Degradable anchor device with inserts

Abstract

In one aspect, an anchoring device is disclosed, including: a degradable substrate with a first hardness; and a plurality of gripping inserts associated with the outer extent of the degradable substrate, wherein the plurality of gripping inserts have a second hardness greater than the first hardness. In another aspect, a method to anchor a downhole device is disclosed, including: providing a degradable substrate with a first hardness; and inserting a plurality of gripping inserts to the outer extent of the degradable substrate, wherein the plurality of gripping inserts have a second hardness greater than the first hardness.

1 . An anchoring device, comprising:
 a degradable substrate with a first hardness; and   a plurality of gripping inserts associated with the outer extent of the degradable substrate, wherein the plurality of gripping inserts have a second hardness greater than the first hardness.   
     
     
         2 . The anchoring device of  claim 1 , wherein the plurality of gripping inserts are degradable. 
     
     
         3 . The anchoring device of  claim 1 , wherein the degradable substrate comprises at least one of: a magnesium alloy, a magnesium silicon alloy, a magnesium aluminum alloy, a magnesium zinc alloy, a magnesium manganese alloy, a magnesium aluminum zinc alloy, a magnesium aluminum manganese alloy, a magnesium zinc zirconium alloy, and a magnesium rare earth element alloy. 
     
     
         4 . The anchoring device of  claim 1 , wherein the plurality of gripping inserts comprises at least one of: an oxide, a carbide, a nitride, a magnesium alloy, an aluminum alloy, a zinc alloy, and a manganese alloy. 
     
     
         5 . The anchoring device of  claim 1 , wherein the plurality of gripping inserts are smaller than an intended flow path. 
     
     
         6 . The anchoring device of  claim 1 , further comprising a plurality of receptacles associated with the plurality of gripping inserts to transmit an insert pressure, wherein the insert pressure less than a contact pressure. 
     
     
         7 . The anchoring device of  claim 1 , wherein the plurality of gripping inserts are ordered. 
     
     
         8 . The anchoring device of  claim 1 , wherein the degradable substrate includes at least one crack initiation point. 
     
     
         9 . The anchoring device of  claim 1 , further comprising a binder associated with the plurality of gripping inserts and the degradable substrate. 
     
     
         10 . The anchoring device of  claim 9 , wherein the binder is degradable. 
     
     
         11 . The anchoring device of  claim 1 , wherein the plurality of gripping inserts comprise at least one of cubic gripping inserts and polygonal gripping inserts. 
     
     
         12 . A method to anchor a downhole device, comprising:
 providing a degradable substrate with a first hardness; and   inserting a plurality of gripping inserts to the outer extent of the degradable substrate, wherein the plurality of gripping inserts have a second hardness greater than the first hardness.   
     
     
         13 . The method of  claim 12 , wherein the plurality of gripping inserts are degradable. 
     
     
         14 . The method of  claim 12 , wherein the degradable substrate comprises at least one of: a magnesium alloy, a magnesium silicon alloy, a magnesium aluminum alloy, a magnesium zinc alloy, a magnesium manganese alloy, a magnesium aluminum zinc alloy, a magnesium aluminum manganese alloy, a magnesium zinc zirconium alloy, and a magnesium rare earth element alloy. 
     
     
         15 . The method of  claim 12 , wherein the plurality of gripping inserts comprises at least one of: an oxide, a carbide, a nitride, a magnesium alloy, an aluminum alloy, a zinc alloy, and a manganese alloy. 
     
     
         16 . The method of  claim 12 , wherein the plurality of gripping inserts are smaller than an intended flow path. 
     
     
         17 . A downhole system, comprising:
 a casing string; and   an anchoring device associated with the casing string, comprising:   a degradable substrate with a first hardness; and   a plurality of gripping inserts associated with the outer extent of the degradable substrate, wherein the plurality of gripping inserts have a second hardness greater than the first hardness and the second hardness is greater than a hardness of an inner diameter of the casing string.   
     
     
         18 . The system of  claim 17 , wherein the plurality of gripping inserts are degradable. 
     
     
         19 . The system of  claim 17 , wherein the anchoring device is associated with a packer or a bridge plug. 
     
     
         20 . The system of  claim 17 , wherein the anchoring device is associated with a wedge.