Method to measure injector inflow profiles
AssigneeSchlumberger Technology Corporation
InventorGeorge A. Brown
Life of this patent
Estimating the term…
Abstract
A method of determining the inflow profile of an injection wellbore, comprising stopping injection of fluid into a formation, the formation intersected by a wellbore having a section uphole of the formation and a section within the formation, monitoring temperature at least partially along the uphole section of the wellbore and at least partially along the formation section of the wellbore, injecting fluid into the formation once the temperature in the uphole section of the wellbore increases, and monitoring the movement of the increased temperature fluid as it moves from the uphole section of the wellbore along the formation section of the wellbore. The monitoring may be performed using a distributed temperature sensing system.
Claims10
A method usable with a wellbore, comprising:
- stopping injection of fluid into a formation, the formation intersected by a wellbore having an uphole section uphole of the formation and a formation section within the formation;
- observing temperature at least partially along the uphole section of the wellbore and at least partially along the formation section of the wellbore, while injection of fluid is stopped;
- re-starting injection of fluid into the formation in response to observation of a temperature peak in the uphole section of the wellbore;
- observing, while re-starting injection of fluid is occurring, the movement of the peaked temperature fluid as it moves from the uphole section of the wellbore and across the formation section of the wellbore;
- and
- determining an inflow profile of the formation based on the movement of the peaked temperature fluid that is observed while re-starting injection of fluid is occurring.
A system usable with a well, comprising:
- an injection system to inject and to stop injection of fluid into a formation, the formation intersected by a wellbore having an uphole section uphole of the formation and a formation section within the formation;
- an observation system to observe temperature at least partially along the uphole section of the wellbore and at least partially along the formation section of the wellbore,
- wherein, after injection of fluid is stopped, the injection system re-starts injection of fluid into the formation in response to an observed peak in temperature in the uphole section of the wellbore, and
- wherein, while re-starting of injection of fluid is occurring, the observation system observes movement of the peaked temperature fluid as it moves from the uphole section and across the formation section of the wellbore;
- and
- a processing system to determine an inflow profile of the formation based on the movement of the peaked temperature fluid observed while re-starting of the injection of fluid is occurring.
Dependencies are inferred from the claim text.