Downhole oilfield erosion protection by using diamond

Details Downhole oilfield erosion protection by using diamond Downhole oilfield erosion protection by using diamond

2008-03-25

2008-03-25

Bagnell, David (Department: 3676)

Wells

Conduit wall or specific conduit end structure

Corrosion prevention or deterring

C166S311000, C166S312000, C166S222000

Reexamination Certificate

active

07347259

ABSTRACT:
A device for use with components for a downhole tool—such as a throat, a nozzle, or a diffuser—used for cleaning a wellbore, are disclosed which decreases the erosion of the components. The device may be comprised of a hardened material, such as stack of pure diamond disks brazed to form an insert for a throat. The device may also be comprised of polycrystalline diamond (PCD) washers stacked together and mechanically secured within the component such as a throat. The device may also be comprised of diamond grown on a mandrel into a trumpet shape, which may then be brazed or epoxied into the component. As each of these materials is harder than materials previously utilized, erosion performance is enhanced. A method of improving erosion performance of components utilized to clean a wellbore is also disclosed.

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