Method and apparatus for zone testing a well
AssigneeTech Flo Consulting, LLC
InventorsWilliam J. Jackson, Erik J. Reissig, James L. Miller, II
Life of this patent
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Abstract
A method for evaluating the potential effectiveness of refracing a previously fracked oil/gas well is accomplished by isolating a plurality of previously fracked zones of an oil/gas well in a formation and measuring the fluid flow rates from the isolated zones using a three phase flow meter positioned within the well at or near the previously fracked zones. The zones may be isolated by an isolation assembly which includes two packers connected by a perforated pipe and attached to a tubular positioned within the well.
Claims9
A method of evaluating the potential effectiveness of refracing a producing oil/gas well that has already been fracked at a plurality of zones along the length of the well comprising:
- a) isolating a first producing, previously fracked zone in the well, wherein the previously fracked zone is isolated by placing a packer within the well at the beginning and end of the zone,
- b) providing an additional draw down with a jet pump to the isolated previously fracked zone,
- c) measuring the oil, water, or gas flow rate, from the producing zone while the zone is being produced by placing a three phase flow meter in tubing located within the well, the tubing including a perforated pipe positioned between the packers,
- d) calculating a production index for the isolated previously fracked zone, and
- e) determining whether the previously fracked zones is likely to exhibit increased productivity due to a refracing procedure based upon the production index.
A method of evaluating zones in a producing oil/gas well comprising:
- a) isolating a first producing zone in the well, wherein the previously fracked zone is isolated by placing a packer within the well at the beginning and end of the zone,
- b) providing an additional draw down with a jet pump to the zone,
- c) measuring the oil, water, or gas flow rate, from the producing zone while the zone is being produced by placing a three phase flow meter in tubing located within the well, the tubing including a perforated pipe positioned between the packers,
- d) calculating a production index for the zone, and
- e) determining whether the isolated producing zone (i) is producing at an adequate level, (ii) would be likely to increase production by fracking or refracing, or (iii) should be squeezed.
Dependencies are inferred from the claim text.