新疆石油地质

新疆石油地质 ›› 1998, Vol. 19 ›› Issue (6): 462-464.

• • 上一篇    下一篇

储集层孔隙度、泥质含量与地震纵横波传播速度的关系

黄凯, 杨晓海, 徐群洲, 赖仲康, 张露菲   

  1. 新疆石油管理局地调处 乌鲁木齐 830011
  • 收稿日期:1997-07-22 发布日期:2020-09-19
  • 作者简介:黄凯:高级工程师 地球物理勘探

THE RELATION AMONG POROSITY, SHALINESS AND P- AND S-WAVE VELOCITY OF SEISMIC WAVE

Huang Kai, Yang Xiaohai, Xu Qunzhou, Lai Zhongkang, Zhang Lufei   

  1. Geologic Survey Department, Xinjiang Petroleum Administration Bureau, Urumqi 830011
  • Received:1997-07-22 Published:2020-09-19
  • About author:Huang Kai, Senior Engineer, Geophysical Prospecting

PDF

601

摘要： 岩石地震波传播速度、纵横波波速比受多种因素的影响, 因此,用常用的Wyllie, Pickett 公式求取孔隙度有局限性,且误差较大。为此,选取了准噶尔盆地西部地区69 块井下岩石样品,通过岩石薄片测定了碎屑岩中的泥质含量,并在实验室内模拟测试了饱含油、饱含水岩样纵横波传播速度。测试结果表明,岩石地震波传播速度、纵横波波速比与岩石的孔隙度、泥质含量成正比;孔隙度对岩石地震波传播速度的影响要比泥质含量的影响敏感;饱含水岩样的泥质含量对岩石地震波传播速度、纵横波波速比的影响程度要大于饱含油岩样。测试分析得出的结论对储集层横向预测有一定指导意义。

关键词: 储集层, 孔隙度, 泥质含量, 地震波, 纵波速度, 横波速度, 纵波速度/横波速度, 相关分析

Abstract: The velocity of seismic wave and P-and S-wave velocity ratio are controlled by many factors.Therefore porosity obtained from Wyllie and Pickett formula has limitations and errors.To overcome these problems, 69 rock samples in western Junggar basin were selected and shaliness of clastic rock measured on thin section.Moreover, P- and S-wave velocity of rock samples saturated with oil and water were measured in lab.The results showed that velocity of seismic wave and P- and S-wave velocity ratio are direct proportion to porosity and shiliness of rock ;while veloci ty of seismic wave is more sensitive to porosity than to shaliness, and both parameters are more sensi tive to shaliness of sample saturated with water than to that of sample saturated with oil.This result has guidance to lateral prediction of reservoir.

Key words: Reservoir, Shaliness, Seismic wave, P-wave velocity, S-wave velocity, PV-SV, Correlation analyses