Patent ID: 8739865
Filing Date: 2014-06-03
Classification: E21B

Abstract:
1. An end ring for a swell packer for use in a wellbore, wherein the swell packer has a central metal tubular with a rubber exterior tubular disposed over the central metal tubular, and wherein the rubber exterior tubular swells in the presence of a well completion fluid, and wherein the end ring sealingly engages one end of the rubber exterior tubular of the swell packer, and wherein the end ring comprises: a. a first metal ring portion having a first outer diameter; b. a second metal ring portion integral with the first metal ring portion, wherein the second metal ring portion has a second outer diameter, wherein the second outer diameter is larger than the first outer diameter; c. a plurality of flutes formed between the first metal ring portion and the second metal ring portion and an integral shoulder solidly connecting the first metal ring portion to the second metal ring portion, wherein each flute is formed on the end ring longitudinal to a longitudinal axis of the wellbore, and wherein each flute extends from the first metal ring portion through the integral shoulder to the second metal ring portion on external sides of the integral shoulder and the first and second metal ring portions, wherein the plurality of flutes do not extend completely radially through the end ring; d. a plurality of screw holes disposed through each metal ring portion; and e. a plurality of screws, wherein each screw is for engaging the screw holes to connect the first or second metal ring portions to the rubber exterior tubular of the swell packer and pressure sealing the swell packer and preventing the rubber exterior tubular of the swell packer from expanding laterally and controlling the rubber exterior tubular to only expand in a direction perpendicular to the longitudinal axis of the wellbore while providing a high pressure seal with the swell packer with the first and second metal ring portions.