System and methods for removing fluids from a subterranean well

摘要

Systems and methods for removing fluids from a subterranean well. An example embodiment includes a system having a well casing surrounding at least one inner tubing string, where the inner tubing string has a distal section and a proximal section, an apparatus for removing a first fluid within the distal section of the inner tubing string, and an apparatus for removing a second fluid within the proximal section of the inner tubing string.

主权项

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.