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1. 发明公开

EP0250162A3 Displacement of free fluid accumulations in pipelines 失效
标题翻译：管道中自由流体积累的变化
公开(公告)号：EP0250162A3
公开(公告)日：1991-02-20
申请号：EP87305168.4
申请日：1987-06-11
申请人： TEXACO LIMITED , NOWSCO WELL SERVICES (UK) LIMITED
发明人： Fuller, Joseph Dawson , Evett, Alan John
IPC分类号： F17D3/14 , E21B21/14
CPC分类号： E21B21/14 , F17D3/14
摘要： a method of removing at least a substantial proportion of fluid left in a generally horizontal section of a pipeline, by injecting into the pipeline a pressurized, high expansion foam and advancing the foam through the pipeline section in contact with a layer of the fluid left therein to displace the layer towards a remote end of the pipeline by frictional pick-up of the layer by the foam and to effect mass transfer of a foaming agent from the foam to the fluid, followed by passing into the pipeline a pressurized gas to create turbulence in fluid left in the pipeline causing foaming of the fluid and to displace a substantial proportion of the foam left within the pipeline. At least some of the bulk of the fluid in the pipeline may be displaced by injecting the foam so as to establish a transverse foam/fluid interface which is advanced through the pipeline at or above a minimum velocity required to maintain said interface leaving a residual amount of fluid which is treated as aforesaid. The method may include the further subsequent step of injecting into the pipeline a pressurized foam containing a treatment agent to displace residual foam left in the pipeline, and then allowing the foam to decompose in the pipeline to deposit the treatment agent within the pipeline either on the pipewall or in solution with any liquids remaining therein.
摘要翻译：通过向管道中注入加压的高膨胀泡沫并将泡沫通过与其中留下的流体层接触的管道部分推进，从而去除至少大部分流体留在管道的大致水平部分中的方法; 通过由泡沫层摩擦吸收层并且将发泡剂从泡沫质量传递到流体，然后通过加压气体进入管道以产生湍流来将层移向管道的远端留在管道中的流体导致流体发泡，并使流体中留下的大部分泡沫取代。管道中的大部分流体中的至少一部分可以通过注射泡沫来移动，以便建立横向泡沫/流体界面，该横向泡沫/流体界面在等于或高于维持所述界面留下剩余量所需的最小速度的液体，如前所述。该方法可以包括进一步随后的步骤，将含有处理剂的加压泡沫注入到管道中，以置换留在管道中的剩余泡沫，然后允许泡沫在管道中分解，以将处理剂沉积在管道内管道或溶液中残留有任何液体。

2. 发明公开

EP0250162A2 Displacement of free fluid accumulations in pipelines 失效
标题翻译： Rohrleitungen的Verrängungvon Ansammlungen freierFlüssigkeiten。
公开(公告)号：EP0250162A2
公开(公告)日：1987-12-23
申请号：EP87305168.4
申请日：1987-06-11
申请人： TEXACO LIMITED , NOWSCO WELL SERVICES (UK) LIMITED
发明人： Fuller, Joseph Dawson , Evett, Alan John
IPC分类号： F17D3/14 , E21B21/14
CPC分类号： E21B21/14 , F17D3/14
摘要： a method of removing at least a substantial proportion of fluid left in a generally horizontal section of a pipeline, by injecting into the pipeline a pressurized, high expansion foam and advancing the foam through the pipeline section in contact with a layer of the fluid left therein to displace the layer towards a remote end of the pipeline by frictional pick-up of the layer by the foam and to effect mass transfer of a foaming agent from the foam to the fluid, followed by passing into the pipeline a pressurized gas to create turbulence in fluid left in the pipeline causing foaming of the fluid and to displace a substantial proportion of the foam left within the pipeline. At least some of the bulk of the fluid in the pipeline may be displaced by injecting the foam so as to establish a transverse foam/fluid interface which is advanced through the pipeline at or above a minimum velocity required to maintain said interface leaving a residual amount of fluid which is treated as aforesaid. The method may include the further subsequent step of injecting into the pipeline a pressurized foam containing a treatment agent to displace residual foam left in the pipeline, and then allowing the foam to decompose in the pipeline to deposit the treatment agent within the pipeline either on the pipewall or in solution with any liquids remaining therein.
摘要翻译：通过向管道中注入加压的高膨胀泡沫并将泡沫通过与其中留下的流体层接触的管道部分推进，从而去除至少大部分流体留在管道的大致水平部分中的方法; 通过由泡沫层摩擦吸收层并且将发泡剂从泡沫质量传递到流体，然后通过加压气体进入管道以产生湍流来将层移向管道的远端留在管道中的流体导致流体发泡，并使流体中留下的大部分泡沫取代。管道中的大部分流体中的至少一部分可以通过注射泡沫来移动，以便建立横向泡沫/流体界面，该横向泡沫/流体界面在等于或高于维持所述界面留下剩余量所需的最小速度的液体，如前所述。该方法可以包括进一步随后的步骤，将含有处理剂的加压泡沫注入到管道中，以置换留在管道中的剩余泡沫，然后允许泡沫在管道中分解，以将处理剂沉积在管道内管道或溶液中残留有任何液体。

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