作者: Dennis A. Wichkoski , Raphael J. Silberman , Everett H. Smith , Frederick T. Tilton
DOI:
关键词: Wellbore 、 Safety valve 、 Structural engineering 、 C++ string handling 、 Casing 、 Production tubing 、 Engineering 、 Tubing hanger
摘要: An apparatus is provided for producing a well from at least one productive zone penetrated by the bore in which casing set below top of well. Tubing hanger means support production tubing string extending downwardly and communicating with zone. Anchor on are actuatable into anchoring engagement casing. The receives upper section typically carrying safety valve thereon to sealingly engageable before, during after casing, whereby respectively communicable when set. A latch carried between sections initial securement each sections, sum strength lower sections. Anchoring sealing therein may be effected trip down well, without requirement retrieval work or other used hanger, subsequent re-entry means.