Wells – Processes – Placing or shifting well part
Patent
1989-07-17
1990-10-16
Kisliuk, Bruce M.
Wells
Processes
Placing or shifting well part
166127, 166191, 166240, 166185, E21B 2306, E21B 33124
Patent
active
049628151
ABSTRACT:
A straddle packer apparatus includes a housing having a central opening. The housing has inflation passages, treating fluid passages, and equalizing passages defined therein. Upper and lower longitudinally spaced packers are mounted on the housing on opposite sides of an outlet of the treating fluid passage. An inner mandrel is slidably received in the central opening of the housing. The mandrel has a mandrel bore and has upper and lower inflation ports, upper and lower equalizing ports, and a treating port, all of which communicate with the mandrel bore. A lug and endless J-slot is operably associated with the housing and mandrel for controlling a telescoping position of the mandrel relative to the housing in response to telescoping reciprocation without rotation of the mandrel relative to the housing. The lug and J-slot define an endlessly repeating sequence of inflating position, treating position, equalizing position, and ready position wherein the tool is ready to return to the original inflating position on the next telescoping stroke of the mandrel within the housing.
REFERENCES:
patent: 4246964 (1981-01-01), Brandell
patent: 4296808 (1981-10-01), Baker et al.
patent: 4566535 (1986-01-01), Sanford
patent: 4567944 (1986-02-01), Zunkel et al.
patent: 4569396 (1986-02-01), Brisco
patent: 4633952 (1987-01-01), Ringgenberg
patent: 4648448 (1987-03-01), Sanford et al.
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patent: 4823882 (1989-04-01), Stokley et al.
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Exhibit A: Article from Ocean Industry, Feb., 1989, pp. 44-45, entitled "Thru-Tubing Straddle Packer Expands, Seals in Casing".
Exhibit B: Tam International 1980-1981 General Catalog, portion headed "Inflatable Perforation Wash Tool".
Exhibit C: Advertising brochure of Tam International entitled, "Tam-J.TM. Inflatable Workover/Testing Packers and Accessories Ordering Guide, Jan., 1986".
Exhibit D: Brochure of Tam International entitled "TAM-J.TM. Heavy-Duty Inflatable Packers for Well Testing, Workovers, and Production", 1986.
Exhibit E: Lynes 1978-79 Catalog, pages 18, 19, 22 and 23.
Schultz Roger L.
Tucker James C.
Beavers L. Wayne
Duzan James R.
Halliburton Company
Kisliuk Bruce M.
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