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US 9,790,788 B2Granted
Apparatus and method for predicting properties of earth formations
AssigneeBaker Hughes Incorporated
InventorsDaniel Moos, Colleen Barton
Life of this patent
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Abstract
A method of predicting a property of an earth formation includes: injecting a fluid into at least one pre-existing feature of the formation at a plurality of constant pressures or flow rates; measuring a response from the at least one pre-existing feature at each of the plurality of constant pressures or flow rates; and estimating at least one property of the at least one pre-existing feature based on the response. An apparatus for predicting a property of an earth formation is also disclosed.
Claims24
A method of evaluating an earth formation, comprising:
- injecting, by an injection mechanism, a fluid into a pre-existing formation fracture at a first pressure or a first flow rate;
- measuring, by at least one sensor, a first response from the formation at the first pressure or the first flow rate;
- injecting, by the injection mechanism, a fluid into the pre-existing formation fracture at a second pressure or a second flow rate, wherein the second pressure is sufficient to induce a shear in the pre-existing formation fracture without initiating a hydraulic fracture by the fluid at the pre-existing formation fracture;
- measuring, by the at least one sensor, a second response from the formation at the second pressure or the second flow rate;
- and
- estimating, by a processor operably connected to the at least one sensor, at least one property of the formation based on the first response and the second response.
3 more elements
An apparatus for evaluating an earth formation, comprising:
- an injection mechanism configured to inject a fluid into a pre-existing formation fracture at a first pressure or a first flow rate and inject a fluid into the pre-existing formation fracture at a second pressure or a second flow rate, wherein the second pressure is sufficient to induce a shear in the pre-existing formation fracture without initiating a hydraulic fracture by the fluid at the pre-existing formation fracture;
- a pumping mechanism configured to adjust at least one of a pressure and a flow rate at which the injection mechanism injects the fluid;
- a sensor for estimating at least one of a pressure and a flow rate of the formation;
- and
- a processor configured to measure a first response from the formation to the first pressure or the first flow rate, measure a second response from the formation to the second pressure or the second flow rate, and estimate at least one property of the formation based on the first response and the second response.
2 more elements
Dependencies are inferred from the claim text.