Research On Water Production Mechanism And Its Development Measures Of Liuyangbao T2 Gas Reservoir

LiuYangBao gas field located in the southwest side of the Su LiGe gas field,it is in early development period,water production is widespread and large quantity in well gas test,gas and water distribution and its controlling factors are not understanding clear,and source of the product water,constitution of the product water,feature of the product water is not clear,lack of targeted developing countermeasures,rolling development process is restricted.For the reason of being unclear of the water production.Firstly,using small layer contrast,formation spread,sand spread research,we make a analyze of geological features of the gas field.Secondly,based on these existing problems,using the geophysical,geological,logging methods,we clear the gas and water distribution,and respectively research on gas and water distribution controlling factors which are source rock,reservoir conditions and structure.Thirdly,research on water production mechanism,using formation water ion,salinity,characteristic coefficient make clear formation water feature,then according to daily water production,we divided wells into four types to analysis.And we research on source of water and constitute of formation water.Finally,it against different type of gas wells,we make four different development measures which are plugging,drainage gas,deplugging and perforation supplement to accelerate the field development process.