Study on reasonable well spacing of Block Shan 66 in lower Paleozoic gas reservoir,Jingbian

Under the condition of current market economy,gas reservoir development was focused on the economic benefit.The key point to develop efficiently anisotropic low permeability gas reservoir was to select the optimal and reasonable well pattern.The paper took Block Shan 66 in lower Paleozoic gas reservoir in Jingbian for example,based on analyzing comprehensively each factor such as single-well economic limit initial production,single-well controlled economic limit OOIP,economic limit well spacing,reasonable well spacing density and gas recovery rate to affect reasonable well pattern of Block Shan 66,non-uniform area well pattern that was denser in structural axis while sparser in structural alar was concluded.By combining with economic evaluation,reasonable well pattern density,well spacing and gas recovery rate in high and low abundance areas were concluded,which can provide scientific basis for reasonable and efficient development of gas reservoir.