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US 12,590,538 B2Granted
Method and apparatus for stress testing of geological formations with a high permeability
AssigneeSchlumberger Technology Corporation
InventorsAdriaan Gerard Gisolf, German David Garcia, Francois-Xavier Dubost, Emilie Peyret
Life of this patent
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Abstract
Embodiments presented provide for stress testing of downhole wireline formation testing equipment. Certain embodiments provide for stress testing of geological stratum which exhibit high permeability.
Claims6
A method to perform a stress test on a geological formation, comprising:
- conveying a bottom hole assembly on a drill pipe to a testing location;
- setting at least two packers at the testing location in a wellbore;
- circulating a solids free fluid into the drill pipe;
- using the solids free fluid with one or more downhole pumps to create an injection fall off cycle;
- initiating a bypass mode when the one or more downhole pumps cannot generate a sufficient flow by initiating use of one or more surface pumps to generate a higher flowrate of the solids free fluid;
- performing an injection of the solids free fluid obtained from the drill pipe into the testing location in the geological formation;
- stopping the injection of the solids free fluid from the drill pipe, wherein the stopping the injection of the solids free fluid from the drill pipe includes closing a circulating sub;
- and
- deflating the at least two packers.
6 more elements
Dependencies are inferred from the claim text.