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US 10,865,627 B2Granted
Shrouded electrical submersible pump
AssigneeSaudi Arabian Oil Company
InventorAbdullah M. Al-Zahrani
Life of this patent
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Abstract
A system for producing hydrocarbons from a subterranean well includes an electrical submersible pump assembly with a motor, a seal section, and a pump. A packer assembly with a mechanical valve is retrievable with the electrical submersible pump assembly and is a primary high pressure mechanical barrier. A shroud fully encapsulates the electrical submersible pump assembly. An annular seal assembly seals around an outer diameter of the shroud, the shroud and the annular seal assembly together being a secondary high pressure mechanical barrier.
Claims16
A system for producing hydrocarbons from a subterranean well, the system including:
- an electrical submersible pump assembly with a motor, a seal section, and a pump;
- a packer assembly with a mechanical valve, the packer assembly having a packer sealing with an inner diameter surface of a well tubing and being a primary high pressure mechanical barrier, and further where the mechanical valve sealingly engages the inner diameter surface of the well tubing;
- a shroud fully encapsulating the electrical submersible pump assembly, the shroud assembly operable to dissolve a gas component within a liquid component of the hydrocarbons to form a production fluid;
- an annular seal assembly sealing around an outer diameter of the shroud, the shroud and the annular seal assembly together being a secondary high pressure mechanical barrier;
- and
- coiled tubing connected to the electrical submersible pump assembly and the shroud, the coiled tubing supporting the electrical submersible pump assembly and the shroud and being operable to riglessly install and remove the electrical submersible pump assembly and the shroud, and further being operable to deliver the production fluid to the wellhead assembly where the production fluid is all of the hydrocarbons that are delivered to the wellhead assembly;
- where
- a discharge of the electrical submersible pump assembly is directed into the coiled tubing, the coiled tubing providing fluid communication between the electrical submersible pump assembly and a wellhead assembly for the production fluid.
5 more elements
A system for producing hydrocarbons from a subterranean well, the system including:
- a well tubing extending into the subterranean well;
- an electrical submersible pump assembly with a motor, a seal section, and a pump located within the well tubing;
- a packer assembly with a mechanical valve, the packer assembly having a packer sealing with an inner diameter surface of the well tubing and being a primary high pressure mechanical barrier, and further where the mechanical valve sealingly engages the inner diameter surface of the well tubing;
- a shroud fully encapsulating the electrical submersible pump assembly, the shroud assembly operable to dissolve a gas component within a liquid component of the hydrocarbons to form a production fluid;
- an annular seal assembly sealing between an outer diameter of the shroud and the inner diameter surface of the well tubing, the shroud and annular seal together being a secondary high pressure mechanical barrier;
- and
- coiled tubing connected to the electrical submersible pump assembly and the shroud, the coiled tubing supporting the electrical submersible pump assembly and the shroud and being operable to riglessly install and remove the electrical submersible pump assembly and the shroud, and further being operable to deliver the production fluid to the wellhead assembly where the production fluid is all of the hydrocarbons that are delivered to the wellhead assembly;
- where
- a discharge of the electrical submersible pump assembly is directed into the coiled tubing, the coiled tubing providing fluid communication between the electrical submersible pump assembly and a wellhead assembly for the production fluid.
6 more elements
A method for producing hydrocarbons from a subterranean well with an electrical submersible pump assembly, the method including:
- providing the electrical submersible pump assembly with a motor, a seal section, and a pump;
- fully encapsulating the electrical submersible pump assembly with a shroud;
- installing a packer assembly with a mechanical valve within the subterranean well, the packer assembly having a packer sealing with an inner diameter surface of a well tubing and being a primary high pressure mechanical barrier, and further where the mechanical valve sealingly engages the inner diameter surface of the well tubing;
- providing an annular seal assembly sealing around an outer diameter of the shroud, the shroud and annular seal together being a secondary high pressure mechanical barrier;
- riglessly installing the electrical submersible pump assembly and the shroud with a coiled tubing into the subterranean well, the coiled tubing supporting the electrical submersible pump assembly and the shroud within the subterranean well and being operable to riglessly remove the electrical submersible pump assembly and the shroud from the subterranean well;
- and
- dissolving a gas component within a liquid component of the hydrocarbons to form a production fluid within the shroud;
- discharging the production fluid with the electrical submersible pump assembly into the coiled tubing, the coiled tubing providing fluid communication between the electrical submersible pump assembly and a wellhead assembly, the coiled tubing delivering the production fluid to the wellhead assembly, where the production fluid is all of the hydrocarbons that are delivered to the wellhead assembly from the electrical submersible pump.
5 more elements
Dependencies are inferred from the claim text.