Exploration of Gas Reservoir Modeling Technology and Its Application in Sulige Gas Field: A Case of Sudong-X Reservoir

Underground Gas Storage (UGS) is the main facility to ensure the safe supply of natural gas and an important part of national energy security. Changqing Oilfield actively responds to the call and selects well area X in the eastern part of Surige Gas Field as the target of gas storage construction. The gas reservoir in this well area is well developed in the lower Paleozoic Ordovician Ma55, which is a depleted oil and gas reservoir with pore permeable formation of original saturated oil and gas water as the storage medium. In order to learn the reservoir distribution pattern deeply and accurately describe the spatial distribution of reservoir properties and the non-homogeneous characteristics of the reservoir, a multi-data fusion 3D geological model is established using a differentiated modeling method. This precise geological model can be used as a guide to conduct research and application of optimal well location deployment of injection and extraction well, which provides a basis for the construction of gas storage.