Method and means for introducing treatment fluid into a...

Details Method and means for introducing treatment fluid into a... Method and means for introducing treatment fluid into a...

E - Fixed Constructions

21

B

166/21

E21B 43/26 (2006.01) E21B 34/06 (2006.01) E21B 34/10 (2006.01) E21B 43/12 (2006.01) E21B 43/25 (2006.01)

Patent

CA 2031569

Method and apparatus for introducing treatment fluid into a subterranean formation by use of a reverse jet pump loca ed in a bypass of a tubing string. A plug in the tubing between the inlet and outlet of the bypass forces production fluid to flow through the bypass. When operation of the jet pump is terminated treatment fluid introduced into the tubing string causes a sleeve to slide down over the inlet and outlet, isolating the bypass. The plug is then forced out the tubing, leaving a clear path for the treatment fluid down the tubing and out the casing perforations into the formation. This arrangement enables rapid changeover from pumping formation fluid to introducing treatment fluid.

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