Well production start up method

Wells – Processes – Heating – cooling or insulating

Patent

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Details

166 59, 166 60, 166263, 166303, 166371, E21B 3600, E21B 4324

Patent

active

046659897

ABSTRACT:
A method for starting up the production of hydrocarbonaceous fluid from a wellbore which has been shut-in for a time such that the ratio of water to hydrocarbon present in the hydrocarbonaceous fluid in the wellbore is sufficiently high as to make it uneconomic to produce hydrocarbonaceous fluid from said wellbore, the improvement comprising heating the reservoir around said wellbore and the hydrocarbonaceous fluid contained therein suficiently to cause the said hydrocarbonaceous fluid to be substantially less viscous and to cause at least some thermal expansion of said hydrocarbonaceous fluid whereby the water to hydrocarbon ratio is decreased to a value at which hydrocarbonaceous fluid can be economically produced from said wellbore and thereafter starting up production of hydrocarbonaceous fluid from said wellbore.

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patent: 3439742 (1969-04-01), Durie
patent: 4300037 (1982-05-01), Richardson et al.
patent: 4466484 (1984-08-01), Kermabon
patent: 4503910 (1985-03-01), Shu

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