Wells – Processes – Producing the well
Patent
1995-06-07
1997-08-12
Dang, Hoang C.
Wells
Processes
Producing the well
166 50, 166372, E21B 4318
Patent
active
056556055
ABSTRACT:
The invention is directed at a method and apparatus for producing liquids, namely hydrocarbons, from a subterranean formation using a well having a collecting wellbore located at least partially within the formation. The apparatus is comprised of: a downward wellbore having a proximal end communicating with the surface and a distal end extending beneath the surface; a collecting wellbore for collecting liquids from the formation, located at least partially within the formation and communicating with the formation and the downward wellbore; a first downward production tubing string located inside the downward wellbore and extending from the proximal end to the distal end of the downward wellbore; a first collecting production tubing string located inside the collecting wellbore and communicating with the first downward production tubing string; and means for displacing a volume of the liquids from the collecting wellbore into the downward wellbore by applying a sufficient displacing pressure in the first downward production tubing string and the first collecting production tubing string to displace the volume of the liquids from the collecting wellbore in order that the volume of the liquids displaces the column of liquids within the downward wellbore and produces at least a portion of the column of liquids to the surface. The method for producing the hydrocarbons is performed by using the apparatus.
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Dang Hoang C.
Lambert Anthony R.
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