Dual packer apparatus and method

Details Dual packer apparatus and method Dual packer apparatus and method

1982-09-20

1986-01-28

Leppink, James A.

Wells

Combined

166143, 166152, 166191, 166250, E21B 2306, E21B 33124, E21B 4300

Patent

active

045665354

ABSTRACT:
A dual packer apparatus comprises a tubular outer assembly including upper and lower packers interconnected and spaced apart by tubular spacers. Ports in the outer assembly provide for communication with a well zone between the two packers and a well zone below the lower packer. A tubular inner assembly may be separately assembled and inserted into the outer assembly as assembled. The apparatus may be alternately placed in a number of different operating positions downhole by manipulation of an operating string attached to the inner assembly. Various design features provide special protection for annular seals between the two assemblies. An improved sensor and method of installing the sensor in the inner assembly are also provided.

REFERENCES:
patent: 2280785 (1942-04-01), Boynton
patent: 2618340 (1952-11-01), Lynd
patent: 2831541 (1958-04-01), Conover
patent: 2978046 (1961-04-01), True
patent: 3111169 (1963-11-01), Hyde
patent: 3182726 (1965-05-01), Store, Jr.
patent: 3327781 (1967-06-01), Nutter
patent: 4230180 (1980-10-01), Patton

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