Novel formulation for lubrication of hyper compressors providing improved pumpability under high-pressure conditions

Abstract

The present disclosure provides a lubricating composition with improved high-pressure pumpability and/or reduced viscosity at high pressures, as well as method of making and using the same. The lubricating composition includes a white oil and a polymeric thickener present in an amount equal to or less than about 40 wt % of the lubricating composition. The white oil has a kinematic viscosity of at least one of: about 80 mm 2 /sec to about 120 mm 2 /sec at 40° C. and/or about 9.5 mm 2 /sec to about 14 mm 2 /sec at 100° C.

1 . A lubricating composition comprising:
 a white oil with a kinematic viscosity of at least one of:
 about 80 mm 2 /sec to about 120 mm 2 /sec at 40° C.; 
 about 9.5 mm 2 /sec to about 14 mm 2 /sec at 100° C.; or 
 a combination thereof; and 
   a polymeric thickener present in an amount equal to or less than about 40 wt % of the lubricating composition.   
     
     
         2 . The lubricating composition of  claim 1 , wherein the lubricating composition has a kinematic viscosity of about 200 mm 2 /sec to about 240 mm 2 /sec. 
     
     
         3 . The lubricating composition of  claim 1 , wherein the white oil is present in an amount of about 50 wt % to about 95 wt % of the lubricating composition. 
     
     
         4 . The lubricating composition of  claim 1 , wherein the polymeric thickener is at least one of polybutene polymeric thickener, high molecular weight hydrocarbons, polyesters, polymers of methacrylate, copolymers of methacrylate, butadiene, olefins, alkylated styrenes, or combinations thereof. 
     
     
         5 . The lubricating composition of  claim 1 , further comprising at least one performance additive. 
     
     
         6 . The lubricating composition of  claim 5 , wherein the at least one performance additive is at least one of a dispersant, an additional detergent, a corrosion inhibitor, a rust inhibitor, a metal deactivator, an additional anti-wear agent, an extreme pressure additive, an anti-seizure agent, a wax modifier, a viscosity index improver, a viscosity improver/modifier, a fluid-loss additive, a seal compatibility agent, a pour point depressant, an additional friction modifier, a lubricity agent, an anti-staining agent, a chromophoric agent, a demulsifier, an emulsifier, a densifier, a wetting agent, a gelling agent, a tackiness agent, a colorant, an antioxidants, an oxidation inhibitor, or a combination thereof. 
     
     
         7 . The lubricating composition of  claim 5 , wherein a total amount of performance additives is equal to or less than 10 wt % of the lubricating composition. 
     
     
         8 . A method of making a lubricating composition with at least one of improved high-pressure pumpability, reduced viscosity at high pressures, or a combination thereof and, the method comprising mixing:
 a white oil with a kinematic viscosity of at least one of:
 about 80 mm 2 /sec to about 120 mm 2 /sec at 40° C.; 
 about 9.5 mm 2 /sec to about 14 mm 2 /sec at 100° C.; or 
 a combination thereof; and 
 a polymeric thickener present in an amount equal to or less than about 40 wt % of the lubricating composition. 
   
     
     
         9 . The method of  claim 8 , wherein the lubricating composition has a kinematic viscosity of about 200 mm 2 /sec to about 240 mm 2 /sec. 
     
     
         10 . The method of  claim 8 , wherein the white oil is present in an amount of about 50 wt % to about 95 wt % of the lubricating composition. 
     
     
         11 . The method of  claim 8 , further comprising mixing the white oil and the polymeric thickener with at least one performance additive. 
     
     
         12 . The method of  claim 11 , wherein the performance additive is at least one of a dispersant, an additional detergent, a corrosion inhibitor, a rust inhibitor, a metal deactivator, an additional anti-wear agent, an extreme pressure additive, an anti-seizure agent, a wax modifier, a viscosity index improver, a viscosity improver/modifier, a fluid-loss additive, a seal compatibility agent, an additional friction modifier, a lubricity agent, an anti-staining agent, a chromophoric agent, a demulsifier, an emulsifier, a pour point depressant, a densifier, a wetting agent, a gelling agent, a tackiness agent, a colorant, an antioxidants, an oxidation inhibitor, or a combination thereof. 
     
     
         13 . The method of  claim 11 , wherein a total amount of performance additives is present in an amount equal to or less than 10 wt % of the lubricating composition. 
     
     
         14 . A lubricating composition produced according to the method of  claim 8 . 
     
     
         15 . A method of lubricating a compressor, the method comprising applying the lubricating composition of  claim 1  to the compressor. 
     
     
         16 . The method of  claim 15 , wherein the compressor is a high-pressure compressor or a hyper compressor. 
     
     
         17 . A method of pressurizing an olefin, the method comprising: introducing the olefin into a compressor that is lubricated by the lubricating composition of  claim 1 ; and pressurizing the olefin with the compressor, wherein the compressor is at least one of a high pressure compressor, a hyper compressor, or both. 
     
     
         18 . The method of  claim 17 , wherein the olefin is ethylene. 
     
     
         19 . A method of making a high pressure olefin, the method comprising: pressurizing an olefin with a high pressure compressor that is lubricated with the lubricating composition of  claim 1 ; and reacting the pressurized olefin to form the high pressure olefin. 
     
     
         20 . The method of  claim 19 , wherein at least one of the olefin is ethylene, the high pressure olefin is high pressure low density polyethylene, or a combination thereof.