Passive completion optimization with fluid loss control

摘要

Passive completion optimization with fluid loss control. A completion string includes a set of well tools interconnected as a portion of the completion string, the well tools including a well screen assembly, at least one valve which controls fluid communication between an interior and exterior of the string, and two packer assemblies, each of the packer assemblies including at least one swellable seal element, and the packer assemblies longitudinally straddling the valve and the screen assembly. Another completion string includes a set of well tools interconnected as a portion of the completion string, the well tools including two packer assemblies, a well screen assembly, and the screen assembly including an inflow control device which restricts fluid flow through the screen assembly, each of the packer assemblies including a swellable seal element, and the packer assemblies longitudinally straddling the screen assembly.

主权项

1. A well completion string, comprising:
at least one set of well tools interconnected as a portion of the completion string, the set of well tools including at least one well screen assembly, at least one valve which selectively permits and prevents fluid communication between an interior and an exterior of the completion string, and at least two packer assemblies; wherein each of the packer assemblies includes at least one swellable seal element, and an actuator which longitudinally compresses the swellable seal element while the swellable seal element is at least partially swollen, and radially outwardly extends the swellable seal element into sealing engagement with at least one of a casing and a wellbore; wherein the packer assemblies longitudinally straddle the valve and the well screen assembly in the completion string; wherein the well screen assembly includes an inflow control device which restricts fluid flow through the screen assembly; and wherein the inflow control device variably restricts the fluid flow at least in response to a proportion of water in the fluid flow.