Gas breakthrough analysis
AssigneeEquinor Energy AS
InventorTao Yang
Life of this patent
Estimating the term…
Abstract
A method of identifying a location of gas breakthrough within a completed production well includes: obtaining production composition data and/or tracer data from the production well; analysing the production composition data and/or tracer data to determine whether gas breakthrough has occurred within the production well; and in response to determining that gas breakthrough has occurred within the production well, examining mud-gas data collected during drilling of the production well to identify a gas breakthrough location within the well where the gas breakthrough has occurred.
Claims10
A method of identifying a location of gas breakthrough within a completed production well, the method comprising:
- obtaining production composition data and/or tracer data from the production well;
- analysing the production composition data and/or tracer data to determine whether gas breakthrough has occurred within the production well;
- and
- in response to determining that gas breakthrough has occurred within the production well:
- examining mud-gas data collected during drilling of the production well to identify a gas breakthrough location within the well where the gas breakthrough has occurred;
- and
- performing a well intervention operation within the production well at the gas breakthrough location in order to reduce production of fluid from adjacent the gas breakthrough location,
- wherein the well intervention operation comprises sealing or bypassing one or more perforations in a casing of the production well to prevent production by the production well of fluid from adjacent the gas breakthrough location.
Dependencies are inferred from the claim text.