Model HCCV hydrostatic closed circulation valve
AssigneeBaker Hughes Incorporated
InventorsJoseph C. H. Yeo, Anthony J. Orchard, Keith E. Lewis, Christopher L. Weaver
Life of this patent
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Abstract
Devices and methods for methods for cleaning of excess cement from a production assembly as well as from the annulus surrounding the production assembly. A hydrostatic closed circulation valve (HCCV) assembly is described that is primarily actuatable between open and closed positions by varying hydraulic pressure in the flowbore of the production assembly. The valve assembly is useful for selectively circulating working fluid into the annulus from the flowbore of the production assembly.
Claims14
A method for completing a wellbore using a tubular assembly having an axial flowbore and a flow port communicating with a wellbore annulus, the flow port having at least a substantially non-circulating configuration and a substantially circulating configuration, the method comprising:
- (a) positioning the tubular assembly in the wellbore with the flow port in the substantially non-circulating configuration;
- (b) at least partially cementing the tubular assembly within the wellbore while the flow port is in the substantially non-circulating configuration;
- (c) configuring the flow port to be in the substantially circulating configuration;
- (d) circulating a working fluid through the flow port to substantially remove cement from at least a portion of the tubular assembly;
- and
- (e) configuring the flow port to be in the substantially non-circulating configuration.
A system for producing hydrocarbons from a downhole formation, the system comprising:
- a tubular at least partially cemented in a wellbore traversing the formation, the tubular having a flowbore;
- and
- a selective flow device connected to the tubular to provide a fluid path between the flowbore and an annular space surrounding the tubular, the selective flow device having:
- (i) a substantially closed position while the tubular is being at least partially cemented in the wellbore, and (ii) a substantially open position after the tubular has been at least partially cemented in the wellbore to flow a cement removing fluid into the annular space.
Dependencies are inferred from the claim text.