Fracturing/gravel packing tool system with dual flow capabilities

摘要

A fracturing/gravel packing tool system with dual flow capabilities. A method of treating a well includes the steps of: flowing a fluid into the well through a work string while simultaneously flowing another fluid into the well through an annulus; and directing each of the fluids to the exterior of a well screen in the well. A well treatment system includes a slurry and a fluid flowed into a well. The slurry has an initial density, but the fluid is mixed with the slurry in the well, thereby causing the slurry to have a reduced density in the well. Another method of treating a well includes the steps of: installing a gravel packing assembly including a well screen in the well; flowing a slurry and a fluid into the well; mixing the slurry with the fluid, thereby reducing a density of the slurry in the well; and flowing the reduced density slurry about an exterior of the well screen.

主权项

1. A method of treating a well, comprising:
introducing a first fluid at a first flow rate into the well at a surface of the earth through a work string while simultaneously introducing a second fluid at a second flow rate into the well at the surface through an annulus formed between the work string and a wellbore, wherein the second fluid is different from the first fluid; directing each of the first and second fluids to an exterior of a well screen in the well; mixing the first and second fluids in the annulus between the work string and the wellbore at the exterior of the well screen, thereby forming a mixture of the first and second fluids; and then flowing the mixture of the first and second fluids into an earth formation external to the annulus at a third flow rate which is a combination of the first and second flow rates, wherein the third flow rate is at a sufficient pressure to initiate fractures in the earth formation.