不同井网密度地质储量分布特征研究

为探讨井网加密前后地质储量的变化及分布特征，本文采用三角网法计算不同井网密度条件下、不同沉积类型砂体的地质储量，确定井网加密前后不同沉积类型砂体的地质储量分布特征。随着井网的不断加密，除三角洲外前缘亚相不稳定席状砂体外，其它各类型砂体的地质储量均有增加的趋势；不同井网密度下，不同类型砂体的地质储量的变化特征，与砂体分布特征一致，分布相对稳定的砂体地质储量变化不大，分布相对不稳定的砂体地质储量变化较大。

The Distribution Characteristics of Geological Reserves in Different Well Pattern Density

In order to research the variation of geological reserves and their distribution under the condition of different well pattern infilling, based on triangular meshes method, the geological reserves of different sedimentary types were calculated and their distribution was determined. With the increase on well pattern infilling, there is a growing trend towards the geological reserves of all the sand bodies except unstable sheet sand bodies of delta outer front subfacies. Under the condition of different well pattern infilling, the variation characteristics of geological reserves of different sedimentary types are consistent with the distribution characteristics of sand bodies. In other words, geological reserves in relatively stable sand bodies change little while geological reserves in unstable sand bodies change a lot.