Metal matrix composites for drilling tools
AssigneeSchlumberger Technology Corporation
InventorsMingdong CAI, Huimin SONG, Youhe ZHANG, Ting REN
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Abstract
An additively manufactured metal matrix composite (MMC) includes hard particles and a binder. The hard particles are greater than 27 vol % of the MMC, and are spherically shaped. The binder includes at least nickel and silicon. The binder is less than 73 vol % of the MMC. The silicon is more than 6.0 wt % of the binder yet less than 12.5 wt % of the binder. A transverse rupture strength (TRS) of the MMC is greater than 200 ksi, and the erosion resistance factor is greater than 30.
Claims20
An additively manufactured metal matrix composite (MMC) comprising:
- hard particles comprising greater than 27 vol % of the MMC, wherein the hard particles are spherically shaped;
- and
- a binder comprising nickel and silicon, wherein the binder comprises less than 73 vol % of the MMC, wherein the silicon comprises more than 6.0 wt % of the binder and less than 12.5 wt % of the binder.
Additively manufacturing a metal matrix composite (MMC) comprising:
- printing a first layer of the MMC;
- printing a second layer of the MMC at least partially on the first layer, wherein each layer of the MMC comprises a mixture of hard particles and a binder powder, wherein the hard particles comprise between 30 vol % and 50 vol % of the MMC, the binder powder comprises nickel and silicon, the silicon comprises more than 6.0 wt % of the binder powder and less than 10.0 wt % of the binder powder.
A drilling tool comprising an additively manufactured metal matrix composite (MMC), the MMC comprising:
- hard particles comprising greater than 44 wt % of the MMC, wherein the hard particles comprise spherically shaped cast tungsten carbide particles;
- and
- a binder comprising nickel and silicon, wherein the binder comprises less than 56 wt % of the MMC, the silicon comprises more than 7.0 wt % of the binder and less than 10.0 wt % of the binder.
Dependencies are inferred from the claim text.