Wells – With junk retrieving means
Patent
1983-01-20
1985-05-07
Pate, III, William F.
Wells
With junk retrieving means
166170, E21B 3103, E21B 3106, E21B 3108
Patent
active
045152128
ABSTRACT:
The invention provides for an improved internal casing wiper tool 10 designed to wipe the casing sides 10 of a well bore hole 30 in order to remove debris 60 contained thereon and further to remove debris 60 contained in fluid found in the bore hole 30. The tool of the present invention includes a first chamber 210 for collecting larger sized pieces 430 of debris 60 and a second chamber 300 for collecting the smaller sized pieces 440 of debris 60 as the tool is lowered into the well bore hole 30. The tool includes an elongated pipe 100 having its upper end 310 connected to the lower end 350 of the drilling string 20 internally containing the first 210 and second 300 chambers, a plurality of centralizers 130 are disclosed around the tube 100 for substantially centering the tube 100 in the bore hole, a petal basket 110 is connected to the lower end 102 of the pipe having a plurality of outwardly extending petals 120 around its periphery for wiping the casing sides in order to dislodge the debris and to guide the fluid with the debris into the tube 100, a first filter 160 is located at a first predetermined distance 150 from the lower end 102 of the pipe 100 and separates out the larger pieces 430 of debris 60 and a second filter 230 is located above the first filter for separating out the smaller pieces 440 of debris 60, a check valve 320 is located above the second filter 230 and permits the cleaned fluid to flow outwardly from the tool 10 back into the well bore 30.
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Fishing Tools and Techniques by Petroleum Extension Service, p. 21.
Tri-State General Catalog by Tri-State Oil Tool Industries, Inc., 1980-1981, pp. 38-39.
Oilfield Services and Manufactured Products by HOMCO, 1982-1983 Catalog, pp. 8-9.
Bowen Fishing Magnets by Bowen, Sep., 1981, pp. 2-3.
Itco Type Bowen Junk Baskets by Bowen, May, 1981, pp. 2-3.
Bowen Reverse Circulation Junk Baskets, May, 1980, pp. 1-3.
Data Handbook by SERVCO Division of Smith International, Inc., pp. 2-4.
Brown Rodney F.
Hummel Jack L.
Marathon Oil Company
Pate III William F.
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