The design of plugging isolation process near launcher or receiver

With the rapid development of oil and gas pipelines, the plugging technology which is used to increase security of pipe repairing has been starting. This article raises a new process to plug pipeline near launcher or receiver, based on the latest development of pipeline plugging technology. This process is used to change valve or maintain pipeline near launcher or receiver, is the deep application for pipeline high-pressure intelligent isolation. The whole process can be divided into four modules which is can be design separately, then can be controlled by hydraulic system.