| 本文已被：浏览次 下载次 |
码上扫一扫！ |
|
|
|
| Reflection coefficient changing of acoustic impedance interface during oilfield development |
|
WANG Da-wei1,XU Jian-hua2,ZUO Shao-quan3,LI Shao-zhen4,CHEN Jun3,CHANG Dong-xia4
|
|
(1. Key Laboratory of Marine Geology & Environment, Institute of Oceanology ’ Chinese Academy of Sciences,Qingdao 266071, China ;2. Korla Branch of Bureau of Geophysical Prospecting Corporation Limited，PetroChina, Korla 841000, China;3. Liaohe Oilfield Companyf PetroChina, Panjin 124010,China;4. Liaohe Jinma Oilfield Corporation Limited, PetroChina, Panjin 124010, China)
|
| Abstract: |
| Through formula deduction and model simulation, the certain function relationship was researched between the seismic reflection coefficient and acoustic impedance change of oil layer. The results show that the amplitude and waveform characters of difference seismic depend on the oil layer acoustic impedance change. If the oil layer acoustic impedance increases ,the seismic reflection coefficient of the oil layer boundary increases. Conversely, the seismic reflection coefficient decreases. The tendency of oil layer acoustic impedance controls the velocity of seismic reflection waveform amplitude variation. The amplitude of differential seismic waveform caused by acoustic impedance decrease is greater than the one caused by equivalent acoustic impedance increase. The production data research results verify the reliability of the conclusions. |
| Key words: time lapse seismics acoustic impedance interface reflection coefficient |
|
|