Method and apparatus for injecting fluid into a well

Details Method and apparatus for injecting fluid into a well Method and apparatus for injecting fluid into a well

E - Fixed Constructions

21

B

166/31

E21B 33/129 (2006.01) E21B 43/28 (2006.01)

Patent

CA 1174589

Abstract An injection assembly includes a packer set in the casing adjacent to the producing zone, having a bore sized to receive production tubing. A portion of the assembly suspended from the string of production tubing includes a side pocket mandrel, a twin flow head, an extensible telescoping housing, and coacting joint means on the extensible housing and the packer for axial joining of these members. The side pocket mandrel, twin flow head, and twin flow converter provide a first passage joined to the production tubing; and a length of inner tubing joined to the twin flow converter extends this passage down into the bore of the packer. These members provide a second passage beginning at the side pocket mandrel and open- ing to the annulus between the casing and the string of produc- tion tubing, and extending downward to the packer through the annulus between the inner tubing and the surrounding structure, which surrounding structure includes the outer housing of the twin flow converter, the extensible housing, the joint, and the packer mandrel. After joining to the packer the upper por- tion of the assembly is raised to extend the extensible housing and to raise the lower end of the inner tubing from its lower limiting position within the packer. An injection method, which may be practiced with the above described assembly, is also des- cribed.

393715

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