【摘要】 克 -依构造带高产气藏试井的流压上升现象 ,导致了克 -依构造带超高压气藏测试 (试井 )资料不能被有效解释。自喷井定产量试井流压下降与非自喷井流压上升的试井理论已较成熟 ,对于自喷井定产量试井流压上升的试井分析理论还没有人进行研究 ,文章研究了高压气井定产量试井导致流压上升的原因。根据渗流理论 ,建立了变表皮系数、高速非达西渗流、部分打开地层的数学模型 ;根据数值模拟理论 ,建立了差分方程 ;研制了数值模拟软件 ,用研制的数值模拟软件模拟了部分打开地层、高速非达西渗流、变表皮系数等因素的井底压力响应。在测试过程中地层损害程度在减轻 ,这是高压气井流压上升的主要原因 ,表皮系数降低得越多时 ,井底流压上升得越快。部分打开地层、高速非达西渗流单因素不能导致高压气井流压上升。这些认识对建立自喷井定产量试井流压上升的试井理论有重要意义。文章建立的高压气井试井流压上升的数值模拟方法可用来解释高压气井试井流压上升的资料。更多还原

【Abstract】 Since the flowing pressure of well test increa se s for the high production gas reservoir in Ke-Yi structural belt,the well test data can not be interpreted effectively for the high pressure gas reservoir.Th e well test theory of the flowing pressure decreasing for blow wells testing,an d the flowing pressure increasing for non blow wells testing is mature.But,no body is studying the theory of the flowing pressure increasing for blow wells te sting.The article investigated the reasons why the flowing pressure increases du ring the production deciding test for high pressure gas wells.Based on the pe rcolation theory,the mathematic model with variable skin factor,non Darcy perco lation caused by high velocity,and partly opened formation is developed.Accordin g to the numeral simulation theory,the difference equation is established,and th e software of the numeral simulation is developed.With the software,the bottom hole pressure response to the partly opened formation,the non Darcy percolati on caused by high velocity,and the variable skin factor is simulated.The forma tion damage level decreases during the production deciding test,which is the m ain reason why the flowing pressure increases for high pressure gas wells.The more the skin factor decreases,the faster the bottom hole flowing pressure incr eases.The partly opened formation and the non Darcy percolation caused by high velocity can’t make the flowing pressure increasing of high pressure gas wells separately.Such knowledge has important signification for the well test theory of the flowing pressure increases during the production deciding test of blow w ells.The numeral simulation for flowing pressure increasing of well test of high pressure gas wells can be used to interpret the data of the flowing pressure i ncreasing of well test of high pressure gas wells.更多还原