Mono-trip cement thru completion
AssigneeBaker Hughes Incorporated
InventorsKeith E. Lewis, Anthony James Orchard, Joseph C. H. Yeo, Jim H. Kritzler, Walter R. Chapman, James H. Holt
Life of this patent
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Abstract
In systems and methods for production of hydrocarbons fluids from a formation surrounding a wellbore, a production assembly is cemented into place, and excess cement is then cleaned from the production tubing and liner. Thereafter, hydrocarbon fluids are produced and artificial gas lift assistance is provided. All of this may be accomplished in a single trip (mono-trip) of the production tubing.
Claims27
A completion system for production of hydrocarbons from a formation surrounding a wellbore, the completion system comprising:
- a completion assembly for disposal into an annulus of a wellbore, the completion assembly defining a flowbore therewithin for flowing of fluid;
- a valve assembly incorporated within the completion assembly having a flow port that may be moved between a substantially opened position and a substantially closed position to selectively provide fluid communication between the flowbore and the annulus;
- a mandrel incorporated within the completion assembly and containing a cylinder for selective placement of a valve;
- and
- a valve shaped and sized to reside within the cylinder of the mandrel.
A completion system for production of hydrocarbons from a formation surrounding a wellbore, the completion system comprising:
- a completion assembly for disposal into an annulus of a wellbore, the completion assembly defining a flowbore therewith in for flowing of cement downwardly therethrough and hydrocarbons upwardly therethrough;
- a device for cleaning excess cement from the completion assembly;
- and
- a gas lift valve that can be operably associated with the completion system after flowing of cement through the flowbore to selectively permit gas in the annulus to flow into the flowbore.
A method of completing a subterranean well for gas lifted fluid extraction comprising the steps of:
- a. positioning within a well bore a production tubing string having at least one mandrel assembled within said tubing string;
- b. displacing cement through a flow bore of said tubing string into a wellbore annulus around a portion of said tubing string below said mandrel;
- and
- c. creating openings in said tubing portion and surrounding cement to admit formation fluid flow into said flow bore;
- and
- d. admitting gas from a wellbore annulus into the flowbore via the at least one mandrel.
A method for production of hydrocarbons from a formation proximate a wellbore comprising the steps of:
- disposing a completion assembly into a wellbore, said completion assembly having a flowbore defined therewithin;
- pumping cement through the flowbore of the completion assembly to fill a portion of an annulus surrounding the completion assembly;
- closing a lower end of the flowbore against fluid flow;
- cleaning excess cement from the completion assembly;
- opening a portion of the completion assembly so that hydrocarbon fluids from the formation may enter the flowbore;
- and
- assisting production of said hydrocarbon fluids from said flowbore using an artificial lift pump that flows gas into the annulus.
Dependencies are inferred from the claim text.