Abstract：Sulige gas field is the biggest gas field of China found in Ordos Basin up-to-now,which maingas producting formation is sandstone reservoir ofHe 8 Member,near the bottom of Upper PaleozoicLower Permian Lower Shihezi Formation, belonging to thin-interbedded reservoir of typical continental sedimentation.Appraisal well results basedon large hole spacing(10～15km) show that thearea is composite sandstone gas reservoir both gas-bearing with large area and typical heterogeneous.In nearly 10000km2 exploration area,the maximumthickness of gas-bearing layer revealed by drillingis 15～20m,while minimum is only 1～2m;min-production of single well(non-resistant flow) is 2×104m3/d and maximum can reach to 120×104m3/d,varying in a large scope.Therefore,on the basisof prediction of reservoir thickness,qualitative orsemi-quantitative gas-bearing prediction of sand-stone reservoir is very important and necessary toeffectively improve success rate of explorationwell.On the basis of integrative analysis of loggingand geologic data and through forward modeling,studying the AVO response of He 8 reservoir inseismic data and using petro-physical measuringresults for inversion of hydrocarbon detection aremajor tools for gas bearing prediction of pre-drilling targets in the area,which gained better ap-plied results in practice.
史松群, 赵玉华. 苏里格气田低阻砂岩储层的含气性预测研究[J]. 石油地球物理勘探, 2003, 38(1): 77-83.
Shi Songqun, Zhao Yuhua. Research on gas-bearing prediction using AVO in sandstone reservoir with low-impedance,Sulige gas field. OGP, 2003, 38(1): 77-83.
