中文摘要：

基于特低渗透油藏渗流新模型建立了考虑动边界影响的试井解释模型,并用数值方法求解,分析了压力降落和压力恢复试井曲线.研究表明：新模型的压力和压力导数曲线上翘,上翘幅度比拟启动压力梯度模型小.考虑动边界影响的试井曲线上翘幅度比不考虑时要小.c1D和c2D是决定曲线形态的特征参数.当c1D与c2D和不为常数时,随着c1D或c2D增大,上翘幅度增大;当c1D与c2D和为常数时,随着c1D增大,c2D减小,上翘幅度增大.压力降落和压力恢复试井曲线存在较大区别,应分别建立解释图版.

英文摘要：

Based on a new mathematical model for ultra-low permeability reservoir, well testing model considering moving boundary was established and solved by finite different method, drawdown and buildup type curve was analyzed. The results show that pressure and pressure derivative curves for both the new model and pseudo pressure gradient model become upwarp during radial period in contrast with Darcy model. Compared with pseudo pressure gradient model, the upwarp extent for the new model is gentle. The upwarp extent increases with the increase of c1D or c2D when the sum of c1D and c2D is not constant. While the upward degree increases with the increase of c1D and the decease of c2D when the sum of c1D and c2D is constant. There is a big difference between pressure drawdown and buildup curves. Typical curve should be established individually for well test interpretation.