Patent ID: 8955599
Filing Date: 2015-02-17
Classification: E21B

Abstract:
1. A method of removing fluids from a subterranean well, comprising: inserting at least one inner tubing string through a well, wherein an outer tubing string surrounds the inner tubing string forming a first annulus therebetween and a well casing surrounds the outer tubing string forming a second annulus therebetween, the well having a distal section that extends into a fluid source within a rock formation, wherein the well comprises a proximal well section extending from a surface of the rock formation and a deviated well section extending from the proximal well section to the fluid source; injecting a first fluid into the first annulus at a proximal end of the well; rerouting the first fluid from the first annulus proximate the proximal well section into the inner tubing string using a crossover device; transporting a second fluid from the fluid source to the proximal well section using a first fluid removal means; rerouting the second fluid from the first annulus proximate the distal section into the inner tubing string using the crossover device; transporting the second fluid from the proximal well section to the proximal end of the well using a second fluid removal means; and transporting a third fluid from the fluid source to the proximal end of the well through the second annulus.