Downhole filter
AssigneeBaker Hughes Oilfield Operations LLC
InventorsZhi Yong He, Vighnesh Sivan
Life of this patent
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Abstract
A work string including a chemical injection sub having a valve. The valve includes a housing, a bore extending along a longitudinal axis of the housing, a first port at a first axial location along the housing, a second port at a second axial location along the housing, a filter disposed within the bore, wherein the filter including an inlet at a first end and an outlet at a second end, and a floating device disposed within the filter, the floating device configured to allow a flow of fluid into the filter at the first end and to close the inlet based on an accumulation of debris within the filter.
Claims15
A valve of a chemical injection sub for use downhole, comprising:
- a housing;
- a bore extending within the housing along a longitudinal axis of the housing;
- a first port at a first axial location along the housing;
- a second port at a second axial location along the housing;
- a filter disposed in the bore, the filter having an inlet at a first end and an outlet at a second end;
- and
- a floating device disposed within the filter, the floating device configured to allow a fluid to flow into the filter at the first end and to close the inlet based on an accumulation of debris within the filter.
A work string, comprising:
- a chemical injection sub including a valve, the valve comprising:
- a housing;
- a bore extending along a longitudinal axis of the housing;
- a first port at a first axial location along the housing;
- a second port at a second axial location along the housing;
- a filter disposed within the bore, wherein the filter including an inlet at a first end and an outlet at a second end;
- and
- a floating device disposed within the filter, the floating device configured to allow a flow of fluid into the filter at the first end and to close the inlet based on an accumulation of debris within the filter.
Dependencies are inferred from the claim text.