LW3-1 Gas Field Overall Development Plan - Gas Reservoir Engineering Research

In recent years,the development of natural gas resources attract more and more attention by the state,how to efficiently and rationally develop the natural gas has become China’s natural gas mining in the top priority.In this paper,the oil and gas reservoir characteristics are described based on extensive research on domestic and foreign literatures,gas reservoirs were selected for the study of oil recovery and production capacity.The numerical model of reservoir is established to forecast the dynamic of gas field.The main work is as follows:(1)The reservoir characteristics and reservoir characteristics of gas reservoirs are studied.The results show that the reservoir pore sorting in Li wan 3-1 gas field is good,indicating that pore throat distribution is relatively uniform,and reservoir type is basically a good one.The reservoir physical properties of Liwan 3-1 gas field are mainly affected by reservoir sedimentary facies,shale content and calcareous cement.SAND1 belongs to high porosity and high permeability reservoir,and SAND2 and SAND3 belong to middle porosity and high permeability reservoir.(2)Determine gas well productivity by DST and MDT methold.The rational production capacity of the production wells in Liwan 3-1 gas field is determined by the DST and MDT results,using 1/4-1/6 of the unrestricted flow.(3)The gas field reserves are studied through gas reservoir engineering and numerical simulation.The two methods verify each other and the reliability of model is proved.(4)Establish reservoir model to match production history data.The results match well and verify the model can be used to do production forecast.(5)we can make preliminary judgment on the gas reservoir recovery through the analogy,the material balance method,the empirical statistics and the numerical simulation,According to the material balance method.