Study Of The Fine Shallow Gas Reservoir Description At 3-4 Block In Gudong Gas Field, Zhanhua Sag

In Sheng Li oil field, the most of the gas reservoir in Gu Dong oil region is shallow and preserved in lithologic trap. The main producing position is in the Min Huazhen formation and the upper section of Guan Tao formation. The character of the present production situation is the low recovery efficiency, low gas productivity rate, low degree of reserve recovery, low flow potential ,low gas well utilization ratio and few backup resources. As the requirement to nature gas larger and larger, it's necessary to make fine gas reservoir description. In the article, well log information, drilling core information, production data and testing data are fully used to built gas reservoir geologic model, clarify structural pattern, sedimentary system, describe parameters distribution and inhomogeneity of reservoir, furthermore to evaluate of reserves, make gas reservoir comprehensive evaluation and increase recovery efficiency of the gas reservoir.