Multi-function apparatus for adding a branch well sealed liner and connector to an existing cased well at low cost
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Mar 18, 2003
Grant Date -
Feb 20, 2003
app pub date -
Dec 1, 2000
filing date -
Dec 3, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A multi-function apparatus designated as a 'Liner Stub Assembly', run in and set in an existing cased well at the end of a work pipe string is used to add a liner-equipped branch well to an existing cased well in a way which provides full access to both wells. Pre-fabricated mobile straight tubular connectors (Liner Stubs) are installed and sealed by on-board explosive means which accurately cut a window of pre-determined shape and dimensions in the existing well casing and weld to it the Liner Stub's stop collar to make downhole a leak-proof tubular junction of the two wells, by means of such short connectors.
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