In order to enhance the technical capabilities of special operations such as open-hole layered testing for production,layered acidification,and layered injection/water plugging,it is necessary to introduce new process technologies for cross sealing of open-hole well sections.This article mainly takes the open-hole sealing operation before DST testing in a certain exploration well in Weizhou as an example,using tools such as open-hole expansion packers for layered isolation,meeting the requirements of DST layered testing operation,expanding the technical means of open-hole well operation,and providing reference and reference for cross type sealing of similar open-hole loss and leakage layers in the future.
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