Using seismic rock physics modeling to predict accumulation unit of biogenetic gas in Sanhu area
Online published: 2010-12-15
Aimed at the Quaternary thin interbed of loose sand and shale in Sanhu area, the exploration of biogenetic gas is analyzed. It pointed out that to quantitatively predict the gas reservoir accumulation unit and the heterogeneity of the controlling factors is the key for looking for lowsaturation lithologic gas reservoir in the eight major slope areas. Based on the seismic data, combined with logging, geology and testing data, as well as making the two dimensional seismic data gridding, the variogram analysis and sequential indicator stochastic simulation method are applied to establish 3D petrophysical stochastic model, and the petrophysical properties body is obtained which is more sensitive to gas-bearing abnormal. The most sensitive gas threshold range of petrophysical properties body is analyzed so as to build up the gas and water identification model, and carry out the fluid substitution for the 3D model of petrophysical properties. The grid cell distribution model and seismic reservoir unit are obtained and finally the possible 3D spatial distribution characteristics of biogenetic gas reservoir can be acquired. The drilling result shows that the S wave petrophysical simulation method guided by seismic-petroleum accumulation science can predict the 3D distribution of natural gas reservoir, and good application effects are obtained.
HU Yuan , ZHANG Ziming , WANG Enhui . Using seismic rock physics modeling to predict accumulation unit of biogenetic gas in Sanhu area[J]. Lithologic Reservoirs, 2010 , 22(4) : 20 -24 . DOI: 10.3969/j.issn.1673-8926.2010.04.004
/
| 〈 |
|
〉 |