IT1199629B - Perforated well liner placement in pressure well
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Perforated well liner placement in pressure well
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Publication number
IT1199629B
IT1199629BIT19075/85AIT1907585AIT1199629BIT 1199629 BIT1199629 BIT 1199629BIT 19075/85 AIT19075/85 AIT 19075/85AIT 1907585 AIT1907585 AIT 1907585AIT 1199629 BIT1199629 BIT 1199629B
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Application filed by Union Oil CofiledCriticalUnion Oil Co
Priority to IT19075/85ApriorityCriticalpatent/IT1199629B/en
Publication of IT8519075A0publicationCriticalpatent/IT8519075A0/en
Application grantedgrantedCritical
Publication of IT1199629BpublicationCriticalpatent/IT1199629B/en
Pressurised well liner consists of a closed tube perforated over the length required to match the pressure zone in a well, the perforations being closed by hollow plugs having external flanges and projecting into the tube from outside. The liner is run into the well through a pressure sealing device at the wellhead, such as a stripper rubber or rotating head. When the liner has been properly positioned in the well, a cutting or scraping tool is run down the inside of the liner to remove the closed end of each plug projecting into the liner.
IT19075/85A1985-01-111985-01-11Perforated well liner placement in pressure well
IT1199629B
(en)
Method for producing a pipelike underground cavity, e.g. a tunnel, gallery or the like, by means of shield driving, and device for carrying out the method