Wells – Processes – Placing or shifting well part
Patent
1981-11-17
1984-04-10
Purser, Ernest R.
Wells
Processes
Placing or shifting well part
166254, 166188, 166122, 166 66, 166 77, 138 89, 138 93, E21B 33128, E21B 4300
Patent
active
044415613
ABSTRACT:
A method and apparatus for locating, isolating and treating a section of a formation located downhole in a well bore by analyzing the formation for location of the section to be treated and isolating the section to be treated, and subjecting the isolated section with treating fluid with a single-type or straddle-type expandable packer assembly. The treating fluid is fed downhole to the packer assembly through a flexible conduit which is paid-off from a reel located above ground from a mobile unit. The radially expandable packer elements of the straddle packer assembly are independently expanded and contracted with the application of positive expanding and contracting forces applied thereto through remotely located controls above ground. The packer assembly may also include a formation sensing unit for sensing downhole fluid-bearing strata while the packer assembly is being lowered. The formation sensor is monitored at a remote location above ground for properly positioning the packer assembly downhole at desired fluid-bearing strata locations for treatment.
REFERENCES:
patent: 2715444 (1955-08-01), Fewel
patent: 2799351 (1957-07-01), Osmun
patent: 3145771 (1964-08-01), Pennebaker, Jr.
patent: 3165918 (1965-01-01), Loomis
patent: 3392785 (1968-07-01), King
patent: 3587736 (1971-06-01), Brown
patent: 3918520 (1975-11-01), Hutchison
patent: 3920076 (1975-11-01), Laky
Bui Thuy M.
Purser Ernest R.
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