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US 7,350,566 B2Granted
Well completion with merged influx of well fluids
OwnerNicholas P. Valenti, Richard M. Valentiinventors
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OwnerNicholas P. Valenti, Richard M. Valentiinventors
Estimating the term…
The objective of the invention is to smoothly merge the influx flow streams with the wellbore flow stream so as to reduce the pressure drop along the perforated section of the wellbore liner. There is disclosed a completion liner for a well for the production of hydrocarbons is provided with angled ports through the sidewall which reduce pressure drop along the length of the liner. There is also disclosed short imperforate completion tubing for a well for the production of hydrocarbons is concentrically mounted alongside substantially only the perforated section of the production tubing to cause production fluids to initially flow toward the wellhead along an annulus defined between completion tubing and the production tubing prior to exiting the annulus and commingling a with fluids produced from further down hole. There is further disclosed a completion casing for a well for the production of hydrocarbons which is provided with angled perforations through the casing sidewall which reduce flow resistance along the length of the casing.
A well production tubular (2) for carrying fluids from a wellbore, said tubular having a longitudinal axis (4), a generally annular cross section across the longitudinal axis, a wellhead end (6), a well bottom end (8), and a plurality of influx ports (10) opening through a sidewall of the tubular to form a plurality of flow paths from an outer surface of the tubular to an inner surface of the tubular, said influx ports being formed through the sidewall at an obtuse angle B with respect to the longitudinal axis of the tubular in the direction of the wellhead end so that substantially all fluid flowing into the tubular exits the influx ports with a substantial axial velocity component toward the wellhead end of the tubular, wherein the sidewall has a thickness and the influx ports have a diameter which is less than about 1.5 times the thickness, said influx ports opening directly toward the longitudinal axis of the tubular.
A well production tubular (2′) having a longitudinal axis (4′), a generally annular cross section across the longitudinal axis, a wellhead end (6′), a well bottom end (8′), and a plurality of influx ports (10′) opening through the sidewall to form a plurality of flow paths from the outer surface of the tubular to the inner surface of the tubular, said influx ports being formed through the sidewall at an acute angle C with respect to a plane drawn through to the longitudinal axis of the tubular and passing through the port so that substantially all fluid flowing into the tubular exits the influx ports with a substantial rotational velocity component.
A concentric tubing and mounting system (102) for use in completing a well (104), said system comprising
A well (124) for the production of hydrocarbons, comprising
Dependencies are inferred from the claim text.