Wells – Conduit wall or specific conduit end structure – Plural – parallel – nonconcentric conduits
Patent
1996-06-28
1998-10-13
Suchfield, George A.
Wells
Conduit wall or specific conduit end structure
Plural, parallel, nonconcentric conduits
166313, E21B 1714, E21B 4312
Patent
active
058198474
ABSTRACT:
An adaptor for oil well tubings interconnects two tubings in the interior of an oil well. Two types of adapters are provided, one for use when the two tubings are not installed at the same time and the other for use when the tubings are installed simultaneously. The first type has in its interior two bores to connect to the two tubings. The top end of the first bore in threaded to permit its connection to one of the tubings. The second bore has a diameter larger than that of the first to permit the insertion into its interior of the second tubing. The second type of adapter has in its interior two threaded bores to interconnect the two tubings. In both types of oil well tubing adapters, the bottom portion of the adapter has a 180.degree. bend segment which permits communication between the two orifices, thus making intercommunication between the tubings possible. A connection in the bottom part of the adapter permits its interconnection to a tubing conducting the ascending flow of oil coming from the production region, this flow passing into the interior of the tubing adapter by way of orifices existing in the internal part of the connection. These orifices likewise prevent the passage of the mechanical interface to the bottom of the well, the occurrence of which would make it impossible to apply an intermittent production method with a mechanical interface.
REFERENCES:
patent: 649326 (1900-05-01), Losure
patent: 3086592 (1963-04-01), Hoch
patent: 3172469 (1965-03-01), Coberly
patent: 3552491 (1971-01-01), Thompson
Filho Manoel Gomes
Pinheiro Eliberto Eduardo
Petroleo Brasileiro S.A.--Petrobras
Suchfield George A.
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