Patent ID: 8171997
Filing Date: 2012-05-08
Classification: E21B

Abstract:
1. A method of producing a well fluid, comprising: (a) securing a motor assembly to a string of outer tubing, defining an outer string, lowering the outer string along with the motor assembly into the well, and supporting an upper end of the outer string in a wellhead at an upper end of the well; (b) securing a rotary pump assembly to a string of inner tubing, defining an inner string, lowering the inner string into the outer string, stabbing the pump assembly into cooperative engagement with the motor assembly, and supporting an upper end of the inner string in the wellhead; and (c) supplying power to the motor assembly to operate the pump assembly, causing well fluid to flow into the outer string to an intake of the pump assembly, which pumps the well fluid through the inner tubing to an upper end of the well.