An rock-physics-based complex pore-fluid-distribution model to seismic dynamical response
文献类型：会议论文
| 作者 | Zhang, Chengyuan1; Liu, Xiaoyan1; Xi, Daoying2; Liu, Quansheng1 |
| 出版日期 | 2008 |
| 会议日期 | SEP 16-19, 2007 |
| 会议地点 | Daejeon, SOUTH KOREA |
| 关键词 | dynamic response rock-physics DEM method seismic velocity |
| 期号 | 9-11 |
| DOI | 10.1142/S021797920804689X |
| 页码 | 1437-1442 |
| 英文摘要 | It is very important to know how the reservoir rock and its fluid properties are linked to seismic dynamic response. Literatures show that there are a variety of rock-physics models such as the most famous Biot-Gassmann equation aimed at the relationship between seismic velocity and liquid saturation. Most of these models make a fundamental assumption of one fluid phase or homogeneous phase within the pore volume. In this paper, we discuss possible seismic velocities change in a two immiscible pore fluids (i.e. water-gas) saturated reservoir with patchy saturation distribution. It is found that P-wave velocity of a reservoir rock with the same saturation but different pore fluid distribution exhibits noticeable variation and deviate overall from Gassmann's results. We use DEM theory to explain this phenomenon. It belongs to hybrid approach in rock-physics modeling and can handle complex pore-fluid-distribution cases. Based on the modeling study, we found that various fluid-distribution models may significantly affect the modulus and P-wave velocity. The seismic reflection time, amplitude and phase characteristics may change with the choice of pore-fluid-distribution models. Relevant rock mechanical experiments indicate the same trend of seismic responses. It also be proven by seismic reservoir monitoring experiment (time lapse study) that incorrect conclusion may be drawn about the strong seismic reflection in pure Utsira Sand if the microscopic pore-fluid-distribution effects are not taken into account. |
| 会议录 | INTERNATIONAL JOURNAL OF MODERN PHYSICS B
 |
| 会议录出版者 | WORLD SCIENTIFIC PUBL CO PTE LTD |
| 会议录出版地 | SINGAPORE |
| 语种 | 英语 |
| WOS研究方向 | Physics |
| WOS记录号 | WOS:000256702600064 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/4500]  |
| 专题 | 岩土力学所知识全产出_会议论文 |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech ; 2.Univ Sci & Technol China |
| 推荐引用方式 GB/T 7714 | Zhang, Chengyuan,Liu, Xiaoyan,Xi, Daoying,et al. An rock-physics-based complex pore-fluid-distribution model to seismic dynamical response[C]. 见:. Daejeon, SOUTH KOREA. SEP 16-19, 2007. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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