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CN1451841A 一种对聚合物驱生产井分步射孔与补孔时机的选择方法 无效 - 驳回

一种对聚合物驱生产井分步射孔与补孔时机的选择方法
摘要：
一种对聚合物驱生产井分步射孔与补孔时机的选择方法，提出了：1、注入井不适合采取分步射孔措施，对已采取分步射孔措施的注入井，应在注聚合物前补孔；2、在生产井一次射开有效厚度大于60％以上的情况下，补孔时机可推迟甚至可不补孔；3、无论哪种类型油层，在生产井一次射开有效厚度小于50％的情况下，补孔时机越早越好。对于纵向非均质变异系数(Vk)为0.6左右的油层，补孔时机最晚不超过注聚合物两年内；对于纵向非均质变异系数(Vk)为0.8左右的油层，应在注聚合物一年内实施完补孔；4、当同井组内有多口生产井分步射孔时，将导致开采时间成倍延长，应尽早采取补孔措施。
摘要（英）：

A method for choosing the time when the step perforation and hole mending are implemented for the productive well with polymer to displace oil is disclosed. For the injection well, step perforation is improper and if the step perforation has been taken, the hole should be mended before the polymer is injected. If the effective thickness jetted open once for the productive well is great than 60% or more, mending the hole is unnecessary, or less than 50%, the hole is mended as earlier as possible. If more wells in a group of wells are step perforated, the holes are mended as earlier as possible.

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