Method and apparatus for stimulating hydraulically pumped wells

Details Method and apparatus for stimulating hydraulically pumped wells Method and apparatus for stimulating hydraulically pumped wells

1989-01-17

1989-09-12

Novosad, Stephen J.

Wells

Processes

Placing or shifting well part

166 77, 166307, 166386, 166387, E21B 2100, E21B 1922, E21B 33127, E21B 4325

Patent

active

048651311

ABSTRACT:
A method and apparatus of stimulating a well having a hydraulic pump seated in an internal shoulder in the production tubing for pumping fluid through a fluid port to the annulus between the tubing and casing. The method includes removing the pump but leaving the production tubing in place. A coil tubing having a fluid injector is lowered into the production tubing and sealingly seated on to the shoulder. The injector is maintained on the seat and the packer is maintained in place by pressuring fluid on to the top of the seated injector and the packer. An inflatable packer may be provided on the coil tubing for anchoring the coil tubing in place.

REFERENCES:
patent: 3373816 (1968-03-01), Cochran
patent: 4440227 (1984-04-01), Holmes
patent: 4627496 (1986-12-01), Ashford et al.
patent: 4662448 (1987-05-01), Ashford et al.
patent: 4671359 (1987-06-01), Renfro
patent: 4793417 (1988-12-01), Rumbaugh

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