Gas Field Of High Quality Diagenesis Of Upper Paleozoic

The paper based on diagenesis , combining with sediment action ,the reservoir of the Sulige Gas Field is confirmed by using subfacies analysis first , then defining sandstone distributing of the reservoir , the reservoir diagenesis is the target of the research.By analyzing the sandstone sample ,there is abundance volcanic substance in the reservoir of the area. The volcanic substance diagenesis is different, which makes the reservoir characteristics different.For knowing the effect of the diagenesis on the sandstone reservoir ,the volcano event is reviewed ,it is ensured that the volcanic substance comes from the Yinsan area of the north of the Basin by element analyzing of geochemistry. Based on this, research on the structure and the type characteristics of the substance which is suffered diagenesis, this is the base of classifying statistic of volcanic substance the remain, quantity of eroding. According to these, the varies types volcanic substance physical characteristics determine the result of the diagenesis, that is to say, intermediate-basic calc-alkline series substance erode easily, intermediate aciding rock rarely erode, this is essence reason of the reservoir characteristics diffent.There are two factor to control forming high quality the Sulige Gas Fieldr, one is sedimentary condition which is crucial factor, another is that abundance volcanic substance is dissolved to form second pore which is the condition of substance. The volcanic cutting which compose with high quality reservoir is intermediate-basic calc-alkline series substance rigid rock cutting and crystalloid cutting.The factor of forming the Suilige Gas Field high quality reservoir is that the abundance intermediate-basic calc-alkline series volcanic substance in high energy water way middle shoal is eroded, which compose the reservoir.