Filtering media for controlling the flow of sand during oil well operations
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United States of America Patent
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Apr 18, 1989
Grant Date -
N/A
app pub date -
Dec 1, 1987
filing date -
Dec 10, 1986
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Sand is filtered from an oil flow from a sand-containing oil producing formation or interval of an oil well by passing the oil flow with entrained sand through a filter assembly containing filtering media in the form of a body of juxtaposed composite particles. Each composite particle has an iron-containing core surrounded by a continuous chromium cladding, the composite particles having a size to permit passage of the oil flow through the body of the composite particles while substantially preventing flow of sand therethrough.
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