Wells – Processes – With indicating – testing – measuring or locating
Patent
1993-02-05
1994-08-16
Bui, Thuy M.
Wells
Processes
With indicating, testing, measuring or locating
175 48, E21B 4300
Patent
active
053378210
ABSTRACT:
A method and apparatus for measuring fluid flow rates, reservoir deliverability and/or the absolute open flow (AOF) potential of a subterranean formation penetrated by a wellbore. The present invention can be described as a formation fluid flow rate test tool which is conveyed and operated on a wireline logging cable. The down hole test tool comprises an arrangement of inflatable packers to isolate an interval and a pump which extracts fluid from the formation through an inlet below the upper most packer. The method allows for sequentially increasing or decreasing the flow rates and measuring the corresponding pressure responses. From this data, the reservoir flow characteristics, properties and deliverability can be accurately calculated, which was not previously permitted with other known wireline conveyed sampling and testing tools. Additionally, the present invention allows for the reservoir parameters to be obtained under dynamic conditions, emulating a deliverability test. This method and apparatus presents an economical and time effective technique with which to enter into a decision regarding the disposition of a wellbore.
REFERENCES:
patent: 4295366 (1981-10-01), Gibson et al.
patent: 4610161 (1986-09-01), Gehrig et al.
patent: 4716973 (1988-01-01), Cobern
patent: 4905203 (1990-02-01), Sims et al.
Aqrit Industries Ltd.
Bui Thuy M.
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