Wells – Processes – Placing or shifting well part
Patent
1982-06-17
1984-04-17
Purser, Ernest R.
Wells
Processes
Placing or shifting well part
166 65R, 204196, 2541343FT, E21B 1908
Patent
active
044429037
ABSTRACT:
A method and apparatus for installing continuous anodes in deep bore holes in order to cathodically protect underground metal structures situated adjacent said bore holes. The system is readily adapted to be used with either replaceable or non-replaceable deep anode assemblies. A continuous anode and at least one associated flexible continuous coiled component are wound around reel means which are mounted adjacent the mouth of the bore hole. Attached to the free end of the component and the anode is a weighted base member which when located in the bore hole pulls the continuous anode and the other continuous component to the bottom of the bore hole. Lowering means are provided to insure that the weight means descend to the bottom of the bore hole at a controlled rate of speed. The lowering means includes a rope which is attached at one end to the weight means and at its other end is wound about a spool and a cylindrical member in a manner whereby the frictional engagement between the rope and the cylindrical member controls the rate with which the rope unreels and the rate with which weight means is able to descend toward the bottom of the bore hole. The system is contained in a housing which serves as means for transporting as well as supporting the system. The housing is constructed as a crate member having a door. The weight means is dropped through the door when open and into the bore hole for installation therein.
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patent: 2326556 (1943-08-01), Opsal
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patent: 4251343 (1981-02-01), Peterson et al.
patent: 4307783 (1981-12-01), Lanmon
Booth Stephen R.
Schutt William R.
Bui Thuy M.
Purser Ernest R.
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