Received date: 2013-01-14
Revised date: 2013-04-17
Online published: 2013-08-10
Dagang Oilfield shallow gas reservoir is referred to those with burial depth lower than 400-1500m.Problems exist such as small scale,insufficient gas reservoir energy,and difficult to to be detected.Seismic hydrocarbon detection technology can solve the above problems and achieved good results.Using the pre-stack detection technology which is based on elastic medium model,adopting AVO method to build the forward model,the 3-D seismic data from Dagang District are processed.Gas-bearing prediction has been done according to the AVO anomaliesand it demonstrates the distribution of sandstone with good gas-bearing propert.With the energy absorption analysis technology which is based on the viscoelastic medium model.Shallow gas detection and lateral prediction of very shallow strata have been carried out.The gas highlight characteristics are remarkable.Two potential gas-bearing areas are predicted.With the prediction of seismic attribute gas layer,it is found that the average energy attribute is sensitive to the reaction of gas layer in the study area,and thus determined the plannar distribution of gas reservoirs in the study area.Via the application of the earthquake information reservoir gas-bearing prediction technology,it is expected that there will be 5-6 billion cubic meters of newly added shallow gas reserves.10 target blocks have been screened out and used as a preferred target for future production capacity construction.
ZHANG Xiu-li,ZHANG Gui-ming,YANG Shu-he,ZHUANG Hong-mei,XIAO Mei . Seismic Hydrocarbon Detection Technique and Its Application[J]. Natural Gas Geoscience, 2013 , 24(4) : 815 -820 . DOI: 10.11764/j.issn.1672-1926.2013.04.815
/
| 〈 |
|
〉 |
甘公网安备 62010202000678号