公开(公告)号：EP0577300A2

公开(公告)日：1994-01-05

申请号：EP93304792.0

申请日：1993-06-18

申请人： HALLIBURTON COMPANY

发明人： Blauch, Matthew E. ,  Venditto, James J. ,  McMechan, David E. ,  Tanaka, Gregory L.

IPC分类号： G01N15/08

CPC分类号： C09K8/58 ,  C09K8/62 ,  C09K8/703 ,  C09K8/72 ,  C09K8/82 ,  C09K8/94 ,  E21B43/006 ,  G01N15/08 ,  G01N33/241

摘要： Gas permeability of very low permeability subterranean formations, and the gas permeability reducing effects of injecting one or more treatment fluids thereinto, are measured by injecting a gas into a core sample of the formation at a selected substantially constant pressure, and continuing the injection for a long period of time to ensure steady state flow conditions. The temperature of the gas as it flows through the core sample and the flow rate of the gas exiting the core sample are measured, and the native state gas permeability of the core sample is calculated therefrom. One or more treatment fluids can be injected into the core sample after the native state permeability is determined. Thereafter, the gas permeability can again be determined and compared to the native state permeability.

摘要翻译： 通过以选定的基本上恒定的压力将气体注入到地层的岩心样品中来测量非常低渗透性地下地层的气体渗透性和注入其中的一种或多种处理流体的气体渗透性降低效果，并且继续注入 长时间保证稳态流量状况。 测量气体流过核心样品时的温度和离开核心样品的气体的流速，并计算核心样品的天然气渗透率。 在确定天然状态渗透性之后，可将一种或多种处理流体注入核心样品。 此后，可以再次确定透气度并将其与天然状态渗透率进行比较。

公开(公告)号：EP0577300A3

公开(公告)日：1994-04-06

申请号：EP93304792.0

申请日：1993-06-18

申请人： HALLIBURTON COMPANY

发明人： Blauch, Matthew E. ,  Venditto, James J. ,  McMechan, David E. ,  Tanaka, Gregory L.

IPC分类号： G01N15/08

CPC分类号： C09K8/58 ,  C09K8/62 ,  C09K8/703 ,  C09K8/72 ,  C09K8/82 ,  C09K8/94 ,  E21B43/006 ,  G01N15/08 ,  G01N33/241

摘要： Gas permeability of very low permeability subterranean formations, and the gas permeability reducing effects of injecting one or more treatment fluids thereinto, are measured by injecting a gas into a core sample of the formation at a selected substantially constant pressure, and continuing the injection for a long period of time to ensure steady state flow conditions. The temperature of the gas as it flows through the core sample and the flow rate of the gas exiting the core sample are measured, and the native state gas permeability of the core sample is calculated therefrom. One or more treatment fluids can be injected into the core sample after the native state permeability is determined. Thereafter, the gas permeability can again be determined and compared to the native state permeability.

摘要翻译： 极低渗透率地下地层的气体渗透性和将一种或多种处理流体注入其中的气体渗透性降低效果通过在选定的基本恒定压力下将气体注入地层的岩心样品中并继续注入 长时间保证稳定状态的流动状态。 测量气体流经岩芯样品时的温度和离开岩芯样品的气体的流速，并由此计算岩芯样品的天然状态气体渗透率。 在确定天然状态渗透性之后，可以将一种或多种处理流体注入岩芯样品中。 之后，可以再次确定气体渗透性并与天然状态渗透率进行比较。