Patent ID: 9605517
Date: 2017-03-28
CPC Classifications: E21B

Claim:
1. A method of injecting a fluid into a subsurface formation, the subsurface formation having at least two subsurface intervals, and the method comprising: running a string of injection tubing into a wellbore, the wellbore being lined with a string of casing that substantially traverses each of the at least two subsurface intervals, with the casing being perforated along each of the at least two intervals and an annulus being formed between the tubing and the surrounding perforated casing; setting a bypass packer along the string of tubing intermediate the at least two subsurface intervals, the bypass packer having a defined flow-through area that is sized to impart a defined incremental pressure drop so as to optimize fluid injection into the at least two subsurface intervals; setting a sealing packer within the annulus above or proximate a top of an upper-most of the at least two subsurface intervals to seal the annulus; and injecting fluids down the string of injection tubing, back up the annulus, through the channels in the bypass packer, and into each of the at least two subsurface intervals.