one of the important reservoirs. In seismic exploration the Hertz-Mindlin contact model is often used to predict the equivalent elastic properties of unconsolidated sandstone. Due to the irregular character for the grain structure of the unconsolidated clastic sandstones, the intragranular strain characteristics under action of elastic wave does not satisfy the basic assumption of Hertz-Mindlin contact model, and then results in a relative larger shear modul... |
| |
| Keywords: | unconsolidated sands relaxation effect seismic rock physics model selectivity Hertz-Mindlin contact model |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《石油地球物理勘探》浏览原始摘要信息 |
|
点击此处可从《石油地球物理勘探》下载全文 |
|
