Back to results
US 2008/0186024 A1Published application
Apparatus and method for measuring cased hole fluid flow with nmr
AssigneeBaker Hughes Incorporated
InventorCarl Edwards
Life of this patent
Estimating the term…
Abstract
A method and apparatus useful to determine characteristics of fluid flow, such as fluid holdup and flow velocity. The apparatus comprises a flow tube, a permanent magnet, a first set of coils, and a second set of coils. The first set of coils creates a radio frequency magnetic field within the flow tube with a series of refocusing pulses. The second set of coils encodes velocity information onto the fluid molecules using rotating frame zeugmatography that is later decoded and used to estimate the fluid flow velocity.
Claims6
1-46. (canceled)
A method of measuring wellbore fluid within a wellbore comprising:
- encoding velocity information onto fluid particles with a radio frequency field gradient;
- and
- subsequently decoding the velocity information from the fluid particles and estimating a fluid flow rate in the wellbore based on the velocity information.
Dependencies are inferred from the claim text.