The Design Of Underground Gas Storage In Su M Gas Reservoir

The gas storage construction is an important measure to ensure safe-stable gas supply,optimize the gas supply system and satisfy safety peak shaving.Su M gas storage is the counter-part system of the shanxi-beijing three line.It belongs to the seasonal peak shaving type gas storage.It can be used as the shanxi-beijing seasonal peak shaving and accident emergency gas supply.Once completed,it will play a peak shaving of gas supply for Beijing,tianjin and hebei area.Combining with basic situation,firstly the research including stratigraphic characteristics and effectiveness seal evaluation to block structural trap about the main cap rock and the function of the lateral of fault boundary have been done.Secondly the research content includes studying the characteristics of gas reservoir development and analyzing test data and assessmenting injection-production capacity.Then the study includes designment of the basic parameters and operation monitoring scheme by optimizating multiple sets of plan.Finally,the gas storage monitoring scheme has been studied.The following main research achievement and conclusion:through effectiveness seal evaluation to block structural trap,the main cap rock sealing and the function of the lateral sealing of fault boundary are relatively excellent.In addition,the block with stable reservoir distribution and good connectivity,has the basic geological conditions of gas storage construction.By analyzing test data and injection-production capacity assessment,the reasonable injection-production capacity of the different well type has been determined.The injection of vertical well is 15x104m3.The injection of horizontal well is 45x104m3.Through optimizating multiple sets of plan,the basic parameters and operation monitoring scheme have been designed.The reservoir effective capacity is 1.94x108m3.The working capacity is 0.72x108m3.The number of new drilling horizontal well is 1.The number of utilizing old well use is 1.The gas storage monitoring scheme has been designed.The construction period for gas storage is three years.The Plan implementation schedule and guarantee measures during the period of construction have been put forward.