| US 7,575,058 B2 | ||
| Incremental annular choke | ||
| Juan P. Franco, Houston, Tex. (US); and Michael A Unger, Houston, Tex. (US) | ||
| Assigned to Baker Hughes Incorporated, Houston, Tex. (US) | ||
| Filed on Jul. 10, 2007, as Appl. No. 11/827,035. | ||
| Prior Publication US 2009/0014185 A1, Jan. 15, 2009 | ||
| Int. Cl. E21B 34/06 (2006.01); E21B 43/12 (2006.01) | ||
| U.S. Cl. 166—334.4 [166/332.1; 166/334.1; 166/373; 166/386; 138/43; 138/45] | 14 Claims |
| 1. A sliding sleeve valve for selectively transmitting fluid between a flowbore defined within the sleeve valve and an annulus
radially surrounding the sleeve valve, the valve comprising:
an outer housing having a housing body defining an axial flowbore therethrough, the outer housing also having an outer radial
fluid communication port disposed through the housing body;
a sliding sleeve member moveably disposed within the flowbore, the sleeve member having a sleeve body and defining an axial
flow passage therethrough, the sliding sleeve member also having an inner radial fluid communication port disposed through
the sleeve body; and
an annular flow space defined radially between the sliding sleeve member and the outer housing to govern the flow of fluid
through the valve, the annular flow space having a plurality of bore portions which are selected to provide different flow
rates between the inner and outer radial ports.
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