Downhole cleaning tools and methods for operating the same
AssigneeSaudi Arabian Oil Company
InventorsAli M. Assiri, Bandar S. Al-Malki, Ghassan A. Essa, Oscar David Bautista Sayago
Life of this patent
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Abstract
A downhole tool assembly includes a housing, the housing defining one or more formation jetting ports structurally configured to pass fluid outward from the downhole tool assembly, a downhole motor positioned at least partially within the housing, a centrifugal pump coupled to the downhole motor, the centrifugal pump including a shaft coupled to the downhole motor, and one or more blades extending outward from the shaft, and a filtration element in communication with the centrifugal pump, where the filtration element is structurally configured to separate particulate matter from fluid passing through the filtration element.
Claims20
A downhole tool assembly comprising:
- a housing, the housing defining one or more formation jetting ports structurally configured to pass fluid outward from the downhole tool assembly;
- a downhole motor positioned at least partially within the housing;
- a centrifugal pump coupled to the downhole motor, the centrifugal pump comprising:
- a shaft coupled to the downhole motor;
- and
- one or more blades extending outward from the shaft;
- and
- a filtration element in communication with the centrifugal pump, wherein the filtration element is structurally configured to separate particulate matter from fluid passing through the filtration element.
A downhole tool assembly comprising:
- a housing comprising:
- an inner sidewall defining an inner cavity;
- and
- an outer sidewall positioned outward of the inner sidewall wherein the inner sidewall and the outer sidewall define a fluid channel positioned between the inner sidewall and the outer sidewall;
- a downhole motor positioned at least partially within the inner cavity of the inner sidewall;
- and
- a centrifugal pump coupled to the downhole motor.
A method for cleaning a wellbore, the method comprising:
- drawing a fluid into a housing of a downhole tool assembly, the housing defining an inner cavity;
- passing the fluid to a centrifugal pump, the centrifugal pump comprising a shaft and one or more blades extending outward from the shaft;
- rotating the shaft and the one or more blades of the centrifugal pump, thereby drawing the fluid through the centrifugal pump;
- and
- passing the fluid from the centrifugal pump out a formation jetting port of the housing.
Dependencies are inferred from the claim text.