Patent ID: 7575058
Filing Date: 2009-08-18
Classification: E21B

Abstract:
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.